Opaque high-impact methyl methacrylate-butadiene-styrene polymer for improving impact resistance of polyvinyl chloride and preparation method thereof
US11479659B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2019 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Oct 9, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/53
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An opaque high-impact methyl methacrylate-butadiene-styrene polymer (MBS) for improving impact resistance of polyvinyl chloride (PVC) including the following components by mass: 80-95% of core layer, 4-20% of shell layer and 0.001-0.05% of protective colloid, where the core layer is a butadiene (B) and styrene (S) polymer, the shell layer is one or a copolymer of two or three of S, acrylate and methyl methacrylate (MMA), and the protective colloid includes one or a compound of two or three of polyvinyl alcohol (PVA), gelatin and hydroxypropylmethyl cellulose (HPMC), may solve the problems of low impact resistance in the existing MBS product and difficult coagulation or spraying in the post-treatment process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.