Product and process
AssigneeMilliken Research Corporation
InventorEmile E. Habib
Life of this patent
Estimating the term…
Abstract
This invention relates to a process for modifying the characteristics of structures containing keratin fibers and, more particularly, to processes for reducing the relaxation and felting shrinkage of a structure containing keratin fibers and for setting said fibers in a given configuration if desired, and to the structures so improved.
Claims23
A process for shrinkproofing a textile fabric containing keratin fibers which comprises impregnating said fabric with a isocyanate/polyether polyol composition containing a co-reactant having at least two groups containing at least one active hydrogen and combination thereof selected from the group consisting of --OH, --NH.sub.2 --COOH, and --SH to provide a solids pickup of up to about 10% by weight, drying the treated fabric to remove substantially all of the liquid, and curing said treated fabric at a temperature sufficient to effect a reaction between the keratin fibers and the isocyanate/polyether polyol components of said composition;
- said isocyanate/polyether polyol composition being an aqueous or a non-isocyanate-reactive organic solvent composition containing a mixture of a isocyanate which is activated by heating at an elevated temperature and a polyether polyol, other than a polyol based on a natural occurring polymer, said isocyanate being blocked only when said composition is an aqueous composition.
A process for shrinkproofing a textile fabric containing keratin fibers comprising
- (a) impregnating said fabric with a non-reactive organic solvent solution containing
- (i) a monomeric polyfunctional isocyanate,
- (ii) a polyether polyol, to provide a solids pickup of up to about 10% by weight, and
- (iii) a catalyst for effecting the reaction between said polyfunctional isocyanate and said polyether polyol
- (b) drying the treated fabric to remove substantially all of the solvent;
- and
- (c) curing said fabric at a temperature which is sufficient to effect a reaction between the keratin fibers and the components of the organic solution.
A process for shrink-proofing a textile fabric containing keratin fibers comprising
- (a) impregnating said fabric with an aqueous composition comprising
- (i) a blocked isocyanate which is activated by heating at an elevated temperature,
- (ii) a polyether diol or a triol;
- and
- (iii) a catalyst for effecting the reaction between said isocyanate and the polyether constituent;
- (d) drying the treated fabric to remove substantially all of the water, and
- (c) curing said fabric at a temperature sufficient to effect a reaction between the keratin fibers and the components of the aqueous composition.
A process for durably setting a fabric containing keratin fibers in a desired configuration comprising
- (a) impregnating said fibers with an organic solution containing a non-reactive organic solvent and
- (i) a polyfunctional isocyanate;
- (ii) a polyether polyol;
- and
- (iii) a catalyst for effecting the reaction between said polyfunctional isocyanate and said polyether polyol;
- (b) fixing said impregnated fabric in the desired configuration, and
- (c) heating said fabric, while maintaining it in the desired configuration, to a temperature sufficient to set the fabric.
A process for producing garments containing keratin fibers and being durably set in a desired configuration comprising
- (a) impregnating said fibers with an organic solution containing a non-reactive organic solvent and
- (i) a polyfunctional isocyanate;
- (ii) a polyether polyol;
- and
- (iii) a catalyst for effecting the reaction between said polyfunctional isocyanate and said polyether polyol;
- (b) drying said fabric to remove substantially all of the liquid,
- (c) cutting and sewing said fabric into a garment,
- (d) arranging said garment in the desired configuration, and
- (e) curing said agent while maintaining the garment in the desired configuration.
A process for durably setting a fabric containing keratin fibers in a desired configuration comprising
- (a) impregnating said fibers with a non-reactive organic solvent solution containing
- (i) a monomeric polyfunctional isocyanate;
- (ii) a polyether polyol to provide a solids pickup of up to about 10% by weight;
- and
- (iii) a catalyst for effecting the reaction between said polyfunctional isocyanate and said polyether polyol;
- (b) fixing said impregnated fabric in the desired configuration,
- (c) drying said fabric to remove substantially all of the solvent, and
- (d) heating said fabric while maintaining it in the desired configuration, to a temperature sufficient to set the fabric.
Dependencies are inferred from the claim text.