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:
Feb. 08, 2005
Filed:
Jul. 05, 2002
Kazuyuki Yamane, Fukushima, JP;
Yukichika Kawakami, Fukushima, JP;
Hiroyuki Sato, Fukushima, JP;
Tomohiro Hoshi, Fukushima, JP;
Kazuyuki Yamane, Fukushima, JP;
Yukichika Kawakami, Fukushima, JP;
Hiroyuki Sato, Fukushima, JP;
Tomohiro Hoshi, Fukushima, JP;
Kureha Chemical Industry Company, Limited, Tokyo, JP;
Abstract
The invention provides a polyester production process by bulk polymerization in a reactor, wherein the volume of the resulting polyester is shrunk for a release from the inner surface of the reactor, so that the polyester can be recovered in the form of a bulky mass. The invention also provides a reactor for bulk polymerization for polyester, which comprises an inner surface that enabling the resulting polyester to be released therefrom upon its volume shrinkage.