US2011263171A1PendingUtilityA1

Poly(trimethylene arylate) fibers, process for preparing, and fabric prepared therefrom

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Assignee: DU PONTPriority: Apr 27, 2010Filed: Apr 27, 2010Published: Oct 27, 2011
Est. expiryApr 27, 2030(~3.7 yrs left)· nominal 20-yr term from priority
Inventors:W. Douglas Bates
D03D 15/283D10B 2501/021D10B 2321/121D10B 2331/04D10B 2401/063Y10T442/30D10B 2501/00
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Claims

Abstract

A fine denier poly(trimethylene arylate) spun drawn fiber is characterized by high denier uniformity. A process for preparing uniform fine denier yarns at spinning speeds of 4000 to 6000 m/min is further disclosed. The poly(trimethylene arylate) fiber hereof comprises 0.5 to 5% by weight of polystyrene dispersed therewithin. Fabrics prepared therefrom are also disclosed.

Claims

exact text as granted — not AI-modified
1 . A fabric comprising a filament comprising a composition comprising 0.1 to 3% by weight of polystyrene, based on the total weight of the polymer in the composition, dispersed in poly(trimethylene arylate) wherein the filament is characterized by a denier per filament of ≦3, a denier coefficient of variation of ≦3% and a birefringence of at least 0.055. 
     
     
         2 . The fabric of  claim 1  wherein the poly(trimethylene arylate) is poly(trimethylene terephthalate). 
     
     
         3 . The fabric of  claim 1  wherein the composition comprises 0.5 to 2% by weight of polystyrene, based on the total weight of the polymer in the composition, dispersed in poly(trimethylene arylate). 
     
     
         4 . The fabric of  claim 3  wherein the composition consists essentially of 0.5 to 2% by weight of polystyrene, based on the total weight of the polymer in the composition, dispersed in poly(trimethylene arylate). 
     
     
         5 . The fabric of  claim 2  wherein the composition comprises 0.5 to 2% by weight of polystyrene, based on the total weight of the polymer in the composition, dispersed in poly(trimethylene terephthalate). 
     
     
         6 . The fabric of  claim 2  wherein the composition consists essentially of 0.5 to 2% by weight of polystyrene, based on the total weight of the polymer in the composition, dispersed in poly(trimethylene terephthalate). 
     
     
         7 . The fabric of  claim 1  wherein the fabric is a woven. 
     
     
         8 . A garment comprising the fabric of  claim 1 .

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