Biaxially oriented propylene polymer film or sheet articles
US5318842A · kind A · utility
16Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1992 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Dec 3, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed are biaxially oriented film or sheet articles comprising: PA0 (a) a base or inner layer of a film or sheet of a crystalline homopolymer of a C.sub.3-10 alpha-olefin monomer or of a certain propylene copolymers; and PA0 (b) at least one surface layer of a broad molecular weight distribution propylene polymer material, optionally containing a propylene homopolymer having an isotactic index greater than 80, or certain propylene copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.