Polyolefin fiber compositions
First Claim
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1. A polyolefin fiber having an improved balance of properties comprising 90 to 99 weight percent polyolefin and 1 to 10 weight percent aromatic hydrocarbon resin.
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Abstract
Polyolefin fibers, primarily polypropylene fibers, having improved properties are provided. The ability to produce fibers having an improved balance of properties including increased tenacity, modulus and elongation, is accomplished by incorporating from 1 to 10 weight percent aromatic hydrocarbon resin in the polypropylene fiber-forming composition which can be based on a propylene homopolymer or copolymer or blend of these propylene polymer resins with a non-propylene-containing resin.
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Citations
14 Claims
- 1. A polyolefin fiber having an improved balance of properties comprising 90 to 99 weight percent polyolefin and 1 to 10 weight percent aromatic hydrocarbon resin.
- 13. A polypropylene fiber having an improved balance of properties comprising 90 to 99 weight percent propylene homopolymer having an isotacticity of 92 percent or higher and 1 to 10 weight percent of an aromatic hydrocarbon resin having a weight average molecular weight from about 300 to 8000, molecular weight distribution from about 1.2 to 5.0 and selected from the group consisting of selectively hydrogenated resins of polymerized styrenic-based polymers, resins obtained from polymerized mixed aromatic monomer/feed streams, and resins obtained by polymerizing pure monomer feed streams.
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