Textile composite with enhanced biodegradability

Abstract

The invention relates to a textile composite, comprising a textile substrate, which comprises a synthetic polymer and cotton, and a composition for enhancing the biodegradability of the textile substrate, wherein the composition is absorbed by the cotton.

1 . A textile composite comprising
 a textile substrate, which comprises a synthetic polymer and cotton, and   a composition for enhancing the biodegradability of the textile substrate, wherein the composition is absorbed by the cotton.   
     
     
         2 . The textile composite according to  claim 1 , wherein the textile substrate is a yarn comprising a plurality of cotton fibers, which comprise the cotton, and at least one synthetic fiber, which comprise the synthetic polymer, in particular wherein the at least one synthetic fiber comprises a plurality of synthetic staple fibers being intermixed with the cotton fibers and/or at least one synthetic filament being surrounded by a sheath comprising the cotton fibers and optionally additional synthetic fibers. 
     
     
         3 . The textile composite according to  claim 1 , wherein the textile substrate is a yarn comprising the synthetic polymer in a weight content of between 10 and 30%, in particular between 15 and 25%, and/or cotton in a weight content between 90 and 70%, in particular between 85 and 75%, in particular wherein the cotton carries, in particular absorbs, the composition. 
     
     
         4 . The textile composite according to  claim 1 , wherein the textile substrate is a fabric, in particular a woven fabric, comprising a plurality of yarns, wherein at least a part of the yarns comprise at least one synthetic fiber, which comprise the synthetic polymer, and cotton fibers, which comprise the cotton. 
     
     
         5 . A textile composite, in particular according to preceding claims  claim 1 , comprising
 a textile substrate, which comprises a synthetic polymer and indigo, and   a composition, which is disposed on the textile substrate, for enhancing the biodegradability of the textile substrate.   
     
     
         6 . The textile composite according to  claim 5 , wherein the textile substrate is a fabric comprising yarns, in particular a woven fabric comprising warp yarns and weft yarns, wherein
 at least a part of the yarns is indigo dyed, and wherein   at least a part of the yarns comprises the synthetic polymer, and wherein   the composition is disposed at least on the yams which comprise the synthetic polymer, in particular is only disposed on the yarns which comprise the synthetic polymers, on all yarns having the same orientation as the yarns comprising the synthetic polymers, or on an all yarns of the fabric.   
     
     
         7 . The textile composite according to  claim 6 , wherein
 the yams which comprise the synthetic polymer are the indigo dyed yams, preferably wherein the indigo dyed yarns comprise cotton by which the composition is at least partially absorbed, or   wherein the yarns which comprise the synthetic polymer are other yarns than the yarns being indigo dyed, preferably in that the textile substrate is a woven fabric, wherein the warp yarns are indigo dyed and wherein the composition is disposed on the weft yarns, which comprise the synthetic polymer, or vice versa.   
     
     
         8 . The textile composite according to  claim 6 , wherein the fabric comprises cotton in a weigh content between 90 and 98% and the synthetic polymer in a weight content between 10 and 2%, in particular wherein the fabric is a woven fabric comprising warp yarns and weft yarns, wherein the warp yarns and/or the weft yarns are textile composites. 
     
     
         9 . A textile composite, in particular according to  claim 1 , comprising
 a textile substrate, which comprises a synthetic polymer, and   a composition, which is disposed on the textile substrate, for enhancing the anaerobic biodegradability of the textile substrate.   
     
     
         10 . A textile composite, in particular according to  claim 1 , comprising
 a textile substrate, which comprises a synthetic polymer, and   a composition, which is disposed on the textile substrate, wherein   the composition comprises a polymer for enhancing textile-biodegradability in a weight content between 0,5 and 10%.   
     
     
         11 . The textile composite according to  claim 10 , wherein the polymer for enhancing textile-biodegradability comprises a biopolymer. 
     
     
         12 . The textile composite according to  claim 11 , wherein the biopolymer comprises and/or is derived from a polysaccharide. 
     
     
         13 . The textile composite according to  claim 11 , wherein the biopolymer comprises and/or is derived from starch. 
     
     
         14 . The textile composite according to  claim 11 , wherein the biopolymer comprises starch and/or polylactic acid. 
     
     
         15 . The textile composite according to  claim 10 , wherein the polymer for enhancing textile-biodegradability is a biodegradable polymer. 
     
     
         16 . The textile composite according to  claim 15 , wherein the biodegradable polymer comprises a polymer selected from the group of polylactic acid and starch. 
     
     
         17 . The textile composite according to  claim 10 , wherein the polymer for enhancing textile-biodegradability comprises one or more repeat units that are connected by hydrolysable linkages. 
     
     
         18 . The textile composite according to  claim 17 , wherein one or more repeat units comprise lactic acid and/or monosaccharides. 
     
     
         19 . The textile composite according to  claims 10 , wherein the polymer for enhancing the textile-biodegradability composite is starch and/or polylactic acid. 
     
     
         20 . A textile composite, in particular according to  claim 1 , comprising
 a textile substrate, which comprises a synthetic polymer, and   a composition, which is disposed on the textile substrate, wherein   the composition comprises starch in a weight content between 0,5 and 10%.   
     
     
         21 . The textile composite according to  claim 10 , wherein composition comprises the polymer for enhancing textile-biodegradability, in particular starch, in a weight content of at least 1%, 2%, 3% or 5% and/or maximally 9%, 8%, 7% or 6%, preferably between 2 and 10%, particularly preferred between 3 and 8%, most preferably between 4 and 6%. 
     
     
         22 . The textile composite according to  claim 10 , wherein the composition comprises 2-hydroxy-3-(trimethylammonio)propyl ether, in particular wherein
 the composition comprises the 2-hydroxy-3-(trimethylammonio)propyl ether in a weight content of at least 0,1%, 0,3%, 0,5%, 0,6% or 0,8% and/or of maximally 4%, 3%, 2% or 1%, preferably between 0,3 and 3%, particularly preferred between 0,5 and 2%, most preferably between 0,6 and 1%, and/or in particular wherein   the composition comprises the polymer for enhancing textile-biodegradability, in particular starch, in a weight content of between 2 and 15 times, preferably between 3 and 12 times, more preferably between 4 and 10 times, most preferably between 5 and 8 times, the weight content of 2-hydroxy-3-(trimethylammonio)propyl ether.   
     
     
         23 . A textile composite, in particular according to  claim 1 , comprising
 a textile substrate, which comprises a synthetic polymer, and   a composition, which is disposed on the textile substrate, for enhancing the biodegradability of the textile substrate, wherein the composition comprises a deaerating agent.   
     
     
         24 . The textile composite according to  claim 23 , wherein
 the composition comprises the deaerating agent in a weight content of at least 3%, 5%, 6%, 7% or 8% and/or of maximally 18%, 16%, 14%, 12% or 10%, preferably between 3 and 16%, particularly preferred between 5 and 12%, most preferably between 7 and 10%.   
     
     
         25 . A textile composite, in particular according to  claim 1 , comprising
 a textile substrate, which comprises a synthetic polymer, and   a composition, which is disposed on the textile substrate, for enhancing the biodegradability of the textile substrate, wherein the composition comprises an emulsifier.   
     
     
         26 . The textile composite according to  claim 25 , wherein
 the emulsifier comprises alkyl polyglycol ethers, especially alkyl polyglycol ethers with 10-11 ethylene oxide units, and/or wherein   the composition comprises the emulsifier in a weight content of at least 4%, 6%, 8%, 10% or 12% and/or of maximally 24%, 20%, 16% or 14%, preferably between 6 and 20%, particularly preferred between 8 and 16%, most preferably between 10 and 14%.   
     
     
         27 . A textile composite, in particular according to  claim 1 , comprising
 a textile substrate, which comprises a synthetic polymer, and   a composition, which is disposed on the textile substrate, for enhancing the biodegradability of the textile substrate, wherein the composition comprises a crosslinking agent.   
     
     
         28 . The textile composite according to  claim 27 , wherein
 the crosslinking agent is a self-crosslinking polyurethan, and/or wherein   the composition comprises the crosslinking agent in weight content of at least 20%, 30%, 50%, 65%, 70% or 72,5% and/or of maximally 90%, 80% or 75%, preferably between 50 and 90%, particularly preferred between 65 and 80%, most preferably between 70 and 75%.   
     
     
         29 . A textile composite, in particular according to  one of the preceding claims   claim 1 , comprising
 a textile substrate, which comprises a synthetic polymer, and   a composition, which is disposed on the textile substrate, for enhancing the biodegradability of the textile substrate, wherein the composition comprises an organic acid, in particular carboxylic acid, with less than ten carbon atoms.   
     
     
         30 . The textile composite according to  claim 29 , wherein
 the organic acid is selected from the group consisting of acetic acid, citric acid, tartaric acid, maleic acid, lactic acid, and oxalic acid, most preferred acetic acid, and/or wherein   the composition comprises the organic acid in a weight content of at least 0,3%, 0,5%, 0,8%, 1,0% or 1,2% and/or maximally 5%, 3%, 2% or 1%, preferably between 0,5 and 3%, particularly preferred between 0,8 and 2%, most preferably between 1 and 1,5%.   
     
     
         31 . The textile composite according to  claim 1 , wherein the biodegradability is measured according to ASTM D 5511, in particular wherein the textile composite comprises the synthetic polymer in a weight content of at least 2%, preferably at least 3%, 4%, 5% or 6%, and biodegrades to at least 95%, preferably at least 96%, 97%, 98% or 99%, within 150 days. 
     
     
         32 . The textile composite according to  claim 9 , wherein
 the textile substrate is a synthetic fiber, which comprises the synthetic polymer, in particular wherein the composition is disposed on the synthetic fiber, or wherein   the textile substrate is a yarn comprising at least one synthetic fiber, which comprises the synthetic polymer, in particular wherein the composition is disposed at least in parts on the at least one synthetic fiber and/or on additional natural fibers, in particular cotton fibers, or wherein   the textile substrate is a fabric, in particular a woven, non-woven or knitted fabric, comprising synthetic fibers or yarns comprising synthetic fibers, which fibers comprise the synthetic polymer, in particular wherein the composition is disposed at least in parts on the synthetic fibers.   
     
     
         33 . The textile composite according to  claim 1 , wherein the textile composite comprises the composition in a weight content between 0,5 and 25%, preferably between 1 and 20%, more preferably between 2 and 15%, most preferably between 3 and 10%. 
     
     
         34 . The textile composite according to  claim 1 , wherein the synthetic polymer is selected from the group consisting of a polyester, a polyethylene, a polypropylene, polystyrene, a polyamid, a polyaramid, a polyoxymethylene, a polytetrafluorethylene, a polyetheretherketone, a polyphenylenesulfid, polyalkyleneterepthalate, preferably a poly butyleneterephthalate, a polytrimethy leneterephthalate, a polyethyleneterephthalate, a polyurethane, apolyvinylalkohol, a copolymer of two or more thereof or a mixture of two or more thereof, preferably a polyester, polyethylene, polypropylene, polystyrene, polyethylenterephthalate, polyamide, poly butyleneterephthalate, polyurethane, polyvinylalkohol or a mixture of two or more thereof, most preferred is a polyester. 
     
     
         35 . A method for providing a textile composite according to  claim 1 , comprising the steps of:
 a) providing a textile substrate, which comprises a synthetic polymer:   b) providing a composition for enhancing the biodegradability of the textile substrate; and   c) disposing the composition on the the textile substrate to obtain the textile composite.   
     
     
         36 . A method, in particular according to  claim 35 , for providing a denim fabric, which comprises a synthetic polymer, with enhanced biodegradability, comprising the steps of:
 a) providing a textile substrate, which comprises a synthetic polymer:   b) providing a composition for enhancing the biodegradability of the textile substrate:   c) disposing the composition on the textile substrate to obtain a textile composite,   wherein the textile substrate in step c) is a denim fabric or   wherein the textile substrate in step c) is a filament, a yam or a warp of yarns, which is processed into a denim fabric after carrying out step c).   
     
     
         37 . Use of starch in a composition for enhancing the biodegradability of a textile substrate, which comprises a synthetic polymer, wherein the composition is disposed on the textile substrate. 
     
     
         38 . Use of a polymer for enhancing textile-biodegradability in a composition for enhancing the biodegradability of a textile substrate, which comprises a synthetic polymer, wherein the composition is disposed on the textile substrate.