Filament, material, and method for producing the material

Abstract

Provided are a filament that does not impair the strength that is intrinsic to the filament and contains a disperse dye, and has excellent color fastness, a material using the filament, and a method for producing the material. The filament containing a polyamide resin having an aromatic ring and/or a hetero ring, and a disperse dye having an aromatic ring and/or a hetero ring.

1 . A filament comprising: a polyamide resin having an aromatic ring and/or a hetero ring; and a disperse dye having an aromatic ring and/or a hetero ring. 
     
     
         2 . The filament according to  claim 1 , wherein the disperse dye comprises at least one selected from an aromatic azo compound, a heterocyclic azo compound, and an anthraquinone compound. 
     
     
         3 . The filament according to  claim 1 , wherein the disperse dye has a skeleton represented by Formula (C1) or a skeleton represented by Formula (C2):
   Ar 1 —N═N—Ar 2   Formula (C1)
   where in Formula (C1) Ar 1  and Ar 2  each independently represent an aryl group having from 6 to 40 carbons or a heteroaryl group having from 5 to 40 carbons,   
       
         
           
           
               
               
           
         
       
     
     
         4 . The filament according to  claim 1 , wherein a single fiber fineness is from 2.0×10 −5  to 50 dtex. 
     
     
         5 . The filament according to  claim 1 , wherein an elongation percentage as measured in accordance with JIS L 1013:2010 is 30% or more. 
     
     
         6 . The filament according to  claim 1 , wherein the filament comprises a polyamide resin containing diamine-derived structural units and dicarboxylic acid-derived structural units, 70 mol % or more of the diamine-derived structural units are derived from xylylenediamine, and 70 mol % or more of the dicarboxylic acid-derived structural units are derived from α,ω-linear aliphatic dicarboxylic acid having from 4 to 20 carbons. 
     
     
         7 . The filament according to  claim 6 , wherein the xylylenediamine contains from 30 to 100 mol % of m-xylylenediamine and from 0 to 70 mol % of p-xylylenediamine. 
     
     
         8 . The filament according to  claim 6 , wherein the dicarboxylic acid contains α,ω-linear aliphatic dicarboxylic acid having from 11 to 14 carbons. 
     
     
         9 . The filament according to  claim 6 , wherein the dicarboxylic acid contains 1,12-dodecanedioic acid. 
     
     
         10 . The filament according to  claim 1 , wherein a filament length is 5 mm or more. 
     
     
         11 . The filament according to  claim 1 , wherein the polyamide resin is a crystalline polyamide resin. 
     
     
         12 . The filament according to  claim 1 , wherein the filament is a multifilament. 
     
     
         13 . The filament according to  claim 1 , wherein, among all structural units constituting the polyamide resin, from 20 to 80 mol % of structural units have aromatic rings and/or hetero rings. 
     
     
         14 . A material comprising a filament, the filament contained in the material comprising: a polyamide resin having an aromatic ring and/or a hetero ring; and a disperse dye having an aromatic ring and/or a hetero ring. 
     
     
         15 . The material according to  claim 14 , wherein the filament a filament comprising: a polyamide resin having an aromatic ring and/or a hetero ring; and a disperse dye having an aromatic ring and/or a hetero ring. 
     
     
         16 . The material according to  claim 14 , wherein the material is a knitted fabric or a woven fabric. 
     
     
         17 . The material according to  claim 14 , having color fastness of 3 or more, wherein the color fastness is a grade corresponding to a degree of coloration on a white cotton fabric that is evaluated based on a gray scale for contamination in accordance with JIS L 0805:2011 when the material is fixed on a desk, and a 1 kg cylindrical weight fully covered by cotton No. 3-1 specified in JIS L 0803:2011 is placed on the material and moved back and forth for 100 times. 
     
     
         18 . A method for producing a filament according to  claim 1 , the method comprising applying a polyamide filament containing a polyamide resin having an aromatic ring and/or a hetero ring to a liquid containing a disperse dye and water, the disperse eye having an aromatic ring and/or a hetero ring. 
     
     
         19 . A method for producing a material, the method comprising applying a woven fabric or a knitted fabric, the woven fabric formed from a polyamide filament containing a polyamide resin having an aromatic ring and/or a hetero ring, the knitted fabric formed from a polyamide filament containing a polyamide resin having an aromatic ring and/or a hetero ring, to a liquid containing a disperse dye having an aromatic ring and/or a hetero ring and water. 
     
     
         20 . The filament according to  claim 1 , wherein the disperse dye has a skeleton represented by Formula (C1) or a skeleton represented by Formula (C2); and
 the filament comprises a polyamide resin containing diamine-derived structural units and dicarboxylic acid-derived structural units, 70 mol % or more of the diamine-derived structural units are derived from xylylenediamine, and 70 mol % or more of the dicarboxylic acid-derived structural units are derived from α,ω-linear aliphatic dicarboxylic acid having from 4 to 20 carbons;
   Ar 1 —N═N—Ar 2   Formula (C1)
 
   where in Formula (C1) Ar 1  and Ar 2  each independently represent an aryl group having from 6 to 40 carbons or a heteroaryl group having from 5 to 40 carbons, Formula (C2)