Verbessertes Propylenpolymer-Garn und daraus hergestellter Artikel

摘要

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 C4-C8 alpha-olefins; said copolymer preferably containing from about 2 to about 10% ethylene when said C4-C8 alpha-olefin is not present; and said terpolymer preferably containing from about 0.5 to about 5% ethylene when said C4-C8 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.