Resin molded body and resin molded body production method
AssigneeMitsubishi Chemical Corporation
InventorsYujiro Hamada, Yudai Motomatsu, Masahiko Ono
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Abstract
Provided is a resin molded product having excellent scratch resistance. The resin molded product of the present invention is a resin molded product including a methacrylic-based resin composition, in which the methacrylic-based resin composition contains a (meth)acrylic-based polymer (A) and a fatty acid compound (B), and an absorbance ratio P1/P2 of a peak absorbance P1 in a wave number range of 1630 to 1650 cm−1 to a peak absorbance P2 in a wave number range of 1710 to 1730 cm−1 on a surface of the resin molded product, measured by a single reflection ATR surface reflection method with an infrared spectrophotometer, is 0.0040 or more.
Claims12
A method of producing a resin molded product, comprising:
- performing injection molding on a methacrylic-based resin composition containing a (meth)acrylic-based polymer (A) and a saturated fatty acid amide compound (B) containing stearic acid amide and palmitic acid amide as main components,
- wherein the content ratio of the fatty acid compound (B) included in the methacrylic-based resin composition is 1.49% by mass or more and 10% by mass or less with respect to 100% by mass of the total mass of the methacrylic-based resin composition,
- wherein in the injection molding, the (meth)acrylic-based resin composition is injected from an injection molding machine with a cylinder temperature of 270° C. or higher and 300° C. or lower into a metal mold, and
- wherein the resin molded product has an absorbance ratio P1/P2 of a peak absorbance P1 in a wave number range of 1630 to 1650 cm−1 to a peak absorbance P2 in a wave number range of 1710 to 1730 cm−1 on a surface of the resin molded product, measured by a single reflection ATR surface reflection method with an infrared spectrophotometer, of 0.0066 or more.
Dependencies are inferred from the claim text.