Abstract: To provide a polycarbonate resin composition having a high Abbe's number, high strength and excellent stainability. Disclosed is a polycarbonate resin composition prepared by blending a polycarbonate resin (A) prepared by forming carbonate bonds in tricyclo[5.2.1.02,6]decanedimethanol with a diester or phosgene, and a weight-averaged molecular weight (Mw) of the polycarbonate resin (A) being equal to or more than 25,000, and a polycarbonate resin (B) prepared by reacting 2,2-bis(4-hydroxyphenyl)propane and phosgene, and weight-averaged molecular weight (Mw) of the polycarbonate resin (B) being equal to or more than 30,000, wherein a ratio thereof, 100×(A)/((A)+(B)), is from 1 to 99% by weight.

Abstract: To provide a polycarbonate resin composition excellent in low-birefringence and strength. Disclosed is a polycarbonate resin composition prepared by blending a polycarbonate resin (A) prepared by forming carbonate bonds in a 95-5% by mole of dihydroxy compound represented by formula (1) and a 5-95% by mole of dihydroxy compound represented by formula (2) with a diester carbonate, and a polycarbonate resin (B) prepared by forming carbonate bonds in dihydroxy compound represented by formula (3) with a diester carbonate or phosgene in a 45-85% ratio by weight of (100×(A))/((A)+(B)). (in the formula, R1 and R2 represent a hydrogen atom or methyl respectively.

Abstract: To provide a polycarbonate resin composition having a high Abbe's number, high strength and excellent stainability. Disclosed is a polycarbonate resin composition prepared by blending a polycarbonate resin (A) prepared by forming carbonate bonds in tricyclo[5.2.1.02,6]decanedimethanol with a diester or phosgene, and a weight-averaged molecular weight (Mw) of the polycarbonate resin (A) being equal to or more than 25,000, and a polycarbonate resin (B) prepared by reacting 2,2-bis(4-hydroxyphenyl)propane and phosgene, and weight-averaged molecular weight (Mw) of the polycarbonate resin (B) being equal to or more than 30,000, wherein a ratio thereof, 100×(A)/((A)+(B)), is from 1 to 99% by weight.

Abstract: To provide a polycarbonate resin composition excellent in low-birefringence and strength. Disclosed is a polycarbonate resin composition prepared by blending a polycarbonate resin (A) prepared by forming carbonate bonds in a 95-5% by mole of dihydroxy compound represented by formula (1) and a 5-95% by mole of dihydroxy compound represented by formula (2) with a diester carbonate, and a polycarbonate resin (B) prepared by forming carbonate bonds in dihydroxy compound represented by formula (3) with a diester carbonate or phosgene in a 45-85% ratio by weight of (100×(A))/((A)+(B)). (in the formula, R1 and R2 represent a hydrogen atom or methyl respectively.

Abstract: To provide a thermoplastic polymer composition excellent in molding. Disclosed is a thermoplastic polymer composition comprising A) a polycarbonate copolymer which is produced according to a melt method without adding any quencher, which comprises constitution units of (1) and (2), B) a mold release which is a partial ester formed of a C10-20 monovalent fatty acid and glycerol, and C) a hindered phenol antioxidant.

Abstract: To provide a polycarbonate resin which is excellent in transparency, hue and ultraviolet-resistance of the molded product, is excellent in retention-stability at a high temperature, and causes sufficiently-reduced amount of the dirt on the metal mold during molding. A polycarbonate resin composition comprising A) a polycarbonate resin which is produced according to a melt method without adding any quencher, which comprises a constitution unit derived from 9,9-bis (4-(2-hydroxy ethoxy)phenyl)fluorene and a constitution unit derived from bisphenol A, B) a benzotriazole ultraviolet absorber, C) a mold release which is a partial ester formed of a C10-20 monovalent fatty acid and glycerol, and D) a hindered phenol antioxidant.

Abstract: The invention relates to a method for producing a thermoplastic resin, comprising using a composition at least comprising a fluorene-containing dihydroxy compound represented by the following formula (1) and a fluorene-containing hydroxy compound represented by the following formula (2) in an amount of from 0.5 parts by weight to 1.5 parts by weight relative to 100 parts by weight of the fluorene-containing dihydroxy compound of formula (1).

Abstract: The present invention relates to a polycarbonate resin composition which comprises a polycarbonate resin having the repeating unit that is represented by the following general formula (1) and a hydroxyl group at terminal thereof and has the concentration of the terminal hydroxyl group of 1000 ppm or more.

Abstract: The present invention relates to a polycarbonate resin composition which comprises a polycarbonate resin having the repeating unit that is represented by the following general formula (1) and a hydroxyl group at terminal thereof and has the concentration of the terminal hydroxyl group of 1000 ppm or more.

Abstract: The invention relates to a method for producing a thermoplastic resin, comprising using a composition at least comprising a fluorene-containing dihydroxy compound represented by the following formula (1) and a fluorene-containing hydroxy compound represented by the following formula (2) in an amount of from 0.5 parts by weight to 1.5 parts by weight relative to 100 parts by weight of the fluorene-containing dihydroxy compound of formula (1).