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Medical polyvinyl chloride plastic and preparation process thereof

A technology of soft polyvinyl chloride and polyvinyl chloride resin, which is applied in the field of medical soft polyvinyl chloride plastics, can solve problems such as carcinogenicity, and achieve the effects of reducing environmental impact, rich sources, and easy processing and modification

Inactive Publication Date: 2007-07-18
上海新上化高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology helps prevent harm from certain chemical compounds called dioctyltoluene (DEHTP), which can be absorbed into food or drugs used during medical procedures like feeding tubes. These substances are commonly found naturally occurring throughout human body tissues including bone marrow cells where they form new blood vessels around them when needed. Different types of plastic material made with these soluble ingredients may cause problems if accidentally swallowed through their stomach contents. However this method does work well even at high concentrations without causing damage.

Problems solved by technology

The technical problem addressed by this patented technology relating to making materials like polyphtalean (PVC) which are resistant against chemicals or solvents found commonly throughout industrial settings can be related to finding ways to make them safe from harmful substances present during production processes without containing any residue left over after use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～2

[0029] formula:

[0030] medical soft polyvinyl chloride

composition

weight points

Example 1

Example 2

PVC resin

100

100

plasticizer

33

55

[0031] auxiliary plasticizer

8

5

stabilizer

2

1

antioxidant

0.3

0.3

lubricant

0.8

0.5

[0032] Plasticizer: diisononyl cyclohexane 1,2 dicarboxylate; auxiliary plasticizer: epoxy soybean oil; stabilizer: liquid calcium zinc stabilizer; antioxidant: tris(nonylphenyl phosphite) ; Lubricant: higher fatty acid pentaerythritol ester.

[0033] Preparation:

[0034] According to the proportion, polyvinyl chloride resin, plasticizer, stabilizer, auxiliary stabilizer, lubricant and antioxidant are kneaded and pre-mixed in a kneader and swelled. The kneading temperature is 120 ° C, and the kneading time is 10 minutes. Cool to 70°C, enter the doub...

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PUM

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Abstract

The present invention discloses one kind of soft polyvinyl chloride plastic for medical use and its preparation process, and features that polyvinyl chloride resin in 100 weight portions is compounded with plasticizer in 20-80 weight portions. The plasticizer is one or several selected from trioctyl trimellitate, tri-n-butyl citrate, tri-n-octyl citrate, cyclohexane-1, 2-diisononyl dicarboxyllate, dioctyl adipate and tri-n-hexyl butyrul citrate. The soft polyvinyl chloride plastic for medical use has low cost, high biocompatibility and environment friendship, and is suitable for making disposable medicinal product to avoid cross infection.

Description

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Claims

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Application Information

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Owner 上海新上化高分子材料有限公司
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