Dyed and/or printed non-woven fabric

Abstract

The invention relates to a dyed and/or printed non-woven fabric consisting of non-split and/or at least partially split microfibres and/or microfilaments consisting of synthetic polymers containing at least one polyester constituent and at least one polyamide constituent and, optionally, at least one polyurethane constituent, said fabric having been dyed and/or printed by means of at least one azo dye which is produced on the non-woven fabric. The invention also relates to a method for dyeing and/or printing the inventive fabric.

1 - 39 . (canceled)  
     
     
         40 . A dyed and/or printed nonwoven, comprising: 
 at least one of microfibers and microfilaments of synthetic polymers, the synthetic polymers including at least one polyester component and at least one polyamide component; and    at least one azo dye disposed on the nonwoven.    
     
     
         41 . The nonwoven as recited in  claim 40 , wherein the synthetic polymers include at least one polyurethane component.  
     
     
         42 . The nonwoven as recited in  claim 40 , wherein the microfibers and/or microfilaments are unsplit.  
     
     
         43 . The nonwoven as recited in  claim 40 , wherein the microfibers and/or microfilaments are at least partially split.  
     
     
         44 . The nonwoven as recited in  claim 40 , wherein the at least one polyester component is 5 to 95% by weight of the synthetic polymer and the at least one polyamide component is 95 to 5% by weight of synthetic polymer.  
     
     
         45 . The nonwoven as recited in  claim 40 , wherein the polyamide component is selected from the group consisting of polyamide 6, polyamide 66 and polyamide 11.  
     
     
         46 . The nonwoven as recited in  claim 40 , wherein the polyester component includes at least one of polyethylene terephthalate, polypropylene terephathalate, polybutylene terephthalate, polylactic acid, and a copolyester.  
     
     
         47 . The nonwoven as recited in  claim 40 , wherein a titer of the microfibers and/or microfilaments is ≦1 dtex.  
     
     
         48 . The nonwoven as recited in  claim 40 , wherein the nonwoven is a staple-fiber nonwoven.  
     
     
         49 . The nonwoven as recited in  claim 40 , wherein the nonwoven is a spunbonded nonwoven.  
     
     
         50 . The nonwoven as recited in  claim 40 , wherein the nonwoven has a basic weight of 15 to 400 g/m 2 .  
     
     
         51 . A method for dyeing and/or printing a nonwoven with at least one azo dye, the nonwoven including at least one of microfibers and microfilaments of synthetic polymers, the synthetic polymers including at least one polyester component and at least one polyamide component, the method comprising: 
 treating the nonwoven with at least one dyestuff developer component at a treatment temperature of ≧90° C. and at least one of a fast color salt and a fast color base;    where the treating includes treating the nonwoven with a fast color base, diazotizing the diestuff developer component with the fast color base; and    coupling the dyestuff developer component and the fast color salt and/or the fast color base on the nonwoven.    
     
     
         52 . The method as recited in  claim 51 , wherein the dyestuff developer component is selected from the group consisting of arylamides of aromatic hydroxycarboxylic acids, arylamides of keto acids and hydroxynaphthyl ketones.  
     
     
         53 . The method as recited in  claim 52 , wherein the dyestuff developer component is an arylamide of an aromatic hydroxycarboxylic acid and includes at least one of an amide of the 2-hydroxy-3-naphthoic acid, an amide of anthracene, an amide of carbazole, and an amide of diphenylene oxide.  
     
     
         54 . The method as recited in  claim 53 , wherein the dyestuff developer component includes one of a 2-hydroxy-3-naphthoic acid anilide, a 2-hydroxy-3-naphthoic acid o-toluidide, a 2-hydroxy-3 naphthoic acid-4, a 6-dimethoxy-3-chloroanilide, a 2-hydroxy-3-naphthoic acid α-naphthylamide and a [bis-2-hydroxy-3-naphthoic acid]dianiside.  
     
     
         55 . The method as recited in  claim 54  wherein the dyestuff developer component includes 2-hydroxy-3-anthracene-carboxylic acid o-toluidide as an amide of anthracene.  
     
     
         56 . The method as recited in  claim 53 , wherein the dyestuff developer component includes 2-hydroxycarbazole-3-carboxylic acid 4′-choroanilide as an amide of carbazole.  
     
     
         57 . The method as recited in  claim 53 , wherein the dyestuff developer component includes 3-hydroxydiphenylene oxide-2-carboxylic acid 2′,5′-dimethoxyanilide as an amide of diphenylene oxide.  
     
     
         58 . The method as recited in  claim 52 , wherein the dyestuff developer component includes diacetic acid o-toluidide or terephthaloyl-bis-acetic acid bis-[2-methoxy-4-chloro-5-methylanilide] as arylamide of a keto acid.  
     
     
         59 . The method as recited in  claim 52 , wherein the fast color base including at least one of o-chloroaniline, o-nitroaniline, m-nitro-p-toluidine, 4-diethylsulfonamido-1-amino-1-methoxybenzene, 4-chloro-2-aminodiphenyl ether, α-aminoanthraquinone, 4-amino-3-methoxyazobenzene, 4-amino-1-benzoylamino-3-methoxy-6-methylbenzene, o-dianisidine, 4-amino-4′-methoxydiphenylamine, 3,5-bis-trifluoromethylaniline, and 3-fluorosulfonyl aniline.  
     
     
         60 . The method as recited in  claim 51 , wherein the treating of the nonwoven with the dyestuff developer component is performed using an exhaust dyeing method.  
     
     
         61 . The method as recited in  claim 51 , wherein the treating is performed at a temperature of 90 to 150° C.  
     
     
         62 . The method as recited in  claim 51 , wherein the treating of the nonwoven with the dyestuff developer component is performed for a duration of 10 to 180 minutes.  
     
     
         63 . The method as recited in  claim 60 , wherein the exhaust dyeing method includes intermediate drying and a subsequent heat treatment.  
     
     
         64 . The method as recited in  claim 63 , wherein the subsequent heat treatment is performed using steam.  
     
     
         65 . The method as recited in  claim 63 , wherein the intermediate drying process is performed at a temperature of 80 to 180° C.  
     
     
         66 . The method as recited in  claim 63 , wherein the intermediate drying process is performed for a duration of 30 seconds to 10 minutes.  
     
     
         67 . The method as recited in  claim 64 , wherein the subsequent heat treatment is performed at a temperature of 100 to 130° C.  
     
     
         68 . The method as recited in  claim 64 , wherein the subsequent heat treatment is performed for a duration is 15 seconds to 60 minutes.  
     
     
         69 . The method as recited in  claim 51 , wherein at least one of the treating step and the coupling step is performed using an exhaust dyeing method.  
     
     
         70 . The method as recited in  claim 69 , wherein the treating is performed at a temperature of −10 to 130° C.  
     
     
         71 . The method as recited in  claim 69 , wherein treating is performed for a duration of 5 to 120 minutes.  
     
     
         72 . The method as recited in  claim 51 , wherein at least one of the treating step and the coupling step is performed using a pad dyeing method.  
     
     
         73 . The method as recited in  claim 72 , wherein the pad dyeing method includes a subsequent drying and a subsequent heat treatment.  
     
     
         74 . The method as recited in  claim 72 , wherein the treatment temperature during the pad dyeing method is −10 to 60° C.  
     
     
         75 . The method as recited in  claim 72 , wherein the treatment is performed for a duration of not longer than 10 seconds.  
     
     
         76 . The method as recited in  claim 73 , wherein the subsequent drying is performed at 80 to 180° C.  
     
     
         77 . The method as recited in  claim 73 , wherein the subsequent drying is performed for 30 seconds to 10 minutes.  
     
     
         78 . The method as recited in  claim 73 , wherein the subsequent heat treatment is performed using steam and at a temperature of 100 to 130° C.  
     
     
         79 . The method as recited in  claim 51 , wherein the dyestuff developer component and/or the fast color base or the fast color salt is imprinted on the nonwoven.  
     
     
         80 . The method as recited in  claim 79 , wherein the printing is performed using a direct printing method.  
     
     
         81 . The method as recited in  claim 80 , wherein the direct printing method includes at least one of a rotary screen, a flat screen printing and an ink jet method.  
     
     
         82 . The method as recited in  claim 51 , wherein at least one of the dyestuff developer component, the fast color base and the fast color salt are present in aqueous solution.  
     
     
         83 . The method as recited in  claim 51 , wherein the coupling step is performed in an aqueous solution.  
     
     
         84 . The method as recited in  claim 51 , further comprising employing the nonwoven in at least one of a clothing piece, a home textile, a lining material, a medical device, and a hygienic device.