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US 12,404,608 B2Granted
Dyeable fabric comprising melt-spun thermoplastic polyurethane fibers
AssigneeLubrizol Advanced Materials, Inc.
InventorsLalith B. Suragani Venu, Ravi R. Vedula, Christopher A. Sprague, Brandon Walton
Life of this patent
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Abstract
The invention relates to a melt-spun thermoplastic polyurethane fiber which comprises a copolymer diol derived from caprolactone and polyether polyol and fabrics made therefrom, both of which are capable of being dyed under disperse dyeing conditions.
Claims14
A fabric comprising;
- a. a first fiber component, wherein the first fiber component is a thermoplastic hard yarn having 10% to 75% ultimate elongation measured according to ASTM D2256;
- b. a second fiber component comprising a melt-spun thermoplastic polyurethane fiber having at least 300% ultimate elongation measured according to ASTM D2731;
- wherein the first fiber component and the second fiber component together form the fabric,
- wherein the fabric is dyed at a temperature of at least 130° C., and wherein the melt-spun thermoplastic polyurethane fiber exhibits hysteresis after 5th load and un-load cycle of
- (a) at 100% elongation has hysteresis of less than 30%;
- (b) at 150% elongation has hysteresis of less than 30%;
- and
- (c) at 200% elongation has hysteresis of less than 30%;
- wherein hysteresis is measured according to ASTM D2731, wherein the second fiber component is a melt-spun thermoplastic fiber comprising the reaction product of a polyol component, wherein the polyol component comprises a co-polymer diol derived from caprolactone monomer and poly(tetramethylene ether glycol);
- a hydroxyl terminated chain extender component;
- and a first diisocyanate component;
- and an isocyanate functional prepolymer cross-linking agent, and wherein the co-polymer diol comprises the reaction product of 50% by weight caprolactone monomer polyol and 50% by weight poly(tetramethylene ether glycol).
9 more elements
A process for preparing a dispersed dyed fabric, comprising the steps of:
- (1) providing a fabric comprising (a) a first fiber component is a thermoplastic hard yarn having 10% to 75% ultimate elongation measured according to ASTM D2256 and (b) a second fiber component comprising a melt-spun thermoplastic polyurethane fiber having at least 300% ultimate elongation measured according to ASTM D2731, wherein the melt-spun thermoplastic polyurethane fiber exhibits hysteresis after 5th load and un-load cycle of
- (a) at 100% elongation has hysteresis of less than 30%;
- (b) at 150% elongation has hysteresis of less than 30%;
- and
- (c) at 200% elongation has hysteresis of less than 30%;
- wherein hysteresis is measured according to ASTM D2731, wherein the second fiber component is a melt-spun thermoplastic fiber comprising the reaction product of a polyol component, wherein the polyol component comprises a co-polymer diol derived from caprolactone monomer and poly(tetramethylene ether glycol);
- a hydroxyl terminated chain extender component;
- and a first diisocyanate component;
- and an isocyanate functional prepolymer cross-linking agent, and wherein the co-polymer diol comprises the reaction product of 50% by weight caprolactone monomer polyol and 50% by weight poly(tetramethylene ether glycol);
- and
- (2) dyeing the fabric at a temperature of at least 130° C. using disperse dyeing conditions.
8 more elements
Dependencies are inferred from the claim text.