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. 24, 2015
Filed:
Jul. 28, 2010
Applicants:
Yuji Higaki, Chiyoda-ku, JP;
Katsuhiro Yamanaka, Chiyoda-ku, JP;
Fumitaka Kondo, Chiyoda-ku, JP;
Inventors:
Assignee:
Teijin Chemicals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 64/18 (2006.01); C08G 77/448 (2006.01); C08L 69/00 (2006.01); C08L 83/10 (2006.01);
U.S. Cl.
CPC ...
C08G 64/186 (2013.01); C08L 69/00 (2013.01); C08L 83/10 (2013.01); C08G 77/448 (2013.01);
Abstract
It is an object of the present invention to provide a polycarbonate-polydiorganosiloxane copolymer having improved transparency. The present invention is the polycarbonate-polydiorganosiloxane copolymer comprises a polycarbonate block and a polydiorganosiloxane block, wherein (i) the copolymer has an aggregation structure comprising a matrix of the polycarbonate and polydiorganosiloxane domains dispersed therein; (ii) the polydiorganosiloxane domains have an average size of 5 to 40 nm and a normalized dispersity of not more than 30%; and (iii) the total light transmittance is not less than 88%.