Graft copolymers of polyolefins and a method of producing same
US5411994A · kind A · utility
72Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1992 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Nov 6, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F255/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are graft copolymers of polyolefins and a method of preparing said graft copolymers. The method comprises irradiating a mass of olefin polymer particles and thereafter treating the mass of particles with a vinyl monomer in liquid form. A nonoxidizing environment is maintained throughout the process while free radicals produced in the olefin polymer by the irradiation are present, thereby preventing degradation of the polymer. In a final step, residual free radicals are deactivated, and any unreacted monomer is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.