Elastic film compositions with improved tear resistance
US8354465B2 · kind B2 · utility
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4References
12Claims
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Key dates
| Filing date | Oct 23, 2007 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Mar 25, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L57/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A film composition comprising one or more propylene-based polymers and one or more hydrocarbon resins, and methods for making the same are provided. The propylene-based polymer may have (i) 60 wt % or more units derived from propylene, (ii) isotactically arranged propylene derived sequences, and (iii) a heat of fusion less than 65 J/g. The hydrocarbon resin may have a glass transition temperature greater than 20° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.