Composition containing first treatment agent for synthetic fiber, method for preparing diluted solution of treatment agent for synthetic fiber, method for treating synthetic fiber, method for producing synthetic fiber, and method for producing short fiber

Patent metadata

Field	Value
Publication number	US-2024328074-A1
Application number	US-202218706205-A
Country	US
Kind code	A1
Filing date	Oct 26, 2022
Priority date	Nov 2, 2021
Publication date	Oct 3, 2024
Grant date	—

Abstract

Disclosed is a first agent-containing composition for treating synthetic fiber that is combined in use with a second agent for treating synthetic fiber containing a specific nonionic surfactant. The first agent-containing composition contains a first agent for treating synthetic fiber and a solvent. The first agent contains specific organic phosphoric acid ester salts at specific ratios and has a specific acid value. The solvent has a boiling point at atmospheric pressure of not more than 105° C. Assuming that the sum of the amounts of the first agent and the solvent contained in the first agent-containing composition is 100 parts by mass, the amount of the first agent contained in the first agent-containing composition is not less than 35 parts by mass and not more than 55 parts by mass.

First claim

1 . A first agent-containing composition for treating synthetic fiber that is combined in use with a second agent for treating synthetic fiber containing a nonionic surfactant (C) described below and is separate from the second agent for treating synthetic fiber when not in use, the first agent-containing composition for treating synthetic fiber comprising a first agent for treating synthetic fiber described below and a solvent(S) described below, wherein
assuming that the sum of the amounts of the first agent for treating synthetic fiber and the solvent(S) contained in the first agent-containing composition for treating synthetic fiber is 100 parts by mass, the amount of the first agent for treating synthetic fiber contained in the first agent-containing composition for treating synthetic fiber is not less than 35 parts by mass and not more than 55 parts by mass, the first agent for treating synthetic fiber contains an organic phosphoric acid ester salt (A) described below, an organic phosphoric acid ester salt (B) described below, and optionally a nonionic surfactant (C) described below, the first agent for treating synthetic fiber has a mass ratio of the sum of the contents of the organic phosphoric acid ester salt (A) and the organic phosphoric acid ester salt (B) and the content of the nonionic surfactant (C) such that (organic phosphoric acid ester salt (A)+organic phosphoric acid ester salt (B))/nonionic surfactant (C) is 95/5 to 100/0, assuming that the sum of the amounts of the organic phosphoric acid ester salt (A) and the organic phosphoric acid ester salt (B) contained in the first agent for treating synthetic fiber is 100 parts by mass, the amount of the organic phosphoric acid ester salt (A) contained in the first agent for treating synthetic fiber is not less than 80 parts by mass but less than 100 parts by mass and the amount of the organic phosphoric acid ester salt (B) contained in the first agent for treating synthetic fiber is more than 0 parts by mass but not more than 20 parts by mass, the first agent for treating synthetic fiber has an acid value of more than 0 mg KOH/g but not more than 18 mg KOH/g, as measured by a potentiometric titration method, the solvent(S) has a boiling point at atmospheric pressure of not more than 105° C., the organic phosphoric acid ester salt (A) is an alkali metal salt of an organic phosphoric acid ester having a hydrocarbon group with not less than 16 and not more than 18 carbon atoms, the organic phosphoric acid ester salt (B) is an alkali metal salt of an organic phosphoric acid ester having a hydrocarbon group with not less than 4 and not more than 8 carbon atoms, and the nonionic surfactant (C) has a (poly) oxyalkylene structure in the molecule.

2 . The first agent-containing composition for treating synthetic fiber according to claim 1 , wherein the acid value of the first agent for treating synthetic fiber measured by the potentiometric titration method is more than 1 mg KOH/g but not more than 16 mg KOH/g.

3 . The first agent-containing composition for treating synthetic fiber according to claim 1 , wherein the solvent(S) is water.

4 . A method for preparing a dilute liquid of synthetic fiber treatment agent, comprising adding, to water, the first agent-containing composition for treating synthetic fiber and the second agent for treating synthetic fiber according to claim 1 such that first agent for treating synthetic fiber/second agent for treating synthetic fiber is 20/80 to 80/20 (mass ratio) and the dilute liquid has a nonvolatile concentration of not less than 0.01% by mass and not more than 10% by mass.

5 . The method for preparing a dilute liquid of synthetic fiber treatment agent according to claim 4 , comprising a first step and a second step, wherein
the first step is a step of adding the first agent-containing composition for treating synthetic fiber and the second agent for treating synthetic fiber to a first water to prepare a dilute liquid of synthetic fiber treatment agent with a nonvolatile concentration of more than 2% by mass but not more than 10% by mass, and the second step is a step of adding a second water to the dilute liquid of synthetic fiber treatment agent prepared in the first step to prepare a dilute liquid of synthetic fiber treatment agent with a nonvolatile concentration of not less than 0.01% by mass and not more than 2% by mass.

6 . The method for preparing a dilute liquid of synthetic fiber treatment agent according to claim 5 , wherein the first step includes adding the first agent-containing composition for treating synthetic fiber and the second agent for treating synthetic fiber to water of not less than 60° C. and not more than 95° C. that is of not less than 20% by mass and not more than 70% by mass of the total amount of the first water and thereafter further adding the remaining first water of not more than 40° C.

7 . The method for preparing a dilute liquid of synthetic fiber treatment agent according to claim 5 , wherein the first step includes adding the first agent-containing composition for treating synthetic fiber to water of not less than 60° C. and not more than 95° C. that is of not less than 20% by mass and not more than 70% by mass of the total amount of the first water, thereafter further adding the remaining first water of not more than 40° C., and then further adding the second agent for treating synthetic fiber.

8 . A method for treating synthetic fiber, comprising applying, to a synthetic fiber, a dilute liquid of synthetic fiber treatment agent obtained by adding the first agent-containing composition for treating synthetic fiber and the second agent for treating synthetic fiber according to claim 1 to water.

9 . A method for producing synthetic fiber, comprising applying, to a synthetic fiber, a dilute liquid of synthetic fiber treatment agent obtained by adding the first agent-containing composition for treating synthetic fiber and the second agent for treating synthetic fiber according to claim 1 to water.

10 . A method for producing short fiber, comprising applying, to a synthetic fiber, a dilute liquid of synthetic fiber treatment agent obtained by adding the first agent-containing composition for treating synthetic fiber and the second agent for treating synthetic fiber according to claim 1 to water.

Assignees

• Takemoto Oil & Fat Co Ltd

Inventors

• Kimura Yutaka
• Okada Tomoya
• KANEKO Ikki

Classifications

• D06M2200/40

  Reduced friction resistance, lubricant properties; Sizing compositions · CPC title

• D06M2101/32

  Polyesters · CPC title

• D06M15/53

  Polyethers (polyacetals D06M15/39) · CPC title

• D06M13/292 Primary

  Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof · CPC title

• D06M13/165

  Ethers (D06M13/11 takes precedence) · CPC title