Modifier for polycarbonate and method for producing same
US10723826B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Mar 22, 2018 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Mar 22, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a modifier for polycarbonate, comprising: a graft polymer (A) having 30 to 80 parts by mass of a main chain composed of an ethylene-based polymer (a) and 70 to 20 parts by mass of a graft chain composed of a structural unit derived from a vinyl-based monomer (b), with a total amount of the main chain and the graft chain of 100 parts by mass; and a graft polymer (B) prepared by graft polymerization of a vinyl-based monomer to a rubbery polymer, at a mass ratio (A):(B)=9 to 98:91 to 2, wherein the vinyl-based monomer (b) comprises a specific aromatic vinyl monomer and vinyl cyanide monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.