Back to results
US 5,455,305 AGranted
Propylene polymer yarn and articles made therefrom
AssigneeMontell North America Inc.
InventorAdam F. Galambos
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMontell North America Inc.
InventorAdam F. Galambos
Estimating the term…
Polyolefin yarn capable of increased shrinkage comprising continuous strand of multiple monofilament fibers or staple fibers of propylene polymer material consisting essentially of at least about 5 parts by weight, but less than 50 parts by weight of syndiotactic propylene polymer having a syndiotactic pentad fraction of 0.7 or more, blended with crystalline isotactic propylene polymer, each propylene polymer material independently selected from the group consisting of: (I) homopolymers of propylene; and (II) random crystalline propylene copolymers, terpolymers or both, consisting essentially of from about 80 to about 98.5% of propylene; and from about 1.5 to about 20.0% of at least one comonomer selected from the group consisting of ethylene and C.sub.4 -C.sub.8 alpha-olefins; said copolymer preferably containing from about 2 to about 10% ethylene when said C.sub.4 -C.sub.8 alpha-olefin is not present; and said terpolymer preferably containing from about 0.5 to about 5% ethylene when said C.sub.4 -C.sub.8 alpha-olefin is present; and including mixtures of such copolymers and terpolymers, wherein said amounts are expressed as weight %. Fabric, especially pile fabric such as carpeting is disclosed which is made from the yarn and has improved appearance retention properties.
Polyolefin yarn capable of increased shrinkage comprising a continuous strand of multiple monofilament fibers or staple fibers of propylene polymer material consisting essentially of about 10 to about 45 parts by weight of a syndiotactic propylene polymer having a syndiotactic pentad fraction of 0.7 or more, blended with a crystalline, isotactic propylene polymer selected from the group consisting of:
A polyolefin pile fabric of increased resiliency and appearance retention comprising a backing and a yarn secured to said backing and extending outwardly therefrom, said yarn comprising a continuous strand of multiple monofilament fibers or staple fibers of propylene polymer material consisting essentially of about 10 to 45 parts by weight of a syndiotactic propylene polymer having a syndiotactic pentad fraction of 0.7 or more, blended with a crystalline, isotactic propylene polymer selected from the group consisting of:
A material selected from the group consisting of woven textile, nonwoven textile and geotextile prepared from a polyolefin fiber or yarn capable of increased resiliency and shrinkage comprising propylene polymer material consisting essentially of about 10 to 45 parts by weight of a syndiotactic propylene polymer having a syndiotactic pentad fraction of 0.7 or more, blended with a crystalline, isotactic propylene polymer selected from the group consisting of:
Dependencies are inferred from the claim text.