Claims
- 1. A continuous method for controlling the application of a uniform coating of a treating solution to a moving web of fibrous cellulose-containing material comprising:
- (a) continuously applying a treating solution containing a fugitive tint to at least one surface of the material to effect coloration of the surface to which the treating solution is applied;
- (b) determining the uniformity of the coloration of the treated surface;
- (c) altering the distribution of the treating solution onto the treated surface to render the surface coloration of the treated material more uniform, the treating solution having dissolved therein (1) a heterocyclic polyhydroxy compound selected from the group consisting of dimethyldihydroxy ethyleneurea, dimethyloldihydroxy ethyleneurea, trimethylol melamine, hexamethylol melamine and mixtures thereof, (2) choline chloride, the weight ratio of (1) to (2) being 0.1-6.0, (3) crosslinking catalyst, the weight ratio of (1) to (3) being 5-10, and (4) 0.5-1.5 g/L fugitive tint; and
- (d) decolorizing the applied coating of treating solution by removing the fugitive tint therefrom in an aqueous medium.
- 2. The method of claim 1 in which the distribution of the treating solution on the treated material is altered by changing at least one operating variable selected from (a) pressure of application rolls on the web, (b) viscosity of the treating solution, (c) temperature of drying, (d) temperature of the treating solution, (e) web speed, (f) drying time of the treated material, and (g) pH.
- 3. The method of claim 1 in which the fibrous cellulose-containing material is a prepared fabric selected from cotton, rayon, acetate, blends of cotton and rayon, linen, jute, china grass and blends of at least 50% wt. cotton with a non-cellulosic natural or synthetic fiber.
- 4. The method of claim 3 in which the cellulose-containing material is a prepared fabric containing at least 60% wt. cotton.
- 5. The method of claim 1 in which the fibrous cellulose-containing material is paper.
- 6. The method of claim 1 in which the treating solution contains 55-85 g/L choline chloride, 24-45 g/L heterocyclic polyhydroxy compound, 5-7.5 g/L catalyst, 1-2 g/L wetting agent, 10-50 g/L anti-migration agent and 0.5-1.5 g/L fugitive tint.
- 7. The method of claim 6 in which wet pickup of the treating solution is 50-95% owf, drying is carried out at about 250 F. for 2-3 minutes and crosslinking of the heterocyclic polyhydroxy compound with the cellulose and reaction with the choline chloride is carried out at 320-365 F. for 120-90 seconds.
- 8. The method of claim 1 in which the treating solution contains 55-85 g/L choline chloride, 10-25 g/L heterocyclic polyhydroxy compound, 3-7.5 g/L catalyst, 1-2 g/L wetting agent, 10-50 g/L anti-migration agent and 0.5-1.5 g/L fugitive tint.
- 9. The method of claim 8 in which wet pickup of the treating solution is 50-95% owf, drying is carried out at about 250 F. for 2-3 minutes and crosslinking of the heterocyclic polyhydroxy compound with the cellulose and reaction with the choline chloride is carried out at 320-340 F. for 60-45 seconds.
- 10. The method of claim 1 in which the treating solution contains 55-85 g/L choline chloride, 10-25 g/L heterocyclic polyhydroxy compound, 3-7.5 g/L catalyst, 1-2 g/L wetting agent, 30-50 g/L anti-migration agent and 0.5-1.5 g/L fugitive tint.
- 11. The method of claim 1 in which the treating solution contains 20-45 g/L choline chloride, 10-25 g/L heterocyclic polyhydroxy compound, 5-7.5 g/L catalyst and, 1-2 g/L wetting agent.
- 12. The method of claim 11 in which wet pickup of the treating solution is 65-85% owf, drying is carried out at 225-250 F. for 2-5 minutes and crosslinking of the heterocyclic polyhydroxy compound with the cellulose and reaction with the choline chloride is carried out at 300-325 F. for 90-60 seconds.
- 13. The method of claim 1 wherein the treating solution is printed on one side only of 100% cotton fabric to obtain differential shrinkage effects.
- 14. An aqueous composition, which upon the addition of crosslinking catalyst, is useful for changing the surface properties of fibrous cellulose-containing material comprising by weight, basis total dissolved solids, (1) a heterocyclic polyhydroxy compound selected from the group consisting of dimethyloldihydroxy ethyleneurea, trimethylol melamine, hexamethylol melamine and mixtures thereof; (2) choline chloride, the ratio of (1) to (2) being 0.1-6.0; and (3) 0.5-1.5% fugitive tint.
- 15. An aqueous composition useful for changing the surface properties of fibrous cellulose-containing materials comprising (1) heterocyclic polyhydroxy compound, (2) choline chloride, the weight ratio of (1) to (2) being 0.1-6, (3) crosslinking catalyst, the weight ratio of (1) to (3) being 5-10, and (4) 0.1-1.5 g/L fugitive tint.
- 16. The composition of claim 14 or 15, which contains 55-85 g/L choline chloride and 25-45 g/L cyclic polyhydroxy compound.
- 17. The composition of claim 14 or 15, which contains 20-45 g/L choline chloride and 10-25 g/L cyclic polyhydroxy compound.
- 18. The composition of claim 14 or 15, which contains 55-85 g/L choline chloride and 7.5-15 g/L cyclic polyhydroxy compound.
- 19. The composition of claim 14 or 15 in which composition is comprised by weight of 98-65% water and 2-35% dissolved solids.
- 20. The composition of claim 14 or 15 which contains a pH adjustment compound in an amount to adjust the hydrogen ion concentration of the composition to within the range of pH 3.5-8.0.
- 21. The composition of claim 20 in which the pH adjustment compound is used to adjust the pH of the composition to within the range of pH 5.5-6.8.
- 22. The composition of claims 14 or 15 which also contains dissolved therein 0.1-1.5% non-anionic wetting agent.
- 23. The composition of claim 14 or 15 which also contains dissolved therein 1-10 g/L fluorescent whitening agent.
- 24. The composition of claim 14 which also contains dissolved therein 10-50 g/L anti-migration agent.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of copending U.S. patent application Ser. No. 08/867,132, filed Jun. 2, 1997, which is a continuation-in-part of U.S. patent application Ser. No., 08/738,996, filed Oct. 29, 1996, and now abandoned.
US Referenced Citations (6)
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
867132 |
Jun 1997 |
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Parent |
738996 |
Oct 1996 |
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