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. 13, 2021
Filed:
May. 24, 2016
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Aki Yamada, Sodegaura, JP;
Yasuhiro Ishikawa, Ichihara, JP;
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Abstract
Provided is a polycarbonate-based resin composition, including 0.001 part by mass to 1 part by mass of a flame retardant (C) with respect to 100 parts by mass of a polycarbonate-based resin containing a polycarbonate-polyorganosiloxane copolymer (E-1), in which: the polycarbonate-polyorganosiloxane copolymer (E-1) has a polycarbonate block (A) formed of a repeating unit represented by the following general formula (I) and a polyorganosiloxane block (B) containing a repeating unit represented by the following general formula (II); and in a differential molecular weight distribution curve obtained from measurement of the polyorganosiloxane block (B) by gel permeation chromatography using the polystyrene calibration curve, the curve having the axis of abscissa indicating a logarithmic value log(M) of a molecular weight M and the axis of ordinate indicating dw/d log(M) obtained by differentiating a concentration fraction w with respect to the logarithmic value log(M) of the molecular weight, (1) a dw/d log(M) value becomes maximum in the range of 3.4≤log(M)≤4.0, and (2) a ratio of a value obtained by integrating the dw/d log(M) value over the range of 4.00≤log(M)≤4.50 to a value obtained by integrating the dw/d log(M) value over the entire range of the log(M) in the differential molecular weight distribution curve is 6 to 40%.