Process for the coating of textiles

Abstract

The present invention relates to a process for the production of coated textiles in which a textile substrate is firstly brought into contact with an aqueous dispersion comprising at least one inorganic salt and at least one modified cellulose.

1 .- 11 . (canceled) 
     
     
         12 . A process for the production of a coated textile, comprising at least the steps of
 a) bringing a textile substrate into contact with an aqueous dispersion A comprising at least one inorganic salt and at least one modified cellulose,   b) bringing a textile substrate into contact with an aqueous dispersion B comprising at least one polymer selected from the group consisting of polyacrylate and polybutadiene and   c) precipitating the at least one polymer selected from the group consisting of polyacrylate and polybutadiene in or on the textile substrate.   
     
     
         13 . The process according to  claim 12 , wherein the inorganic salt is a salt selected from the group consisting of alkali metal salts and alkaline-earth metal salts. 
     
     
         14 . The process according to  claim 13 , wherein the alkali metal salt is a salt selected from the group consisting of alkali metal halides, alkali metal nitrates, alkali metal phosphates, alkali metal sulfates, alkali metal carbonates and alkali metal hydrogen carbonates. 
     
     
         15 . The process according to  claim 13 , wherein the alkaline-earth metal salt is a salt selected from the group consisting of alkaline-earth metal halides, alkaline-earth metal nitrates, alkaline-earth metal phosphates, alkaline-earth metal sulfates, alkaline-earth metal carbonates and alkaline-earth metal hydrogen carbonates. 
     
     
         16 . The process according to  claim 12 , wherein the inorganic salt is present in dispersion A in an amount of 0.01 to 25% by weight, based on the total amount of dispersion A. 
     
     
         17 . The process according to  claim 12 , wherein the modified cellulose is a compound selected from the group consisting of methylcellulose, ethylcellulose, propylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose, carboxyethylcellulose and carboxypropylcellulose. 
     
     
         18 . The process according to  claim 12 , wherein the modified cellulose is present in dispersion A in an amount of 10 ppm to 5% by weight, based on the total amount of dispersion A. 
     
     
         19 . The process according to  claim 12 , wherein the textile substrate employed is a woven fabric, knitted fabric or nonwoven based on natural and/or synthetic fibers. 
     
     
         20 . The process according to  claim 12 , wherein the at least one polymer selected from the group consisting of polyacrylate and polybutadiene is precipitated in step c) in a bath containing water or on use of a temperature in the range from 80 to 120° C.) 
     
     
         21 . A coated textile obtained by a process according to  claim 12 . 
     
     
         22 . The coated textile according to  claim 21 , wherein the coated textile is synthetic leather.