Search International and National Patent Collections
|1. (WO2015045633) CRYSTALLINE COPOLYESTER, POLYESTER RESIN AQUEOUS DISPERSION, AND HEAT SEALING AGENT USING SAME|
|Applicants:||TOYOBO CO., LTD.
|Title:||CRYSTALLINE COPOLYESTER, POLYESTER RESIN AQUEOUS DISPERSION, AND HEAT SEALING AGENT USING SAME|
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.