Polycarbonate resin composition for thin optical component, and thin optical component
AssigneeMitsubishi Engineering-Plastics Corporation
InventorKeisuke Tomita
Life of this patent
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Abstract
Provided are a polycarbonate resin composition for a thin optical component that has a high transmittance and a good hue, and a thin optical component. The polycarbonate resin composition for a thin optical component contains, per 100 mass parts of a polycarbonate resin (A), 0.1 to 4 mass parts of a polyalkylene glycol copolymer (B) having a linear alkylene ether unit (B1) given by general formula (I) and a branched alkylene ether unit (B2) selected from units given by general formulas (II-1) to (II-4), and 0.005 to 0.5 mass parts of a phosphorus stabilizer (C).
Claims20
A polycarbonate resin composition, the composition comprising:
- (A) 100 mass parts of a polycarbonate resin (A);
- (B) 0.1 to 4 mass parts of a polyalkylene glycol copolymer (B) having a linear alkylene ether unit (B1) given by general formula (I) below and a branched alkylene ether unit (B2) selected from the group consisting of units of formulas (II-2) to (II-4) below:
- (CH2)n—O (I)
- CR1R2—CR3R4—CR5R6—O (II-2)
- CR1R2—CR3R4—CR5R6—CR7R8—O (II-3)
- CR1R2—CR3R4—CR5R6—CR7R8—CR9R10—O (II-4)
- wherein:
- n is an integer from 3 to 6;
- R1 to R10 independently represent a hydrogen atom or an alkyl group having 1 to 3 carbons;
- and
- in each of formulas (II-2) to (II-4), at least one of R1 to R10 is an alkyl group having 1 to 3 carbons;
- (C) 0.005 to 0.5 mass parts of a phosphorus stabilizer (C);
- and
- (D) 0.0005 to 0.2 mass parts per 100 mass parts of an epoxy compound (D) per the 100 mass parts of the polycarbonate resin (A).
Dependencies are inferred from the claim text.