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:
Apr. 24, 2007
Filed:
Aug. 24, 2000
Takahiro Nakajima, Ohtsu, JP;
Ken-ichi Tsukamoto, Ohtsu, JP;
Shoichi Gyobu, Ohtsu, JP;
Mitsuyoshi Kuwata, Ohtsu, JP;
Takahiro Nakajima, Ohtsu, JP;
Ken-ichi Tsukamoto, Ohtsu, JP;
Shoichi Gyobu, Ohtsu, JP;
Mitsuyoshi Kuwata, Ohtsu, JP;
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Abstract
This invention provides a novel polycondensation catalyst using no antimony compound, polyester produced by using the same, and a process for producing polyester. A novel catalyst comprising an aluminum compound and a phosphorus compound is used as the polycondensation catalyst in producing polyester. The polyester of this invention can be applied to fibers for clothes, fibers for industrial materials, various films, sheets and molded articles such as bottles and engineering plastics, as well as coatings and adhesives.