阅读说明：本技术 特定聚合物用于产生抗污染效果的用途 (Use of specific polymers for producing an anti-pollution effect ) 是由 A·梅琳 H·里德尔 J·P·科赫 H·贡德克 P·赫斯塞尔 于 2018-04-13 设计创作，主要内容包括：本发明涉及聚合物或包含所述聚合物以及额外的其他已知化妆品成分的化妆产品在人类皮肤或对人类头发上导致抗污染作用,尤其是保护人类皮肤或人类头发免受粉尘影响的用途,其中所述聚合物为阳离子、阴离子或非离子聚合物,并且其中所述聚合物在水中在20℃下至少在4-9的pH下具有至少0.01g聚合物/100g水的水溶解度。(The present invention relates to the use of a polymer or a cosmetic product comprising said polymer and additionally other known cosmetic ingredients, wherein the polymer is a cationic, anionic or nonionic polymer, and wherein the polymer has a water solubility in water of at least 0.01g polymer/100 g water at 20 ℃ at least at a pH of 4 to 9, to cause an anti-pollution effect on human skin or human hair, in particular to protect human skin or human hair from the effects of dust.)

1. Use of a polymer or a cosmetic product comprising said polymer and additionally other known cosmetic ingredients for producing an anti-soiling effect on human skin or on human hair, in particular for protecting human skin or human hair against the effects of dust, in particular against the effects of fine dust,

wherein the polymer has a water solubility in water of at least 0.01g polymer/100 g water at 20 ℃ at least at a pH of 4 to 9,

and wherein the polymer is selected from the group consisting of:

the amount of polyacrylic acid,

polyacrylic acids comprising up to 1% by weight of repeating units derived from monomers comprising at least two polymerizable ethylenically unsaturated double bonds so that these can be branched or crosslinked,

a copolymer of methacrylic acid and ethyl acrylate, optionally further comprising recurring units derived from at least one monomer selected from the group consisting of: acrylic acid, methacrylamide, alkyl acrylates having 2 to 30 carbon atoms in the alkyl radical, alkyl methacrylates having 2 to 30 carbon atoms in the alkyl radical, methacrylic acid and C₁₂-C₃₀Esters of fatty alcohols, wherein the fatty alcohols have been ethoxylated with 1 to 100 ethylene oxide units, and monomers which contain at least two polymerizable ethylenically unsaturated double bonds to make these available for branching or crosslinking, and

copolymers of vinylpyrrolidone with at least one other ethylenically unsaturated polymerizable monomer, where the proportion of vinylpyrrolidone in the copolymer is up to 90% by weight, preferably up to 80% by weight, in particular up to 70% by weight,

wherein in case the polymer comprises repeating units derived from acrylic acid or methacrylic acid, the repeating units are present in the form of the free acid or a salt, wherein if they are present in the form of a salt, the salt is preferably an alkali metal salt, especially a sodium salt.

2. Use according to claim 1, wherein the monomer comprising at least two polymerizable ethylenically unsaturated double bonds is pentaerythritol triallyl ether.

3. Use according to claim 1, wherein the polymer is a copolymer of vinylpyrrolidone and at least one other ethylenically unsaturated polymerizable monomer, wherein the proportion of vinylpyrrolidone in the copolymer is up to 90% by weight, preferably up to 80% by weight. Especially up to 70% by weight, and wherein the at least one other ethylenically unsaturated polymerizable monomer is selected from the group consisting of vinylimidazoles, methylvinylimidazoles

4. Use according to claim 3, wherein the anion is selected from the group consisting of chloride and (H)₃C-O-SO₃)^-。

5. Use according to any one of claims 1 to 4, wherein the polymer preferably has a glass transition temperature of at least 70 ℃.

6. Use according to any one of claims 1 to 5, wherein the average molar mass (weight average Mw) of the polymer is at least 100000 g/mol.

7. Use according to any one of claims 1 to 6, wherein the polymer is selected from the group consisting of:

polyacrylic acids comprising up to 1% by weight of repeating units derived from monomers comprising at least two polymerizable ethylenically unsaturated double bonds so that these can be branched or crosslinked,

copolymers composed of 30 to 60% by weight of ethyl acrylate, 30 to 60% by weight of methacrylic acid, 5 to 30% by weight of methacrylamide, 0.1 to 10% by weight of C18 alkyl- (EO)25 methacrylate and 0.01 to 1.0% by weight of pentaerythritol triallyl ether,

copolymers composed of 30 to 60% by weight of ethyl acrylate and 40 to 70% by weight of methacrylic acid,

copolymers composed of 40 to 60% by weight of ethyl acrylate, 30 to 50% by weight of methacrylic acid, 5 to 15% by weight of acrylic acid and 0.01 to 1.0% by weight of pentaerythritol triallyl ether,

terpolymers composed of 60 to 80% by weight of tert-butyl acrylate, 5 to 20% by weight of ethyl acrylate and 10 to 30% by weight of methacrylic acid,

a copolymer consisting of 40 to 65% by weight of vinylpyrrolidone, 25 to 35% by weight of methacrylamide, 5 to 20% by weight of vinylimidazole and 5 to 20% by weight of quaternary (methylated) vinylimidazole, and

copolymers composed of 50 to 70% by weight of vinylpyrrolidone, 20 to 40% by weight of methacrylamide and 1 to 10% by weight of vinylimidazole.

8. Use according to any one of claims 1 to 7, wherein a cosmetic product is used comprising the polymer and additionally other known cosmetic ingredients, and wherein the polymer is present in the product at a concentration of 0.01 to 5% by weight, preferably 0.05 to 2% by weight, preferably 0.1 to 1.5% by weight.

9. Use according to claim 8, wherein the cosmetic product comprises at least water as an additional other known cosmetic ingredient in addition to the polymer, and wherein the product comprises at least 20 wt.%, preferably at least 50 wt.%, preferably at least 99.9 wt.% of water, and wherein the polymer is present in a form which is completely dispersed, suspended, dissolved or swollen in water at 20 ℃.

10. Use according to any one of claims 1 to 9, wherein a cosmetic product comprising the polymer and additionally other known cosmetic ingredients is used, and wherein the cosmetic product is a cosmetic product for protecting, caring for and/or cleansing the skin, or for caring for and/or cleansing the hair.

11. Use according to any one of claims 1 to 9, wherein a cosmetic product is used comprising the polymer and additionally other known cosmetic ingredients, and wherein the cosmetic product is selected from aqueous polymer solutions (i.e. hydrogels), emulsifier-free emulsions (i.e. gel creams), emulsions such as creams or milks.

12. A method of imparting an anti-soiling effect on human skin or human hair, in particular protecting human skin or human hair from dust, in particular fine dust, which method comprises applying a polymer as defined in any one of the preceding claims, or a cosmetic product comprising a polymer as defined in any one of the preceding claims and additionally other known cosmetic ingredients, to human skin or human hair in need of an anti-soiling effect, in particular against the effect of dust, in particular against the effect of fine dust.

Examples

A1: test method for testing anti-pollution effect

In order to test whether a substance has an anti-pollution effect on human skin, in particular to protect human skin from dust, in particular fine dust, the test method described below is used.

Activated carbon (obtained from Carl Roth GmbH of Karlsruhe, Germany) was used as a protection model. The activated carbon is microcrystalline carbon. There is a difference in size between activated carbon particles and fine dust particles. Nevertheless, activated carbon is a suitable model substance for fine dust. Activated carbon is also suitable for human research because it is toxicologically safe compared to many other substances.

A test device was developed for this method in order to be able to study the anti-adhesive effect of the substance to be tested on the skin. In this case, the equipment used is for the definitive application of activated carbon to the underarm of the human body. In this case, a defined amount of activated carbon is placed in the chamber and applied to the underarm skin by air flow at standard pressure.

The test substance was applied to the skin pre-cleansed with ethanol. For this purpose, standardized amounts of the test substance are applied to defined areas of the underarm skin (if not otherwise stated below, this is 2mg/cm²). First, each skin site was recorded by photographic recording prior to treatment. After the test substance was applied, another picture of the same site was taken. After a drying time of 10 minutes, activated carbon was applied by air blowing. After treatment with activated carbon, the photograph was further recorded. These photographs were used to determine the amount of soil (activated carbon) adhering to the skin. The method is performed on four different sites under the armpit for each test substance.

After the described measurements were performed on all four sites under the armpit, the difference in the ability of the adherent soil (activated carbon) to be washed away was tested. For this purpose, a defined amount of water is applied to the respective skin site.

When recording a photograph, it is ensured that the light conditions are consistent. The comparison of the processing areas is performed by means of a suitable computer program. For this purpose, the mean gray value is taken as baseline. The value of skin with attached activated carbon was subtracted from the value of the same skin site without activated carbon. The larger the difference in the values obtained, the more activated carbon adheres to the skin. Subsequently, the mean and standard deviation of all subjects (if not otherwise stated, this is 11) were calculated for each subject. The ability to be washed away is determined by subtracting the mean gray value after washing from the mean gray value before washing. The results are described relative to the results for untreated skin.

A1-1: test method for testing the anti-pollution effect on hair

The effect on hair was studied in a similar way: each hair was treated with the test substance and then exposed to a defined amount of activated carbon by means of a gas stream in a chamber using a suitable apparatus. Each hair was photographed with a digital microscope and the degree of soiling quantified by photographic evaluation. The individual hairs were rinsed with a defined amount of water and again photographed by means of a digital microscope and the corresponding soiling was determined.

A2: method for determining the glass transition temperature Tg

The glass transition temperature Tg was determined as follows. The polymer in the form of an aqueous dispersion was freeze-dried before the measurement. Like all other polymers, they were subsequently dried in the DSC instrument used (TA Instruments DSC Q100). The samples were run isothermally at 80 ℃ for 1 hour. After this run, an isothermal run was carried out for an additional 30 minutes until a constant weight sample was obtained. The determination of the glass transition temperature Tg of the polymers was carried out in the MDSC mode (DSC measurement) using the same instrument. A standard aluminum pan containing 2-10mg of dry polymer was heated at a heating rate of 1K/min and a modulation rate of 0.5K/min over a temperature range of-50 ℃ to 200 ℃. The reversible heating signal was evaluated according to the standard "glass/step transition" of the "Universal Analysis 2000" software (version 4.7A, TA Instruments, Eschborn/Germany). The glass transition temperature is designated as the inflection point of the curve.

B: test substance

Polymers 1 to 9 described below were tested. % represents% by weight.

A first group: polymers or copolymers of acrylic or methacrylic acid

Comments on the presentation: "Acrylate" is understood to mean acrylic acid and methacrylic acid and salts and esters thereof

Second group: cationic polymers

Third group: caprolactam-containing polymers

Polymer numbering	Name (R)	More accurate representation
			Polymer 6	Polyvinyl caprolactam	N-vinyl caprolactam homopolymer

And a fourth group: copolymers of Vinylpyrrolidone (VP), Vinylimidazole (VI) and optionally further monomers

Comparison group: polycarbonates and polyurethanes

C: testing of the properties of the polymer and the results of the test (anti-adhesion/wash resistance measured using a sample containing 1% by weight of polymer in water):

these results show that polymers 1 to 7 resulted in the desired anti-fouling effect, whereas polymers 8 and 9 did not. It is envisaged that those polymers which act as dust protection also provide continuous and comprehensive protection against air pollution, not only dust, but even other substances which constitute air pollution.

C-1: results of the test on the hair

These results show that polymers 3 to 5 have the desired anti-pollution effect even on the hair, whereas polymer 9 does not.

D: formulation

The following formulations show by way of example how a cosmetic product comprising the above-mentioned polymers can be built up and should therefore have an anti-soiling effect.

The numerical values are in% by weight.

Sometimes, the polymer has been introduced into the formulation in solution or other non-pure form. In these cases, the active content of the polymer is additionally specified.

Formulation 1: semi-solid gel (cream), formulations 2-7: low viscosity to free flowing gel milk

Formulations 8 to 13: gel milk applicable by pump spray and aerosol spray, as skin protectant and/or as overcoat and/or primer, additive in skin care preparation

Formulations 14 to 19: cream

Skin protection agent as daytime care, infant care, facial care and body care