The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2015
Filed:
Sep. 14, 2012
Toyomasa Hoshino, Mie, JP;
Shinichiro Matsuzono, Mie, JP;
Hiroyuki Kaneko, Mie, JP;
Toshiyuki Hamano, Mie, JP;
Takayuki Aoshima, Mie, JP;
Tadashi Ueda, Mie, JP;
Toyomasa Hoshino, Mie, JP;
Shinichiro Matsuzono, Mie, JP;
Hiroyuki Kaneko, Mie, JP;
Toshiyuki Hamano, Mie, JP;
Takayuki Aoshima, Mie, JP;
Tadashi Ueda, Mie, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A method of producing an aliphatic polyester resin by continuously esterifying and melt polycondensing an aliphatic dicarboxylic acid and an aliphatic diol; and at least one aliphatic hydroxycarboxylic acid; and at least one of an aliphatic unsaturated dicarboxylic acid and cis- and trans-isomers of aliphatic unsaturated tricarboxylic acids, wherein the total amount of the at least one aliphatic hydroxycarboxylic acid and the at least one of aliphatic unsaturated dicarboxylic acid and cis- and trans-isomers of aliphatic unsaturated tricarboxylic acids is from 0.0010 to 0.50 mol % of the total amount of the aliphatic polyester resin; and the total amount of the at least one aliphatic hydroxycarboxylic acid is from 1.0 to 7.0 in terms of a molar ratio to the total amount of the at least one of aliphatic unsaturated dicarboxylic acid and cis- and trans-isomers of aliphatic unsaturated tricarboxylic acids.