BLOCK COPOLYMER, DISPERSANT, COLORING COMPOSITION, AND COLOR FILTER

WIPO Patent Application WO/2019/107020

A1

[Problem] To provide a block copolymer which has excellent heat resistance and can be used as a dispersant. [Solution] The present invention provides a block copolymer having block A and block B, wherein block A contains a structural unit derived from a (meth)acrylic vinyl monomer, the content of a structural unit represented by general formula (1) in block A is less than 5 mass%, and the content of a structural unit represented by general formula (1) in block B is at least 5 mass%. [In formula (1), R11-R13 represent hydrocarbons. R11-R13 may form cyclic structures. R14 represents a divalent hydrocarbon. R15 represents a hydrogen atom or an ethyl group. Z- represents a counter ion represented by general formula (2-1) or (2-2). In formulae (2-1) and (2-2), R21 and R22 represent alkyl groups or aromatic groups.]

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WO/2002/068487	USE OF AMPHILIC BLOCK COPOLYMERS IN ORDER TO INCREASE THE WATER AFFINITY OF LOW-ENERGY SURFACES

ISHITOBI HIROYUKI (JP)
SHIMIZU TATSUHIKO (JP)

PCT/JP2018/039414

June 06, 2019

October 24, 2018

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OTSUKA CHEMICAL CO LTD (JP)

C08F293/00; C08F8/44; C08L53/00; G02B5/20

JP2017082198A	2017-05-18
JP2002534542A	2002-10-15
JP2017019937A	2017-01-26

FUTAKUCHI Osamu (JP)

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