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A kind of antibacterial plasticizer for pvc and preparation method thereof

A technology of plasticizing additives and solvents, which is applied in the field of antibacterial plasticizing additives for PVC and its preparation, can solve the problems that polyvinyl chloride does not have antibacterial properties, limits the application range of polyvinyl chloride, breeds bacteria and harmful microorganisms, etc., and achieves The effects of wide sterilization spectrum, free volume increase and control of preparation process conditions

Active Publication Date: 2020-06-12
YANGZHOU TIANXI PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of plasticizer is toxic and has been banned by the US Consumer Product Safety Commission (CPSC) from being used in child care appliances and toy products. From the above-mentioned new environmental protection laws, it can be seen that for PVC plastics with a large amount and a wide range, its plasticizer It is imperative to make non-toxic and environmentally friendly modification of plasticizers, and phthalate plasticizers are bound to be eliminated, which makes the development of environmentally friendly and non-toxic new plastic plasticizers a hot spot in plasticizer research
At the same time, because polyvinyl chloride does not have antibacterial properties, the surface of its products will become dirty after a period of time, and various harmful microorganisms such as bacteria, molds, and fungi will breed.
Especially when the objective conditions such as temperature and humidity are suitable, it is easier to reproduce and spread harmful microorganisms. Contacting different people will lead to cross-infection and become a source of bacterial pollution and disease transmission, which will bring harm to human health and limit the gathering to a certain extent. Application range of vinyl chloride
In order to make PVC have an antibacterial effect, it is usually necessary to add some antibacterial agents, but commonly used antibacterial agents have poor compatibility with PVC resins. Like plasticizers, they are easy to precipitate in PVC resin systems, which makes the development of PVC industry Rely on new plasticizer and antimicrobial products

Method used

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  • A kind of antibacterial plasticizer for pvc and preparation method thereof
  • A kind of antibacterial plasticizer for pvc and preparation method thereof
  • A kind of antibacterial plasticizer for pvc and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of synthetic steps of antibacterial plasticizing auxiliary agent for PVC is:

[0029] (1) Add 14.8g of phthalic anhydride and 80.5g of oleyl alcohol into a dry four-necked flask equipped with a water separator, a thermometer and a reflux condenser, mix well, heat up to 65°C, and add 1.9g of concentrated sulfuric acid and 1g of p-hydroxy Anisole, after the phthalic anhydride melts, heat up to 90°C, continue to stir for 4 hours, cool to room temperature, extract the product with ethyl acetate, wash with water 2 to 3 times, filter, dry, and distill off the solvent under reduced pressure to obtain intermediate product;

[0030] (2) Under inert gas protection conditions, add 66.7g of the intermediate product of step (1) into a four-necked flask, then add its 133.4g N'N-dimethylformamide, stir and mix evenly, then add 2.7g of carbonic acid Potassium and 1.4g p-hydroxyanisole, stirred at room temperature for 1h, then heated to 70°C, dissolved 67.9g N-(4-aminophenyl)-2-...

Embodiment 2

[0035] A kind of synthetic steps of antibacterial plasticizing auxiliary agent for PVC is:

[0036](1) Add 14.8g of phthalic anhydride and 94g of oleyl alcohol into a dry four-necked flask equipped with a water separator, a thermometer and a reflux condenser, mix well, heat up to 60°C, and add 3.3g of p-toluenesulfonic acid and 2.2g of For p-hydroxyanisole, after the phthalic anhydride melts, heat up to 88°C, continue to stir for 5 hours, then cool to room temperature, extract the product with ethyl acetate, wash with water 2 to 3 times, filter, dry, and distill under reduced pressure to remove the solvent. get intermediate products;

[0037] (2) Under the protection condition of inert gas, the intermediate product of 66.7g step (1) is joined in the four-necked flask, then add its 200g methylene chloride, stir and mix evenly, then add 4.7g sodium ethylate and 3.2g p-hydroxybenzene Methyl ether, stirred at room temperature for 2h, then raised the temperature to 70°C, dissolved...

Embodiment 3

[0039] A kind of synthetic steps of antibacterial plasticizing auxiliary agent for PVC is:

[0040] (1) Add 14.8g of phthalic anhydride and 107.4g of oleyl alcohol into a dry four-neck flask equipped with a water separator, a thermometer and a reflux condenser, mix well, heat up to 70°C, and add 4.9g of methanesulfonic acid and 1.8g of Hydroquinone, after the phthalic anhydride melts, heat up to 85°C, continue to stir for 6 hours, cool to room temperature, extract the product with ethyl acetate, wash with water 2 to 3 times, filter, dry, and distill off the solvent under reduced pressure to obtain mid product;

[0041] (2) Under inert gas protection conditions, the intermediate product of 66.7g step (1) is joined in the four-necked flask, then adds its 266.8g toluene, stirs and mixes evenly, then adds 5.8g potassium carbonate and 2.2g hydroquinone , stirred at room temperature for 2h, then raised the temperature to 70°C, dissolved 80g of N-(4-aminophenyl)-2-hydroxybenzamide i...

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Abstract

The invention belongs to the field of macromolecular assistants and particularly relates to an antibacterial plastification assistant for PVC and a preparation method thereof. The structural formula of the antibacterial plastification assistant for PVC is shown as the following description. In the structure of the antibacterial plastification assistant prepared by adopting the preparation method,the antibacterial plastification assistant for PVC has a stronger plastification function due to long chains generated through the reaction of phthalic anhydride and oleyl alcohol; contained N-(4-aminophenyl)-2-hydroxyl benzamide has a stronger antibacterial effect, a sterilization spectrum is wider, meanwhile N-H are increased, and the antibacterial effect is better compared with the effect of salicylanilide. The preparation method of the antibacterial plastification assistant for PVC is simple and easy to operate, preparation process conditions are easy to control, the preparation efficiencyis high, the prices of raw materials and the energy consumption of production are both lower, and the antibacterial plastification assistant is very suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of polymer additives, and in particular relates to an antibacterial plasticizing additive for PVC and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator. It is a homopolymer of vinyl chloride. Vinyl chloride homopolymer and vinyl chloride copolymer are collectively referred to as vinyl chloride resin. Because of its advantages of non-flammability, high chemical resistance, good electrical insulation performance, stable physical and chemical properties, and low price, it plays a very important role in industrial production and is widely used in industry, agriculture, transportation, construction, electronics, etc. Communications, household appliances, furniture, packaging and medical and health fields. It is also applied to infusion tubes, infusion bags, oxygen masks, toys, shoes, pipes, food packa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/20C08L27/06
CPCC08K5/20C08L27/06
Inventor 李丹丹
Owner YANGZHOU TIANXI PLASTICS CO LTD
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