Adhesive blend of polyolefins and grafted block copolymer of polystyrene
US5070143A · kind A · utility
12Cited by
20References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1989 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Mar 9, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/941
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Composition comprising a mixture of from about 30% to about 99.9% of a polyolefin base resin; from about 0.1% to about 50% of a graft polymerized block copolymer having polystyrene end blocks and an aliphatic middle block; from 0 to about 40% by weight of an elastomer different from the above components; and from 0 to about 30% by weight of a nonelastomeric second polyolefin made from different monomers from those of the polyolefin base resin. The composition can be used as an adhesive film or tie layer, optinally by coextrusion between layers to be joined. Coatings and coated substrates are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.