Method for preparing copolymer and copolymer
US11155660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2018 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Oct 1, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/011
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing a copolymer, comprising adding a surface-modified silica nanopowder, a vinyl cyan-based monomer, and an aromatic vinyl-based monomer and polymerizing the same, wherein the surface-modified silica nanopowder is a silica nanopowder which are surface-modified with a chain transfer agent for reversible addition-fragmentation chain transfer polymerization; a copolymer prepared according to the method; and a thermoplastic resin-molded article manufactured using the copolymer. More particularly, the present invention relates to a method for preparing a copolymer having improved heat shrinkage and reflection haze; a copolymer; and a thermoplastic resin-molded article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.