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Lubricant spray polymers

a technology of lubricant spray and polymer, which is applied in the field of copolymer, can solve the problems of reducing engine efficiency and lifetime, prone to corrosion, and rust produced by ferrous metal engine components, and achieves the effects of less engine cylinder wear and corrosion, improved lubrication, and improved lubrication

Inactive Publication Date: 2019-10-31
AKZO NOBEL CHEM INT BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent is about new copolymers that can improve the properties of marine lubricants by modifying their rheology. These copolymers make marine engine lubricants better by better covering the engine piston cylinder walls, which leads to less wear and corrosion. The method of making the copolymers can also control their properties.

Problems solved by technology

Because slow-speed engines run at a lower temperature than mid- or fast-speed engines, they are more prone to corrosion.
Rust is produced when ferrous metal engine components come in contact with water, which is typically produced by the internal combustion process or from external sources.
Regardless of the source, rust and corrosion reduce engine efficiency and lifetime.
Also, the fuels commonly used in these diesel engines typically contain significant quantities of sulfur.
During the combustion process, the sulfur can combine with water to form sulfuric acid, the presence of which leads to corrosive wear.
In particular, in two-stroke engines for ships, areas around the cylinder liners and piston rings can be corroded and worn by the acid.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0062]To a 4-neck 2000 mL flask equipped with an overhead stirrer, a condenser, a thermocouple and a subsurface nitrogen purge was added 645.5 g of water and 8.7 g of Aerosol® OT. The stirring was turned up to 200 rpm and the subsurface nitrogen purge was started. To the reaction was then added container 270.0 g of lauryl methacrylate, 30.0 g of 2-ethylhexyl methacrylate and 129.9 g of acetone. The reaction was heated up to 43° C. by using a temperature controlled water batch set at 45° C. Once the reaction reached 43° C., 0.04 g of t-butyl hydroperoxide in 7.5 g of water was added. After 5 minutes, 0.29 g of sodium ascorbate dissolved in 7.5 g of water and 0.60 g of a 0.25% solution of iron sulfate hexahydrate was added. The nitrogen purge was then changed to a nitrogen blanket. The reaction was held an additional 5 hours, cooled to room temperature and isolated.

example 2

[0063]To a 4-neck 2000 mL flask equipped with an overhead stirrer, a condenser, a thermocouple and a subsurface nitrogen purge was added 645.5 g of water and 8.7 g of Aerosol® OT. The stirring was turned up to 200 rpm and the subsurface nitrogen purge was started. To the reaction was then added container 240.0 g of lauryl methacrylate, 60.0 g of 2-ethylhexyl methacrylate and 129.9 g of acetone. The reaction was heated up to 43° C. by using a temperature controlled water batch set at 45° C. Once the reaction reached 43° C., 0.04 g of t-butyl hydroperoxide in 7.5 g of water was added. After 5 minutes, 0.29 g of sodium ascorbate dissolved in 7.5 g of water and 0.60 g of a 0.25% solution of iron sulfate hexahydrate was added. The nitrogen purge was then changed to a nitrogen blanket. The reaction was held an additional 5 hours, cooled to room temperature and isolated.

example 3

[0064]To a 4-neck 2000 mL flask equipped with an overhead stirrer, a condenser, a thermocouple and a subsurface nitrogen purge was added 645.5 g of water and 8.7 g of Aerosol® OT. The stirring was turned up to 200 rpm and the subsurface nitrogen purge was started. To the reaction was then added container 210.0 g of lauryl methacrylate, 90.0 g of 2-ethylhexyl methacrylate and 129.9 g of acetone. The reaction was heated up to 43° C. by using a temperature controlled water batch set at 45° C. Once the reaction reached 43° C., 0.04 g of t-butyl hydroperoxide in 7.5 g of water was added. After 5 minutes, 0.29 g of sodium ascorbate dissolved in 7.5 g of water and 0.60 g of a 0.25% solution of iron sulfate hexahydrate was added. The nitrogen purge was then changed to a nitrogen blanket. The reaction was held an additional 5 hours, cooled to room temperature and isolated.

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Abstract

Disclosed are copolymers of alkyl methacrylate monomers wherein said alkyl methacrylate monomers comprise at least: a. Monomers (A) selected from C6-C10 alkyl methacrylate monomers, and b. Monomers (B) selected from C10-C18 alkyl methacrylate monomers, wherein the mass ratio of Monomers (B) in the copolymer to Monomers (A) in the copolymer is about 99:1 to about 60:40 by weight. In some cases, the copolymers are of lauryl methacrylate and C8alkyI methacrylate. Also disclosed are methods for the preparation of the copolymers.

Description

FIELD OF INVENTION[0001]This invention relates to a copolymer, its synthesis and methods of using it.TECHNICAL BACKGROUND[0002]The primary function of lubricants is to decrease friction. Frequently, however, lubricating oils need additional properties to be used effectively. For example, lubricants used in the crankcases of large diesel engines, such as, for example, marine diesel engines, are often subjected to operating conditions requiring special considerations.[0003]Marine diesel engines may generally be classified as slow-speed, medium-speed, or high-speed engines, with the slow-speed variety being used for the largest, deep shaft marine vessels and certain other industrial applications. Slow-speed diesel engines are unique in size and method of operation. The larger units may approach 200 tons in weight and be upward of 10 feet wide and 45 feet high. The output of these engines can be as high as 100,000 horsepower with engine revolutions of 60 to about 200 revolutions per min...

Claims

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Application Information

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IPC IPC(8): C10M145/14C08F220/18C08F297/02
CPCC08F297/026C10M2209/084C08F2800/20C08F220/18C08F2220/1841C08F2220/1883C10M145/14C10N2020/04C10N2020/02C10N2030/02C10N2040/252C08F220/1812C08F220/1808C08L33/04C08F220/1806
Inventor VADILLO, DAMIEN CHRISTIANPHILBIN, MICHAEL TIMOTHYTHOMAIDES, JOHN SOCRATESHE, QIWEITHRELFALL-HOLMES, PHILIP NIGEL
Owner AKZO NOBEL CHEM INT BV