Polycarbonate-polydiorganosiloxane copolymer

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United States of America Patent

PATENT NO 8962780
APP PUB NO 20120271009A1
SERIAL NO

13386051

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Abstract

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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%.

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Patent Owner(s)

Patent OwnerAddress
TEIJIN CHEMICALS LTD2-1 KASUMIGASEKI 3-CHOME CHIYODA-KU TOKYO 100-0013

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Higaki, Yuji Chiyoda-ku, JP 9 203
Kondo, Fumitaka Chiyoda-ku, JP 37 256
Yamanaka, Katsuhiro Chiyoda-ku, JP 54 619

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