Coextrusion binder of co-grafted polyethylene and polypropylene diluted in a non-grafted polyethylene
US8007919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2006 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Aug 18, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention concerns a coextrusion binder comprising a mixture of at least one ethylene homo- or copolymer (A1) of density ranging between 0.940 and 0.980 g/cm3 with at least one propylene homo- or copolymer (B), said mixture being grafted by at least one functional monomer and optionally diluted in at least one non-grafted ethylene homo- or copolymer (A2) of density ranging between 0.940 and 0.980 g/cm3; the grafting rate of said coextrusion binder being less than 0.5% wt. % based on the total weight of said binder; the density of said tie ranging between 0.940 and 0.980 g/cm3. The invention also concerns a structure comprising said type of binder as well as its use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.