High-notched-impact core-shell polymers having improved weather resistance
US4393172A · kind A · utility
22Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1981 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Oct 8, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A particulate graft polymer comprising (a) a core formed by a crosslinked homopolymer of a conjugated diene or a copolymer thereof with up to 10% by weight of styrene or acrylonitrile; (b) a first shell formed by a crosslinked homopolymer of an acrylic acid alkyl ester or a copolymer thereof with up to 30% by weight of vinyl monomers; (c) a second shell formed by a polymer of resin-forming monomers, a process for manufacturing these graft polymers by means of a multi-stage emulsion polymerization, and their application as molding compositions, optionally together with rigid thermoplastic resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.