Title:
POLYESTER RESIN, PRODUCTION THEREOF, PAINT, AND ADHESIVE
Document Type and Number:
Japanese Patent JP3424857
Kind Code:
B2
Abstract:
PURPOSE: To obtain a polyester resin which is excellent in adhesion to a polyester film, etc., and in strength and water resistance and is useful in a paint or an adhesive.
CONSTITUTION: The process comprises depolymerizing 100 pts.wt. linear polyester resin having a number-average mol.wt. of 6,000 or higher and synthesized from an acid component comprising an aromatic dicarboxylic acid and/or an aliphatic dicarboxylic acid and an alcohol component comprising a dihydric alcohol with 0.2-10 pts.wt. hydroxycarboxylic acid having three or more hydroxy and carboxyl groups, and polycondensing the resulting branches polyester resin under a reduced pressure to heighten the weight-average mol.wt. to 20,000 or higher.
Inventors:
Yasushi Kojima
Masaya Ohkawa
Masaya Ohkawa
Application Number:
JP20852994A
Publication Date:
July 07, 2003
Filing Date:
September 01, 1994
Export Citation:
Assignee:
Hitachi Chemical Co., Ltd.
International Classes:
C08G63/78; C08G63/91; C09D167/00; C09D167/02; C09J167/00; C09J167/02; (IPC1-7): C08G63/78; C09D167/02
Domestic Patent References:
| JP5171106A |