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Demulsifiers for oil soluble polyalkylene glycol lubricants

A technology of copolymers and random copolymers, used in lubricating compositions, petroleum industry, etc.

Inactive Publication Date: 2016-06-15
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention addresses the problem of producing PO / BO copolymer formulations that pass the ASTM D1401 water separability test

Method used

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  • Demulsifiers for oil soluble polyalkylene glycol lubricants
  • Demulsifiers for oil soluble polyalkylene glycol lubricants
  • Demulsifiers for oil soluble polyalkylene glycol lubricants

Examples

Experimental program
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example

[0034] Table 1 lists the PO / BO copolymers used in the following examples. UCON is a trademark of The Dow Chemical Company.

[0035] Table 1

[0036]

[0037]

[0038] Table 2 lists the EO / PO copolymers used in the following examples. SYNALOX is a trademark of The Dow Chemical Company.

[0039] Table 2

[0040]

[0041] Prepare ExPol1

[0042] Into the reactor purged with nitrogen, an amount of starter 1 (775 grams (g)) was added to the reactor vessel (starter 1 was an ethoxylated derivative of glycerol with Mn=625). This was followed by the addition of Potassium (KOH, 25 g, 45% by weight) in water and the temperature raised to 115° C. and excess water removed in vacuo at a pressure of about 30 millibar (mbar) until the level was less than (<) as relative to the total composition 2500 parts per million (ppm) by weight. The reaction vessel was heated to 135°C and EO (1121 g) was added. Once the feeding step was complete, the reactants were digested at 135°C for a p...

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Abstract

A composition contains a propylene oxide / butylene oxide copolymer with an ethylene oxide / propylene oxide copolymer where the propylene oxide / butylene oxide copolymer has a concentration of propylene oxide moieties in a range of 25-75 wt% based on total of propylene oxide and butylene oxide moieties, the ethylene oxide / propylene oxide copolymer has a concentration of ethylene oxide moieties that is greater than zero and up to 60 wt% based on the total weight of ethylene oxide and propylene oxide moieties, and wherein the concentration of the ethylene oxide / propylene oxide copolymer is greater than zero and one wt% or less based on the total weight of propylene oxide / butylene oxide and ethylene oxide / propylene oxide copolymers and the ethylene oxide / propylene oxide copolymer is a reverse copolymer or a random copolymer.

Description

technical field [0001] The present invention relates to lubricant fluids comprising propylene oxide / butylene oxide copolymers. Background technique [0002] Lubricating fluids (lubricants) are an essential component of mechanical devices. Lubricating fluids contain base oils with various additives. Lubricants may or may not contain water. Many lubricants, including lubricants of the present invention, are considered anhydrous lubricants because water is an undesirable component and is preferably absent from the lubricant. Lubricants are suitable as hydraulic fluids, gear oils, turbine fluids and compressor oils. In these applications, it is important that the lubricant repels water that may enter the lubricant, as water may cause corrosion or poor lubricating properties when present in the lubricant. For this reason, it is not desired that the lubricant or the base oil in the lubricant dissolve water or form a stable emulsion with water. Instead, the lubricant and its b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/02
CPCC08L71/02C08L2205/02C08G2650/58C10M145/34C10M2209/107C10N2030/04
Inventor M·R·格里夫斯E·A·佐格-胡泽曼斯
Owner DOW GLOBAL TECH LLC
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