KR100486625B1 - Metal working fluid comprising vegetative methyl-ester - Google Patents

Abstract

The present invention relates to a metal covalent composition prepared by adding 18.2 to 32.2% by weight of an additive to 10 to 75% by weight of vegetable oil methyl ester and 6.8 to 57.8% by weight of ion-exchanged water as lubricant base oils.

Description

Metal working fluid composition using vegetable oil methyl ester {Metal working fluid comprising vegetative methyl-Ester}

The present invention relates to an oil agent used to help metal processing in the process of cutting, grinding, drawing, pressing, etc. of metals, and more specifically, 10 to 75 wt% of vegetable oil methyl ester and 6.8 water as lubricating base oils. It relates to a metal covalent composition prepared by adding 18.2 to 32.2% by weight of an additive to -57.8% by weight.

The types of metal covalent oils with lubricating base oil are classified into emulsion type and semi-synthetic type. Metalworking is an emulsion used to assist in the processing of metals. The function of metal processing reduces friction between tool and work metal, reduces abrasion and abrasion, improves the surface characteristics, reduces adhesion to the surface and melts, removes the heat generated and prevents deformation by heat. To wash chips and residues generated during processing. As the base oil of the metal covalent oil, petroleum-based hydrocarbon lubricant base oils produced in the last process of crude oil refining process have been mainly used. However, such metal covalent sharing may cause environmental damage, and may threaten the health of people using such metal covalent sharing.

Recently, as the importance of environmental protection and the interest in health and safety for workers have increased all over the world, research on environmentally soluble lubricating base oils to replace hydrocarbon-based lubricating base oils in metalworking is already a national dimension in North America and Western Europe. In progress.

In accordance with this trend, an object of the present invention is to develop a water-soluble cutting oil composition using a vegetable oil methyl ester having excellent biodegradability and excellent lubrication with low toxicity and ecological toxicity, which can be used as an environmentally water-soluble lubricant base oil as an active ingredient of a metal covalent composition. Put it.

Vegetable oil methyl ester is less toxic and biodegradable, so soil contamination is less than that of hydrocarbon-based lubricating oil. Also UNFCCC: meurosseo get the CO ₂ at the way in the use of vegetable oil methyl ester 1 ton (Life Cycle CO ₂ 1/4 levels) via 2.2 tons reduction contributes to national competitiveness. Vegetable oil methyl ester is composed of Methyl Oleate and Methyl Linoleate as low viscosity (40 ℃, 1.9 ~ 6.0cSt), and has excellent lubricity.

CH ₃ -(CH ₂ ) ₁₄ -COO-CH ₃                                  : Methyl Palmitate

CH ₃ -(CH ₂ ) ₆ -CH ₂ -CH = CH-CH ₂ -(CH ₂ ) ₆ -COO-CH ₃                : Methyl Oleate

CH ₃ -(CH ₂ ) ₃ -CH ₂ -CH = CH-CH ₂ -CH = CH-CH ₂ -(CH ₂ ) ₆ -COO-CH ₃    : Methyl Linoleate

Vegetable oil methyl ester is a methyl ester synthesized from vegetable oil. The manufacturing process is as follows.

  <Transesterification>

CH ₂ -OCO-R CH ₂ -OH R COO-CH ₃

| |

CH-OCO-R '+ 3 CH ₃ OH → CH-OH + R 'COO-CH ₃

| Catalyst |

CH ₂ -OCO-R '' CH ₂ -OH R '' COO-CH ₃

    <Esterification>

R-COOH + CH ₃ OH → R-COO CH ₃

              catalyst

Here, R, R 'and R' 'refer to saturated or unsaturated hydrocarbons with alkyl groups.

The compositional components and composition ratios of the vegetable oil methyl esters depend on the fatty acid component and compositional ratio of the vegetable oil. The methyl esters of fatty acids shown in the following table are the components of vegetable oil methyl esters.

Fatty acids and chemical structures that can be used in vegetable oil methyl esters

Fatty acid name Carbon number and double bond number Chemical structure Caprylic C8 CH ₃ (CH ₂ ) ₆ COOH Capric C10 CH ₃ (CH ₂ ) ₈ COOH Lauric C12 CH ₃ (CH ₂ ) ₁₀ COOH Myristic C14 CH ₃ (CH ₂ ) ₁₂ COOH Palmitic C16: 0 CH ₃ (CH ₂ ) ₁₄ COOH Palmitoleic C16: 1 CH ₃ (CH ₂ ) ₅ CH = CH (CH ₂ ) ₇ COOH Stearic C18: 0 CH ₃ (CH ₂ ) ₁₆ COOH Oleic C18: 1 CH ₃ (CH ₂ ) ₇ CH = CH (CH ₂ ) ₇ COOH Linoleic C18: 2 CH ₃ (CH ₂ ) ₄ CH = CHCH ₂ CH = CH (CH ₂ ) ₇ COOH Linolenic C18: 3 CH ₃ (CH ₂ ) ₂ CH = CHCH ₂ CH = CHCH ₂ CH = CH (CH ₂ ) ₇ COOH Arachidic C20: 0 CH ₃ (CH ₂ ) ₁₈ COOH Eicosenoic C20: 1 CH ₃ (CH ₂ ) ₇ CH = CH (CH ₂ ) ₉ COOH Behenic C22: 0 CH ₃ (CH ₂ ) ₂₀ COOH Erucic C22: 1 CH ₃ (CH ₂ ) ₇ CH = CH (CH ₂ ) ₁₁ COOH

Methyl esters can be synthesized from vegetable oils and the vegetable oils that can be used therein are listed in the table below.

Vegetable fats and oils that can be used as components of methyl esters

Fatty fatty oils and fats C8: 0 C10: 0 C14: 0 C16: 0 C16: 1 C18: 0 C18: 1 C18: 2 C18: 3 C20: 0C22: 0 C20: 1C22: 1 Palm oil 5-9 4-10 44-51 13-18 7-10 - 1-4 5-8 1-3 - - - Palm Kernal oil 2-4 3-7 45-52 14-19 6-9 0-1 1-3 10-18 1-2 - 1-2 - Palm oil - - - 1-6 32-47 - 1-6 40-52 2-11 - - - Safflower oil - - - - 5.2 - 2.2 76.3 16.2 - - - Peanut oil - - - 0.5 6-11 1-2 3-6 39-66 17-38 - 5-10 - Cottonseed oil - - - 0-3 17-23 - 1-3 23-41 34-55 - - 2-3 Corn oil - - - 0-2 8-10 1-2 1-4 30-50 34-56 - - 0-2 Sunflower oil - - - - 6.0 - 4.2 18.7 69.3 0.3 1.4 - Soybean oil - - - 0.3 7-11 0-1 3-6 22-34 50-60 2-10 5-10 - Rapeseed oil - - - - 2-5 0.2 1-2 10-15 10-20 5-10 0.9 50-60 Linseed oil - - - 0.2 5-9 - 0-1 9-29 8-29 45-67 - - Mustard - - - - 3.0 - 1.5 15-60 12 5-10 - 10-60

The present invention provides a metal covalent composition formed by using 10 to 90% by weight of vegetable oil methyl ester instead of lubricating base oil alone or mixed with vegetable oil or synthetic ester, and mixed with other additives. As additives, surfactants, lubricating additives, metal corrosion inhibitors, antirust additives, pH enhancers, antifoaming agents, etc. are used. Only additives with less environmental impact are used.Nitrite, Formaldehyde, Boron, etc. Silver was not used and extreme pressure additive, preservative, etc. were excluded.

The present invention relates to a metal covalent composition prepared by adding 18.2 to 32.2% by weight of an additive to 10 to 75% by weight of vegetable oil methyl ester and 6.8 to 57.8% by weight of ion-exchanged water as lubricant base oils. Additives used in the present invention include surfactants, lubricant additives, metal corrosion inhibitors, antirust additives, pH improvers, antifoaming agents and the like.

As the additive used in the present invention, the surfactant is an ethoxylate such as lauryl alcohol or oleyl alcohol, an ethoxylate of castor oil, laurylamine, an ethoxylate of oleylamine, an amine salt of oleic acid, or an amine of tolyoyl. Salts and amine salts of erucic acid. As the additive used in the present invention, the pH improving agent includes monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, aminomethylpropanol and diglycolamine. Metal corrosion inhibitors as additives used in the present invention include benzotriazole, tolytriazole, mercaptobenzothiazole and derivatives thereof. Antirust additives used in the present invention include caprylic acid, pelagonic acid, capric acid, sebacic acid, Corfee M1, M2, Irgacor 190, Irgacor 190 Plus, and derivatives thereof. As the additive used in the present invention, the antifoaming agent includes silicone antifoaming agents such as polydimethylsiloxane, modified polydimethylsiloxane, organic silicone derivatives, and silica.

The present invention provides a mixture of vegetable oil methyl ester with at least 1 to 20% by weight of at least one selected from the group consisting of vegetable oils and synthetic esters as lubricant base oil.

The present invention provides a metal covalent composition that is formed by combining vegetable oil methyl esters alone or in combination with vegetable oils or synthetic esters instead of lubricating base oils, and blending with other additives.

Other additives include surfactants, lubricant additives, metal corrosion inhibitors, antirust additives, pH enhancers, antifoaming agents, and the like. In the present invention, only additives having a low environmental impact are used, and additives Nitrite, Formaldehyde, and Boron, which may be regulated in the future, are not used, and extreme pressure additives and preservatives are excluded. Metalworking share of the present invention can be used for iron and aluminum-based metalworking.

Example 1

To the vegetable oil methyl ester synthesized from the vegetable oil, ion-exchanged water, a surfactant, a metal corrosion inhibitor, an antirust additive, a pH enhancer, and an antifoaming agent were added to prepare a metal covalently.

Table 1. Composition of metal covalent

Raw material name S-1 S-2 S-3 S-4 S-5 Vegetable oil methyl ester 90.0 75.0 60.0 50.0 40.0 Ion exchange water - 6.8 17.8 23.8 31.8 Surfactants 5.8 10.0 12.0 15.0 18.0 pH enhancer 3.0 5.5 7.5 8.5 7.5 Metal corrosion inhibitor 0.1 0.1 0.1 0.1 0.1 Antirust additive 1.0 2.5 2.5 2.5 2.5 Antifoam 0.1 0.1 0.1 0.1 0.1

Raw material name S-6 S-7 S-8 S-9 S-10 Vegetable oil methyl ester 35.0 30.0 27.5 25.0 10.0 Ion exchange water 35.8 37.8 37.8 38.8 57.8 Surfactants 19.0 22.0 24.0 25.5 22.0 pH enhancer 7.5 7.5 8.5 8.5 7.5 Metal corrosion inhibitor 0.1 0.1 0.1 0.1 0.1 Antirust additive 2.5 2.5 2.5 2.5 2.5 Antifoam 0.1 0.1 0.1 0.1 0.1

Example 2

To the vegetable oil methyl ester synthesized from the vegetable oil, rapeseed oil, ion-exchanged water, a surfactant, a metal corrosion inhibitor, a rust preventive additive, a pH enhancer, and an antifoaming agent were added as vegetable oils to prepare metal covalently.

Table 2. Composition of metal covalent

Raw material name S-11 S-12 S-13 S-14 S-15 vegetable oil 9.0 15.0 10.0 5.0 - Vegetable oil methyl ester 25.0 19.0 24.0 29.0 34.0 Ion exchange water 40.9 40.9 40.9 40.9 40.9 Surfactants 15.0 15.0 15.0 15.0 15.0 pH enhancer 7.5 7.5 7.5 7.5 7.5 Metal corrosion inhibitor 0.5 0.5 0.5 0.5 0.5 Antirust additive 2.0 2.0 2.0 2.0 2.0 Antifoam 0.1 0.1 0.1 0.1 0.1

Example 3

To the vegetable oil methyl ester synthesized from vegetable oil, ricinoleic acid condensate, ion-exchanged water, surfactant, metal corrosion inhibitor, rust preventive additive, pH enhancer, and antifoaming agent were added to prepare metal covalent.

Table 3. Composition of metal covalent

Raw material name S-16 S-17 S-18 S-19 S-20 Synthetic ester 3.0 15.0 10.0 9.0 5.0 Vegetable oil methyl ester 50.0 38.0 43.0 46.0 49.0 Ion exchange water 17.3 17.3 17.3 15.3 16.3 Surfactants 14.5 14.5 14.5 14.5 14.5 pH enhancer 13.0 13.0 13.0 13.0 13.0 Metal corrosion inhibitor 0.1 0.1 0.1 0.1 0.1 Antirust additive 2.0 2.0 2.0 2.0 2.0 Antifoam 0.1 0.1 0.1 0.1 0.1

Example 4

Seed oil as vegetable oil and ricinoleic acid condensate, ion-exchanged water, surfactant, metal corrosion inhibitor, rust preventive additive, pH enhancer and antifoam were added as a vegetable oil to prepare metal covalently.

Table 4. Composition of metal covalent

Raw material name S-21 S-22 S-23 S-24 S-25 vegetable oil 6.0 7.0 7.0 3.0 4.5 Synthetic ester 3.0 7.0 5.0 6.0 4.5 Vegetable oil methyl ester 25.0 20.0 22.0 25.0 25.0 Ion exchange water 40.9 40.9 40.9 40.9 40.9 Surfactants 15.0 15.0 15.0 15.0 15.0 pH enhancer 7.5 7.5 7.5 7.5 7.5 Metal corrosion inhibitor 0.5 0.5 0.5 0.5 0.5 Antirust additive 2.0 2.0 2.0 2.0 2.0 Antifoam 0.1 0.1 0.1 0.1 0.1

Experimental Example 1

The properties of the metal covalently prepared in Examples 1 to 4 are shown in Tables 5-8.

Table 5. Properties of Metal Couplings

Analysis item S-1 S-2 S-3 S-4 S-5 Exterior Liquid Yellow translucent Yellow translucent Yellow translucent Yellow translucent Yellow translucent diluent Light yellow opaque Light yellow opaque Light yellow opaque Light yellow opaque Light yellow translucent pH (10%) 8.9 9.2 9.5 9.7 9.5 Antirust (brix 3%) 48 hours call 48 hours call 48 hours call 48 hours call 48 hours call Surface tension (3%) 31.5 31.7 32.0 32.7 33.5 Coefficient of friction (3%) 0.108 0.110 0.115 0.120 0.124 Non-ferrous discoloration test (3%) Al Discoloration Discoloration Discoloration Discoloration Discoloration Cu Discoloration Discoloration Discoloration Discoloration Discoloration

Analysis item S-6 S-7 S-8 S-9 S-10 Exterior Liquid Tan translucent Tan translucent Tan translucent Tan translucent Tan translucent diluent Light white transparent Light white transparent Light white transparent Light white transparent Light white transparent pH (10%) 9.5 9.5 9.7 9.7 9.5 Antirust (brix 3%) 48 hours call 48 hours call 48 hours call 48 hours call 48 hours call Surface tension (3%) 29.2 29.0 29.8 30.7 32.5 Coefficient of friction (3%) 0.124 0.128 0.130 0.131 0.135 Non-ferrous discoloration test (3%) Al Discoloration Discoloration Discoloration Discoloration Discoloration Cu Discoloration Discoloration Discoloration Discoloration Discoloration

Table 6. Properties of Metal Covalent

Analysis item S-11 S-12 S-13 S-14 S-15 Exterior Liquid Maroon translucent Maroon translucent Maroon translucent Maroon translucent Maroon translucent diluent Off White Transparent Off White Transparent Off White Transparent Off White Transparent Off White Transparent pH (10%) 9.5 9.4 9.6 9.5 9.6 Antirust (brix 3%) 48 hours call 48 hours call 48 hours call 48 hours call 48 hours call Surface tension (3%) 26.1 25.5 25.7 26.0 26.1 Coefficient of friction (3%) 0.119 0.112 0.114 0.117 0.118 Non-ferrous discoloration test (3%) Al Discoloration Discoloration Discoloration Discoloration Discoloration Cu Discoloration Discoloration Discoloration Discoloration Discoloration

Table 7. Properties of Metal Covalent

Analysis item S-16 S-17 S-18 S-19 S-20 Exterior Liquid Maroon translucent Maroon translucent Maroon translucent Maroon translucent Maroon translucent diluent Off White Transparent Off White Transparent Off White Transparent Off White Transparent Off White Transparent pH (10%) 9.9 9.9 9.9 9.9 9.9 Antirust (brix 3%) 48 hours call 48 hours call 48 hours call 48 hours call 48 hours call Surface tension (3%) 26.1 25.5 25.7 26.0 26.1 Coefficient of friction (3%) 0.119 0.112 0.114 0.117 0.118 Non-ferrous discoloration test (3%) Al Discoloration Discoloration Discoloration Discoloration Discoloration Cu Discoloration Discoloration Discoloration Discoloration Discoloration

Table 8. Properties of Metal Covalent

Analysis item S-21 S-22 S-23 S-24 S-25 Exterior Liquid Tan translucent Tan translucent Tan translucent Tan translucent Tan translucent diluent Light white transparent Light white transparent Light white transparent Light white transparent Light white transparent pH (10%) 9.4 9.5 9.5 9.5 9.5 Antirust (brix 3%) 48 hours call 48 hours call 48 hours call 48 hours call 48 hours call Surface tension (3%) 29.2 27.8 28.3 28.9 29.2 Coefficient of friction (3%) 0.118 0.112 0.115 0.117 0.118 Non-ferrous discoloration test (3%) Al Discoloration Discoloration Discoloration Discoloration Discoloration Cu Discoloration Discoloration Discoloration Discoloration Discoloration

The present invention relates to a metal-covalent composition using a vegetable oil methyl ester having excellent biodegradability and excellent lubrication and low toxicity and ecological toxicity, which can be used as an environmentally water-soluble lubricant base oil as an active ingredient of the metal-covalent composition.

Claims (3)

A metal covalent composition comprising 10 to 75% by weight of vegetable oil methyl ester and 6.8 to 57.8% by weight of ion-exchanged water as additives. The method of claim 1, wherein the additive is an ethoxylate such as lauryl alcohol or oleyl alcohol, an ethoxylate of castor oil, laurylamine, an ethoxylate of oleylamine, an amine salt of oleic acid, or an amine salt of tolyoyl. Or surfactants selected from amine salts of erucic acid; Ph enhancer selected from monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, aminomethylpropanol or diglycolamine; Metal corrosion inhibitors selected from benzotriazole, tolytriazole, mercaptobenzothiazole or derivatives thereof; Caprylic Acid, Pelagonate, Capric Acid, Sebacic Acid, Cofree M1, Cofree M2, Irgacor 190, Irgacor 190 Plus, or Antirust additive selected from these derivatives; And a defoaming agent selected from a silicone-based defoamer of polydimethylsiloxane, modified polydimethylsiloxane, organic silicone derivative, or silica. The metal covalent composition of claim 1, wherein the lubricating base oil is further mixed with vegetable oil methyl ester by at least 1 to 20% by weight of at least one selected from the group consisting of vegetable oil and synthetic ester.