Ethylene-polymer-based composition, process for obtaining and using same
US6103807A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1998 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Mar 19, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ethylene-polymer-based composition obtained by mixing, in the melt: 100 parts by weight of an ethylene polymer with PA1 from 0.0005 to 0.1 part by weight of a compound (a) with the ability to generate free radicals and PA1 from 0.0005 to 0.1 part by weight of coagent (b) chosen from among the C.sub.3 to C.sub.12 alkenes and the C.sub.5 to C.sub.16 alkadienes. This composition has clearly improved melt strength. It is very suitable for extrusion and rotational molding and in particular for the extrusion of tubes intended for conveying fluids under pressure. The invention also relates to a process for obtaining the composition and using it for the manufacture of shaped articles, and to shaped articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.