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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.:

US 9371445 B1

PDFFull Text
Date of Patent:
Jun. 21, 2016

Filed:

Mar. 29, 2013

Biodegradable polyester resin composition

Applicant:

Kaneka Corporation, Osaka-shi, Osaka, JP;

Inventors:

Noriyuki Suzuki, Settsu, JP;

Nobuo Nakamura, Settsu, JP;

Assignee:

Kaneka Corporation, Osaka, JP;

Attorney:

Polsinelli PC

Primary Examiner:

Susannah Chung

Assistant Examiner:

Robert T Butcher

Int. Cl.
CPC ...
C08G 63/60 (2006.01); C08K 5/10 (2006.01); C08K 5/103 (2006.01); C08L 67/02 (2006.01); C08J 5/18 (2006.01); C08L 67/04 (2006.01); C08L 101/16 (2006.01);
U.S. Cl.
CPC ...
C08L 67/02 (2013.01); C08J 5/18 (2013.01); C08L 67/04 (2013.01); C08J 2300/16 (2013.01); C08J 2367/02 (2013.01); C08J 2367/04 (2013.01); C08J 2467/02 (2013.01); C08J 2467/04 (2013.01); C08K 5/103 (2013.01); C08L 101/16 (2013.01);
Abstract

This invention aims at improving the tear strength of a film and a sheet molded from a resin composition containing microorganism-produced aliphatic polyester. This invention relates to a biodegradable polyester resin composition containing polybutylene adipate terephthalate (PBAT) in the proportion of 60 to 400 parts by weight and modified-glycerin in the proportion of 10 to 50 parts by weight based on 100 parts by weight of aliphatic polyester (P3HA) having a repeating unit represented by Formula (1): [—CHR—CH—CO—O—] (wherein R is an alkyl group represented by CHand n is an integer of 1 or more and 15 or lower) and a film or a sheet obtained by molding the biodegradable polyester resin composition in which the maximum major axis of phases containing the aliphatic polyester (P3HA) measured by a transmission electron microscopy analysis-image analysis method (TEM method) is 18 μm or lower and the average value is 8 μm or lower.

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