Thermoplastic C2-&agr;-olefin copolymer blends and films
US6773820B1 · kind B1 · utility
15Cited by
45References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1999 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Aug 26, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymer blend, and mono- and multilayer films made therefrom, having improved properties such as heat scaling or puncture resistance, wherein the blend has a first polymer of ethylene and at least one &agr;-olefin having a polymer melting point between 55 to 75° C.; a second polymer of ethylene and at least one &agr;-olefin having a polymer melting point between 85 to 110° C.; a third thermoplastic polymer having a melting point between 115 to 130° C., and optionally a fourth polymer, e.g. EVA, having a melting point between 90 to 100° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.