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Block copolymers, compositions and films

A technology of block copolymers and compositions, applied in chemical instruments and methods, synthetic resin layered products, coatings, etc., can solve the problems of low adhesion and low bonding force of polyolefin resins, and achieve strong adhesion Effect

Active Publication Date: 2021-09-07
OTSUKA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even the methods of Patent Documents 3 to 5 have the problem of low adhesion and joining force to polyolefin resins.

Method used

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  • Block copolymers, compositions and films
  • Block copolymers, compositions and films
  • Block copolymers, compositions and films

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0202] Block copolymer Nos. 2 to 15 were prepared in the same manner as the preparation method of block copolymer No. 1. Tables 2 and 3 show the raw material monomers, organotellurium compounds, azo-based polymerization initiators, solvents, polymerization conditions, and polymerization ratios used. In addition, in Tables 4 and 5, Mw, PDI, etc. of each block copolymer are given.

[0203] [Table 2]

[0204]

[0205] [table 3]

[0206]

[0207] [Table 4]

[0208]

[0209] [table 5]

[0210]

[0211] (Random Copolymer No.1)

[0212] 41.5 mg of BTEE, 5.40 g of IBXA, 2.90 g of BA, 4.5 mg of AIBN, and 7.50 g of anisole were placed in a flask equipped with an argon conduit and a stirring blade, and reacted at 60° C. for 87 hours to perform polymerization. The polymerization rate of IBXA and BA was 100%. In addition, Mw of obtained random copolymer No. 1 was 62,190, and PDI was 1.26. After completion of the reaction, an organic solvent (anisole, etc.) is added to th...

Embodiment approach 1

[0247] A block copolymer, characterized in that it has an A block and a B block, the A block has a structural unit derived from a vinyl monomer having a polycyclic aliphatic hydrocarbon group, and the B block has a structure unit derived from an ethylene The structural unit of the base monomer, the average glass transition temperature of the A block is above 25°C, the average glass transition temperature of the B block is lower than the average glass transition temperature of the A block, and the The difference between the average glass transition temperature of the A block and the average glass transition temperature of the B block is 50° C. or more.

Embodiment approach 2

[0249] The block copolymer according to Embodiment 1, wherein the block copolymer is an A-B-A type block copolymer.

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Abstract

To provide a block copolymer that does not use chlorine-containing compounds and has strong adhesion (adhesion) not only to high-polarity materials but also to low-polarity materials. A block copolymer, characterized in that it has an A block and a B block, the A block has a structural unit derived from a vinyl monomer having a polycyclic aliphatic hydrocarbon group, and the B block has a structural unit derived from an ethylene monomer. The structural unit of the base monomer, the average glass transition temperature of the A block is above 25°C, the average glass transition temperature of the B block is lower than the average glass transition temperature of the A block, and the The difference between the average glass transition temperature of the A block and the average glass transition temperature of the B block is 50° C. or more.

Description

technical field [0001] The present invention relates to a block copolymer, a composition containing the block copolymer, and a film having a layer formed from the composition. Background technique [0002] Polypropylene resin (hereinafter also referred to as "PP") and polyethylene resin (hereinafter also referred to as "PE") are inexpensive general-purpose resins with excellent moldability, chemical resistance, water resistance, and electrical properties. . The PP and PE are widely used in automobiles, home appliances, agriculture, printing and the like. In addition, cycloolefin resins (hereinafter also referred to as "COP") have excellent characteristics such as high transparency, low hygroscopicity, and low specific gravity. This COP is used as a glass replacement material and a transparent plastic replacement material for optical components such as displays and touch panels. However, due to the low polarity of polyolefin resins such as PP, PE, and COP, there are few fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00B32B27/30C08L53/00C09D5/00C09D153/00C09J153/00
CPCB32B27/30C09D5/00C08F293/00C09D153/00C09J153/00C08L53/00B32B27/08B32B27/308C08J5/18C09D5/002C08F293/005C08K7/04
Inventor 石飞宏幸
Owner OTSUKA CHEM CO LTD
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