Method for producing oxymethylene copolymer resin composition, and oxymethylene copolymer resin composition
US11820857B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2021 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Aug 6, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L59/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a method for producing an oxymethylene copolymer resin composition, comprising: adding to an oxymethylene copolymer (A), an Mn micromole of an amine-substituted triazine compound (B) per gram of the oxymethylene copolymer (A), an Mc micromole of a choline hydroxide (C) per gram of the oxymethylene copolymer (A), and 0.05 to 1.1 parts by weight of an antioxidant (D) with respect to 100 parts by weight of the oxymethylene copolymer (A), and melt kneading a mixture of the oxymethylene copolymer (A), amine-substituted triazine compound (B), the choline hydroxide (C), and the antioxidant (D), wherein Mn (μmol/g-POM) and Mc (μmol/g-POM) satisfy: 6.5<(Mn+Mc×8)<25, 0.5<Mn<7.0, and 0.0<Mc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.