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:
Oct. 04, 2011
Filed:
Jan. 23, 2008
Gaku Maruyama, Tsuruga, JP;
Kenta Susuki, Tsuruga, JP;
Katsuaki Kuze, Ohtsu, JP;
Shigeo Ukyo, Ohtsu, JP;
Shoji Koketsu, Iwakuni, JP;
Gaku Maruyama, Tsuruga, JP;
Kenta Susuki, Tsuruga, JP;
Katsuaki Kuze, Ohtsu, JP;
Shigeo Ukyo, Ohtsu, JP;
Shoji Koketsu, Iwakuni, JP;
Toyo Boseki Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Abstract
The present invention is a process for producing a polyester-polycarbonate type thermoplastic polyester elastomer in which a hard segment consisting of a polyester constructed of aromatic dicarboxylic acid, and an aliphatic or alicyclic diol, and a soft segment consisting mainly of aliphatic polycarbonate are connected, comprising at least a step of increasing the molecular weight of an aliphatic polycarbonate diol by a reaction of an aliphatic polycarbonate diol and a chain extender, and a step of reacting aliphatic polycarbonate and a polyester constructed of aromatic dicarboxylic acid and an aliphatic or alicyclic diol in the molten state.