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Rubber plug material for penicillin drugs and preparation method thereof

A penicillin and rubber stopper technology, applied in the field of chemical materials, can solve problems such as poor sealing performance, poor rubber stopper performance and influence

Inactive Publication Date: 2014-04-16
应城市恒天药业包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor material performance of the rubber plug, one or some substances in the interior have the defects of difficult processing and poor sealing performance, and some also release some odor, which will have a certain impact on the user.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The invention is prepared by mixing the following raw materials according to weight percentage: 40% of butyl rubber, 20% of ethylene-propylene copolymer, 35% of filler, 3.5% of phenolic resin and 1.5% of coloring agent. The viscosity-average molecular weight of butyl rubber is 80,000, the Mooney viscosity ML1+8 (100°C) is 40 to 70, and the degree of unsaturation is 0.7 to 1.5 mol%. The melting point of ethylene-propylene copolymer is ≤120°C, the Mooney viscosity ML1+4 (100°C) is 40 to 80, partially cross-linked ethylene-propylene elastomer, and propylene grafted ethylene-propylene elastomer. The filler is mixed with clay, talcum powder and white carbon black in a weight ratio of 2:1:1. The preparation method is to knead the above-mentioned materials in a mixer, mix them under the condition of 130°C to 190°C, preferably 140°C to 160°C, and form them by compression molding or injection molding.

Embodiment 2

[0013] The invention is prepared by mixing the following raw materials according to weight percentage: 30% of butyl rubber, 15% of ethylene-propylene copolymer, 50% of filler, 4% of phenolic resin and 1% of coloring agent. The viscosity-average molecular weight of butyl rubber is 80,000, the Mooney viscosity ML1+8 (100°C) is 40 to 70, and the degree of unsaturation is 0.7 to 1.5 mol%. The melting point of ethylene-propylene copolymer is ≤120°C, the Mooney viscosity ML1+4 (100°C) is 40 to 80, partially cross-linked ethylene-propylene elastomer, and propylene grafted ethylene-propylene elastomer. The filler is mixed with clay, talcum powder and white carbon black in a weight ratio of 2:1:1. The preparation method is to knead the above-mentioned materials in a mixer, mix them under the condition of 130°C to 190°C, preferably 140°C to 160°C, and form them by compression molding or injection molding.

Embodiment 3

[0015] The invention is prepared by mixing the following raw materials according to weight percentage: 30% of halogenated butyl rubber, 20% of ethylene-propylene copolymer, 45% of filler, 4.5% of phenolic resin and 0.5% of coloring agent. The Mooney viscosity ML1+8 (100°C) of the halogenated butyl rubber is 40 to 70, the degree of unsaturation is 0.7 to 1.5 mol%, and the weight ratio of the halogen content is 0.5 to 3.0%. The melting point of ethylene-propylene copolymer is ≤120°C, and the Mooney viscosity ML1+4 (100°C) is 40 to 80. The filler is mixed with clay, talcum powder and white carbon black in a weight ratio of 2:1:1. The preparation method is to knead the above-mentioned materials in a mixer, mix them under the condition of 130°C to 190°C, preferably 140°C to 160°C, and form them by compression molding or injection molding.

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Abstract

The invention relates to a chemical material, in particular to a rubber plug material for penicillin drugs and a preparation method thereof. The rubber plug material is prepared by mixing the following raw materials in percentage by weight: 20%-40% of synthetic rubber, 10%-20% of thermoplastic elastomer, 30%-50% of fillers, 3%-8.5% of cross-linking agents and 0.5%-1.5% of colorants, wherein the synthetic rubber is butyl rubber, polyisobutene rubber or halogenated butyl rubber; the thermoplastic elastomer is styryl elastomer or polyolefin thermoplastic elastomer; the fillers are one or more of argil, talc powders and white carbon black; the cross-linking agents are metal oxide or phenolic resin; the colorants are titanium dioxide, carbon black or mixtures thereof. The rubber plug material for penicillin drugs prepared by the invention is high in mechanical strength and good in flexibility, and can both meet usage requirements and processing requirements for rubber plug materials for penicillin drugs, and meet the requirements for the compatibility when liquid drugs are in contact with the rubber plug materials after sealing.

Description

technical field [0001] The invention relates to a chemical material, in particular to a rubber plug material for penicillin drugs and a preparation method thereof. Background technique [0002] At present, there are many types of rubber stoppers for penicillin drugs in the market, and the materials are various. However, due to the poor material performance of the rubber plug, one or some substances in the interior have the defects of difficult processing and poor sealing performance, and some also release some odors, which will have a certain impact on the user. Contents of the invention [0003] The object of the present invention is to solve the deficiency of the existing rubber stopper material for penicillin drugs, and provide a rubber stopper material for penicillin drug and its preparation method, which can meet the use requirements and processing requirements of penicillin drug stoppers, It can also meet the requirements on the compatibility of the contacted liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/22C08L9/00C08L23/28C08L23/08C08L23/16C08L25/04C08L61/06C08K3/34C08K3/36C08K3/22C08K3/04
CPCC08L23/22C08K2201/014C08L23/283C08L2205/03C08L2207/04
Inventor 夏汉桥黄爱华张雾云徐小明朱素芳
Owner 应城市恒天药业包装有限公司
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