阅读说明：本技术 具有气味控制组分的纤维 (Fibers with odor control component ) 是由 S·T·马泰乌奇 J·E·博恩坎普 A·L·克拉索夫斯基 孙科夫 K·卢 R·维沃斯 于 2019-08-26 设计创作，主要内容包括：本发明提供一种纤维和由其制成的织物。在一实施例中,提供一种纤维并且所述纤维包含气味控制组合物。所述气味控制组合物包含(A)85wt％至99.5wt％的基于烯烃的聚合物和(B)15wt％至0.5wt％的气味抑制剂。所述气味抑制剂包含：(i)离子聚合物,(ii)氧化锌粒子,和(iii)氧化铜粒子。(The invention provides a fiber and a fabric made therefrom. In one embodiment, a fiber is provided and comprises an odor control composition. The odor control composition comprises (a)85 to 99.5 wt% of an olefin-based polymer and (B)15 to 0.5 wt% of an odor inhibitor. The odor inhibitor comprises: (i) an ionic polymer, (ii) zinc oxide particles, and (iii) copper oxide particles.)

1. A fiber, comprising:

an odor control composition, said composition comprising:

(A)85 to 99.5 wt% of an olefin-based polymer

(B)15 to 0.5 wt% of an odor inhibitor comprising a blend of:

(i) an ionic polymer;

(ii) zinc oxide particles; and

(iii) copper oxide particles.

2. The fiber of claim 1 wherein the odor control composition has a methyl mercaptan odor inhibition value of greater than 45% as measured according to ASTM D5504-12.

3. The fiber of claim 1 wherein the olefin-based polymer is an ethylene/α -olefin copolymer.

4. The fiber of claim 1, wherein the ionic polymer is a zinc salt of a polymer selected from the group of: ethylene/methyl-methacrylic acid, ethylene/vinyl acrylic acid, ethylene/methacrylic acid ester, ethylene/n-butyl acrylic acid and ethylene acrylic acid.

5. The fiber of claim 1, wherein the ionomer is a zinc ionomer.

6. The fiber of claim 1, wherein the zinc oxide particles have a D50 particle size of 100nm to 3000 nm.

7. The fiber of claim 1, wherein the zinc oxide particles have

1m²G to 9m²Surface area per gram; and

less than 0.020m³Porosity in g.

8. The fiber of claim 1, wherein the copper oxide particles are selected from the group of: copper (I) oxide and copper (II) oxide.

9. The composition of claim 1, wherein the ionic polymer (Bi) has a weight percentage between the zinc oxide (Bii) and the copper oxide (Biii) of 150:100:1 to 2.9:2.5: 1.

10. The fiber of claim 1, wherein the fiber is a monocomponent fiber.

11. The fiber of claim 1, wherein the fiber is a bicomponent fiber comprising:

a first component which is the odor control composition;

a second component which is a polymeric material different from the odour control component.

12. The fiber of claim 11, wherein the bicomponent fiber has a sheath-core structure.

13. The fiber of claim 11, wherein the first component is present in the sheath.

14. A fabric, comprising:

a plurality of fibers, said fibers comprising

(A)85 to 99.5 wt% of an olefin-based polymer

(B)15 to 0.5 wt% of an odor inhibitor comprising a blend of:

(i) an ionic polymer;

(ii) zinc oxide particles; and

(iii) copper oxide particles.

15. A fabric according to claim 14, wherein the odor control composition has a methyl mercaptan odor inhibition value of greater than 45% as measured according to ASTM D5504-12.

Background

Hygiene articles, such as incontinence garments, feminine care products and diapers, require a high degree of odor control. Many such hygiene articles comprise fibrous and/or textile components for moisture absorption and/or odour control.

Odor control particles (such as zeolites, sodium bicarbonate, activated silica, activated carbon, and metal oxides (such as zinc oxide (ZnO)), and especially zinc salts) are known to consume many odor-generating molecules, such as urea (and other amino-based odorants), H, that are typically generated during use of hygiene articles₂S and a thiol. All other factors being equal, it is well known that, for example, ZnO concentration is directly related to odor suppression-i.e., as ZnO concentration increases in a given olefin-based polymer article, the effectiveness of odor suppression also increases.

Although odor suppression increases with increasing metal oxides (especially ZnO), there is still a limit to the amount of ZnO that can be effectively incorporated into olefin-based polymer structures, such as films and fibers. High loading of ZnO particles in polymeric films increases extrusion die lip build-up (extrusion die lip build), leading to film defects. The high loading of ZnO particles also increases haze, resulting in a decrease in the transparency of the olefin-based polymer film and/or a deterioration in the color of the film. The highly loaded ZnO particles also adversely affect mechanical properties such as impact strength and film tear strength. Thus, processing parameters and end-use mechanical requirements impose practical limitations on the loading of odor absorbers (e.g., ZnO particles) into olefin-based polymer compositions.

The art recognizes a continuing need for new odor control formulations for fiber and fabric structures. The art further recognizes the need for new odor control compositions for fibers and fabrics that have processing and mechanical properties suitable for use in hygiene articles.

Disclosure of Invention

The invention provides a fiber. In one embodiment, a fiber is provided and comprises an odor control composition. The odor control composition comprises (a)85 to 99.5 wt% of an olefin-based polymer and (B)15 to 0.5 wt% of an odor inhibitor. The odor inhibitor comprises: (i) an ionic polymer, (ii) zinc oxide particles, and (iii) copper oxide particles.

The invention provides a fabric. In one embodiment, a fabric is provided and comprises a plurality of fibers. The fiber comprises (a)85 to 99.5 wt% of an olefin-based polymer and (B)15 to 0.5 wt% of an odor inhibitor. The odor inhibitor comprises a blend of: (i) an ionic polymer, (ii) zinc oxide particles, and (iii) copper oxide particles.

Definition of

Any reference to the periodic Table of elements is the periodic Table of elements published by CRC Press, Inc., 1990-1991. Reference to the element groups in this table is made by numbering the new symbols of the groups.

For purposes of united states patent practice, the contents of any referenced patent, patent application, or publication are incorporated by reference in their entirety (or the equivalent US version thereof is so incorporated by reference), especially with respect to the disclosure of definitions in the art (to the extent not inconsistent with any definitions specifically provided in this disclosure) and general knowledge.

The numerical ranges disclosed herein include all values from the lower and upper limit values, and include both the lower and upper limit values. For ranges containing an exact value (e.g., 1 or 2, or 3 to 5, or 6, or 7), any subrange between any two exact values is included (e.g., the above range 1 to 7 includes the subranges 1 to 2,2 to 6, 5 to 7,3 to 7, 5 to 6; etc.).

Unless stated to the contrary, implied from the context, or customary in the art, all parts and percentages are by weight and all test methods are current as of the filing date of this disclosure.

An "agglomerate" is a plurality of individual fine solid particles that agglomerate or otherwise collectively form a single mass.

As used herein, the term "blend" or "polymer blend" is a blend of two or more polymers. Such blends may or may not be miscible (not phase separated at the molecular level). Such blends may or may not be phase separated. Such blends may or may not contain one or more region configurations, as determined by transmission electron spectroscopy, light scattering, x-ray scattering, and other methods known in the art.

The term "composition" refers to a mixture of materials comprising the composition as well as reaction products and decomposition products formed from the materials of the composition.

The terms "comprising," "including," "having," and derivatives thereof, are not intended to exclude the presence of any additional component, step or procedure, whether or not the same is specifically disclosed. For the avoidance of any doubt, unless stated to the contrary, all compositions claimed through use of the term "comprising" may include any additional additive, adjuvant, or compound, whether polymeric or otherwise. In contrast, the term "consisting essentially of … …" excludes any other components, steps, or procedures from any subsequently enumerated range, except for those that are not essential to operability. The term "consisting of … …" excludes any component, step, or procedure not specifically recited or listed. Unless otherwise specified, the term "or" means the members listed individually as well as in any combination. The use of the singular encompasses the use of the plural and vice versa.

Ethylene-based polymers include ethylene homopolymers and ethylene copolymers (meaning units derived from ethylene and one or more comonomers) the term "ethylene-based polymer" is used interchangeably with "polyethylene" non-limiting examples of ethylene-based polymers (polyethylene) include low density polyethylene (L DPE) and linear polyethylene non-limiting examples of linear polyethylene include linear low density polyethylene (LL DPE), ultra low density polyethylene (U L DPE), very low density polyethylene (V L DPE), multicomponent vinyl copolymers (EPE), ethylene/α -olefin multi-block copolymers (also known as Olefin Block Copolymers (OBC)), substantially linear or linear plastomers/elastomers and high density polyethylene (high density polyethylene) (generally, may be produced in gas phase fluidized bed reactors, liquid phase slurry process reactors or liquid phase solution reactors using homogeneous catalysts such as heterogeneous metal-based systems (Ziegler-Natta), heterogeneous metal systems such as heterogeneous metal systems, such as Ziegler-metallocene-based systems, Ziegler systems, and heterogeneous metal systems, including heterogeneous metal-metallocene catalysts, Ziegler systems, and other homogeneous metal-based catalysts in combination reactors.

An "ethylene plastomer/elastomer" is a substantially linear or linear ethylene/α -olefin copolymer containing a homogeneous short chain branching distribution comprising units derived from ethylene and units derived from at least one C₃-C₁₀α -units of an olefinic comonomer the ethylene plastomer/elastomer has a density of from 0.870g/cc to 0.917g/cc non-limiting examples of ethylene plastomer/elastomer include AFFINITY^TMPlastomers and elastomers (available from The Dow Chemical Company), EXACT^TMPlastomers (available from ExxonMobil Chemical), Tafmer^TM(commercially available from Mitsui), Nexlene^TM(available from SK Chemicals Co.) and L ucene^TM(available from L G chemical Co., Ltd. (L G Chem L td.)).

"high density polyethylene" (or "HDPE") is an ethylene homopolymer or has at least one C₄-C₁₀α -olefin comonomer or C₄-C₈α -olefin comonomer ethylene/α -olefin copolymer having a density of 0.940g/cc, or 0.945g/cc, or 0.950g/cc, 0.953g/cc to 0.955g/cc, or 0.960g/cc, or 0.965g/cc, or 0.970g/cc, or 0.975g/cc or 0.980 g/cc.HDPE can be a unimodal copolymer or a multimodal copolymer₄-C₁₀α -olefin copolymerPeak ethylene copolymer "is an ethylene/C copolymer having at least two distinct peaks in GPC exhibiting molecular weight distribution₄-C₁₀α -olefin copolymer, multimodal includes copolymers having two peaks (bimodal) as well as copolymers having more than two peaks^TMHigh Density Polyethylene (HDPE) resin (available from Dow chemical Co., Ltd.), E L ITE^TMReinforced polyethylene resin (available from Dow chemical Co., Ltd.), CONTINUUM^TMBimodal polyethylene resin (available from Dow chemical Co., Ltd.), L UPO L EN^TM(available from lyon bessel (L yondelbasell)) and HDPE products from Borealis, Ineos and ExxonMobil.

An "interpolymer" is a polymer prepared by polymerizing at least two different monomers. This generic term encompasses copolymers, which are commonly used to refer to polymers prepared from two different monomers, and polymers prepared from more than two different monomers, such as terpolymers, tetrapolymers, and the like.

"Linear Low Density polyethylene" (or "LL DPE") is a linear ethylene/α -olefin copolymer containing a heterogeneous short chain branching distribution comprising units derived from ethylene and units derived from at least one C₃-C₁₀α -olefins or C₄-C₈α -units of an olefin comonomer compared to a conventional L DPE, & ' lTtT translation = LL ' & ' gTt LL & ' lTt/T & ' gTt DPE is characterized by very few, if any, long chain branches LL DPE has a density of 0.910g/cc to less than 0.940g/cc non-limiting examples of LL DPE include TUF L IN^TMLinear Low Density polyethylene resin (available from Dow chemical Co.), DOW L EX^TMPolyethylene resin (available from Dow chemical Co.) and MAR L EX^TMPolyethylene (available from Chevron Phillips).

"Low-density polyethylene" (or "L DPE") consisting of an ethylene homopolymer or comprising at least one C₃-C₁₀α -olefins or C₄-C₈α -olefin ethylene/α -olefin copolymer composition having a density of 0.915g/cc to less than 0.940g/cc and containing long chain branches with broad MWD L DPE is typically prepared by high pressure free radical polymerization (tubular reactor or autoclave with free radical initiator). L DPE is a non-limiting list ofExemplary examples include MarFlex^TM(Chevron Phillips)、LUPOLEN^TM(lyon debasel), and L DPE products from Borealis, Ineos, exxon mobil, and others.

"multicomponent ethylene-based copolymer" (or "EPE") comprising units derived from ethylene and units derived from at least one C₃-C₁₀α -olefins or C₄-C₈α -units of an olefin comonomer, as described in U.S. Pat. No. 6,111,023, U.S. Pat. No. 5,677,383, and U.S. Pat. No. 6,984,695 EPE resins having a density of from 0.905g/cc to 0.962g/cc non-limiting examples of EPE resins include E L ITE^TMReinforced polyethylene (available from Dow chemical Co., Ltd.), E L ITE AT^TMAdvanced technology resins (available from the Dow chemical company), SURPASS^TMPolyethylene (PE) resins (available from Nova Chemicals), and SMART^TM(available from SK chemical Co.).

An "olefin-based polymer" or "polyolefin" is a polymer containing more than 50 weight percent polymerized olefin monomer (based on the total amount of polymerizable monomers) and, optionally, may contain at least one comonomer. Non-limiting examples of olefin-based polymers include ethylene-based polymers or propylene-based polymers.

The general term polymer thus embraces the term homopolymer, which is generally used to refer to polymers prepared from only one type of monomer, and the term copolymer, which is generally used to refer to polymers prepared from at least two types of monomers.

The term "propylene-based polymer" is a polymer that contains more than 50 weight percent polymerized propylene monomer (based on the total amount of polymerizable monomers) and, optionally, may contain at least one comonomer. Propylene-based polymers include propylene homopolymers and propylene copolymers (meaning units derived from propylene and one or more comonomers). The terms "propylene-based polymer" and "polypropylene" are used interchangeably. Non-limiting examples of suitable propylene copolymers include propylene impact copolymers and propylene random copolymers.

"ultra-low density polyethylene" (or "U L DPE") and "very low density polyethylene" (or "V L DPE") are each linear ethylene/α -olefin copolymers containing a heterogeneous short chain branch distribution comprising units derived from ethylene and units derived from at least one C₃-C₁₀α -units of an olefinic comonomer U L DPE and V L DPE each have a density of from 0.885g/cc to 0.915g/cc non-limiting examples of U L DPE and V L DPE include ATTANE^TMUltra low density polyethylene resin (available from Dow chemical) and F L EXOMER^TMVery low density polyethylene resins (available from the dow chemical company).

Test method

D10, D50 and D90 particle diameters were measured using a Coulter L S230 laser light scattering particle size analyzer available from Coulter corporation.D 10 particle diameter at 10% of the powder mass is the particle diameter consisting of particles having a diameter less than this value.D 50 particle diameter at 50% of the powder mass is the particle diameter consisting of particles having a diameter less than this value and 50% of the mass is the particle diameter consisting of particles having a diameter greater than this value.D 90 particle diameter at 90% of the powder mass is the particle diameter consisting of particles having a diameter less than this value.A Coulter L S230 laser light scattering particle size analyzer available from Coulter Corporation was used to measure the average volume average particle diameter.

Dart impact strength was measured according to ASTM D1709, with results reported in grams (g).

Denier is a measure of the linear mass density of a fiber in g/9000m of fiber.

Density is measured according to ASTM D792, method B. The results are reported in grams per cubic centimeter (g/cc).

Differential Scanning Calorimetry (DSC)Differential Scanning Calorimetry (DSC) can be used to measure the melting, crystallization and glass transition behavior of polymers over a wide range of temperatures. This analysis is performed, for example, using a TA Instruments Q1000DSC equipped with RCS (cryogenic cooling system) and an autosampler. During the test, a nitrogen purge gas flow of 50ml/min was used. Melt extrusion of each sample into a film at about 175 ℃; the molten sample was then allowed to air cool to room temperature (about 25 ℃). A 3-10mg6mm diameter sample was extracted from the cooled polymer, weighed, placed in a lightweight aluminum pan (approximately 50mg), and sealed (crimephedst). Analysis is then performed to determine the thermal properties of the sample.

The thermal behavior of the sample was determined by slowly raising and lowering the sample temperature to establish a heat flow versus temperature profile. First, the sample was rapidly heated to 180 ℃ and held isothermal for 3 minutes in order to remove its thermal history. Subsequently, the sample was cooled to-40 ℃ at a cooling rate of 10 ℃/min and kept isothermal for 3 minutes at-40 ℃. The sample was then heated to 180 ℃ at a 10 ℃/minute heating rate (this is a "second heating" ramp). The cooling and second heating profiles were recorded. The cooling curve was analyzed by setting the baseline endpoint from the start of crystallization to-20 ℃. The heating curve was analyzed by setting the baseline end point from-20 ℃ to the end of melting. The values determined are the extrapolated melting onset point Tm and the extrapolated crystallization onset point Tc. Heat of fusion (H)_f) (in joules/gram) and the calculated% crystallinity of the polyethylene sample using the following equation: % crystallinity ═ H_f) /292J/g) × 100 determination of the glass transition temperature T from the DSC heating curve in which half of the sample has acquired the heat capacity of the liquid_gSuch as described in BernhardWundrilich, Basis of Thermal Analysis (The Basis of Thermal Analysis), Thermal characterization of Polymeric Materials (Thermal characterization of Polymeric Materials) 92,278-279(Edith A. Turi eds., 2 nd edition 1997). Baselines were plotted from below and above the glass transition region and extrapolated through the Tg region. The temperature at which the heat capacity of the sample is half way between these base lines is Tg.

The Elmendorf tear (or tear) was measured according to ASTM D1922-15, Machine Direction (MD) and reported in grams force (gf).

Melt flow rate in g/10min was measured according to ASTM D1238(230 ℃/2.16 kg).

Melt Index (MI) in g/10min was measured according to ASTM D1238(190 ℃/2.16kg) (I2).

Odor inhibition/odor inhibition value.

In the present invention, odor inhibition of methyl mercaptan is measured according to ASTM D5504-12 using gas chromatography equipped with Agilent sulfur chemiluminescence detector (GC-SCD). The odor inhibition is measured by DOW L EX^TM2085G, ethylene/octene LL DPE film was placed onControl samples were prepared in bags (polyvinyl fluoride) the control was then filled with 900m L helium and a known amount of methyl mercaptanBag and sealingAnd (4) a bag. Test samples were prepared by placing films formed from the respective test compositions, each test film being placed in a respectiveEach bag was then filled with 900m L helium and a known amount of methyl mercaptanBag and sealingAnd (4) a bag. Samples were injected from each bag onto the GC-SCD at predetermined time intervals in order to assess odor inhibition ability.

The reference and test samples were analyzed two days later. The reference sample was used as a calibration standard to calculate the methyl mercaptan concentration of each test sample.

A. Sample preparation

Sample bags on SKC 1L (SKC)Sample bags, 1 liter, catalog No. 232-01) a control sample containing 5ppmv methyl mercaptan and each test sample were prepared. As a calibration standardA reference sample without film was prepared in the bag.

1. 1.0g of the film was cut into strips (about 1cm × 30 cm).

2. The valve was unscrewed from the sample bag, the film strip was inserted into the bag through the valve hole using the handle of a cotton tipped applicator (cotton applicator), and the valve was mounted back into the sample bag, air was squeezed from the bag, and then the valve was tightened to seal the bag.

3. The bag was filled with 0.90L helium (AirGas, super helium).

4. 50m L of 100ppmv methanethiol were injected into the bag using a gas tight glass syringe.

Odor inhibition value tests were also performed on other odorants, including ethanethiol, propanethiol, and butanethiol.

GC-SCD conditions

1, gas chromatograph: model 7890 Agilent with split/no split injection ports available from Agilent Technologies,2850Centerville Road, Wilmington, DE 19808, Agilent Technologies, Inc. of Wilmington, Town.2850.

2. A detector: agilent Sulfide Chemiluminescence (SCD), model G6644A.

3. Chromatographic data system, Agilent Open L AB software.

4. Column Agilent J & W DB-130 m × 0.32mm ID, 5 μm film thickness.

5. The carrier gas is hydrogen, and the constant flow rate is 2.0m L/min.

6. An inlet: split flow, temperature: at 250 ℃, the split ratio: 100:1.

7. Injection volume Valco six-way valve 500 μ L, ring size 500 μ L.

8. Oven temperature: at 30 ℃ for 1 minute, at 15 ℃/min to 140 ℃ for 1 minute.

SCD detector conditions:

temperature: at 250 ℃ to obtain a mixture.

The hydrogen flow rate was 38.3m L/min.

Flow rate of the oxidizing agent: 59.9 sccm.

Pressure: 400 torr.

The odor inhibition value (OSV) is the% removal of methyl mercaptan calculated from the following equation:

the peak area is the response of GC-SCD.

At two days, the GC-SCD peak area for methyl mercaptan in the reference sample was 28240298, while the GC-SCD peak area for methyl mercaptan in the test sample IE1 was 5667327 (in Agilent Open L AB software, units pA × s.) the odor inhibition value for the test sample IE1 was (((28240298-.

Porosity and surface area.The analysis of the porosity and surface area by Brunauer-Emmett-Teller (BET) was performed using a Micromeritics accelerated surface area and porosimeter (ASAP 2420). Prior to analysis, the samples were outgassed at 105 ℃ and under vacuum.

ASAP2420 instrument using quantitative dosingStatic (volumetric) method of sample feed and measures the amount of gas that can be physically adsorbed (physisorbed) on a solid at the temperature of liquid nitrogen. For multi-point BET measurements, the nitrogen uptake is measured at a preselected relative pressure point at a constant temperature. The relative pressure is the ratio of the applied nitrogen pressure to the nitrogen vapor pressure at the analytical temperature of 77 kelvin (K). The result of the porosity is in cubic meters per gram or m³The/g is reported in units. Surface area results in square meters per gram or m²The/g is reported in units.

The term "ramp-to-break" refers to the pulling speed in meters per minute (or mpm) at which the fiber breaks completely and is discontinuous. Ramp-up to break is a method of determining the maximum line speed at which a fiber is drawn on a hill line by gradually increasing the take-up speed of a bundle of filaments. This is achieved by ramping the process to a point where at least one fiber break occurs. The maximum speed at which the material runs without individual fiber breaks for a minimum of 30 seconds is the maximum draw speed or the break ramp speed. The ramp-up procedure begins at a winding speed of 1500mpm (or less if desired). The material was run at this linear speed for 30 seconds and if no fiber break was observed, the godet speed was increased by 250mpm in 30 seconds. The material was run at each intermediate point for 30 seconds while checking for a break at rest. This procedure was carried out until fracture was achieved. The speed at which the fracture occurred was recorded. The process was repeated a minimum of three times and the average was recorded as the maximum draw speed obtained via the break ramp up method. The standard deviation of repeated measurements on the same polymer was about 100 mpm.

The term "tenacity" refers to the ratio of load required to break a fiber to fiber denier as measured according to ASTM D3217-07.

The term "tensile strength" refers to the maximum amount of tensile stress that a fiber can withstand before breaking as measured according to ASTM D76M-11 (2016).

Zinc/copper-total.The total amount of zinc and/or copper present in the composition is determined by x-ray fluorescence spectrometry (XRS) according to ASTM D6247. Results are reported in parts per million or ppm.

Detailed Description

The invention provides a fiber. In one embodiment, a fiber is provided and comprises an odor control composition. An odor control composition comprising: (A)85 to 99.5 wt% of an olefin-based polymer, and (B)15 to 0.5 wt% of an odor inhibitor comprising a blend of: (i) an ionic polymer; (ii) zinc oxide particles; and (iii) copper oxide particles.

Fiber

A "fiber" is a single continuous strand of elongated material having a generally circular cross-section and a length to diameter ratio of greater than 10.

Odor control compositions

The fibers of the present invention comprise an odor control composition. In one embodiment, the inventive composition comprises 85 wt%, or 90 wt% to 95 wt%, or 97 wt%, 99 wt%, or 99.5 wt% of component (a), which is an olefin-based polymer. The odour control composition comprises a complementary amount (complementary amount) of component (B), or 15 wt%, or 10 wt% to 5 wt%, or 3 wt%, 1 wt% or 0.5 wt% of odour inhibitors.

The odor control composition has an odor inhibition value of 45%, or 46%, or 50%, or 60%, or 70% to 75%, or 80%, or 85%, or 90%, as measured according to ASTM D5504-12.

A. Olefin-based polymers

Non-limiting examples of propylene-based polymers include propylene copolymers, propylene homopolymers, and combinations thereof in one embodiment, the propylene-based polymer is a propylene/α -olefin copolymer, a non-limiting example of a suitable α -olefin includes C₂And C₄-C₂₀α -olefin, or C₄-C₁₀α -olefin, or C₄-C₈α -olefin representative α -olefins include ethylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, and 1-octene.

In one embodiment, the propylene/α -olefin copolymer is a propylene/ethylene copolymer containing greater than 50 wt% units derived from propylene, or 51 wt%, or 55 wt%, or 60 wt% to 70 wt%, or 80 wt%, or 90 wt%, or 95 wt%, or 99 wt% units derived from propylene, based on the weight of the propylene/ethylene copolymer contains a complementary amount of units derived from ethylene, or less than 50 wt%, or 49 wt%, or 45 wt%, or 40 wt% to 30 wt%, or 20 wt%, or 10 wt%, or 5 wt%, or 1 wt% units derived from ethylene, based on the weight of the propylene/ethylene copolymer.

The ethylene-based polymer may be an ethylene homopolymer or an ethylene/α -olefin copolymer.

In one embodiment, the ethylene-based polymer is an ethylene/α -olefin copolymer non-limiting examples of suitable α -olefins include C₃-C₂₀α -olefin, or C₄-C₁₀α -olefin, or C₄-C₈α -olefin representative α -olefins include propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, and 1-octene.

In one embodiment, the ethylene/α -olefin copolymer is LL DPE, which is ethylene/C₄-C₈α -olefin copolymer LL DPE has one, some or all of the following properties:

(i) a density of 0.910 to 0.930g/cc, or 0.915 to 0.926 g/cc; and/or

(ii) A melt index of 0.5g/10min, or 1.0g/10min, or 2.0g/10min to 3.0g/10min, or 4.0g/10min, or 5.0g/10 min.

B. Odour inhibitors

The composition of the present invention comprises an odor inhibitor. The odor inhibitor is composed of (Bi) ionic polymer, (Bii) zinc oxide particles, and (Biii) copper oxide particles.

(Bi) Ionic Polymer

The composition of the present invention comprises an ionic polymer. As used herein, an "ionic polymer" is an ion-containing polymer. An "ion" is an atom having a positive or negative charge. Ionic polymers have a majority weight percent (typically 85% to 90%) of nonionic (non-polar) repeating monomer units and a minority weight percent (typically 10% to 15%) of ionic or polar (i.e., positively or negatively charged) repeating comonomer units. The positive charge of the ionic group attracts the negative charge of the ionic group, creating an ionic bond. Ionomer resins exhibit what is known as "reversible crosslinking," i.e., when the ionomer is heated, the polymer chains have increased mobility and the ionic bonds cannot remain intact because the positive and negative charges pull apart from each other.

Non-limiting examples of suitable α -olefins include ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, and 3-methylbutene.

In one embodiment, the ionomer is a copolymer of ethylene and methacrylic acid.

In one embodiment, the ionomer is a copolymer of ethylene and acrylic acid.

As used herein, the term "metal ionomer" refers to a copolymer based on α -metal salts of copolymers of olefins with ethylenically unsaturated carboxylic acids and/or anhydrides8660, which is the sodium salt of a copolymer of ethylene and methacrylic acid, commercially available from Dow-DuPont.

In one embodiment, the metal ionomer is a zinc ionomer. As used herein, the term "zinc ionomer" (or "ZnI/O") refers to a copolymer based on a zinc salt of a copolymer of ethylene and a vinyl comonomer having a carboxylic acid and/or anhydride. Non-limiting examples of suitable comonomers having vinyl comonomers with acid groups include methyl/methacrylic acid, vinyl acrylic acid, methacrylate esters, n-butylacrylic acid, and acrylic acid.

Non-limiting examples of suitable zinc ionomers include zinc salts of ethylene/acrylic acid comonomers, zinc salts of ethylene/methyl-methacrylic acid copolymers, zinc salts of ethylene/vinyl acrylic acid copolymers, zinc salts of ethylene/methacrylate copolymers, zinc salts of ethylene/n-butyl acrylic acid copolymers, and any combination thereof.

In one embodiment, the zinc ionomer is a zinc salt of an ethylene/acrylic acid copolymer. Non-limiting examples of suitable zinc ion polymers include9150, which is a zinc salt of a copolymer of ethylene and methacrylic acid, is available from dow-dupont.

B (ii) zinc oxide particles

The odor inhibitor comprises particles of zinc oxide (or "ZnO"). The ZnO particles have a D50 particle diameter of 100-3000 nm and a particle diameter of 1m²A/g to less than 10m²Surface area of less than 0.020 m/g³Porosity in g.

In one embodiment, the ZnO particles have one, some or all of the following properties (i) - (iii):

(i) particle size D50 at 100nm, or 200nm, or 300nm, or 400nm to 500nm, or 600nm, or 700nm, or 800nm, or 900nm, or 1000nm, or 2000nm, or 3000 nm; and/or

(ii)1m²Per g, or 2m²Per g, or 3m²Per g, or 4m²G to 5m²Per g, or 6m²Per g, or 7m²Per g, or 8m²Per g, or 9m²Surface area per gram; and/or

(iii)0.005m³Per g, or 0.006m³In terms of/g, or 0.008m³Per g, or 0.010m³G to 0.012m³Per g, or 0.013m³In terms of/g, or 0.015m³A/g, or less than 0.020m³Porosity in g.

Non-limiting examples of suitable ZnO particles include 800HSA (zinc oxide, LL C), ZnO micropowder (US Research Nanomaterials), and Zoco102(Zochem corporation).

(Biii) copper oxide particles

The odor inhibitor further comprises copper oxide particles. The copper oxide may be "Cu₂O "(copper oxide I) or" CuO "(copper oxide II) or a mixture of both. In one embodiment, the copper oxide particles have a D50 particle size of 100nm to 3000nm and a particle size of 1m²A/g to less than 10m²Surface area in g. Without being bound by a particular theory, it is believed that the copper oxide particles function as sulfur scavengers for, inter alia, hydrogen sulfide and mercaptans.

In one embodiment, the particle size D50 of the copper oxide particles is 100nm, or 200nm, or 300nm, or 400nm to 500nm, or 600nm, or 700nm, or 800nm, or 900nm, or 1000nm, or 2000nm, or 3000 nm. Non-limiting examples of suitable copper oxide particles include Cu, available from Reade Advanced Materials₂O325 mesh powder and CuO 325 mesh powder.

C. Composition comprising a metal oxide and a metal oxide

The composition of the present invention comprises (a)85 to 99.5 wt% of an olefin-based polymer and (B)15 to 0.5 wt% of an odor inhibitor, based on the total weight of the composition (hereinafter composition 1). The odor inhibitor is mixed or otherwise blended into the olefin-based polymer matrix and is a blend of (Bi) ionic polymer, (Bii) zinc oxide particles, and (Biii) copper oxide particles. The composition has an odor inhibition value of greater than 45%. In one embodiment, the composition has an odor inhibition value of 46%, or 49%, or 50%, or 60%, or 70% to 75%, or 80%, or 85%, or 90%.

ZnI/O (Bi) is present in component (B) in an amount of 1 to 90 wt%, based on the total weight of component (B). The ratio of ZnO to ZnI/O (hereinafter "ZnO to ZnI/O ratio") is from 3:1 to 1:7 based on the total weight of the odor inhibitor (B). The ratio of ZnO to ZnI/O can be 3:1, or2:1, or 1:1 to 1:2, or 1:3, or 1:4 or 1:5, or 1:6, or 1: 7. The copper oxide particles (Biii) are present in component (B) in an amount of 0.01 to 30 wt%, based on the total weight of component (B). The copper oxide particles may be copper (I) oxide (Cu)₂O), copper (II) oxide (CuO), or a mixture of both. In one embodiment, the weight percentage of the ionic polymer (Bi), the zinc oxide (Bii) and the copper oxide (Biii) is 150:100:1 to 2.9:2.5:1 (composition 1 below), based on the total weight of the odor inhibitor (B).

In an embodiment, the weight percentage of the ionic polymer (Bi), the zinc oxide (Bii) and the copper oxide (Biii) is between 100:75:1 and 3:2.5:1, based on the total weight of the odour inhibitor (B).

In one embodiment, the inventive composition comprises 85 wt%, or 90 wt% to 95 wt%, or 97 wt%, 99 wt%, or 99.4 wt%, or 99.5 wt% of component (a), which is an ethylene-based polymer. The compositions of the present invention comprise a complementary amount of odor inhibitor component (B), or 15 wt%, or 10 wt% to 5 wt%, or 3 wt%, 1 wt%, or 0.6 wt%, or 0.5 wt% of an odor inhibitor, wherein Zn I/O and ZnO and Cu are present in the composition₂The ratio of O is 12.5:12.5:1 to 2.5:2.5: 1. The odor inhibitor (B) can be any odor inhibitor as previously disclosed herein (composition 2 below).

The compositions (i.e., composition 1 and/or composition 2) had an odor inhibition value of 46%, or 50%, or 60%, or 70% to 75%, or 80%, or 85%, or 90%.

Although the combination of ZnO with ionic polymers increases the OSV of methyl mercaptan, the addition of copper oxide, especially Cu, has been observed₂O, further increasing the total OSV. In fact, applicants have surprisingly found that the addition of 0.01 to 0.1 wt% Cu to a ZnO/ionomer odor-inhibiting composition compared to a ZnO/ionomer odor-inhibiting composition that does not contain copper oxide particles₂O (e.g., based on the total weight of the odor inhibitor composition (B)) may increase OSV performance by more than a factor of two.

D. Blend composition

The components (a) and (B) are mixed or otherwise blended together to form the composition of the present invention such that the zinc oxide particles and copper oxide particles are (i) dispersed within the olefin-based polymer (a) and/or (i) dispersed within the ionomer (Bi).

In one embodiment, the composition of the present invention is produced in the form of an odor control masterbatch, wherein component (B) is formed by dispersing zinc oxide particles (Bii) and copper oxide particles (Biii) in an ionic polymer (Bi). Dispersion can be accomplished by physically mixing and/or melt blending the components (Bi), (Bii), and (Biii) so that the particles (zinc oxide and copper oxide) are uniformly dispersed throughout the ionomer. The resulting component (B) is then mixed or otherwise blended with the olefin-based polymer component (a). The mixing of component (B) with component (a) can be accomplished by physical mixing and/or melt blending (hereinafter odor control masterbatch 1).

In one embodiment, the composition of the invention is produced in the form of an odor control masterbatch by dispersing zinc oxide particles (Bii) in an ionomer (Bi). Dispersion can be accomplished by physically mixing and/or melt blending component (Bi) with (Bii) to uniformly disperse the zinc particles throughout the ionomer (Bi) ("Bi-Bii blend"). The Bi-Bii blend and the copper oxide particles are then added to the olefin-based polymer component (a) by physical mixing and/or melt blending to form the inventive composition of a homogeneous blend of olefin-based polymer (a), ionomer (Bi), zinc oxide particles (Bii), and copper oxide particles (Biii). (odor control masterbatch 2, below)

In one embodiment, the composition of the present invention is produced in the form of an odor control masterbatch by mixing the ionic polymer (Bi), the zinc oxide particles (Bii), the copper oxide particles (Biii), and the olefin-based polymer (a). The mixing can be accomplished by physically mixing and/or melt blending the components (a), (Bi), (Bii) and (Biii) so as to uniformly disperse the ionic polymer (Bi), the zinc oxide particles (Bii) and the copper oxide particles (Biii) throughout the olefin-based polymer (a) (hereinafter odor control masterbatch 3).

In one embodiment, the composition of the invention is produced in the form of an odor control masterbatch by mixing the ionic polymer (Bi), the zinc oxide particles (Bii) and the olefin-based polymer (a). Mixing can be accomplished by physically mixing and/or melt blending the components (Bi), (Bii) and (A) so as to uniformly disperse (Bi) and (Bii) throughout (A) (hereinafter A-Bi-Bii blend). The copper oxide particles (Biii) are mixed with the component (a). Mixing may be accomplished by physical mixing and/or melt blending to uniformly disperse the copper oxide particles (Biii) in (a) (hereinafter a-Biii blend). The A-Bi-Bii blend is then mixed with the A-Biii blend. The mixing may be accomplished by physical mixing and/or melt blending to form a homogeneous composition (hereinafter, odor control master batch 4) composed of the olefin-based polymer (a), the ionic polymer (Bi), the zinc oxide particles (Bii), and the copper oxide particles (Biii).

In an embodiment, the odor control masterbatch (i.e., any of odor control masterbatches 1, 2, 3, or 4) comprises 20 wt% to 30 wt% ionomer, 20 wt% to 30 wt% zinc oxide particles, 5 wt% to 15 wt% copper oxide particles, and 30 wt% to 60 wt% LL DPE, wherein the set of components total 100 wt% of the odor control composition.

The fibers of the present invention may be monocomponent fibers, monocomponent fibers (homofil) fibers or bicomponent fibers.

In one embodiment, the fibers are monocomponent fibers. A "monocomponent fiber" (also referred to as a "monofilament" or "monocomponent fiber") is a fiber that is a continuous strand of a single material. Monocomponent fibers can have an indefinite (i.e., non-predetermined) length, or a definite length (i.e., "staple fibers," which are discrete strands of material that have been cut or otherwise divided into segments of predetermined length). Monocomponent fibers are fibers having a single polymeric region or domain, and not having any other distinct polymeric regions (as are bicomponent fibers).

In one embodiment, the fibers are bicomponent fibers. "bicomponent fibers" are fibers having two or more distinct polymeric components. Bicomponent fibers are also known as conjugate or multicomponent fibers. Although two or more components may comprise the same polymer, the polymers are typically different from each other. The polymeric components are arranged in different zones across the cross-section of the bicomponent fiber. The different components of the bicomponent fibers typically extend continuously along the length of the bicomponent fibers. The configuration of the bicomponent fiber can be, for example, a sheath-core arrangement (in which one polymer is surrounded by another), a segmented pie arrangement, or an "island-in-the-sea" arrangement.

The bicomponent fibers comprise a first component and a second component, wherein the first component is an odor control composition.

Non-limiting examples of materials suitable for the second component include olefin-based polymers (i.e., propylene-based polymers and ethylene-based polymers), polyesters, such as polyethylene terephthalate, glycol-modified polyethylene terephthalate, polybutylene terephthalate, polylactic acid, polypropylene terephthalate (e.g., commercially available from dupont)) Polyethylene-2, 5-furandicarboxylate, polyhydroxybutyrate, polyamide, polylactic acid (e.g., NatureWorks available from Geigy-Dow and from Mistui Chemical)) Diacid/diol aliphatic polyesters (e.g., available from Showa High Polymer Company, L td.)1000 and3000) and aliphatic/aromatic copolyesters (e.g., EASTAR from Eastman chemical)^TMBIO copolyester or ECOF L EX from BASF^TM) And combinations thereof.

The polyester can have a density of 1.2g/cc to 1.5g/cc, or 1.35g/cc to 1.45 g/cc.

The molecular weight of the polyester may be equivalent to an Intrinsic Viscosity (IV) of 0.5dl/g to 1.4dl/g as determined according to ASTM D4603 or ASTM D2857.

In one embodiment, the bicomponent fiber has a sheath-core configuration in which the core (comprised of the second component) is located in a central or non-central location within a sheath (comprised of the odor control composition) that completely surrounds the core.

In one embodiment, the bicomponent fibers have a segmented pie configuration. The fibers are comprised of a plurality of first cake segments. The first cake segment is comprised of a first component that is an odor control composition. The fiber further comprises a plurality of second cake segments. The second tortilla segment is composed of a second component. Each pie segment extends from a center point of the fiber and radially outward to an outer surface of the fiber. The volume of the fibers is filled by the alternating arrangement of the first and second cake sections. The alternating first and second cake sections extend along the length of the fiber or along the entire length of the fiber and are integral and inseparable.

In one embodiment, the bicomponent fiber has a "island in the sea configuration". The fiber is composed of a plurality of cores (formed from the second component). The multiple cores are separate from each other and disposed in a sheath comprised of a first component that is an odor control composition. The multiple cores form discrete "islands" within the "sea" (sheath). The material of the sheath (odor control composition, first component) separates the multiple cores (second components) from each other. The material of the sheath also surrounds or otherwise encases the plurality of cores. The plurality of cores ("islands") and sheaths ("seas") extend along the length of the fiber or along the entire length of the fiber, and are integral and inseparable.

The fibers (monocomponent or bicomponent) may be meltspun fibers or meltblown fibers.

In one embodiment, the fibers (monocomponent or bicomponent) are melt-spun fibers. As used herein, "meltspun fibers" are fibers made by a meltspinning process. Melt spinning is a process in which a polymer melt is extruded as molten filaments through a plurality of fine die capillaries (such as, for example, spinnerets) while an elongating force is applied, which reduces the density of the molten filaments. The molten filaments solidify upon cooling below their melting temperature, forming fibers. The term "melt spinning" encompasses staple spinning (including short and long spinning) and loose continuous filament fibers. The melt spun fibers may be cold drawn.

In one embodiment, the fibers are meltblown fibers. "meltblown fibers" are fibers formed by extruding a molten thermoplastic polymer composition through a plurality of fine, usually circular, die capillaries as molten threads or filaments into converging high velocity gas (e.g., air) streams which are used to attenuate the threads or filaments to reduce density. The filaments or filaments are carried by a high velocity gas stream and are deposited on a collecting surface to form a web of randomly dispersed fibers having an average thickness of typically less than 10 microns.

In one embodiment, the density of the fibers has a lower limit of 15 denier and an upper limit of 100 denier.

In one embodiment, the fiber has a ramp to break of 2600 meters per minute (mpm) to 3200 mpm.

In one embodiment, the fibers have a tensile strength of 30g/5cm, or 50g/5cm to 100g/5 cm.

In one embodiment, the fibers have a tenacity of at least 2 cN/Tex (cn/Tex).

The fibers may optionally include one or more other additives. Non-limiting examples of suitable additives include stabilizers, antioxidants, fillers, colorants (colorants), nucleating agents, mold release agents, dispersants, catalyst deactivators, UV light absorbers, flame retardants, colorants (coloring agents), mold release agents, lubricants, antistatic agents, pigments, and any combination of the foregoing.

The fibers may include two or more embodiments disclosed herein.

Fabric

The invention provides a fabric. In one embodiment, the fabric comprises a plurality of fibers. The fibers comprise an odor control component. The odor control component comprises: (A)85 to 99.5 wt% of an olefin-based polymer and (B)15 to 0.5 wt% of an odor inhibitor. The odour inhibitor consists of a blend of: (i) an ionic polymer, (ii) zinc oxide particles, and (iii) copper oxide particles.

In one embodiment, the odor control composition has a methyl mercaptan odor inhibition value of greater than 45% as measured according to ASTM D5504-12.

"Fabric" is a woven or non-woven structure formed from individual fibers or yarns.

"woven fabrics" are a combination of interwoven fibers (or yarns). Woven fabrics are made by weaving two distinct sets of fibers, warp fibers (or "warp") and weft fibers (or "weft"). A warp yarn is a group of fibers that is in place in a loom prior to the introduction of a weft yarn. The weft yarn is a group of fibers introduced during weaving. The lengthwise or longitudinal warp fibers remain stationary on the frame or loom, in tension, while the transverse weft fibers are pulled through the warp yarns and inserted above and below the warp yarns. The warp yarns interweave with the weft yarns at right angles to form the fabric. Non-limiting examples of interwoven knitted fabric structures include lock-stitch knitted fabrics (lock-stitch knitted fabrics).

As used herein, a "nonwoven" or "nonwoven material" is a combination of fibers (e.g., sheath-core, segmented pie, or "islands-in-the-sea") that are held together in a random web by mechanical interlocking or by fusing at least a portion of the fibers. The nonwoven fabric according to the invention can be manufactured via different techniques. Such methods include, but are not limited to, spunbond processes, meltblown processes, carded web processes, airlaid processes, thermal calendering processes, glue bonding processes, hot air bonding processes, needle punching processes, hydroentangling processes, electrospinning processes, and combinations thereof.

In one embodiment, the inventive fabric is produced by a spunbond process. In the spunbond process, the manufacture of the nonwoven fabric comprises the steps of: (a) extruding a strand of the odor control composition from a spinneret; (b) quenching the strand with a stream of substantially cooled air so as to accelerate solidification of the molten strand; (c) attenuating the filaments by advancing the filaments through a quench zone using a pulling tension that can be applied by pneumatically entraining the filaments in an air stream or by winding the filaments around a mechanical pulling roll of the type commonly used in the textile fiber industry; (d) collecting the drawn strands into a web on a foraminous surface (e.g., a moving screen or foraminous conveyor belt); and (e) bonding the web of loose strands in the nonwoven. Bonding may be accomplished by a variety of means including, but not limited to, a thermal calendaring process, a glue bonding process, a hot air bonding process, a needle punching process, a hydroentangling process, and combinations thereof.

The spunbond nonwoven can be formed as a multilayer or laminate structure. Such multilayer structures comprise at least two or more layers, wherein at least one or more layers is a spunbond nonwoven fabric according to the present invention and one or more other layers are selected from one or more meltblown nonwoven layers, one or more wet-laid nonwoven layers, one or more air-laid nonwoven layers, one or more webs produced by any nonwoven or melt spinning process, one or more film layers (e.g., cast films, blown films), one or more coating layers obtained from a coating composition via, for example, extrusion coating, spray coating, gravure coating, printing, dip coating, contact roll coating, or knife coating. The laminate structure may be joined via any number of bonding methods; thermal bonding, adhesive lamination, hydroentangling, needling. The structure may be in the range of S to SX, or SXX, or SXXX, or SXXXX, or SXXXXX, where X may be a film, coating, or other non-woven material in any combination. The additional spunbond layers can be made from the ethylene-based polymer composition as described herein, and optionally in combination with one or more polymers and/or additives.

Spunbond nonwovens can be used in a variety of end-use applications, including, but not limited to, hygiene absorbent products (e.g., diapers, feminine hygiene products, adult incontinence products), wipes, bandages, and wound dressings, as well as disposable slippers and footwear, medical applications (e.g., barrier gowns, surgical drapes and covers, surgical gowns, caps, masks, and medical packaging).

In the case of staple or binder fibers, the fibers of the present invention, which are comprised of the odor control composition, can be blended with a variety of other fibers including synthetic fibers such as Polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), or natural fibers such as cellulose, rayon, or cotton. Such fibers may be wet laid, air laid or carded into a nonwoven web. The nonwoven web may then be laminated to other materials.

In one embodiment, the plurality of fibers of the nonwoven fabric have a diameter of 0.2 to 10 microns.

In one embodiment, the fibers of the present invention can be used with carded yarns to create a fabric.

By way of example, and not limitation, some embodiments of the invention will now be described in detail in the following examples.

Examples of the invention

The materials used in the examples are provided in table 1 below.

TABLE 1

1. Film

Masterbatch processing two batches of masterbatch were prepared to ease feeding of the odor-inhibiting composition into subsequent film production lines. The master batch was prepared on a Coperion ZSK 26 twin screw extruder using a universal screw. The material residence time was controlled by the screw design, the feed rate was 20 pounds per hour, and the screw speed was 300 Revolutions Per Minute (RPM). No oil was injected. There was no side arm feeder. No vacuum was drawn. The compounded material was conveyed through a water bath and subsequently cut by a strand cutting pelletizer. After collection, the granulated material is passed through N₂Purged and then sealed in an aluminum bag.

The composition of the first masterbatch (MB1) was 50 wt% LL DPE 1, 25 wt% ZnO and 25 wt% Surlyn 9150. the composition of the second masterbatch (MB2) was 90 wt% LL DPE 1 and 10 wt% Cu₂O. example and counter-example formulations were produced using appropriate amounts of pure LL DPE 1, MB1, and MB2 to obtain the target wt% for each of the compositions listed.

TABLE 2 blown film line Process parameters

Parameter(s)	Unit of	No TiO2Film of MB	Containing TiO2Film of MB
				Feeding of the feedstock	m/min	15	15
Flattening	cm	23.5	23.5
				Frosted line	cm	14	14
B.U.R	Ratio of	2.5	2.5
				Die gap	mm	2.0	2.0
Melt temperature-extrusion A	℃	218	218
				Melt temperature-extrusion B	℃	226	226
Melt temperature-extrusion C	℃	215	215
				RPM-extrusion A	rpm	51	51
RPM extrusion part B	rpm	50	50
				RPM-extrusion C	rpm	32	32
Total output	kg/hr	8.8	8.8
				Total thickness of film	mm	0.023	0.056

2. Odour suppression

The compositions of the Comparative Sample (CS) and the Inventive Example (IE) are shown in table 3.

Odor inhibition values (OSV) are provided in table 3 below.

The concentration is measured two days later using the reference sample (CS 1) as a calibration standard, and the concentration in the reference sample may change two days later, so the concentration in the sample should be regarded as a change from the reference sample.

TABLE 3 odor inhibition values and blown film Properties

The zinc ionomer used in table 3 is Surlyn9150

*TiO₂MB-Titania masterbatch, 70 wt% TiO in 30 wt% LL DPE Carrier₂Powder added to obtain white color

In table 3, the component amounts for each sample resulted in 100 wt% of the total sample composition. By comparing the OSV of CS3 (28%) with the OSVs of CS 1 and 2 (12% and 2%, respectively), it can be readily observed that the ZnO/zinc ionomer combination is effective in increasing the OSV compared to a composition without any odour suppression technology. However, surprisingly, despite the Cu₂O as part of the odor inhibitor of the present invention at very low loadings (i.e., ZnO, Zinc ionomer and Cu in IE 2)₂Of a combination of O<10%) but compared to 28% CS 3OSV (i.e., with zinc ionomer and ZnO, and no Cu present)₂Sample of O) which can further increase the OSV to 64%. Addition of Cu₂O unexpectedly allows the ZnO/Zinc ionomer concentration in the composition to be reduced by 50% while maintaining the OSV ratio in the absence of Cu₂The ZnO/zinc ionomer combination of O is nearly 50% higher as can be observed by comparing the OSV of IE3 (49%) with the OSV of CS3 (28%). It was further observed that the ZnO/zinc ionomer combination still exhibited a significant effect on OSV, as the higher loading of these materials with 0.1 wt% Cu₂The O combination exhibited the highest OSV of inventive examples IE1 (80%) and IE2 (64%) as shown in table 3.

It is specifically intended that the present invention not be limited to the embodiments and illustrations contained herein, but include modified forms of those embodiments including portions of the embodiments and combinations of elements of different embodiments as come within the scope of the following claims.