IP Library › Granted Patent US 7,013,628
Granted Patent B2
US 7,013,628 · App. 10/737,872 · Granted Mar 21, 2006

Process for making poly(trimethyleneterephthalate) bulked continuous filaments, the filaments thereof and carpets made therefrom

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Quick Facts
Patent No.
US 7,013,628
App. No.
10/737,872
Granted
Mar 21, 2006
Kind
B2
Abstract

Polyester carpets of poly(trimethylene terephthalate) are disclosed which have excellent stain-resistance, texture retention and resistance to crushing. The bulked continuous filament yarn used to make the carpets and the process for making the yarns are also disclosed.

Claims (6)

1. A poly(trimethylene terephthalate) bulked and entangled continuous filaments yarn, wherein the filaments have random 3-dimensional curvilinear crimps.

2. The yarn of claim 1 , wherein the poly(trimethylene terephthalate) has an intrinsic viscosity between 0.6 and 1.3.

3. A ply-twisted poly(trimethylene terephthalate) yarn comprising hot-fluid jet bulked and entangled continuous filaments, wherein the filaments have random 3-dimensional curvilinear crimps.

4. The ply-twisted yarn of claim 3 , wherein the poly(trimethylene terephthalate) has an intrinsic viscosity between 0.6 and 1.3.

5. The ply-twisted yarn of claim 3 , wherein the yarn has a tenacity from 1.2 to 3.5 grams per denier.

6. A poly(trimethylene terephthalate) yarn prepared by ply-twisting the bulked and entangled continuous filaments yarn of claim 1 to a twist level of bout 3.5 to about 6.5 twists per inch.