Powder component, resin composition for coating, and coating film

Patent metadata

Field	Value
Publication number	US-2024301234-A1
Application number	US-202418665549-A
Country	US
Kind code	A1
Filing date	May 15, 2024
Priority date	Nov 30, 2021
Publication date	Sep 12, 2024
Grant date	—

Abstract

An object of the present invention is to provide a powder component of which a coating film having excellent transparency can be formed, a resin composition for coating, and a coating film. A powder component of the present invention is a powder component containing a polyarylate containing a repeating unit represented by Formula (A-I) and a repeating unit represented by Formula (A-II), and a compound that is different from the polyarylate and that has a repeating unit represented by Formula (B), in which a value obtained by subtracting a measured value 1 from a measured value 2 is 2,000 ppm by mass or less. Measured value 1: a proportion of a mass of a compound represented by Formula (C) in the powder component with respect to a whole mass of the powder component. Measured value 2: a proportion of the mass of the compound represented by Formula (C) in a mixture obtained by mixing the powder component with diethylamine with respect to the whole mass of the powder component.

First claim

What is claimed is:

1 . A powder component comprising:
a polyarylate containing a repeating unit represented by Formula (A-I) and a repeating unit represented by Formula (A-II); and a compound that is different from the polyarylate and has a repeating unit represented by Formula (B), wherein a value obtained by subtracting a measured value 1 from a measured value 2 is 2,000 ppm by mass or less, the measured value 1: a proportion of a mass of a compound represented by Formula (C) in the powder component with respect to a whole mass of the powder component, the measured value 2: a proportion of the mass of the compound represented by Formula (C) in a mixture obtained by mixing the powder component with diethylamine with respect to the whole mass of the powder component,

in Formula (A-I), L 11 represents a group represented by —Ar 11 -(L 12 -Ar 12 ) n —, Ar 11 and Ar 12 each independently represent a benzene ring, L 12 represents —C(R 11 )(R 12 )—, R 11 and R 12 each independently represent a hydrogen atom or an alkyl group, one of R 11 and R 12 represents a hydrogen atom or a linear alkyl group and the other represents a branched alkyl group, n represents an integer of 1 or more,
in Formula (A-II), L 21 represents a group represented by Formula (L-1), a group represented by Formula (L-4), or a group formed by combining these groups,

in Formula (B), L 31 represents a group represented by Formula (L-1), a group represented by Formula (L-4), or a group formed by combining these groups,

in Formula (C), Z 41 and Z 42 each independently represent —OH or —N(C 2 H 5 ) 2 , L 41 represents a group represented by Formula (L-1), a group represented by Formula (L-4), or a group formed by combining these groups,

in Formula (L-1) and Formula (L-4), * represents a bonding position,
provided that in a case where the polyarylate contains one of the repeating unit represented by Formula (A-II), L 21 , L 31 , and L 41 represent the same group, or in a case where the polyarylate contains two or more of the repeating units represented by Formula (A-II), L 31 and L 41 are selected from any of the groups constituting L 21 in the two or more of the repeating units represented by Formula (A-II).

2 . The powder component according to claim 1 ,
wherein L 21 , L 31 , and L 41 are the group represented by Formula (L-1).

3 . A resin composition for coating, comprising:
the powder component according to claim 1 ; and a solvent.

4 . A coating film formed of the resin composition for coating according to claim 3 .

Assignees

• Fujifilm Corp

Inventors

• Ogawa Taiki
• Hironaka Koji
• Nozoe Yutaka
• Yamashita Junko
• Arai Michio
• USHIROGATA Keisuke

Classifications

• C09D167/03 Primary

  the dicarboxylic acids and dihydroxy compounds having the carboxyl - and the hydroxy groups directly linked to aromatic rings · CPC title

• C08G67/04

  Polyanhydrides · CPC title

• C08G63/199

  Acids or hydroxy compounds containing cycloaliphatic rings · CPC title

• C08G63/672

  Dicarboxylic acids and dihydroxy compounds · CPC title

• C08G63/183

  Terephthalic acids · CPC title