Lubricant spray polymers

A technology of copolymers and mixtures, applied in lubricating compositions, petroleum industry, etc., can solve the problems of reducing engine efficiency and life

Inactive Publication Date: 2019-02-05
AKZO NOBEL CHEM INT BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of the source, rust and corrosion reduce engine efficiency and life

Method used

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  • Lubricant spray polymers
  • Lubricant spray polymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Mix 645.5g water and 8.7g OT was added to a 4 neck 2000 mL flask equipped with overhead stirrer, condenser, thermocouple and subsurface nitrogen flush. Stirring was turned up to 200 rpm and a subsurface nitrogen flush was started. Subsequently, 270.0 g of lauryl methacrylate, 30.0 g of 2-ethylhexyl methacrylate, and 129.9 g of acetone were added to the container to react. The reaction was heated to 43°C by using a temperature-controlled water bath set at 45°C. Once the reaction reached 43°C, 0.04 g tert-butyl hydroperoxide in 7.5 g water was added. After 5 minutes, 0.29 g of sodium ascorbate was dissolved in 7.5 g of water and 0.60 g of 0.25% ferric sulfate hexahydrate solution was added. The nitrogen flush was then changed to a nitrogen blanket. The reaction was continued for another 5 hours, cooled to room temperature and separated.

Embodiment 2

[0073] Mix 645.5g water and 8.7g OT was added to a 4 neck 2000 mL flask equipped with overhead stirrer, condenser, thermocouple and subsurface nitrogen flush. Stirring was turned up to 200 rpm and a subsurface nitrogen flush was started. Then, 240.0 g of lauryl methacrylate, 60.0 g of 2-ethylhexyl methacrylate, and 129.9 g of acetone were added to the container to react. The reaction was heated to 43°C by using a temperature-controlled water bath set at 45°C. Once the reaction reached 43°C, 0.04 g tert-butyl hydroperoxide in 7.5 g water was added. After 5 minutes, 0.29 g of sodium ascorbate was dissolved in 7.5 g of water and 0.60 g of 0.25% ferric sulfate hexahydrate solution was added. The nitrogen flush was then changed to a nitrogen blanket. The reaction was continued for another 5 hours, cooled to room temperature and separated.

Embodiment 3

[0075] Mix 645.5g water and 8.7g OT was added to a 4 neck 2000 mL flask equipped with overhead stirrer, condenser, thermocouple and subsurface nitrogen flush. Stirring was turned up to 200 rpm and a subsurface nitrogen flush was started. Then, 210.0 g of lauryl methacrylate, 90.0 g of 2-ethylhexyl methacrylate, and 129.9 g of acetone were added to the container to react. The reaction was heated to 43°C by using a temperature-controlled water bath set at 45°C. Once the reaction reached 43°C, 0.04 g tert-butyl hydroperoxide in 7.5 g water was added. After 5 minutes, 0.29 g of sodium ascorbate was dissolved in 7.5 g of water and 0.60 g of 0.25% ferric sulfate hexahydrate solution was added. The nitrogen flush was then changed to a nitrogen blanket. The reaction was continued for another 5 hours, cooled to room temperature and separated.

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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, thecopolymers are of lauryl methacrylate and C8alkyI methacrylate. Also disclosed are methods for the preparation of the copolymers.

Description

technical field [0001] The present invention relates to copolymers, their synthesis and methods of use. Background technique [0002] The main function of a lubricant is to reduce friction. Frequently, however, lubricating oils require additional properties for effective use. For example, lubricants in crankcases used in large diesel engines, such as marine diesel engines, are often subject to operating conditions that require special consideration. [0003] Marine diesel engines can generally be classified as slow, medium or high speed engines, the slow variety being used on the largest high shaft vessels and certain other industrial applications. Slow speed diesel engines are unique in size and method of operation. Larger units may approach 200 tons in weight and be over 10 feet wide and 45 feet high. The output of these engines can be as high as 100,000 horsepower and the engine speed is from 60 to about 200 revolutions per minute. It is of typical crosshead design a...

Claims

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Application Information

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IPC IPC(8): C10M145/14C08L33/04C08F220/18C10N20/02C10N20/04C10N40/25
CPCC10M145/14C08L33/04C10M2209/084C08L33/10C08F220/1812C08F220/1808C10N2020/04C10N2020/02C10N2040/252C08F220/68C08F220/1806
Inventor D·C·瓦蒂洛M·T·菲尔宾J·S·托迈蒂斯何其维P·N·思雷福尔-霍姆斯
Owner AKZO NOBEL CHEM INT BV
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