Shrink films from propylene polymers
US5741563A · kind A · utility
55Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Jul 30, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Shrink films prepared from metallocene catalyzed propylene homopolymers and copolymers are provided. The films exhibit a unique balance of properties as compared to known shrink films including higher stiffness, tensile strength and moisture barrier, lower extractables, improved shrinkage and increased shrink tension. In addition, the shrink behavior of the film can be substantially tailored by modifying the amount of comonomer present in the propylene polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.