Cast film of propylene polymers
US5741565A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1995 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Jul 25, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a multilayered cast film which has an elongation at break greater than 100%. It comprises: PA1 A) at least one layer of a crystalline homopolymer of a C.sub.3 -C.sub.6 .alpha.-olefin, or a random copolymer of propylene with ethylene and/or a C.sub.4 -C.sub.10 .alpha.-olefin, or a composition of crystalline random copolymers of propylene with ethylene and/or a C.sub.4 -C.sub.8 .alpha.-olefin (Component A); and PA1 B) at least one layer of a propylene homopolymer, or a propylene copolymer with ethylene or a C.sub.4 -C.sub.10 .alpha.-olefin, or a propylene copolymer with ethylene and a C.sub.4 -C.sub.10 .alpha.-olefin, having an elongation at break lower than 30% (Component B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.