JPS6121513B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an abrasive used for grinding work in metal processing in steel, machinery, etc. [However, R ₁ , R ₂ , and R ₃ are hydrogen atoms or alkyl groups having 3 to 4 carbon atoms (However, R ₁ , R ₂ , and R ₃ are never hydrogen atoms at the same time.) n is 1 and 2. The integer X represents a metal atom NH ₄ group such as Na or K ₁ and an amine-neutralized N-ammonium group. ] The present invention relates to a novel and excellent abrasive characterized by containing an alkylphenoxyalkylene carboxylic acid salt represented by (hereinafter referred to as the compound of the present invention). The performance generally required for an abrasive is as follows:
The lubrication action cools the heat generated, improves the precision of the finished surface, prevents the grinding wheel from becoming crushed or spilled, extends the life of the grinding wheel, and further improves the grindability of metals and the rust prevention and corrosion resistance of processed metals. Conditions are required, such as improved defoaming properties of the liquid used, no impact on non-ferrous metals, and good waste liquid treatment. Conventionally, nitrites have been mainly used as abrasives. Nitrite has good properties in terms of grindability, rust prevention, antifoaming properties, etc., but according to recent publications, it has drawbacks such as carcinogenicity due to generated nitrosamines and difficulty in waste liquid treatment. In addition, condensed phosphates, borates, synthetic fatty acids, etc. are used in place of nitrites, but these also have problems such as rust prevention, antiseptic properties, antifoaming properties, and odor, and the grinding industry Such requests were not fully satisfied. The present inventors have discovered the compound of the present invention as a result of research into compounds that meet the above-mentioned conditions as abrasives, and have arrived at the present invention. In the course of the research of the present invention, inorganic compounds such as silicates, condensed phosphates, and borates, and organic compounds such as phosphate ester salts, polybasic acid salts, vegetable oil-based fatty acid salts, and synthetic fatty acid salts were used as abrasives. We evaluated their performance (rust prevention and antifoaming properties), but most of them had poor rust prevention and foamed easily, so none were usable. However, among the synthetic carboxylic acid series, the compound used in the present invention, the alkylphenoxyalkylene carboxylate, has been found to have excellent grinding properties, rust prevention properties, and antifoaming properties and can be used as an abrasive. The present invention was completed based on these findings, and is a grinding agent characterized by containing an alkylphenoxyalkylene carboxylate. The main compound of the present invention can be easily obtained by a known method such as reacting a phenolate of an alkylphenol with a monohalogen alkylene carboxylate. Examples of the alkylphenol used include propylphenol, isopropylphenol, diisopropylphenol, tripropylphenol, butylphenol, dibutylphenol, and the like. For the purposes of the present invention, butylphenol having 4 carbon atoms is most preferred, as the larger the number of carbon atoms in the alkyl group, the greater the foaming and the lower the grindability. Examples of monohalogen alkylene carboxylic acid salts that can be used include monochloroacetic acid, monochloropropionic acid, and monopromoacetic acid, but it is preferable to use monochloroacetic acid from the viewpoint of the purpose of the present invention and economic efficiency. Compounds used to generate salts in the general formula include aqueous solutions such as caustic soda, caustic potash, and lithium hydroxide, and inorganic alkalis such as aqueous ammonia, but there are also amine addition salts. Examples include alkanolamines, alkylamines having an alkyl group having 4 or less carbon atoms, alkylalkanolamines thereof, cyclic amines, polyalkylene polyamines, and the like. From an economic standpoint, it is preferable to use caustic soda, caustic potash, or alkanolamine. Although the main feature of the present invention is to use an alkylphenoxyalkylene carboxylate as an abrasive, the effect may be further improved by using a sputtered amine addition salt. The compound used in the present invention usually exhibits an effect at a concentration of 0.1 to 20%, but a more preferable concentration is 0.3 to 1.0%.
% range. The concentration of the compound of the invention is 0.1%
If it is less than 20%, the rust prevention property will decrease, and if it is more than 20%, performance such as grindability and antifoaming property will tend to decrease, which is not preferable. It goes without saying that in order to give the abrasive of the present invention properties suitable for various processing, suitable amounts of surfactants, preservatives, etc. can be added and adjusted. Hereinafter, the present invention will be specifically explained by comparing the effects of conventionally used nitrite, P-tert-butylbenzoate, and the compound of the present invention, and its performance will be demonstrated. Indicates that there is a Example 1

[Table] The mixing ratio of each of the above samples was adjusted to 50%. Example 2

【table】 Measurement condition; Grinding machine Cylindrical grinding machine Whetstone WA60K Rotation speed 1500r.p.m Work material SCR22 Depth of cut 1.5μ/rev.

【table】 Condition; Grinding machine Roll grinding machine Whetstone Diamond whetstone Work material S45C Depth of cut 5/1000mm Example 3

[Table] The compounds used in the comparative examples and examples in Examples 4 to 7 below were adjusted by 50% each. Example 4

[Table] Collect 2 sample solutions in a cylindrical container, flow rate 10/min
It is circulated by flowing it down from a height of 62cm above the liquid level with a circulation rate of . The foam height at that time was measured. Example 5

【table】 Example 6

[Table] Prepare 50 ml of the sample solution diluted with 7/1000 sterile water in a pre-sterilized Erlenmeyer flask with cotton. 1 ml of bacterial solution was added to this, and the bacteria were measured at 35-37°C at the following intervals.

[Table] Addition Measurement Addition Measurement Addition Addition Measurement Addition Measurement Addition Addition Addition Addition Addition Addition Addition Addition Measurement Addition Measurement Addition Measurement Addition Measurement Addition Addition Addition Addition Addition For the bacterial solution, add soluble type rotting liquid to the bouillon medium using a platinum wire and culture at 35 to 37℃ for 24 hours. did.
(Use a bacterial count ^of 10 9 ^{to 10} ) A; Number of viable bacteria (cells/ml) 10 ² or less B 10 2 to 10 ³ C 10 3 to 10 ⁴ D 10 ^{4 to} 10 ⁵ E 10 ⁵ or more examples 7

[Table] Lower the pH to 4 or less with ferric chloride and neutralize lime (PH
7-8), form a block with a polymer flocculant, and then filter. The filtrate was measured according to JIS K-0102, -13, -16.

Claims (1)

[Claims] 1. The following general formula [However, R ₁ , R ₂ , and R ₃ are hydrogen atoms or alkyl groups having 3 to 4 carbon atoms (However, R ₁ , R ₂ , and R ₃ are never hydrogen atoms at the same time.) n is an integer of 1 and 2. , X represents Na, K, NH ₄ group, or amine-neutralized N-ammonium group.