Polymer films
US8338551B2 · kind B2 · utility
5Cited by
12References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2007 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Dec 4, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/268
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Method for the preparation of a blown film containing 300-600 gels/m2 of size in the range 100-2000 μm as measured by an optical control system, in which the film is derived by extrusion from an ethylene-α-olefin copolymer. The method is carried out by preparing the copolymer in a particle forming polymerization process in the presence of a single site catalyst system containing a single site catalyst, a cocatalyst, and a support material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.