Stabilized polyethylene resins and method of stabilization
US5096955A · kind A · utility
4Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1991 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Jan 14, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/098
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel process is disclosed for stabilizing polyethylene resins having pendant vinyl and/or vinylidene groups against changes in viscosity under melt process conditions. The process comprises adding a viscosity-stabilizing amount of transition metal or transition metal salt to the polyethylene resin prior to or during melt processing operations. The resulting polymer composition are melt-stabilized, crosslink-resistant, substantially gel-free polymer compositions having many uses. The novel compositions are prepared free of metal deactivators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.