Polymethylmethacrylate resin with an impact modifier capsulated therein and a process of preparing for the same
US6319966A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2000 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Jun 1, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F285/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A PMMA resin containing an impact modifier capsulated therein, said impact modifier comprising a core of a glass polymer, an intermediate layer of a rubber copolymer grafted to the core and an outer layer of a glass polymer grafted to the intermediate layer, the impact modified PMMA resin having a granular shape, the amount of the core being 5 to 20 weight %, the amount of the intermediate layer being 10 to 70 weight % and the amount of the outer layer being 25 to 85 weight %, the intermediate of the rubber copolymer being a copolymer of at least one monomer selected from the group consisting of butylacrylate and butadiene and a monomer of styrene, the outer layer of a glass polymer containing a chain transfer agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.