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1. (WO2018179707) CARBOXYLIC ACID GROUP-CONTAINING POLYESTER ADHESIVE COMPOSITION

Pub. No.:    WO/2018/179707    International Application No.:    PCT/JP2018/001765
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Tue Jan 23 00:59:59 CET 2018
IPC: C09J 167/00
C09J 7/00
C09J 163/00
H05K 1/03
Applicants: TOYOBO CO., LTD.
東洋紡株式会社
Inventors: SONODA, Ryo
薗田 遼
ITO, Takeshi
伊藤 武
Title: CARBOXYLIC ACID GROUP-CONTAINING POLYESTER ADHESIVE COMPOSITION
Abstract:
The purpose of the present invention is to provide a carboxylic acid group-containing polyester adhesive composition having an excellent sheet life and having sufficiently high wet heat resistance to withstand lead-free soldering under high humidity conditions while retaining good adhesion to various plastic films, metals (e.g., copper, aluminum, stainless steel) and glass epoxies. This adhesive composition comprises a carboxylic acid group-containing polyester resin (A) and a compound (B) having two or more glycidyl groups in each molecule, and is characterized in that the carboxylic acid group-containing polyester resin (A) has a glass transition temperature (Tg) of 40-90ºC and an acid value of 1-30 mgKOH, and contains, as copolymerization components, a polymer polyol (A1), a polymer polyol (A2) that is different from the polymer polyol (A1), and a tetracarboxylic dianhydride.