Compositions based on random propylene copolymers, process for their manufacture, and heat-sealable multilayer sheets comprising them
US7015287B2 · kind B2 · utility
3Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2002 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Jul 18, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Compositions based on propylene polymers (compositions (C)) comprising: a) from 61 to 74% by weight of a random propylene copolymer (copolymer (A)) comprising from 8 to 16% by weight of monomer units derived from 1-butene and less than 0.5% by weight of monomer units derived from ethylene, and b) from 39 to 26% by weight of a random propylene copolymer (copolymer (B)) comprising from 35 to 50% by weight of monomer units derived from 1-butene and from 0 to 1% by weight of monomer units derived from ethylene. Process for the manufacture of these compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.