Water-soluble quenching oil composition

Patent metadata

Field	Value
Publication number	US-11479737-B2
Application number	US-201716088511-A
Country	US
Kind code	B2
Filing date	Mar 31, 2017
Priority date	Mar 31, 2016
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A water-soluble quenching fluid composition prepared by blending: water, at least one kind selected from a polyoxyalkylene glycol and a derivative thereof (A), and an alkylene glycol ether (B), the polyoxyalkylene glycol or a derivative thereof (A) having a mass average molecular weight of 10,000 or more and 100,000 or less, the alkylene glycol ether (B) having a solubility in 100 mL of water at 20° C. of 2.0 g/100 mL-H 2 O or less and a molecular weight per 1 mol of 1,000 g/mol or less.

First claim

The invention claimed is:

1. A composition, comprising, based on total composition mass:
water in a range of from 70 to 99% by mass:
an alkylene glycol ether (B), in a range of from 0.1 to 10% by mass; and
at least one selected from the group consisting of a polyoxyalkylene glycol and a derivative thereof (A), in a range of from 0.1 to 20% by mass,
wherein the polyoxyalkylene glycol or the derivative thereof (A) has a weight average molecular weight in a range of from more than 10,000 to 100,000,
wherein the polyoxyalkylene glycol or the derivative thereof (A) comprises a compound of formula (I):
R 1 O—(R A O) n —R 2   (I),

R 1 and R 2 independently being H or, optionally substituted, an alkyl group having from 1 to 10 carbon atoms, an acyl group having from 1 to 11 carbon atoms, or a saturated or unsaturated alicyclic hydrocarbon group, or aromatic hydrocarbon group having from 5 to 18 carbon atoms, R A being an alkylene group having from 2 to 6 carbon atoms, and n being a number that provides a weight average molecular weight in a range of from more than 10,000 to 100,000,
wherein the alkylene glycol ether (B) has a molecular weight of 1,000 g/mol or less,
wherein the alkylene glycol ether (B) has a solubility in 100 mL of water at 20° C. of 2.0 g/100 mL-H 2 O or less,
wherein the alkylene glycol ether (B) comprises ,
R 11 O—(R B O) m —R 12   (II),

R 11 and R 12 independently being H or, optionally substituted, an alkyl group haying from 1 to 10 carbon atoms, an acyl group having from 1 to 11 carbon atoms, or a saturated or unsaturated alicyclic hydrocarbon group or aromatic hydrocarbon group having from 5 to 18 carbon atoms, RB being an alkylene group haying from 2 to 6 carbon atoms, m being a number that provides a molecular weight per 1 mol of the compound in a range of 1,000 g/mol or less, provided that at least one of R 11 and R 12 is, optionally substituted, an alkyl group having from 1 to 10 carbon atoms or a saturated or unsaturated alicyclic hydrocarbon group or aromatic hydrocarbon group having from 5 to 18 carbon atoms,
wherein the composition is suitable as a water-soluble quenching fluid composition.

2. The composition of claim 1 , wherein the alkylene glycol ether (B) has a solubility in 100 mL of water at 20° C. of 1.0 g/100 mL-H 2 O or less.

3. The composition of claim 1 , wherein the alkylene glycol ether (B) is blended in an amount in a range of from 0.15 to 5% by mass, based on the total composition mass.

4. The composition of claim 1 , wherein the at least one member selected from the group consisting of the polyoxyalkylene glycol and the derivative thereof (A) is blended in an amount in a range of from 1 to 20% by mass, based on the total water soluble quenching fluid composition mass.

5. The composition of claim 1 , further comprising:
a monocarboxylic acid (C) blended therein.

6. The composition of claim 5 , wherein the monocarboxylic acid (C) has a main chain having a number of carbon atoms in a range of from 4 to 11.

7. The composition of claim 5 , wherein the monocarboxylic acid (C) is present in a range of from 0.05 to 10% by mass, based on the total composition mass.

8. The composition of claim 1 , further comprising:
an alkanolamine blended in an amount in a range of from 0.1 to 10% by mass, based on total water-soluble quenching fluid composition mass.

9. The composition of claim 1 , which has a characteristic number of seconds in a cooling curve obtained from the cooling property test defined in JIS K2242:2012, Annex A (Method B) of less than 0.1 second.

10. A concentrated liquid, obtained by concentrating the composition of claim 1 .

11. A quenching method, comprising:
quenching a member comprising a metal; and then
cooling the member with the composition of claim 1 .

12. The composition of claim 1 , wherein a content of the water is in a range of from 90.5 to 99% by mass, based on total water-soluble quenching fluid composition mass.

13. The composition of claim 1 , which has a characteristic number of seconds in a cooling curve obtained from the cooling property test defined in JIS K2242-2012, Annex A (Method B) of less than 0.1 second, and a sufficient cooling rate in a range of from 190 to 300 seconds after breaking the vapor blanket.

14. The composition of claim 5 , wherein the monocarboxylic acid (C) is only one member selected from the group consisting of caproic acid, caprylic acid, nonanoic acid, and 3,5,5-trimethylhexanoic acid.

15. The composition of claim 1 , wherein the water is present in a range of from 90.5 to 97% by mass, based on total composition mass.

16. The composition of claim 1 , wherein the at least one selected from the group consisting of a polyoxyalkylene glycol and a derivative thereof (A) is present in a range of from 2 to 20% by mass, based on total composition mass.

17. The composition of claim 1 , wherein the alkylene glycol ether (B) is present in a range of from 0.1 to 5% by mass, based on total composition mass.

18. The composition of claim 1 , wherein the molecular weight of the alkylene glycol ether (B) is in a range of from 75 to 500 g/mol.

19. The composition of claim 1 , wherein the molecular weight of the at least one selected from the group consisting of a polyoxyalkylene glycol and a derivative thereof (A) is in a range of from 12,000 to 100,000 g/mol.

20. A method of reducing a characteristic number of second in a water-soluble quenching fluid composition, the method comprising:
including both the alkylene glycol ether (B) and the at least one selected from the group consisting of a polyoxyalkylene glycol and a derivative thereof (A), in composition of claim 1 , thereby improving the characteristic number of second over water-soluble quenching fluid compositions comprising only one of (A) or (B).

Assignees

• Idemitsu Kosan Co

Inventors

• Ichitani Katsumi
• Homma Rikki

Classifications

• C08L71/02

  Polyalkylene oxides · CPC title

• C21D1/60

  Aqueous agents · CPC title

• C10M173/02 Primary

  not containing mineral or fatty oils · CPC title

• C10M2209/103

  Polyethers, i.e. containing di- or higher polyoxyalkylene groups · CPC title

• C10N2040/242

  Hot working · CPC title