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. 22, 2019
Filed:
Dec. 04, 2014
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Genomatica, Inc., San Diego, CA (US);
Masaru Utsunomiya, Tokyo, JP;
Yusuke Izawa, Mie, JP;
Norikazu Konishi, Mie, JP;
Kota Tanaka, Mie, JP;
Shinichiro Matsuzono, Mie, JP;
Takayuki Suzuki, Mie, JP;
Michael Japs, San Diego, CA (US);
Mark Burk, San Diego, CA (US);
Warren Clark, Lake Jackson, TX (US);
MITSUBISHI CHEMICAL CORPORATION, Chiyoda-ku, JP;
Genomatica, Inc., San Diego, CA (US);
Abstract
At the time of producing a polyester by using a dicarboxylic acid component and a biomass-resource-derived diol as raw materials, a polyester is efficiently produced with good color tone, as the raw material diol derived from biomass resources, a diol in which the content of a cyclic carbonyl compound having a carbon atom number of 5 or 6 is from 0.01 to 12 ppm by mass, is used, and by controlling the content of a cyclic carbonyl compound having a carbon atom number of 5 or 6 in the raw material diol to fall in a prescribed range, the color tone of the polyester is improved.