Fiber-treating agent

Abstract

A fiber-treating agent which improves water resistance and heat resistance problematic in naturally derived fibers, imparts heat shape memory ability, improves stretchability (tenacity) and the feel of the surfaces, and causes no coloring of naturally derived fibers. The fiber-treating agent contains the following components (A) and (B): (A): a compound having a hydrogen bond term δH in Hansen solubility parameter of 18.3 MPa 1/2 or less, and having at least one of a carboxy group or a salt thereof, and no fused ring; and (B): water.

1 . A fiber-treating agent comprising the following components (A) and (B):
 (A): a compound having a hydrogen bond term δH in Hansen solubility parameter of 18.3 MPa 1/2  or less, and having at least one of a carboxy group or a salt thereof, and no fused ring; and   (B): water.   
     
     
         2 . The fiber-treating agent according to  claim 1 , wherein the component (A) is one or more compounds selected from the group consisting of the following components (A1) and (A2):
 (A1) an aromatic compound having a hydrogen bond term δH in Hansen solubility parameter of 18.3 MPa 1/2  or less, and having at least one of a carboxy group or a salt thereof, and no fused ring; and   (A2) a compound having a hydrogen bond term δH in Hansen solubility parameter of 11.0 MPa 1/2  or more and 18.3 MPa 1/2  or less, and having at least one of a carboxy group or a salt thereof, and no fused ring (excluding aromatic compounds).   
     
     
         3 . The fiber-treating agent according to  claim 2 , wherein the component (A1) is a compound of the following formula (1) or a salt thereof, or a compound of the following formula (2) or a salt thereof: 
       
         
           
           
               
               
           
         
         wherein ═X represents a methylidene group or an oxo group, R 1  represents a hydrogen atom, a hydroxy group, or an optionally substituted alkyl group, aryl group, alkoxy group, aryloxy group, or aralkyloxy group, and R 2  is an o-phenylene group, an m-phenylene group, a p-phenylene group, a benzylidene group, or an optionally substituted alkylene group, provided that when R 2  has no aryl group, R 1  is an aryl group, an aryloxy group, or an aralkyloxy group; and 
       
       
         
           
           
               
               
           
         
         wherein A 1  to A 5  each independently represent a hydrogen atom, an acetyl group, a halogen atom, or a linear or branched alkyl group, alkenyl group, alkoxy group, or alkenyloxy group having 1 to 6 carbon atoms. 
       
     
     
         4 . The fiber-treating agent according to  claim 1 , wherein the component (A) contains a component (A1-1) benzoic acid or a salt thereof. 
     
     
         5 . The fiber-treating agent according to  claim 4 , wherein a pH of the fiber-treating agent is 2.0 or more and less than 6.5, and a content of the component (A1-1) benzoic acid or a salt thereof in the fiber-treating agent is, as benzoic acid (acid form), 0.8 mass % or more and 40 mass % or less. 
     
     
         6 . The fiber-treating agent according to  claim 4 , wherein a pH of the fiber-treating agent is 2.0 or more and less than 6.5, and a content of the component (A1-1) benzoic acid or a salt thereof in the fiber-treating agent is, as benzoic acid (acid form), 5.0 mass % or more and 40 mass % or less. 
     
     
         7 . The fiber-treating agent according to  claim 4 , wherein a pH of the fiber-treating agent is 6.5 or more and 11.0 or less, and a content of the component (A1-1) benzoic acid or a salt thereof in the fiber-treating agent is, as benzoic acid (acid form), 0.8 mass % or more and 40 mass % or less. 
     
     
         8 . The fiber-treating agent according to  claim 4 , wherein a pH of the fiber-treating agent is 6.5 or more and 11.0 or less, and a content of the component (A1-1) benzoic acid or a salt thereof in the fiber-treating agent is, as benzoic acid (acid form), 5.0 mass % or more and 40 mass % or less. 
     
     
         9 . The fiber-treating agent according to  claim 1 , comprising two or more compounds as the component (A). 
     
     
         10 . The fiber-treating agent according to  claim 1 , wherein a pH at 25° C. is 2.0 or more and 11.0 or less. 
     
     
         11 . The fiber-treating agent according to  claim 4 , wherein a pH of the fiber-treating agent is 2.0 or more and 11.0 or less, and a content of the component (A1-1) benzoic acid or a salt thereof in the fiber-treating agent is, as benzoic acid (acid form), 10 mass % or more. 
     
     
         12 . The fiber-treating agent according to  claim 2 , wherein the component (A1) is a component (A1-2): the component (A1) other than benzoic acid or a salt thereof.