阅读说明：本技术 一种软质塑料专用的环保型防霉抗菌剂 (Environment-friendly type mildew-proof antibacterial agent special for soft plastic ) 是由 何文安 何天安 于 2020-11-12 设计创作，主要内容包括：本发明公开了一种软质塑料专用的环保型防霉抗菌剂,包括异噻唑啉酮衍生物DCOIT5份～20份；对苯二甲酸二辛酯DOTP60份～150份；分散剂0.5份～2份。本发明的防霉抗菌剂不含任何重金属,不含有有毒的邻苯类物质,低毒无VOC,符合欧盟98/8/EC关于生物杀灭剂类产品指令,符合欧盟禁砷后的防霉抗菌剂产品,能通过欧盟环保PHA检测和邻苯类17P测试；本发明的防霉抗菌剂是一种对环境更友好,符合环保要求的抗菌剂,在使用范围内对人畜没有危害。(The invention discloses an environment-friendly mildew-proof antibacterial agent special for soft plastics, which comprises 5-20 parts of isothiazolinone derivatives DCOIT; 78-150 parts of dioctyl terephthalate DOTP 60; 0.5 to 2 portions of dispersant. The mildew-proof antibacterial agent does not contain any heavy metal, does not contain toxic o-benzene substances, has low toxicity and no VOC, accords with the instruction of 98/8/EC on biocide products, accords with the mildew-proof antibacterial agent products after arsenic prohibition of European Union, and can pass the environmental protection PHA detection and o-benzene 17P test of European Union; the mildew-proof antibacterial agent is an antibacterial agent which is more environment-friendly and meets the requirement of environmental protection, and has no harm to people and livestock in the application range.)

1. An environment-friendly mildew-proof antibacterial agent special for soft plastics is characterized by comprising the following components in parts by weight:

isothiazolinone derivatives DCOIT: 5-20 parts of a stabilizer;

dioctyl terephthalate DOTP: 60-150 parts;

dispersing agent: 0.5 to 2 portions.

2. The environment-friendly type antifungal/antibacterial agent as set forth in claim 1, wherein: comprises the following components by weight:

isothiazolinone derivatives DCOIT: 10 parts of (A);

dioctyl terephthalate DOTP: 89 parts of;

dispersing agent: 1 part.

3. The environment-friendly type antifungal/antibacterial agent as set forth in claim 1, wherein: the dispersing agent is FA-196 dispersing agent.

4. A process for producing the environmentally friendly type antifungal antibacterial agent according to any one of claims 1 to 3, comprising the steps of:

taking all raw materials according to a weight formula; all the raw materials are put into the high-speed dispersant and stirred for 20min to 50min at normal temperature until all the solid substances are dissolved; then standing for more than 8h, and packaging and storing after the product is in a transparent state.

5. A plastic is characterized by comprising the following components in parts by weight:

the environment-friendly mildew-proof antibacterial agent comprises: 1-2 parts;

PVC paste resin: 100-150 parts;

plasticizer diisononyl phthalate DINP: 50-80 parts;

epoxidized soybean oil ESO: 1-5 parts; barium zinc stabilizer: 2-8 parts;

calcium carbonate powder: 30-60 parts.

6. The plastic according to claim 5, comprising the following components by weight:

the environment-friendly mildew-proof antibacterial agent comprises: 2 parts of (1);

PVC paste resin: 100 parts of (A);

plasticizer diisononyl phthalate DINP: 60 parts;

epoxidized soybean oil ESO: 3 parts of a mixture; barium zinc stabilizer: 3 parts of a mixture;

calcium carbonate powder: 40 parts of the components.

7. The plastic of claim 5 or 6, wherein: the environment-friendly mildew-proof antibacterial agent comprises the following components in parts by weight:

isothiazolinone derivatives DCOIT: 5-20 parts of a stabilizer;

dioctyl terephthalate DOTP: 60-150 parts;

dispersing agent: 0.5 to 2 portions.

Technical Field

The invention relates to the technical field of chemical industry, in particular to an environment-friendly mildew-proof antibacterial agent special for soft plastics.

Background

The mildew preventive is a commonly used material in the field of chemical plastics, is originally organic mercury, organic tin, organic arsenic, phenols and formaldehyde compounds, has high toxicity and pollutes the environment, and is eliminated. The high volatility, high reactivity and toxicity of formaldehyde compounds limit their range of use.

At present, high-efficiency, spectral, low-toxicity and water-soluble sterilization preservatives tend to be used at home and abroad, the preservatives are required to have higher sterilization efficiency, the minimum inhibitory concentration MIC of common raw medicines to microorganisms is within dozens of PPM, the sterilization spectrum is wide, and the preservatives have effects on bacteria, mould, algae, saccharomycetes and the like; and meanwhile, the method is safe and reliable.

Therefore, the ideal mildew inhibitor should meet the following conditions in practical application: the bactericidal composition has extremely high killing capacity on various moulds, small using amount, wide application range and lasting effect; no harm to human and livestock, low toxicity or no toxicity, and no irritation to skin and eyes; the physical and chemical properties of the plastic are not affected; the stability is high, the heat resistance, the light resistance and the chemical resistance are good, the sublimation property is small, and the water, the oil or the solvent can not be easily pumped out; the compatibility with resin and other auxiliary agents is good, and no harmful chemical reaction occurs; the paint does not corrode metal or various materials and does not generate electric corrosion; no odor, light color and no pollution; convenient to use, low price.

The isothiazolinone derivative is a non-oxidizing bactericide with spectrum, high efficiency and low toxicity, and is commonly used in oil fields, papermaking, pesticides, cutting oil, leather, printing ink, dyes and leather making industries.

Disclosure of Invention

The invention aims to provide an environment-friendly mildew-proof antibacterial agent special for soft plastics.

In order to achieve the above purpose, an embodiment of the present invention provides an environment-friendly type mildew-proof antibacterial agent specially used for soft plastics, which comprises the following components by weight:

isothiazolinone derivatives DCOIT: 5-20 parts of a stabilizer;

dioctyl terephthalate DOTP: 60-150 parts;

dispersing agent: 0.5 to 2 portions.

The preferable environment-friendly mildew-proof antibacterial agent comprises the following components in parts by weight:

isothiazolinone derivatives DCOIT: 10 parts of (A);

dioctyl terephthalate DOTP: 89 parts of;

dispersing agent: 1 part.

Preferably, the dispersant is FA-196 dispersant.

In order to implement the technical scheme, the invention also discloses a preparation method of the environment-friendly mildew-proof antibacterial agent, which comprises the following steps:

taking all raw materials according to a weight formula; all the raw materials are put into the high-speed dispersant and stirred for 20min to 50min at normal temperature until all the solid substances are dissolved; then standing for more than 8h, and packaging and storing after the product is in a transparent state.

Based on the environment-friendly type mildew-proof antibacterial agent, the invention discloses plastic cement, which comprises the following components in parts by weight:

the environment-friendly mildew-proof antibacterial agent comprises: 1-2 parts;

PVC paste resin: 100-150 parts;

plasticizer diisononyl phthalate DINP: 50-80 parts;

epoxidized soybean oil ESO: 1-5 parts; barium zinc stabilizer: 2-8 parts;

calcium carbonate powder: 30-60 parts.

Preferably, the plastic comprises the following components by weight:

the environment-friendly mildew-proof antibacterial agent comprises: 2 parts of (1);

PVC paste resin: 100 parts of (A);

plasticizer diisononyl phthalate DINP: 60 parts;

epoxidized soybean oil ESO: 3 parts of a mixture; barium zinc stabilizer: 3 parts of a mixture;

calcium carbonate powder: 40 parts of the components.

In the invention, the preferable environment-friendly mildew-proof antibacterial agent used in the plastic comprises the following components in parts by weight:

isothiazolinone derivatives DCOIT: 5-20 parts of a stabilizer;

dioctyl terephthalate DOTP: 60-150 parts;

dispersing agent: 0.5 to 2 portions.

In summary, the invention has the following advantages:

1. the mildew-proof antibacterial agent does not contain any heavy metal, does not contain toxic o-benzene substances, has low toxicity and no VOC, accords with the instruction of 98/8/EC on biocide products, accords with the mildew-proof antibacterial agent products after arsenic prohibition of European Union, and can pass the environmental protection PHA detection and o-benzene 17P test of European Union; the mildew-proof antibacterial agent is an antibacterial agent which is more environment-friendly and meets the requirement of environmental protection, and has no harm to people and livestock in the application range.

2. The mildew-proof antibacterial agent is prepared by compounding the isothiazolinone derivative DCOIT and the dioctyl terephthalate DOTP, not only utilizes the spectrum antibacterial effect of the isothiazolinone derivative, but also improves the chemical stability by optimizing the proportion of the dioctyl terephthalate and the active component, so that the mildew-proof antibacterial agent has good thermal stability and is very stable to use under the conditions of strong ultraviolet rays and acid rain.

3. The massage mildew-proof antibacterial agent has a certain slow release effect, is low in antibacterial concentration, can prevent the development of microorganisms in a long time range, is durable in drug effect, can be effective on mould, bacteria, saccharomycetes and algae by adding a small amount of the massage mildew-proof antibacterial agent, and can keep an effective sterilization effect when the use concentration is 1-5%.

4. The mildew-proof antibacterial agent has good weather resistance and heat resistance, and is resistant to rain wash; the material can not be decomposed under the condition of high temperature below 300 ℃; has no corrosion to metal equipment.

5. The isothiazolinone derivative, the dioctyl terephthalate, the dispersant and the like can be compounded to prepare a uniform and stable liquid product; can be added into PVC coating slurry, PVC calendering film and PVC artificial leather coating agent, PVC wallpaper, PVC plastic toys and other soft plastic materials, and can simultaneously resist mildew, bacteria and algae.

Detailed Description

An environment-friendly mildew-proof antibacterial agent special for soft plastics comprises the following components in parts by weight:

isothiazolinone derivatives DCOIT: 5-20 parts of a stabilizer;

dioctyl terephthalate DOTP: 60-150 parts;

dispersing agent: 0.5 to 2 portions.

In the optimized specific embodiment of the invention, the environment-friendly mildew-proof antibacterial agent comprises the following components in parts by weight:

isothiazolinone derivatives DCOIT: 10 parts of (A);

dioctyl terephthalate DOTP: 89 parts of;

dispersing agent: 1 part.

Among them, FA-196 dispersant may be preferable.

In order to implement the environment-friendly type mildew-proof antibacterial agent, the invention also discloses a preparation method thereof, which comprises the following steps:

taking all raw materials according to a weight formula; all the raw materials are put into the high-speed dispersant and stirred for 20min to 50min at normal temperature until all the solid substances are dissolved; then standing for more than 8h, and packaging and storing after the product is in a transparent state.

The environment-friendly mildew-proof antibacterial agent can be applied to hard plastics and soft plastics, and based on the environment-friendly mildew-proof antibacterial agent, the invention provides a plastic which comprises the following components in parts by weight:

the environment-friendly mildew-proof antibacterial agent comprises: 1-2 parts;

PVC paste resin: 100-150 parts;

plasticizer diisononyl phthalate DINP: 50-80 parts;

epoxidized soybean oil ESO: 1-5 parts; barium zinc stabilizer: 2-8 parts;

calcium carbonate powder: 30-60 parts.

Preferably, the plastic of the invention comprises the following components by weight:

the environment-friendly mildew-proof antibacterial agent comprises: 2 parts of (1);

PVC paste resin: 100 parts of (A);

plasticizer diisononyl phthalate DINP: 60 parts;

epoxidized soybean oil ESO: 3 parts of a mixture; barium zinc stabilizer: 3 parts of a mixture;

calcium carbonate powder: 40 parts of the components.

More preferably, the environment-friendly mildew-proof antibacterial agent used in the plastic comprises the following components in parts by weight:

isothiazolinone derivatives DCOIT: 5-20 parts of a stabilizer;

dioctyl terephthalate DOTP: 60-150 parts;

dispersing agent: 0.5 to 2 portions.

Example 1: preparation of environment-friendly mildew-proof antibacterial agent

The raw materials comprise:

isothiazolinone derivatives DCOIT: 10 parts of (A);

dioctyl terephthalate DOTP: 89 parts of;

dispersing agent: 1 part.

The preparation method comprises the following steps: taking all raw materials according to a weight formula; all the raw materials are put into a high-speed dispersing agent and stirred for 30min at normal temperature until all solid substances are dissolved; and then standing for 10h, and packaging and storing after the product is in a transparent state.

Example 2: preparation of plastic based on environment-friendly type mildew-proof antibacterial agent

The raw materials comprise:

the environment-friendly mildew-proof antibacterial agent comprises: 2 parts of (1);

PVC paste resin: 100 parts of (A);

plasticizer diisononyl phthalate DINP: 60 parts;

epoxidized soybean oil ESO: 3 parts of a mixture; barium zinc stabilizer: 3 parts of a mixture;

calcium carbonate powder: 40 parts of the components.

The environment-friendly mildew-proof antibacterial agent comprises the following raw materials:

isothiazolinone derivatives DCOIT: 10 parts of (A);

dioctyl terephthalate DOTP: 89 parts of;

dispersing agent: 1 part.

The preparation method comprises the following steps: the raw materials according to the proportion are uniformly mixed and are extended into a film with the thickness of 1mm, and then the film is plasticized in a drying oven with the temperature of 200 ℃, and is taken out and cooled after being plasticized for 1.5min, so that the plastic product can be obtained.

Test example 1: detection of mildew resistance

The product tested in test example 1 was the plastic part of example 2.

Test example 1 control group: a plastic article comprising the following components:

PVC paste resin: 100 parts of (A);

plasticizer diisononyl phthalate DINP: 60 parts;

epoxidized soybean oil ESO: 3 parts of a mixture; barium zinc stabilizer: 3 parts of a mixture;

calcium carbonate powder: 40 parts of the components.

Namely, the control group of the experimental example 1 does not contain the environment-friendly type mildew-proof antibacterial agent.

(1) Test strains

Mixing fungal spore suspensions were prepared using the following test fungi:

aspergillus niger ATCC 9642; penicillium pinophilum ATCC 11797; the chaetomium globosum ATCC 6205.

(2) Sample preparation

The sample may be a 50mm x 50mm square piece, or a 50mm diameter circular piece, or a piece (rod or tube) cut from the material to be tested that is no less than 76mm long.

(3) Sample inoculation

Sufficient nutrient salt medium is poured into a suitably sterilized vessel and after the medium has solidified, a sample is placed on the surface. The whole surface, including the surface of the test sample, was inoculated and the spore suspension was mixed by spraying with a sterile spray at a pressure of up to 110 kPa.

(4) Test method

And (3) a simulation observation method, which is to artificially add a certain amount of mould on the antibacterial sample to be detected under the condition that the sample to be detected is assumed to be in a proper environment by simulation so as to attack the sample to be detected. And (5) verifying and judging whether the detected sample has a mildew-proof function or not by observation and comparison after culturing for a certain time.

(5) Incubation time

The incubation time for the test standard should be 28 days. If the sample shows a growth grade of 2 or more, the test may be terminated in less than 28 days.

(6) Evaluation of results

Observation of mould growth on the samples	Evaluation of
		Not long	0
Trace growth (less than 10%)	1
		Slight growth (10-30%)	2
Moderate growth (30-60%)	3
		Severe growth (60% -overall coverage)	4

(7) The experimental results are as follows:

test group	Evaluation results
		Inventive example 2	0
Test example 1 control group	4

And (4) test conclusion:

as can be seen from the test results of test example 1, the control group of test example 1, to which no antifungal/antibacterial agent was added, showed rapid growth of mold, and the evaluation result according to the Standard ASTM G21 for mildew resistance test was 4, and the evaluation result of the plastic article of example 2, to which the antifungal/antibacterial agent of the present invention was added, was 0, indicating that the plastic article to which the antifungal/antibacterial agent of the present invention was added had a very good effect of the antifungal/antibacterial agent.