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).
Claims14
A polycarbonate resin composition for a thin optical component, 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-1) to (II-4) below,
- (CH2)n—O (I)
- CR1R2—CR3R4—O (II-1)
- CR1R2—CR3R4—CR5R6—O (II-2)
- CR1R2—CR3R4—CR5R6—CR7R8—O (II-3)
- CR1R2—CR3R4—CR5R6—CR7R8—CR9R10—O (II-4);
- and
- (C) 0.005 to 0.5 mass parts of a phosphorus stabilizer (C),
- 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-1) to (II-4), at least one of 10 to R′° is an alkyl group having 1 to 3 carbons).
Dependencies are inferred from the claim text.