Title:
COPOLYMERIZED POLYESTER AND METAL PRIMER COATING MATERIAL USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/047197
Kind Code:
A1
Abstract:
To provide a copolymerized polyester which is effective as a binder component for a metal primer coating material for coil coating. Additionally, to provide a metal primer coating material which has a coating material composition using the copolymerized polyester, and which has excellent surface hardness, bendability, corrosion resistance and chemical resistance.
A copolymerized polyester (A) which has, as copolymerization components, a polyvalent carboxylic acid component and a polyhydric alcohol component, and wherein: if the total polyvalent carboxylic acid component is taken as 100% by mole, an aromatic dicarboxylic acid component is contained in an amount of 95-100% by mole and an aliphatic dicarboxylic acid component is contained in an amount of 0-5% by mole; and if the total polyhydric alcohol component is taken as 100% by mole, a glycol component having a specific structure is contained in an amount of 1-30% by mole. This copolymerized polyester (A) has a glass transition temperature within the range of 25-50°C.
Inventors:
IWASHITA YUJI (JP)
Application Number:
PCT/JP2016/069141
Publication Date:
March 23, 2017
Filing Date:
June 28, 2016
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
C08G63/668; C09D5/00; C09D167/02
Foreign References:
| JP2015160875A | 2015-09-07 | |||
| JP2011184642A | 2011-09-22 | |||
| JP2010235647A | 2010-10-21 | |||
| JP2004339446A | 2004-12-02 |
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