Adhesive composition containing grafted polyethylene
US8247053B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2010 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Jan 28, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to an adhesive composition comprising, relative to its total weight: from 1 to 40% of a polyethylene (A) grafted with a functional monomer or a blend of a polyethylene (A1) with a second polymer (A2) different from (A1), said blend of (A1) and (A2) being co-grafted with an unsaturated functional monomer, the content by weight of unsaturated functional monomer relative to (A) being in the range from 30 to 100000 ppm; from 25 to 98% of a non-grafted polyethylene (B) having a density in the range from 0.900 to 0.965; from 1 to 35% of an elastomeric product (C). The invention also relates to a multilayer structure comprising this composition, said structure being able to serve as protection of metal tubes used for the fabrication of oil pipelines and gas pipelines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.