Ethylene-.alpha.-olefin copolymer and process for producing the same
US5082908A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1989 |
| Grant date | Jan 21, 1992 |
| Priority date | — |
| Expiry date | Jun 8, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ethylene-.alpha.-olefin copolymer is disclosed, which comprises ethylene and an .alpha.-olefin having from 3 to 10 carbon atoms, has an ethylene/.alpha.-olefin molar ratio of from 88/12 to 98/2, and which has a number average molecular weight of from 35,000 to 80,000 and a weight average molecular weight/number average molecular weight ratio of from 1.8/1 to 3.0/1 as determined by gel permeation chromatography. A process for producing the ethylene-.alpha.-olefin copolymer is also disclosed. The ethylene-.alpha.-olefin copolymer exhibits excellent transparency and excellent low-temperature heat-sealing properties. The process is advantageous from the standpoint of equipment, energy and cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.