Polymer composition and preparation method
US4598128A · kind A · utility
39Cited by
12References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1983 |
| Grant date | Jul 1, 1986 |
| Priority date | — |
| Expiry date | Mar 14, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/07
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ethylene polymer composition is provided, the composition being a blend of a first ethylene polymer and a second ethylene polymer, the second ethylene polymer characterized by molecules having long chain Y-branches. The blend can be prepared by an extrusion process in which a portion of the polyethylene fed to the process is irradiated and the irradiated and non-irradiated polymers are blended by melt extrusion. The blends exhibit high flow activation energies and good blow-molding properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.