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Alkyl capped oil soluble polymer viscosity index improving additives for base oils in industrial lubricant applications

An industrial lubricant, an industrial-based technology, applied in the field of base oil formulations, can solve problems such as increasing the viscosity of lubricants

Pending Publication Date: 2017-04-19
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, while viscosity index improvers can increase the viscosity index of a lubricant, they also tend to increase the viscosity of the lubricant at low temperatures (0°C)

Method used

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  • Alkyl capped oil soluble polymer viscosity index improving additives for base oils in industrial lubricant applications
  • Alkyl capped oil soluble polymer viscosity index improving additives for base oils in industrial lubricant applications
  • Alkyl capped oil soluble polymer viscosity index improving additives for base oils in industrial lubricant applications

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example

[0032] Table 1 identifies the base oils used in this example. Two experimental base oils (OSP-AC and OSP-BC) were prepared as follows.

[0033] OSP-AC

[0034] 1600 g of 2-ethyl-1-hexanol was added to a stainless steel reactor vessel, followed by 11.3 g of 85 wt% aqueous potassium hydroxide solution, and the mixture was heated to 115°C under a nitrogen blanket. At a temperature of 130° C. and a pressure of 500 kPa, a mixture of 2400 g of 1,2-propylene oxide and 240 g of 1,2-butylene oxide was charged into the reactor. The mixture was stirred and allowed to digest at 130°C for 12 hours. Residual catalyst was removed by filtration through a magnesium silicate filter bed at a temperature of 50°C to yield an intermediate with a kinematic viscosity of 17.7 cSt at 40°C, 3.81 cSt at 100°C, and a pour point of -59.0°C.

[0035] 5805 g of the above intermediate was added to a stainless steel reactor vessel. Add 2604 g of sodium methoxide solution (25 wt% sodium methoxide in methano...

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Abstract

An industrial base oil formulation comprising a base oil, preferably a hydrocarbon base oil, having a kinematic viscosity of more than 100 centiStokes, preferably 150 centiStokes or more, at 40 degrees Celsius and an AC-OSP where the AC-OSP has the structure of Formula I: R1[O(R2O)n(R3O)m R4]p (I) where R1 is an alkyl having from one to thirty carbons, R2 and R3 are independently selected from alkyl groups having three or four carbons and can be in block form or randomly combined, R4 is an alkyl having from one to 18 carbon atoms, n and m are independently numbers ranging from zero to 20 provided that n+m is greater than zero and p is a number within a range of one to three; wherein the industrial base oil formulation has a kinematic viscosity of greater than 100 centiStokes, preferably 150 centiStokes or more, at 40 degrees Celsius is useful in a lubricant for mechanical devices.

Description

technical field [0001] The present invention relates to base oil formulations for industrial lubricant formulations comprising base oils and alkyl-terminated oil-soluble polymers, the use of such lubricant formulations as lubricants in industrial applications and a A method for improving the viscosity index and low temperature viscosity of hydrocarbon base oils. Background technique [0002] Mechanical devices use lubricants to reduce wear on parts that move close to each other. A challenge, however, is that mechanical devices may need to operate over a wide temperature range that can be well below zero degrees Celsius (°C) to well above 100°C. Lubricants typically change viscosity during use based on temperature. The degree to which a lubricant changes its viscosity with temperature is the lubricant's viscosity index, which is calculated based on the kinematic viscosity of engine oil at 40°C and 100°C. Higher viscosity index values ​​correspond to smaller viscosity chang...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M145/34C10N30/02
CPCC10M145/34C10M169/041C10M2209/106C10M2209/105C10M2205/0206C10N2030/02C10M2203/1025C10M2205/003C10M2205/0285C10M2209/107C10M2209/1075C10M2209/108C10N2020/02C10N2040/04C10N2040/08C10N2040/12C10N2040/30C10N2040/252C10M169/04
Inventor N·克里德吉M·R·格里夫斯E·A·佐格-胡泽曼斯
Owner DOW GLOBAL TECH LLC
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