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:
Jan. 29, 2008
Filed:
Dec. 02, 2005
Hitoshi Nimura, Yokkaichi, JP;
Motohiro Munakata, Yokkaichi, JP;
Toru Mori, Tokyo, JP;
Toshio Akai, Yokohama, JP;
Hitoshi Nimura, Yokkaichi, JP;
Motohiro Munakata, Yokkaichi, JP;
Toru Mori, Tokyo, JP;
Toshio Akai, Yokohama, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
To provide a catalyst for production of a polyester, a process for producing a polyester using the catalyst and a titanium-containing polyethylene terephthalate having excellent characteristics. A catalyst for production of a polyester, characterized by comprising at least (1) a Group 4A compound (hereinafter referred to as compound (1)), (2) a compound of at least one element selected from the group consisting of magnesium, calcium and zinc (hereinafter referred to as compound (2)) and an oxygen-containing organic solvent. A process for producing a polyester using this catalyst. A titanium-containing polyethylene terephthalate, having characteristics represented by the following (A), (B) and (C):