WO2019182168A1 - Biodegradable multifunctional anti-corrosive lubricant - Google Patents

Abstract

The present invention relates to a biodegradable multifunctional anti-corrosive lubricant and, particularly, to a biodegradable multifunctional anti-corrosive lubricant comprising: a) a C16-22 monoacylglycerin; b) a C16-22 diacylglycerin; c) a C16-22 triacylglycerin; d) an alkyl ester obtained by esterification of a C16-22 fatty acid and an alcohol; and e) a biodegradable solvent. According to the present invention, provided is a lubricant having more remarkably excellent anti-corrosiveness, permeability, lubricity, damp proofness and washability than a conventional product.

Description

Biodegradable Multifunctional Antirust Lubricant

The present invention relates to a biodegradable multifunctional rust preventive lubricant, and more particularly, to a lubricant which is remarkably excellent in rust resistance, permeability, lubricity, moisture resistance, and washability as compared to existing products.

The contents described below merely provide background information related to the present invention and do not constitute a prior art.

Multi-functional anti-rust lubricant forms a thin oil film on the surface of machine parts to ensure high lubricity, blocks oxygen, moisture and salts that cause rust and corrosion, and penetrates into areas already corroded to prevent further corrosion. In addition, it is intended to have a variety of functions for cleaning the impurities and oil / grease caused by rust or corrosion already generated.

Conventional rust preventive lubricating oil is not only a high hazard to the human body but also a degradable component in the natural state acting as a major factor of environmental pollution is urgently developed for this.

The technical problem to be achieved by the present invention is to solve the conventional problems with the rust-preventive lubricating oil, using a raw material capable of 100% biodegradation compared to the conventional multi-functional rust-proof lubricant, without the use of additives, lubricity, rust resistance, moisture resistance, permeability, and It is to provide a lubricant which is remarkably excellent in washability.

In another aspect, the present invention is to provide a lubricant that is harmless to the human body and can be biodegradable in a natural state.

Biodegradable multi-functional anti-rust lubricant according to the present invention for solving this problem is

a) monoacylglycerin having 16 to 22 carbon atoms;

b) diacylglycerin having 16 to 22 carbon atoms;

c) triacylglycerin having 16 to 22 carbon atoms;

d) alkyl esters in which fatty acids having 16 to 22 carbon atoms and alcohols are esterified; And

e) biodegradable solvents.

Preferably the biodegradable multi-functional anti-rust lubricant

a) 1 to 50% by weight of monoacylglycerin having 16 to 22 carbon atoms;

b) 1 to 50% by weight of diacylglycerin having 16 to 22 carbon atoms;

c) 1 to 90% by weight of triacylglycerin having 16 to 22 carbon atoms;

d) 1 to 80% by weight of alkyl esters in which fatty acids having 16 to 22 carbon atoms and alcohols are esterified; And

e) 1 to 40% by weight of biodegradable solvent.

The biodegradable solvent may be selected from one or more selected from the group consisting of methanol, ethanol and butanol.

Preferably the diacylglycerin / monoacylglycerin is 1.2 to 2 by weight.

Preferably the total content of monoacylglycerin and diacylglycerin is 15 to 70% by weight.

Preferably, the biodegradable multifunctional rust preventive lubricant may further comprise at least one additive selected from the group consisting of surfactants, pH improvers, corrosion inhibitors, rust preventive agents, antifoaming agents, preservatives, antioxidants, pour point lowering agents.

The biodegradable multifunctional rust preventive lubricant according to the present invention is remarkably excellent in rust resistance, lubricity, emulsification, washability, and permeability compared to conventional lubricants without the use of additives.

In particular, the diacylglycerin and monoacylglycerin included in this lubricant are surfactants having polar properties, and the hydrophilic part is chemically attached to the metal surface, and the lipophilic part is attached to vegetable oil and fatty acid alkyl ester, which causes corrosion. As moisture does not penetrate the metal surface, it has an antirust effect.

At the same time, because of these properties, the present lubricant shows the best lubrication properties compared to other products.

At the same time, it shows excellent emulsification by the surface-active properties of diacylglycerin and monoacylglycerin contained in the present lubricant.

At the same time, it shows excellent washability with excellent solvency effect of fatty acid alkyl esters and biodegradable solvents. Its excellent dissolution property dissolves hydrophilic diacylglycerol and monoacylglycerin to lower the viscosity and so penetrates the metal surface.

In addition, the lubricating oil is all environmentally friendly and does not contain any harmful substances to human body to protect the health of workers or users, and after a certain time can be biodegraded to prevent environmental pollution.

1 is a comparison result of the oil film formation for the biodegradable multi-functional anti-rust lubricant of the embodiment of the present invention and the existing product.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

Biodegradable multifunctional anti-rust lubricant according to the present invention

a) monoacylglycerin having 16 to 22 carbon atoms;

b) diacylglycerin having 16 to 22 carbon atoms;

c) triacylglycerin having 16 to 22 carbon atoms;

d) alkyl esters in which fatty acids having 16 to 22 carbon atoms and alcohols are esterified;

e) biodegradable solvents.

Each component of the biodegradable multifunctional rust preventive lubricant may be synthesized, or may be prepared through vegetable and animal oils.

In particular, the lubricant of the present invention uses those having 16 to 22 carbon atoms, all contained in monoacylglycerin, diacylglycerin, triacylglycerin, and alkyl esters. In this case, it is possible to provide a lubricant which is remarkably excellent in rust resistance, lubrication properties, emulsification properties and antibacterial properties.

Specific examples of 16 to 22 carbon atoms may be derived from Palmitic acid, Palmitoleic acid, Stearic acid, Oleic acid, Linoleic acid, Linolenic acid, Arachidic acid, Eicosenoic acid, Behenic acid, Erucic acid.

Preferably the biodegradable multi-functional anti-rust lubricant

a) 1 to 50% by weight of monoacylglycerin having 16 to 22 carbon atoms;

b) 1 to 50% by weight of diacylglycerin having 16 to 22 carbon atoms;

c) 1 to 90% by weight of triacylglycerin having 16 to 22 carbon atoms;

d) 1 to 80% by weight of alkyl esters in which fatty acids having 16 to 22 carbon atoms and alcohols are esterified

e) 1 to 40% by weight of biodegradable solvent.

If it is in the above range can be satisfied at the same time rust resistance, lubrication properties, emulsification and antimicrobial of the lubricant.

The alcohol may be at least one selected from the group consisting of methanol, ethanol and butanol.

Preferably the diacylglycerin / monoacylglycerin is 1.2 to 2 by weight. Preferably the total content of monoacylglycerin and diacylglycerin is 15 to 70% by weight. In this case, in addition to the excellent anti-rusting properties, lubrication properties, emulsification and antimicrobial properties of the lubricant, it is excellent in anti-foaming properties can significantly reduce the use of the antifoaming agent or may not use the antifoaming agent.

Preferably, the biodegradable multifunctional rust preventive lubricant may further include at least one additive selected from the group consisting of surfactants, pH enhancers, corrosion inhibitors, rust inhibitors, antifoams, preservatives, antioxidants, and pour point lowering agents. The amount of the additive may be appropriately adjusted by those skilled in the art according to the application, and specific examples may include the additive in a range of 0.1 to 20 parts by weight based on 100 parts by weight of the total of the components a) to e) independently.

Biodegradable multi-functional anti-corrosive lubricant according to the present invention because it is excellent in lubrication properties, emulsification, antimicrobial, anti-rusting and anti-foaming properties by itself can significantly reduce or not use the additives as compared to conventional lubricants, accordingly It solves the difficulties caused by the use of the source, there is an advantage that can be manufactured at a significantly low cost.

In addition, the diacylglycerol and monoacylglycerin included in the lubricating oil are surfactants having polar characteristics, so that the hydrophilic portion is chemically attached to the metal surface, and the lipophilic portion is attached to the vegetable oil and the fatty acid alkyl ester, thereby causing corrosion. Since moisture does not penetrate the metal surface, it has an antirust effect. At the same time, because of these properties, the present lubricant shows the best lubrication properties compared to other products. At the same time, it shows excellent emulsification by the surface-active properties of diacylglycerin and monoacylglycerin contained in the present lubricant. At the same time, it shows excellent washability with excellent solvency effect of fatty acid alkyl esters and biodegradable solvents, and it has a very high effect of penetrating metal surface by dissolving hydrophilic diacylglycerin and monoacylglycerin with excellent dissolution properties.

In addition, the lubricating oil is all environmentally friendly and does not contain any harmful substances to human body to protect the health of workers or users, and after a certain time can be biodegraded to prevent environmental pollution.

Accordingly, this lubricant can be used in the FOOD grade industry (manufacturing machinery and equipment in the food, pharmaceutical, medical and cosmetic fields); Energy industry group (solar, wind, tidal, hydropower machinery and equipment); It can be usefully applied to home, leisure, sports field machinery and equipment, especially food and beverage manufacturing equipment and equipment, pharmaceutical manufacturing equipment and equipment, medical manufacturing equipment and cosmetic manufacturing equipment, where it is important to fundamentally block human harmful substances It can apply especially effectively.

Hereinafter, preferred examples are provided to help understanding of the present invention, but the following examples are merely to illustrate the present invention, and the scope of the present invention is not limited to the following examples.

Example 1

95% by weight of canola vegetable oil and 5% by weight of ethanol are mixed and partially esterified to produce 49 parts by weight of canola triacylglycerin, 20 parts by weight of canola diacylglycerin, 5 parts by weight of canola monoacylglycerin, and 20 parts by weight of canola fatty acid alkester. It was. To this, 5 parts by weight of ethanol and 1 part by weight of vegetable antioxidant were further mixed to produce a 100% biodegradable multifunctional antirust lubricant.

Example 2: Performance Experiment of Biodegradable Multifunctional Antirust Lubricant

Experimental results of measuring 100% biodegradable multi-functional anti-rust lubricating oil, rust incidence and copper plate corrosion of the existing product is shown in Table 1 below. Rust incidence shows rust resistance in the wet state (49 ° C, 192 hours). Existing products are products produced using 100% petrochemical products, the present invention is a product produced according to Example 1. Existing products are 100% petrochemical products that are harmful to the human body, the multifunctional rust preventive lubricant of the present invention is a product derived from the plant is harmless to the human body.

	Existing product	The present invention	Test Methods
Petrochemicals%	100	0
Rust occurrence (wetting: antirust)%	0	0	KS M 2019: 2014
Copper plate corrosion	Grade 1Slight Discoloration	Grade 1Slight Discoloration	KS M ISO2160: 2012

Copper plate corrosion: 1 (slight discoloration)-4 (corrosion)

As shown in Table 1, it can be seen that the lubricating oil of the present invention shows a very excellent anti-rusting ability even though it is composed of only vegetable components harmless to the human body.

Example 3: Oil film formation experiment of biodegradable multifunctional antirust lubricant

The biodegradation multifunctional rust preventive lubricant of Example 1 of the present invention and an oil film forming comparative experiment of the conventional product are shown in FIG. 1. In Figure 1 A is the result of the existing product, B is the result of Example 1 of the present invention. As shown in FIG. 1, the ink is sprayed onto the metal plate to form a film, and when a drop of lubricating oil (transparent) is dropped thereon, the existing product is lubricating oil is not penetrated into the ink water, but is spread on the water, the lubricant according to the present invention is ink water After passing through the metal surface, a small oil film was formed on the metal surface, and as time passed, the oil film area was widened.

Example 4: Other physical property test of biodegradable multifunctional rust preventive lubricant

Experimental results and results of other physical properties of the biodegradable multifunctional rustproof lubricant of Example 1 of the present invention are shown in Table 2 below.

Test item	Unit	Test result	Test method
Total acid value	mg KOH / g	<0.5	ASTM D664
Flashing point	℃	216	ASTMD92-12b
Pour Point	℃	-15	KSM ISO 3016
Viscosity (40 ℃)	mm 2 / S	17.84	KSM ISO 3014
Biodegradability (24 days)	%	> 88.6	OECD 301
Toxicity	LC 50, mg / L	> 100 (None)	OECD 203

 As shown in Table 2, the lubricating oil according to the present invention has suitable physical properties for use as lubricating oil, and has excellent biodegradability and is harmless to the human body.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

The biodegradable multifunctional rust preventive lubricant according to the present invention is remarkably excellent in rust resistance, lubricity, emulsification, washability, and permeability compared to conventional lubricants without the use of additives.

In particular, the diacylglycerin and monoacylglycerin included in this lubricant are surfactants having polar properties, and the hydrophilic part is chemically attached to the metal surface, and the lipophilic part is attached to vegetable oil and fatty acid alkyl ester, which causes corrosion. As moisture does not penetrate the metal surface, it has an antirust effect.

At the same time, because of these properties, the present lubricant shows the best lubrication properties compared to other products.

At the same time, it shows excellent emulsification properties due to the surfactant properties of diacylglycerin and monoacylglycerin contained in the present lubricant.

At the same time, it shows excellent washability with excellent solvency effect of fatty acid alkyl esters and biodegradable solvents. Its excellent dissolution property dissolves hydrophilic diacylglycerol and monoacylglycerin to lower the viscosity and so penetrates the metal surface.

In addition, the lubricating oil is all environmentally friendly and does not contain any harmful substances to human body to protect the health of workers or users, and after a certain time can be biodegraded to prevent environmental pollution.

Claims (6)

1. a) monoacylglycerin having 16 to 22 carbon atoms;

   b) diacylglycerin having 16 to 22 carbon atoms;

   c) triacylglycerin having 16 to 22 carbon atoms;

   d) alkyl esters in which fatty acids having 16 to 22 carbon atoms and alcohols are esterified; And

   e) Biodegradable multifunctional antirust lubricant comprising biodegradable solvent.
2. The method of claim 1,

   a) 1 to 50% by weight of monoacylglycerin having 16 to 22 carbon atoms;

   b) 1 to 50% by weight of diacylglycerin having 16 to 22 carbon atoms;

   c) 1 to 90% by weight of triacylglycerin having 16 to 22 carbon atoms;

   d) 1 to 80% by weight of alkyl esters in which fatty acids having 16 to 22 carbon atoms and alcohols are esterified; And

   e) A biodegradable multifunctional rust preventive lubricant comprising 1 to 40% by weight biodegradable solvent.
3. The method of claim 1,

   The biodegradable solvent is biodegradable multi-functional rust preventive lubricant selected from the group consisting of methanol, ethanol, butanol.
4. The method of claim 1,

   Diacylglycerin / monoacylglycerin is a biodegradable multifunctional rust preventive lubricant having a weight ratio of 1.2 to 2.
5. The method of claim 2,

   A biodegradable multifunctional rust preventing lubricating oil having a total content of monoacylglycerin and diacylglycerin of 15 to 70% by weight.
6. The method of claim 1,

   A biodegradable multifunctional rust preventive lubricant further comprising at least one additive selected from the group consisting of surfactants, pH enhancers, corrosion inhibitors, rust inhibitors, antifoams, preservatives, antioxidants, and pour point depressants.

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