Resin compositions for producing biaxially oriented polypropylene films
US7282539B2 · kind B2 · utility
2Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2004 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Dec 11, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polypropylene resin compositions are provided that are useful in the production of biaxially oriented polypropylene films (BOPPs). The resins of the present invention are blends of high crystalline (low solubles) polypropylene homopolymer and an ethylene/propylene random copolymer (RCP). These blends can be used to replace standard high solubles BOPP grade polypropylene homopolymers. In addition, the use of high crystalline polypropylene homopolymers in the blends imparts improved stiffness to the finished films while maintaining good processability of the blends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.