Water-based metal working oil agent

a technology of metalworking oil and water, which is applied in the direction of additives, lubricants, petroleum industry, etc., can solve the problems that amine odor can sometimes have an adverse influence on human bodies and working environments, and achieve excellent rust resistance and less odor

Inactive Publication Date: 2015-12-31
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]According to the above aspect of the invention, since alkanolamine having a specific structure is contained as the amine component and the molar ratio of the amine component having a molecular weight of 90 or less is defined as being equal to or less than a specific ratio, the water-based metalworking fluid that exhibits an excellent rust resistance and causes less odor to be more environmentally friendly and less harmful to human bodies can be provided.

Problems solved by technology

However, when an amine-based rust resistant component (e.g., alkanolamine) is contained, odor is derived from amines to occasionally have an adverse influence on human bodies and working environments.

Method used

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Examples

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examples

[0044]Next, the invention will be described in more detail with reference to Examples. However, the invention is not limited at all by the Examples.

examples 1 to 4

, Comparatives 1 to 3

[0045]A water-based metalworking fluid (stock solution) according to each of Examples 1 to 4 and Comparatives 1 to 3 was prepared by blending components shown in Table 1. After the prepared stock solution was diluted with water to a certain concentration, Examples 1 to 4 and Comparatives 1 to 3 each were evaluated in terms of the following characteristics. Evaluation results are shown in Table 1.

(1) Rust Resistance (in Accordance with DIN51360-02-A)

[0046]Test for rust resistance was conducted at room temperature for two hours on diluted solutions prepared by diluting the stock solution with tap water to the concentration of 1.0 mass %, 1.1 mass %, 1.2 mass %, 1.3 mass %, 1.4 mass %, 1.5 mass % and 2.0 mass % respectively. The minimum concentration at which a rust value had become 0 was set as limit concentration (mass %) in terms of rust resistance.

(2) Odor

[0047]An aqueous solution was prepared by diluting the stock solution with an ion-exchange water so that th...

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Abstract

A water-based metalworking fluid contains a component (A) of alkanolamine represented by a formula (1) below as an amine component and a component (B) of alkanolamine represented by a formula (2) below as an amine component, a molar ratio of an amine component having a molecular weight of 90 or less to a total of the amine components (the amine component having a molecular weight of 90 or less / the total of the amine components) is 0.67 or less.In the formula, R1 represents hydrogen or an alkyl group having 1 to 3 carbon atoms; n is 1 to 3; and R1 may be mutually the same or different.In the formula: R2 represents an alkyl group having 1 to 10 carbon atoms; and Z1 and Z2 each independently represent an alkylene group having 2 to 8 carbon atoms.

Description

TECHNICAL FIELD[0001]The present invention relates to a water-based metalworking fluid used in metalworking such as cutting or grinding.BACKGROUND ART[0002]A metalworking fluid used in metalworking is categorized into an oil-type (oil-based) fluid and a water-type (water-based) fluid, the latter of which is more frequently used because such a water-based fluid is excellent in cooling capabilities and infiltration capabilities and free from a risk of causing a fire. Such a water-based metalworking fluid, which is to be diluted with water in use, is required to have rust resistance. As such a rust resistant component, it is generally known to use alkanolamine such as monoethanolamine, diethanolamine and triethanolamine (see Patent Literature 1).CITATION LISTPatent Literature(s)[0003]Patent Literature 1: JP-A-11-209774SUMMARY OF THE INVENTIONProblem(s) to be Solved by the Invention[0004]The water-based metalworking fluid generally exhibits more favorable rust resistance at a larger con...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M133/08
CPCC10M173/02C10M2215/042C10M2217/041C10M2219/09C10M2219/104C10M2229/02C10N2230/12C10N2230/64C10N2240/401C10N2240/402C10M133/08C10N2030/12C10N2030/64C10N2040/22C10N2040/24
Inventor KAWASAKI, HIROSHITAKAGI, FUMIAKIJIBIKI, YOSUKE
Owner IDEMITSU KOSAN CO LTD
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