Composite acrylic resin particles
US4833208A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Apr 20, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F265/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Composite acrylic resin particles prepared by effecting an emulsion polymerization of a monomer mixture of PA0 (A) at least one crosslinking monomer having in its molecule two or more radically polymerizable mono- or 1,1-di-substituted ethylenic unsaturation bonds, or a combination of at least two monomers each having a mutually reactive functional group and one or more radically polymerizable mono- or 1,1-di-substituted ethylenic unsaturation bonds, PA0 (B) at least one mono-functional polymerizable monomer other than an aromatic compound, and PA0 (C) at least one monomer having in its molecule one or more radically polymerizable mono- or 1,1-di-substituted ethylenic unsaturation bonds and one or more radically polymerizable 1,2-di-, 1,1,2-tri- or 1,1,2,2-tetra-substituted ethylenic unsaturation bonds, and graft-polymerizing thus obtained particles with a polymerizable aromatic compound and other optional mono-functional monomers. The present acrylic resin particles are characterized in that a number of substantially linear acrylic polymer chains are chemically bonded to the particulate crosslinked acrylic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.