Partially cross-linked elastomeric polyolefin mixtures
US6448335B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Mar 22, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2308/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Mixtures of C2-C10 olefin polymers functionalized with carboxylic acids which are neutralized from 1 to 100% with metallic ions The mixtures comprise (by weight): (1) 100 parts of a heterophasic polyolefin composition comprising crystalline polypropylene and an elastomeric fraction of an ethylene/propylene or superior ethylene/&agr;-olefin copolymer where the ethylene content is less than 40%; and (II) 0-250 parts of an elastomeric polymer selected from: a) ethylene/C3-C10 &agr;-olefin copolymers containing at least 20% of a C3-C10 &agr;-olefin; b) ethylene/methyl acrylate copolymers containing from 15 to 30% of recurrent units of methyl acrylate, and having a MFR ranging from 1 to 10 g/10 min; and c) polyisobutylenes; d) atactic propylene homopolymers and amorphous ethylene/C3-C10 &agr;-olefins copolymers produced with metallocenic catalysts; and e) styrene block copolymers containing butadiene and isoprene as comonomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.