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Medical silicone rubber and polyvinyl acetate latex co-polymerized rubber plug and preparation method thereof

A polyvinyl acetate and silicone rubber technology, which is applied in the field of medical rubber processing, can solve the problems that the vulcanization system is prone to pollute the human body, pharmaceutical exudates, volatiles, difficult to prepare medical rubber products, and the use safety is not strong. Eliminate the mixing of toxic ingredients, excellent mechanical properties, and novel formula design

Inactive Publication Date: 2016-02-10
ANHUI ZHONGMA RUBBER & PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under the conditions of high temperature and high pressure, traditional medical rubber products tend to produce exudates and volatiles that pollute the human body and pharmaceuticals in their vulcanization system, making it difficult to prepare medical rubber products that meet the highest quality standards for pharmaceuticals
Existing medical rubber products and preparation methods thereof have complicated process, poor product environmental protection, weak use safety, and low service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A medical silicone rubber-polyvinyl acetate latex copolymer rubber stopper is made of the following raw materials in parts by mass:

[0032] Including auxiliary silica gel, polyvinyl acetate latex and mixed solution;

[0033] Among them: auxiliary silica gel includes: 80 parts of methyl vinyl silicone rubber, 10 parts of polypropylene, 8 parts of sodium carboxymethyl starch, 5 parts of gelatin, 4 parts of octamethylcyclotetrasilazane, dioctyl phthalate 2 parts of ester, 3 parts of lactic acid, 2 parts of hydrogen-containing silicone oil, 1 part of accelerator TMTD, 1 part of dicumyl peroxide, 3 parts of zinc oxide, 1 part of stearic acid, 0.5 parts of microcrystalline wax, 1 part of white carbon black , 2 parts of antioxidant;

[0034] Polyvinyl acetate latex includes: polyvinyl alcohol: 15 parts, distilled water: 130 parts, sodium dodecylbenzenesulfonate: 2 parts, OP-10: 1 part, potassium persulfate: 1 part, vinyl acetate: 160 parts , dibutyl phthalate: 1 part, hydro...

Embodiment 2

[0037] A medical silicone rubber-polyvinyl acetate latex copolymer rubber stopper is made of the following raw materials in parts by mass:

[0038] Including auxiliary silica gel, polyvinyl acetate latex and mixed solution;

[0039] Among them: auxiliary silica gel includes: 100 parts of methyl vinyl silicone rubber, 15 parts of polypropylene, 12 parts of sodium carboxymethyl starch, 8 parts of gelatin, 8 parts of octamethylcyclotetrasilazane, dioctyl phthalate 5 parts of ester, 7 parts of lactic acid, 5 parts of hydrogen-containing silicone oil, 4 parts of accelerator TMTD, 2.5 parts of dicumyl peroxide, 5 parts of zinc oxide, 3 parts of stearic acid, 1.5 parts of microcrystalline wax, 2 parts of white carbon black , 5 parts of antioxidant;

[0040] Polyvinyl acetate latex includes: polyvinyl alcohol: 20 parts, distilled water: 150 parts, sodium dodecylbenzenesulfonate: 5 parts, OP-10: 3 parts, potassium persulfate: 2 parts, vinyl acetate: 180 parts , Dibutyl phthalate: 2 p...

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Abstract

The invention provides a medical silicone rubber and polyvinyl acetate latex co-polymerized rubber plug and a preparation method thereof. The rubber plug comprises auxiliary silicone, polyvinyl acetate latex and a mixed solution. The preparation method comprises the following steps: separately adding the mixed solution to the auxiliary silicone and the polyvinyl acetate latex according to the ratio of 1:1.36, stirring for 10 minutes, taking 20% of mixed rubber comprising the polyvinyl acetate latex and the mixed solution to be mixed with the auxiliary silicone, stirring, adding the remaining 80% of the mixed rubber comprising the polyvinyl acetate latex and the mixed solution after 3 minutes, and continuously stirring for 2 minutes to obtain a colloid; cooling the colloid in air at the temperature of 15 DEG C for 1 day, and slicing to obtain the medical silicone rubber product, namely the rubber plug. The product prepared by the method is higher in chemical stability, free of irritation, high in safety, heat-proof and ageing-resistant, has an excellent mechanical property, and has certain medicine components compared with a common silicone rubber plug when being used as a medicinal liquid bottle plug; when the certain medicine components are combined with normal saline, components which are beneficial to a human body are volatilized, so that a medicinal liquid is prevented from being mixed with toxic components, and safety and benefits are guaranteed.

Description

Technical field: [0001] The invention relates to the technical field of medical rubber processing, in particular to a medical silicone rubber-polyvinyl acetate latex copolymer rubber stopper and a preparation method thereof. Background technique: [0002] With the development of society, there are more and more types of rubber products used in the medical and health field, such as rubber stoppers for various pharmaceutical bottles, pistons for sterile syringes, sealing rubber seals for injections, hoses, catheters, medical air cushions, sterilization Rubber medical gloves, baby pacifiers, blood transfusion tubes, etc. Ideal medical rubber products not only need to have good physical properties, but also must be non-toxic and chemically inert. In particular, rubber products in the body should have the characteristics of not causing disease, not damaging adjacent tissues, not causing allergies, and having good aging properties. [0003] Under the conditions of high temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L23/12C08L3/08C08L89/00C08L29/04C08L31/04C08L97/02C08K13/02C08K5/549C08K5/12C08K3/22C08K5/09C08K3/36C08K5/00
Inventor 张艳
Owner ANHUI ZHONGMA RUBBER & PLASTIC PROD
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