Patent ID: 11865815
Assignee: KURARAY CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A resin composition consisting of:
polymethallyl alcohol (A) consisting of a repeating structural unit represented by formula (1) in an amount of greater than or equal to 70 mol % to 100 mol %, and optionally another structural unit derived from (meth)acrylic acid ester, allyl alcohol, or styrene:, , and
a component (B) that is at least one selected from the group consisting of acetic acid, butyric acid, propionic acid, citric acid, tartaric acid, lactic acid, phosphonic acid, and phosphoric acid,
wherein a content of the component (B) is greater than or equal to 0.01 μmol and lower than or equal to 34.5 μmol per 1 g of the polymethallyl alcohol (A),
the resin composition optionally includes a component (C) that is an alkali metal ion and/or an alkaline earth metal ion, wherein if the resin composition includes the component (C), then a content of the component (C) is 0.05 to 45 μmol per 1 g of the polymethallyl alcohol (A),
the resin composition optionally includes at least one additive (D) selected from the group consisting of an ultraviolet absorber, a plasticizer, an antistatic agent, a non-metal-containing thermal stabilizer, a lubricant, a coloring agent, and a solvent, and
wherein a ratio MFR15/MFR3 is from 0.3 to less than 1.7, wherein MFR3 is a weight of the resin composition discharged for 1 minute when the resin composition is held in a melt indexer at a temperature of 210° C. and a load of 2160 g for 3 minutes, and MFR15 is a weight of the resin composition discharged for 1 minute when the resin composition is held in the melt indexer at a temperature of 210° C. and a load of 2160 g for 15 minutes.