Ethylene copolymers
US4205021A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1978 |
| Grant date | May 27, 1980 |
| Priority date | — |
| Expiry date | Jan 18, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolymer consisting essentially of ethylene and an .alpha.-olefin with 5 to 18 carbon atoms, said copolymer having PA0 (i) a density of 0.90 to 0.94 g/cm.sup.3, PA0 (ii) an intrinsic viscosity [.eta.] of 0.8 to 4.0 dl/g, PA0 (iii) a maximum melting point, determined by differential thermal analysis, of 115.degree. to 130.degree. C., and PA0 (iv) a g.sub..eta. *(=[.eta.]/[.eta.].sub.l) value of 0.05 to 0.78, in which formula [.eta.] is the intrinsic viscosity of the copolymer and [.eta.].sub.l is the intrinsic viscosity of a linear polyethylene having the same weight average molecular weight determined by the light scattering method as said copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.