Treatment agent for polyester-based synthetic fibers, composition containing treatment agent for polyester-based synthetic fibers, first treatment agent for polyester-based synthetic fibers, composition containing first treatment agent for polyester-based synthetic fibers, second treatment agent for polyester-based synthetic fibers, composition containing second treatment agent for polyester-based synthetic fibers, diluted solution of treatment agent for polyester-based synthetic fibers, method

Abstract

Disclosed is a polyester synthetic fiber treatment agent that contains 5% by mass or more of a (poly) oxyalkylene derivative, 1% by mass or more of an organic acid compound, and 5% by mass or more of an organic phosphoric acid ester compound. A 5% by mass water-diluted liquid of the polyester synthetic fiber treatment agent (containing no solvent) has a pH at 25° C. of 5.5 or more and 8.5 or less. The organic acid compound is at least one selected from the group consisting of an organic acid, an organic acid salt, and an organic acid anhydride. The organic phosphoric acid ester compound is at least one selected from the group consisting of an organic phosphoric acid ester and a salt thereof having a hydrocarbon group with 16 or more and 20 or less carbon atoms in a molecule.

1 . A polyester synthetic fiber treatment agent comprising:
 5% by mass or more of a (poly)oxyalkylene derivative (A);   1% by mass or more of an organic acid compound (B); and   5% by mass or more of an organic phosphoric acid ester compound (C), wherein   a 5% by mass water-diluted liquid of the polyester synthetic fiber treatment agent (containing no solvent) has a pH at 25° C. of 5.5 or more and 8.5 or less,   the organic acid compound (B) is at least one selected from the group consisting of an organic acid, an organic acid salt, and an organic acid anhydride,   the organic phosphoric acid ester compound (C) is at least one selected from the group consisting of an organic phosphoric acid ester and a salt thereof having a hydrocarbon group with 16 or more and 20 or less carbon atoms in a molecule.   
     
     
         2 . The polyester synthetic fiber treatment agent according to  claim 1 , wherein the organic acid compound (B) is at least one selected from the group consisting of mono- to pentabasic carboxylic acids in which the number of carbon atoms, excluding carboxy group-derived carbon atoms, is 0 or more and 9 or less, salts of mono- to pentabasic carboxylic acids in which the number of carbon atoms, excluding carboxy group-derived carbon atoms, is 0 or more and 9 or less, and di- to pentabasic carboxylic anhydrides in which the number of carbon atoms, excluding carboxy group-derived carbon atoms, is 0 or more and 9 or less. 
     
     
         3 . The polyester synthetic fiber treatment agent according to  claim 1 , wherein the (poly)oxyalkylene derivative (A) contains at least one selected from the group consisting of polyoxyalkylene alkylamine and polyoxyalkylene alkenylamine. 
     
     
         4 . The polyester synthetic fiber treatment agent according to  claim 1 , wherein assuming that the sum of the contents of the (poly)oxyalkylene derivative (A), the organic acid compound (B), and the organic phosphoric acid ester compound (C) is 100 parts by mass, the polyester synthetic fiber treatment agent contains the (poly)oxyalkylene derivative (A) and the organic acid compound (B) in total in an amount of 20 parts by mass or more and 80 parts by mass or less, and contains the organic phosphoric acid ester compound (C) in an amount of 20 parts by mass or more and 80 parts by mass or less. 
     
     
         5 . The polyester synthetic fiber treatment agent according to  claim 1 , wherein
 the polyester synthetic fiber treatment agent is prepared as a set including first and second components of polyester synthetic fiber treatment agent,   the first component of polyester synthetic fiber treatment agent contains the (poly)oxyalkylene derivative (A),   the second component of polyester synthetic fiber treatment agent contains the organic phosphoric acid ester compound (C),   either one or both of the first and second components of polyester synthetic fiber treatment agent contain the organic acid compound (B).   
     
     
         6 . The polyester synthetic fiber treatment agent according to  claim 1 , wherein the polyester synthetic fiber is a polyester short fiber. 
     
     
         7 . The polyester synthetic fiber treatment agent according to  claim 1 , wherein the polyester synthetic fiber is a fiber for spun yarn production. 
     
     
         8 . A composition containing polyester synthetic fiber treatment agent, comprising the polyester synthetic fiber treatment agent according to  claim 1  and a solvent(S), wherein the solvent(S) has a boiling point of 105° C. or lower at atmospheric pressure. 
     
     
         9 . A first component of polyester synthetic fiber treatment agent, comprising a (poly)oxyalkylene derivative (A), wherein
 the first component of polyester synthetic fiber treatment agent is used in combination with a second component of polyester synthetic fiber treatment agent or a composition containing second component of polyester synthetic fiber treatment agent,   the second component of polyester synthetic fiber treatment agent contains an organic phosphoric acid ester compound (C),   the composition containing second component of polyester synthetic fiber treatment agent contains the second component of polyester synthetic fiber treatment agent, which contains an organic phosphoric acid ester compound (C), and a solvent(S),   either one or both of the first and second components of polyester synthetic fiber treatment agent contain an organic acid compound (B),   a 5% by mass water-diluted liquid of a mixture (containing no solvent) of the first component of polyester synthetic fiber treatment agent and the second component of polyester synthetic fiber treatment agent has a pH at 25° C. of 5.5 or more and 8.5 or less,   the mixture (containing no solvent) of the first agent component of synthetic fiber treatment agent and the second component of polyester synthetic fiber treatment agent contains 5% by mass or more of the (poly)oxyalkylene derivative (A), 1% by mass or more of the organic acid compound (B), and 5% by mass or more of the organic phosphoric acid ester compound (C),   the organic acid compound (B) is at least one selected from the group consisting of an organic acid, an organic acid salt, and an organic acid anhydride,   the organic phosphoric acid ester compound (C) is at least one selected from the group consisting of an organic phosphoric acid ester and a salt thereof having a hydrocarbon group with 16 or more and 20 or less carbon atoms in a molecule, and   the solvent(S) has a boiling point of 105° C. or lower at atmospheric pressure.   
     
     
         10 . A composition containing first component of polyester synthetic fiber treatment agent, comprising the first component of polyester synthetic fiber treatment agent according to  claim 9  and a solvent(S), wherein the solvent(S) has a boiling point of 105° C. or lower at atmospheric pressure. 
     
     
         11 . A second component of polyester synthetic fiber treatment agent, comprising an organic phosphoric acid ester compound (C), wherein
 the second component of polyester synthetic fiber treatment agent is used in combination with a first component of polyester synthetic fiber treatment agent or a composition containing first component of polyester synthetic fiber treatment agent,   the first component of polyester synthetic fiber treatment agent contains a (poly)oxyalkylene derivative (A),   the composition containing first component of polyester synthetic fiber treatment agent contains the first component of polyester synthetic fiber treatment agent, which contains a (poly)oxyalkylene derivative (A), and a solvent(S),   either one or both of the first and second components of polyester synthetic fiber treatment agent contain an organic acid compound (B),   a 5% by mass water-diluted liquid of a mixture (containing no solvent) of the first component of polyester synthetic fiber treatment agent and the second component of polyester synthetic fiber treatment agent has a pH at 25° C. of 5.5 or more and 8.5 or less, the mixture (containing no solvent) of the first component of polyester synthetic fiber treatment agent and the second component of polyester synthetic fiber treatment agent contains 5% by mass or more of the (poly)oxyalkylene derivative (A), 1% by mass or more of the organic acid compound (B), and 5% by mass or more of the organic phosphoric acid ester compound (C),   the organic acid compound (B) is at least one selected from the group consisting of an organic acid, an organic acid salt, and an organic acid anhydride,   the organic phosphoric acid ester compound (C) is at least one selected from the group consisting of an organic phosphoric acid ester and a salt thereof having a hydrocarbon group with 16 or more and 20 or less carbon atoms in a molecule, and   the solvent(S) has a boiling point of 105° C. or lower at atmospheric pressure.   
     
     
         12 . A composition containing second component of polyester synthetic fiber treatment agent, comprising the second component of polyester synthetic fiber treatment agent according to  claim 11  and a solvent(S), wherein the solvent(S) has a boiling point of 105° C. or lower at atmospheric pressure. 
     
     
         13 . A diluted liquid of polyester synthetic fiber treatment agent, comprising the polyester synthetic fiber treatment agent according to  claim 1 , wherein the diluted liquid has a concentration of the polyester synthetic fiber treatment agent of 0.1% by mass or more and 10% by mass or less. 
     
     
         14 . A method for treating polyester synthetic fiber, comprising applying to a polyester synthetic fiber a diluted liquid of polyester synthetic fiber treatment agent prepared by adding the polyester synthetic fiber treatment agent according to  claim 1  to water. 
     
     
         15 . A method for treating polyester synthetic fiber, comprising applying to a polyester synthetic fiber a diluted liquid of a polyester synthetic fiber treatment agent prepared by adding the composition containing polyester synthetic fiber treatment agent according to  claim 8  to water. 
     
     
         16 . (canceled) 
     
     
         17 . A polyester synthetic fiber to which the polyester synthetic fiber treatment agent according to  claim 1  adheres.