Lubricant composition comprising polyalkylene oxide

A technology of lubricant composition and polyalkylene oxide, applied in the direction of lubricant composition, base material, petroleum industry, etc., can solve the problems of undisclosed and unsuitable lubricants

Active Publication Date: 2022-05-06
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art does not disclose specific blends of butanol-initiated EO / PO copolymers and dodecanol-initiated PO / BO copolymers in the ratios required to maintain the miscibility of the components of such copolymers
Not all blends of polyalkylene glycols are miscible and such immiscible blends are not suitable as lubricant base stocks

Method used

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  • Lubricant composition comprising polyalkylene oxide
  • Lubricant composition comprising polyalkylene oxide
  • Lubricant composition comprising polyalkylene oxide

Examples

Experimental program
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preparation example Construction

[0041] The preparation of the lubricant composition of the present invention and / or any of its steps may be a batch process or a continuous process. In a preferred embodiment, the method for mixing the components used to prepare the lubricant composition; and the mixing equipment used in the method can be any container and auxiliary equipment well known to those skilled in the art.

[0042] In one embodiment, the present invention includes a combination or blend of at least two components comprising, for example: (a) a first low viscosity (eg, less than about 4 cSt) polyalkylene oxide based fluid composed of A combination of at least two different polyalkylene oxide fluids prepared using a first alcohol such as dodecanol as an initiator and having an average molecular weight of less than about 600 Da; and (b) based on a high viscosity (e.g., greater than about 4cSt) Polyalkylene oxide fluids made from a combination of at least two different polyalkylene oxide fluids using a se...

example

[0057] The following examples and comparative examples further illustrate the present invention in more detail, but should not be construed as limiting the scope thereof.

[0058] Various terms and designations are used in the following examples and comparative examples, which are explained as follows:

[0059] "EO" means ethylene oxide.

[0060] "PO" means propylene oxide.

[0061] "BO" means butylene oxide.

[0062] "UCON TM OSP" stands for oil-soluble polyalkylene glycol.

[0063] The traction coefficients as given herein are derived from the Stribeck curves obtained from the discs used on PCS small tractors 3 / 4 Inch ball measurements form, both ball and disc are made of AISI 52100 steel. Both balls and discs had a surface finish Ra (arithmetic mean deviation) better than 0.01 microns. Measurements were performed at 80°C and 120°C, a load of 50 Newtons, a slide-to-roll ratio (SRR) of 150%, and a speed of 2000 mm / s to 100 mm / s. The test was continuously measured 1...

example 1-2 and comparative example A

[0074] Table II lists the composition or formulation of various base fluids. Table III presents the results of the evaluation of various formulations having the components listed in Table II. Table III highlights the kinematic and dynamic viscosities, viscosity indices, low temperature dynamic viscosities, solubility and traction coefficients for different combinations of the various base fluids that make up the formulations. All fluids had a target viscosity of 11.7 cSt at 100°C.

[0075] Table II - Various Base Fluids

[0076]

[0077] Table III – Test Results for Various Base Fluids

[0078]

[0079] *These examples were not measured due to insolubility. NM = "Not Measured".

[0080] As described in Table III above, Comparative Example A (Comparative Example A) shows standard UCON TM 50-HB-260 and UCON TM Viscosity and Traction Coefficients of 50-HB-400 and comparing these properties with UCON highlighted in Comparative Example E (Comparative Example E) T...

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Abstract

A lubricant composition comprising (a) a first low-viscosity polyalkylene oxide-based fluid, such as propylene oxide (PO) and butylene oxide (BO)-based fluids, as an initiator with a first alcohol Combinations; wherein the first low viscosity PO / BO based fluid has a number average molecular weight of less than about 5600 Da; (b) a second high viscosity polyalkylene oxide based fluid such as ethylene oxide based with a second alcohol as initiator A combination of fluids of (EO) and propylene oxide (PO); wherein the fluid based on the second high viscosity EO / PO has a number average molecular weight greater than about 600 Da; a method for making the aforementioned lubricant; and a method consisting of A transmission system fluid prepared from the lubricant composition described above.

Description

technical field [0001] The present invention relates to a lubricant composition; more particularly, to a polyalkylene oxide based lubricant composition which exhibits improved properties when used in applications such as gear lubricants. Background technique [0002] Prior to this, lubricants based on mineral oils (Group I, II and III base stocks) and polyalphaolefin (PAO) based lubricants (Group IV base stocks) had been used for decades as Transmission fluid for applications such as engine oil, axle oil and transmission fluid. For some applications, fluids are known to be characterized as "fill for life", meaning that once the lubricant is added to the vehicle, the oil does not need to be changed over the life of the vehicle. The 2025 CAFE (Company Average Fuel Economy) regulations related to the requirement for cars to run at 54.5 miles per gallon (mpg) has prompted original manufacturers (OEMs) to seek different lubricant compositions as a way to further increase fuel ec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M145/34C10M145/36
CPCC10M2209/103C10M2209/1033C10M2209/1045C10M2209/1055C10M2209/1075C10M107/34C10N2020/04C10N2030/02C10N2030/06C10N2040/04C10M2209/1085C10M2209/1065
Inventor A·V·科特尼斯J·B·卡斯伯特B·A·珍兹德泽维斯奇
Owner DOW GLOBAL TECH LLC
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