Water based semi-synthetic metal working fluid composition containing an alkyl alcohol amine

Patent metadata

Field	Value
Publication number	US-12410376-B2
Application number	US-202218723636-A
Country	US
Kind code	B2
Filing date	Mar 31, 2022
Priority date	Mar 31, 2022
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

The current invention relates to a novel class of alkyl alcohol amines where the amine is a primary amine. Embodiments relate to a method of controlling microbial growth in metal working fluids, comprising adding such an alkyl alcohol amine to the metal working fluid. Other embodiments relate to semi-synthetic metal working fluid compositions which include the microbial growth control agent comprising this particular class of alkyl alcohol amines.

First claim

The invention claimed is:

1. A semi-synthetic metal working fluid, comprising:
a. at least one base oil;
b. at least one microbial growth control agent comprising monoisobutanolamine;
c. one or more organic acid;
d. one or more emulsifiers;
e. one or more concentrate additives; and
f. water.

2. The semi-synthetic metal working fluid of claim 1 , wherein the microbial growth control agent further comprises another amine.

3. The semi-synthetic metal working fluid of claim 1 , wherein the base oil is selected from naphthenic oils, paraffinic oils, ester oils and mixtures thereof.

4. The semi-synthetic metal working fluid of claim 1 , wherein the emulsifier is selected from C16-18 alcohols which have been ethoxylated or propoxylated, ethoxylated C12-C15 alcohols, sodium alkane sulfonate and alky ether carboxylates and mixtures thereof.

5. The semi-synthetic metal working fluid of claim 1 , wherein the organic acid is selected from ethylhexoic acid, azelaic acid, tall oil fatty acid, 12-hydoxyl-(cis)-9-octadecenoic acid, 9-octadecenoic acid, sebacic acid, and mixtures thereof.

6. The semi-synthetic metal working fluid of claim 1 , wherein the microbial growth control agent is present in an amount of from 6 to 15 percent by weight of the semi-synthetic metal working fluid.

7. The semi-synthetic metal working fluid of claim 1 , wherein the base oil is present in an amount of from 10 to 45 percent by weight of the semi-synthetic metal working fluid.

8. The semi-synthetic metal working fluid of claim 1 , wherein the emulsifier is present in an amount of from 5 to 20 percent by weight of the semi-synthetic metal working fluid.

9. The semi-synthetic metal working fluid of claim 1 , wherein the organic acid is present in an amount of from 3 to 10 percent by weight of the semi-synthetic metal working fluid.

10. The semi-synthetic metal working fluid of claim 1 , wherein the water is present in an amount of from 20 to 60 percent by weight of the semi-synthetic metal working fluid.

11. The semi-synthetic metal working fluid of claim 2 wherein the additional amine comprises 2-amino-1-butanol.

12. The semi-synthetic metal working fluid of claim 1 wherein the concentrate additive is selected from the group consisting of diethylene glycol butyl ether, ethylene glycol monobutyl ether, and propylene glycol butyl ether.

Assignees

• Dow Global Technologies Llc

Inventors

• Belowich Matthew E
• Jiang Qi
• Zhao Chao
• Chen Xue
• Zhao Yong

Classifications

• C10N2030/16

  Antiseptic; {(micro)} biocidal {or bactericidal} · CPC title

• C10N2030/12

  Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives · CPC title

• C10M2215/042

  containing hydroxy groups; Alkoxylated derivatives thereof · CPC title

• C10M2207/2805

  used as base material · CPC title

• C10M2205/16

  Paraffin waxes; Petrolatum, e.g. slack wax · CPC title