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Method for preparing highly hydrogenated segmented copolymer

A technology of block copolymers and hydrogenated blocks, which is applied in the field of mass production of highly hydrogenated vinyl aromatic/conjugated diene block copolymers, which can solve problems such as poor processability, low heat resistance, and poor light stability. question

Active Publication Date: 2013-04-24
TSRC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above-mentioned partially hydrogenated vinyl aromatic / conjugated diene block copolymers have been used in various fields, they suffer from some disadvantages, including low heat resistance, poor physical properties, poor processability, and problems such as poor stability, and those skilled in the art have tried to solve the above shortcomings by increasing the hydrogenation rate of the aromatic ring part of the block polymer

Method used

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  • Method for preparing highly hydrogenated segmented copolymer
  • Method for preparing highly hydrogenated segmented copolymer
  • Method for preparing highly hydrogenated segmented copolymer

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Embodiment

[0053] In order to make the present invention more understandable, the following detailed descriptions all refer to figure 1 and figure 2 ,in figure 1 It is a flow diagram of a method for producing a highly hydrogenated vinyl aromatic / conjugated diene block copolymer provided according to an embodiment of the present invention, and figure 2 Then it is a schematic diagram of a devolatilization system provided according to an embodiment of the present invention.

[0054] The presence of impurities in solvents and monomers and water, if they enter the polymerization system before being removed, will affect the activity of the polymerization catalyst. And a large amount of impurities will make the catalyst invalid or cause the ideal molecular weight of the polymer solution to be difficult to obtain.

[0055] The drying tower filled with activated alumina after drying and dehydration can generally be used to absorb moisture and impurities in solvents and monomers. Although th...

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Abstract

The invention relates to a method for preparing highly hydrogenated vinyl aromatic / conjugated diene segmented copolymer. The hydrogenation rate of the vinyl aromatic / conjugated diene segmented copolymer is over 90 percent. The obtained vinyl aromatic / conjugated diene segmented copolymer has the beneficial physical property suitable for the fields of CDs, optical thin films, light guide plates andthe like.

Description

technical field [0001] The present invention relates to a process for producing hydrogenated block copolymers, and more particularly to a process for the mass production of substantially hydrogenated vinyl aromatic / conjugated diene block copolymers. Background technique [0002] Vinyl aromatic / conjugated diene block copolymers generally comprise vinyl aromatic polymer blocks and conjugated diene polymer blocks. Partially hydrogenated vinyl aromatic / conjugated diene block copolymers, such as partially hydrogenated styrene-butadiene-styrene, commonly known as SEBS (Styrene-Ethylene-Butylene-Styrene), partially hydrogenated styrene- Isoprene-styrene, commonly known as SEPS (Styrene-Ethylene-Propylene-Styrene) is well known in the art, and the term "partially hydrogenated" used here means that the hydrogenation of the diene part of the block polymer has been Up to 95% or more, but the aromatic hydrogenation of the vinyl aromatic moiety is less than 90%. Although the above-ment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/04C08F297/04
Inventor 高桓村杨盛德侯宏杰蔡仲铭
Owner TSRC CORP
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