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. 07, 2003
Filed:
Jan. 04, 2002
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Abstract
A polycarbonate resin obtained by reaction of (A) a bisphenol compound having a fluorene structure and (B) a compound having a polysiloxane structure with hydroxyphenyl group or (A) a bisphenol compound having a fluorene structure, (B) a compound having a polysiloxane structure with hydroxyphenyl group and (C) other specific bisphenol compound with a carbonic acid ester-forming compound, wherein an amount of (B) bisphenol compound is 10 to 50% by weight to total amount of (A) a bisphenol compound having a fluorene structure, (B) a compound having a polysiloxane structure with hydroxyphenyl group and (C) other specific bisphenol compound and an intrinsic viscosity of said polycarbonate resin is 0.2 to 2.0 dl/g.