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Lubricant compositions

A kind of lubricant composition, lubricant technology, applied in the direction of lubricating composition, base material, petroleum industry, etc., can solve the problem of high cost

Inactive Publication Date: 2015-04-29
DOW CORNING CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, in terms of lubrication under high loads, silicones (except halogenated silicones) are generally inferior to organic base oils as described above and are generally more costly than organic base stocks

Method used

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  • Lubricant compositions
  • Lubricant compositions
  • Lubricant compositions

Examples

Experimental program
Comparison scheme
Effect test

example

[0118] testing method

[0119] Viscosity Index (VI)

[0120] Viscosity index is measured / calculated using ASTM D 2270-10E: Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100°C (Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100°C).

[0121]

[0122] The dynamic viscosity was measured by a cone-plate viscometer ( MCR 301) with D=8.7s -1 constant shear rate and measured at two different desired temperatures: 40°C and 100°C.

[0123] Density is measured using glass pycnometers according to DIN 51757 (procedure V2). The blend of materials is assumed to be an ideal mixture, ie the density of the blend can be calculated from the corresponding values ​​of the components. The values ​​for the dynamic viscosity were then used to calculate the kinematic viscosity using the material density tabulated below. The calculated kinematic viscosity was then used to calculate the viscosity index according to...

example 1

[0160] Example 1a shows that in the range between 0.5 and 50% by weight of component (B), ie PDES, mixtures according to the invention comprising PDES have a much higher LCC than pure oils. Incorporation of PDES into PAO at an addition level of 5% by weight was already able to see the effect.

[0161] Example 1b: PDES+PAO

[0162]

[0163] Example 1b shows that mixtures according to the invention comprising PDES (i.e. component B) have much higher viscosity index values ​​(at least 10% higher) than 100% PAO (*: viscosity index 143 according to supplier data sheet) .

[0164] Example 2a: PDES+mineral oil

[0165] PDES(wt%)(B)

[0166] 60

example 2

[0167] Example 2a shows that a composition comprising PDES and mineral oil as described previously has a much higher LCC than 100% mineral oil. The effect was seen when PDES was added to mineral oil at an addition level of 5%.

[0168] Example 2b: PDES+mineral oil

[0169] PDES(wt%)(B)

[0170] Example 2b shows that a composition comprising PDES and mineral oil as previously described has less abrasion damage in the four ball test than pure mineral oil (nm means not measurable, load too high to test).

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Abstract

A lubricant composition comprising (A) a non silicone base stock oil and (B) a silicone oil. The Viscosity Index of the lubricant composition, as measured in accordance with ASTM D 2270- 10el, is greater than that of the non silicone lubricant base oil (A) by at least 10% and is shear stable according to DIN 51350-6.

Description

[0001] This patent application claims priority and all advantages of US Provisional Patent Application 61 / 628,871, filed August 14, 2013, the contents of which are incorporated herein by reference. technical field [0002] Lubricant compositions comprising a non-silicone lubricant base stock and a silicone oil are disclosed herein. Background technique [0003] Lubricating oils and compositions are used to reduce friction and wear between moving elements or surfaces. The major components of lubricant oils and compositions are often referred to as base stocks. Base stocks are classified into five classes by the American Petroleum Institute, namely Classes I, II, III, IV and V. Lubricant base stocks include natural lubricating oils, synthetic lubricating oils and mixtures thereof. Groups I to III include base stocks derived from petroleum-based oils, while Groups IV and V include synthetic base stocks containing silicones. [0004] The viscosity of lubricants changes with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M111/04C10N20/02C10N30/02C10N30/06C10N40/06C10N50/10
CPCC10M111/04C10M2203/1006C10M2203/1025C10M2205/006C10M2205/02C10M2205/026C10M2205/0285C10M2207/2835C10M2209/1033C10M2209/105C10M2229/041C10M2229/0415C10M2229/042C10M2229/0425C10M2229/0505C10M2229/052C10M2229/0525C10M2205/028C10N2020/019C10N2020/02C10N2030/02C10N2030/68C10N2040/044C10N2040/042C10N2030/06C10N2040/04C10N2040/046C10N2040/08C10N2050/01C10N2050/10C10M2209/108C10M169/042
Inventor M·费希尔曼弗雷德·容克A·斯塔默赫伯特·斯图格鲍尔
Owner DOW CORNING CORP