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1. (WO2015045633) CRYSTALLINE COPOLYESTER, POLYESTER RESIN AQUEOUS DISPERSION, AND HEAT SEALING AGENT USING SAME

Pub. No.:    WO/2015/045633    International Application No.:    PCT/JP2014/070697
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Thu Aug 07 01:59:59 CEST 2014
IPC: C08G 63/12
B32B 27/36
C08L 67/02
Applicants: TOYOBO CO., LTD.
東洋紡株式会社
Inventors: HATTORI, Takahiro
服部 貴洋
SUGYO, Yasunobu
須堯 泰伸
TANIGAWA, Masahito
谷川 雅人
Title: CRYSTALLINE COPOLYESTER, POLYESTER RESIN AQUEOUS DISPERSION, AND HEAT SEALING AGENT USING SAME
Abstract:
Provided is a heat sealing agent that is useful as a food packaging material and an industrial component packaging material. Also provided are a crystalline copolyester resin and a polyester resin aqueous dispersion that exhibit excellent water resistance properties and boiling water resistance properties, said properties being particularly problematic. The crystalline copolyester resin (A) has a melting point of 90-130 °C and comprises: a polycarboxylic acid component and a polyalcohol component as a copolymer component; 25 mol% or less of an ethylene glycol component as the polyalcohol component; and 75 mol% or more of a linear aliphatic diol component having 4-10 carbon atoms.