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Medical-grade thermoplastic elastomer industrial production device and production method

A technology for thermoplastic elastomers and production equipment, applied in the chemical industry, climate sustainability, sustainable manufacturing/processing, etc., can solve the problems of low hydrogenation degree, poor transparency, high impurity content, etc., and achieve low ash content, hydrogenation The effect of high hydrogen degree and narrow molecular weight distribution

Pending Publication Date: 2021-11-19
郭方飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, medical-grade SEBS mainly relies on imports. The products produced by a small number of SEBS manufacturers have low hydrogenation degree, high impurity content, and poor transparency.

Method used

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  • Medical-grade thermoplastic elastomer industrial production device and production method
  • Medical-grade thermoplastic elastomer industrial production device and production method
  • Medical-grade thermoplastic elastomer industrial production device and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] First put 900 parts of cyclohexane solvent into the polymerization kettle, then respectively add 15 parts of refined styrene, 70 parts of refined butadiene, and 15 parts of refined styrene into the polymerization kettle for block polymerization reaction, and control the polymerization temperature ≤ 60°C, the initiator uses n-butyllithium (amount of 0.07g / 100g polymer), the activator uses tetrahydrofuran (amount of 0.05g / 100g polymer), and the regulator uses tetramethylethylenediamine (amount of 0.04g / 100g polymer material) to obtain a polymer glue solution with a molecular weight of 170,000 to 200,000; the hydrogenation reaction was carried out using an aged aluminum-titanium catalyst (aluminum-titanium ratio of 5:1), and the addition amount was 0.06mmolTi / 100g polymer, resulting in The product is obtained after subsequent processing.

Embodiment 2

[0091] First put 900 parts of cyclohexane solvent into the polymerization kettle, then respectively add 15 parts of refined styrene, 70 parts of refined butadiene, and 15 parts of refined styrene into the polymerization kettle for block polymerization reaction, and control the polymerization temperature ≤ 60°C, the initiator uses n-butyllithium (amount of 0.07g / 100g polymer), the activator uses tetrahydrofuran (amount of 0.05g / 100g polymer), and the regulator uses ethylene glycol dibutyl ether (amount of 0.05g / 100g polymer material) to obtain a polymer glue solution with a molecular weight of 170,000 to 200,000; the hydrogenation reaction was carried out by using an aged aluminum-titanium catalyst (aluminum-titanium ratio of 4:1), and the addition amount was 0.06mmolTi / 100g polymer. The product is obtained after subsequent processing.

Embodiment 3

[0093] First put 900 parts of cyclohexane solvent into the polymerization kettle, then respectively add 6 parts of refined styrene, 88 parts of refined butadiene, and 6 parts of refined styrene into the polymerization kettle for block polymerization reaction, and control the polymerization temperature ≤ 60°C, the initiator uses n-butyllithium (amount of 0.07g / 100g polymer), the activator uses tetrahydrofuran (amount of 0.05g / 100g polymer), and the regulator uses tetramethylethylenediamine (amount of 0.06g / 100g polymer material) to obtain a polymer glue solution with a molecular weight of 170,000 to 200,000; the hydrogenation reaction was carried out using an aged aluminum-titanium catalyst (aluminum-titanium ratio of 5:1), and the addition amount was 0.08mmolTi / 100g polymer. The product is obtained after subsequent processing.

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PUM

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Abstract

The invention discloses a medical-grade thermoplastic elastomer industrial production device and production method, wherein the medical-grade thermoplastic elastomer industrial production device comprises a reaction unit, a decatalysis unit, a steam stripping unit and a post-treatment unit, and the medical-grade thermoplastic elastomer industrial production device further comprises a raw material refining unit. The technical process provided by the invention has excellent continuity. Through process integration and control of process parameters, an SEBS product produced by the process has the advantages of easy control of 1,2 butadiene content and molecular weight, narrow molecular weight distribution, high hydrogenation degree, low ash content, bright blending with PP, and no crystal point, and meets the requirements of medical and health-grade SEBS products.

Description

technical field [0001] The invention relates to the technical field of polymer chemical industry, and more specifically relates to a medical-grade thermoplastic elastomer industrial production device and production method. Background technique [0002] In the field of medical consumables, such as infusion tubes, infusion bags, medical rubber stoppers, etc., soft PVC has been widely used. A large amount of phthalate plasticizers are added to soft PVC. Phthalate plasticizers are similar to environmental estrogens. The system produces potential harm and has certain teratogenicity and carcinogenicity. Therefore, the EU's Reach and RoHS laws are strictly controlled in industries such as electronic appliances, toys, clothing, auto parts, leather, shoes and furniture. [0003] Soft PVC is gradually being eliminated, and SEBS is considered to be the best substitute for soft PVC, ushering in new opportunities for development. However, at present, medical-grade SEBS mainly relies on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F297/04C08F8/04
CPCC08F297/04C08F8/04Y02P20/10
Inventor 郭方飞
Owner 郭方飞
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