Treatment agent for polyester synthetic fibers, composition containing treatment agent for polyester synthetic fibers, first treatment agent for polyester synthetic fibers, second treatment agent for polyester synthetic fibers, composition containing first treatment agent for polyester synthetic fibers, treatment method for polyester synthetic fibers, and polyester synthetic fibers

Patent metadata

Field	Value
Publication number	US-12448728-B2
Application number	US-202318728636-A
Country	US
Kind code	B2
Filing date	Jan 13, 2023
Priority date	Jan 17, 2022
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

Disclosed is a polyester synthetic fiber treatment agent that contains a silicone (A), a silicone (B), a nonionic surfactant, an anionic ingredient, and optionally a silicone (C). The amount of the silicone (C) contained in the polyester synthetic fiber treatment agent is less than 10% by mass. The silicone (A) is a silanol-modified silicone with a number average molecular weight of not less than 50,000 but less than 200,000. The silicone (B) is a silane coupling agent having at least one functional group selected from the group consisting of a methoxy group, an ethoxy group, an amino group, and an isocyanate group but not including an epoxy group in the molecule. The silicone (C) is at least one selected from the group consisting of silicone resins, dimethyl silicones, and alkyl-modified silicones but excluding those corresponding to being the silicone (A).

First claim

The invention claimed is:

1. A polyester synthetic fiber treatment agent comprising a silicone (A) described below, a silicone (B) described below, a nonionic surfactant, an anionic ingredient, and optionally a silicone (C) described below, wherein
the amount of the silicone (C) contained in the polyester synthetic fiber treatment agent is less than 10% by mass,
the silicone (A) is a silanol-modified silicone with a number average molecular weight of not less than 50,000 but less than 200,000,
the silicone (B) is a silane coupling agent having at least one functional group selected from the group consisting of a methoxy group, an ethoxy group, an amino group, and an isocyanate group but not including an epoxy group in the molecule, and
the silicone (C) is at least one selected from the group consisting of silicone resins, dimethyl silicones, and alkyl-modified silicones but excluding those corresponding to being the silicone (A);
wherein the nonionic surfactant includes at least one compound obtained by adding, in total, from 3 to 50 moles, inclusive, of an alkylene oxide to 1 mole of an alcohol, the alkylene oxide having from 2 to 3 carbon atoms, inclusive, and the alcohol having from 2 to 18 carbon atoms, inclusive, and having from 1 to 4 hydroxyl groups, inclusive.

2. The polyester synthetic fiber treatment agent according to claim 1 , wherein the silicone (B) includes an amino group in the molecule.

3. The polyester synthetic fiber treatment agent according to claim 1 , wherein the anionic ingredient includes at least one selected from the group consisting of organic acids, alkyl sulfonic acids, alkyl sulfuric acids, polyoxyalkylene alkyl sulfuric acids, alkyl phosphoric acid esters, polyoxyalkylene alkyl phosphoric acid esters, and salts thereof.

4. The polyester synthetic fiber treatment agent according to claim 1 , wherein in the polyester synthetic fiber treatment agent, the amount of the silicone (A) contained is not less than 50% by mass and not more than 95% by mass, the amount of the silicone (B) contained is not less than 1% by mass and not more than 25% by mass, the amount of the silicone (C) contained is not less than 0% by mass but less than 10% by mass, the amount of the nonionic surfactant contained is not less than 1% by mass and not more than 20% by mass, and the amount of the anionic ingredient contained is not less than 0.1% by mass and not more than 20% by mass.

5. The polyester synthetic fiber treatment agent according to claim 1 , wherein the polyester synthetic fiber treatment agent is arranged as a set that includes a first agent for treating a polyester synthetic fiber containing the silicone (A), the nonionic surfactant, the anionic ingredient, and optionally the silicone (C) and a second agent for treating a polyester synthetic fiber containing the silicone (B).

6. A composition containing a polyester synthetic fiber treatment agent, comprising the polyester synthetic fiber treatment agent according to claim 1 and a solvent.

7. A polyester synthetic fiber to which the polyester synthetic fiber treatment agent according to claim 1 is adhered.

8. The polyester synthetic fiber according to claim 7 , wherein the polyester synthetic fiber is applied to wadding.

9. A first agent for treating a polyester synthetic fiber that is combined in use with a second agent for treating a polyester synthetic fiber containing a silicone (B) described below, the first agent for treating a polyester synthetic fiber comprising a silicone (A) described below, a nonionic surfactant, an anionic ingredient, and optionally a silicone (C) described below, wherein
the amount of the silicone (C) contained in a mixture of the first agent for treating a polyester synthetic fiber and the second agent for treating a polyester synthetic fiber is less than 10% by mass,
the silicone (A) is a silanol-modified silicone with a number average molecular weight of not less than 50,000 but less than 200,000,
the silicone (B) is a silane coupling agent having at least one functional group selected from the group consisting of a methoxy group, an ethoxy group, an amino group, and an isocyanate group but not including an epoxy group in the molecule,
the silicone (C) is at least one selected from the group consisting of silicone resins, dimethyl silicones, and alkyl-modified silicones but excluding those corresponding to being the silicone (A);
wherein the nonionic surfactant includes at least one compound obtained by adding, in total, from 3 to 50 moles, inclusive, of an alkylene oxide to 1 mole of an alcohol, the alkylene oxide having from 2 to 3 carbon atoms, inclusive, and the alcohol having from 2 to 18 carbon atoms, inclusive, and having from 1 to 4 hydroxyl groups, inclusive.

10. A composition containing a first agent for treating a polyester synthetic fiber, comprising the first agent for treating a polyester synthetic fiber according to claim 9 and a solvent.

11. A method for treating a polyester synthetic fiber, comprising applying to a polyester synthetic fiber a dilute liquid of a polyester synthetic fiber treatment agent that is obtained by adding to a solvent the composition containing a first agent for treating a polyester synthetic fiber according to claim 10 and a second agent for treating a polyester synthetic fiber containing a silicone (B) described below, wherein
the silicone (B) is a silane coupling agent having at least one functional group selected from the group consisting of a methoxy group, an ethoxy group, an amino group, and an isocyanate group but not including an epoxy group in the molecule.

12. The method for treating a polyester synthetic fiber according to claim 11 , wherein the fiber to which the dilute liquid of a polyester synthetic fiber treatment agent has been applied is heat treated at not less than 100° C. and not more than 200° C.

Assignees

• Takemoto Oil & Fat Co Ltd

Inventors

• KANEKO Ikki
• Ohgai Takashige

Classifications

• D06M2101/32

  Polyesters · CPC title

• D06M23/10

  Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof · CPC title

• D06M15/653

  modified by isocyanate compounds · CPC title

• D06M15/65

  containing epoxy groups · CPC title

• D06M15/53

  Polyethers (polyacetals D06M15/39) · CPC title