Composition based on polyolefins and on ethylene-vinyl acetate copolymer
US6258862A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1997 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Jun 25, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition including, by weight: PA1 from 40 to 80% of at least one uncrosslinked composition (A) including at least one polyolefin (PA); PA1 from 60 to 20% of at least one crosslinked composition (B) including at least one propylene polymer (PB) and at least one ethylene-vinyl acetate (EVA) copolymer. The composition B has preferably been obtained beforehand by processing a composition including from 10 to 49% of at least one propylene polymer (PB), from 90 to 51% by weight of at least one ethylene-vinyl acetate copolymer, and from 100 to 1500 ppm by weight of at least one crosslinking agent. This composition makes it possible especially to manufacture foam sheets which can be employed in the motor vehicle industry, which are thermoformable, HF weldable and recyclable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.