Method for preparing a vinyl polymer-polyolefine composite
US5300578A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1993 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Jan 27, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F255/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for preparing a polyolefine--vinyl polymer composite, wherein about 10-200 parts by weight of vinyl monomer and about 0.01-4.0 parts by weight of a free radical polymerization initiator, based on 100 parts by weight of vinyl monomer, are impregnated in 100 parts of weight of polyolefine particles by slowly mixing these at a temperature of about 20.degree.-130.degree. C. while maintaining the particle structure of the polyolefine. After 50-99% of the amount of the monomer has been absorbed into the polyolefine particles, a water suspension is prepared by adding to the above-mentioned mixture about 80-1000 parts by weight water, based on 100 parts of weight of polyolefine+vinyl monomer, as well as a stabilizing agent. The temperature of the water suspension is then increased for polymerizing the vinyl monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.