Idemitsu Kosan Company, Limited

Takafumi Akimoto

Yasuhiro Ishikawa

Tomoko Abe

Shinobu Yamao

Minoru Yabukami

Masami Sawai

Provided is a polycarbonate-polyorganosiloxane copolymer, including: a polyorganosiloxane block (A-1) including a specific structural unit; and a polycarbonate block (A-2) formed of a specific repeating unit, wherein the polycarbonate-polyorganosiloxane copolymer satisfies the following condition (A) or (B): condition (A): a hexane extraction amount of the polycarbonate-polyorganosiloxane copolymer is 150 ppm or less; and condition (B): average weights of polyorganosiloxane blocks in polycarbonate-polyorganosiloxane copolymers obtained by separating the polycarbonate-polyorganosiloxane copolymer with a gel permeation chromatograph satisfy a specific expression.

Polycarbonate/polyorganosiloxane copolymer and resin composition including said copolymer

Provided is a polycarbonate-polyorganosiloxane copolymer including polycarbonate blocks (A-1) each formed of a specific repeating unit and polyorganosiloxane blocks (A-2) each containing a specific repeating unit, wherein the polycarbonate-polyorganosiloxane copolymer satisfies the following expression (F1a):15&#x2264;1&#x2003;&#x2003;(F1a)wherein wM1 represents the average content of the polyorganosiloxane blocks (A-2) in polycarbonate-polyorganosiloxane copolymers each having a molecular weight determined by using a polycarbonate as a conversion reference of from 56,000 or more to 200,000 or less among polycarbonate-polyorganosiloxane copolymers obtained through the separation of the polycarbonate-polyorganosiloxane copolymer by gel permeation chromatography.

Polycarbonate-polyorganosiloxane copolymer, polycarbonate resin composition including same, and molded product thereof

Polycarbonate-polyorganosiloxane copolymer, flame-retardant polycarbonate resin composition including same, and molded product thereof

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Chiba, Japan

Takafumi Akimoto