Composition based on an ethylene-vinyl alcohol copolymer and its use
US6451911B1 · kind B1 · utility
4Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L87/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a composition based on an ethylene-vinyl alcohol copolymer comprising:50 to 98% by weight of an EVOH copolymer1 to 50% by weight of a polyethylene (A)1 to 15% by weight of a polymer (B) resulting from the reaction (i) of a copolymer (B1) of ethylene and of an unsaturated monomer X grafted or copolymerized with (ii) a polyamide (B2). It also relates to a multilayer structure comprising a layer consisting of this composition. This structure is useful for making packaging. The composition of the invention also adheres well to PET, this property being useful in coinjection to make bioriented preforms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.