Method of preparing graft copolymer, graft copolymer, and thermoplastic resin molded article
US11261277B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2018 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Mar 25, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2800/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are a method of preparing a graft copolymer, a graft copolymer, and a thermoplastic resin molded article. The method of preparing a graft copolymer includes 1) adding a conjugated diene-based monomer and performing polymerization to prepare a conjugated diene-based polymer; and 2) adding the conjugated diene-based polymer, an aromatic vinyl monomer, and a vinyl cyan monomer and performing polymerization to prepare a graft copolymer, wherein an emulsifier having an APHA color value of 50 or less and a critical micelle concentration of 1 to 50 g/l is added, so that excellent polymerization stability, colorability, light resistance, and surface clarity are exhibited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.