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Process for metalworking fluid from heavy alkylate

a technology of metalworking fluid and alkylate, which is applied in the direction of petroleum industry, lubricant composition, etc., can solve the problems of rust formation on iron and steel surfaces, water alone cannot cool the metal surface with full ability, and higher environmental toxicity

Inactive Publication Date: 2011-09-29
COUNCIL OF SCI & IND RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to poor wetting efficiency, water alone can't cool the metal surface with its full ability.
Another serious disadvantage is the formation of rust on iron and steel surfaces.
Petroleum based soluble oils; generally suffer from many disadvantages such as higher toxicity to the environment, poor biodegradability and ever-changing characteristics with changes in crude oil composition.
The synthetic lubricants are relatively costly as compared to petroleum based lubricants.
Some of the synthetics are also toxic to environment and are not readily biodegradable.
Similar disadvantages are found with Petroleum sulfonates which are by-products of sulfonation of lubricating oils also suffer from inconsistent emulsification and compatibility characteristics due to ever-changing composition of the lubricating oils.
The use of Heavy alkyl benzene as a lubricant is very limited.

Method used

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  • Process for metalworking fluid from heavy alkylate

Examples

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Effect test

example 1

[0085]TAILORING OF HEAVY ALKYLATE: 1 Kg. of commercial heavy alkylates (A), a heavy waste of detergent class linear alkyl benzene (LAB), was fractionated by vacuum distillation. The heavier cut, 0.65 Kg. (having 65 weight percent of total alkylate) was taken for base-stock preparation. The typical properties of the alkylate are:

Density at 15° C., gm / ml: 0.8805, Kinetic viscosity at 40° C., cst: 52.73, Viscosity index: 40. Refractive index at 20° C.: 1.49026, Pour point: (−)36° C., Molecular weight: 441±5, Distillation range: 415° C. above, Poly-aromatics or olefinic compounds: Negligible.

example 2

[0086]TAILORING OF ALKYLATE: 1 Kg. of commercial alkylates (B), waste alkyl benzene from other stream of detergent class linear alkyl benzene (LAB), was fractionated by vacuum distillation. The heavier cut, 0.6 Kg. (having 60 weight percent of total alkylate) was taken for base-stock preparation. The typical properties of the alkylate are:

Density at 15° C., gm / ml: 0.8806, Kinetic viscosity at 40° C., cst: 50.11, Viscosity index: 55, Refractive index at 20° C.: 1.49106, Pour point: (−)33° C., Molecular weight: 428±5, Distillation range: 400° C. above, Poly-aromatics or olefinic compounds: Negligible

example 3

[0087]TAILORING OF HEAVY ALKYLATE: 1 Kg. of commercial heavy alkylates (C), a heavy waste fraction of detergent class linear alkyl benzene (LAB) from other stream, was fractionated by vacuum distillation. The heavier cut 0.7 Kg (having 70 weight percent of total alkylate) was taken for base-stock preparation. The typical properties of the alkylate are:

Density at 15° C., gm / ml: 0.8807, Kinetic viscosity at 40° C., cst: 48.32, Viscosity index: 46, Refractive index at 20° C.: 1.49028, Pour point: (−)30° C., Molecular weight: 441±5, Distillation range: 395° C. above, Poly-aromatics or olefinic compounds: Negligible

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Abstract

The present invention relates to composition of metalworking fluid based on heavy alkyl benzenes having 20 to 22 alkyl carbon atoms and process for the preparation thereof. The heavy alkyl benzene based, less toxic, soluble metalworking fluid composition comprises heavy alkyl benzene, emulsifier, lubricity booster, antioxidant, fungicide, extreme pressure additive, antirust, co-surfactant, coupling agent and alkali component. The process comprises tailoring the heavy alkyl benzene, removing of insoluble matter from the heavy alkylate, addition of emulsifier, additives, coupling agent and co-surfactant, homogenizing the mixture at 20-120° C., followed by conditioning of the soluble metal working fluid concentrate which can be used as emulsion in water.

Description

PRIORITY[0001]This application is a continuation-in-part of U.S. patent application Ser. No. 10 / 810,387 filed Mar. 26, 2004, the entire disclosure of which is hereby incorporated by reference.FIELD OF INVENTION[0002]The present invention relates to a process for metalworking fluids from heavy alkylate. More particularly this invention relates to composition of soluble metalworking fluid and process for its preparation based on less-toxic heavy alkyl benzenes having 20 to 22 alkyl carbon atoms to replace mineral oil. This soluble metalworking fluid composition comprises heavy alkylate, emulsifier lubricity booster, antioxidant, fungicide, extreme pressure additive, antirust, co-surfactant, coupling agent and alkali component. The process comprises tailoring the heavy alkylate, removing of insoluble matter from the heavy alkylate, addition of emulsifier, additives, coupling agent and co-surfactant, homogenizing the mixture at 20-120° C., followed by conditioning of the soluble metal w...

Claims

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Application Information

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IPC IPC(8): C10M169/04
CPCC10M169/04C10N2270/02C10M2201/062C10M2203/065C10M2205/22C10M2205/223C10M2207/021C10M2207/022C10M2207/023C10M2207/026C10M2207/046C10M2207/10C10M2207/103C10M2207/126C10M2207/40C10M2207/402C10M2209/103C10M2215/041C10M2215/042C10M2215/06C10M2215/064C10M2215/223C10M2219/024C10M2219/04C10M2219/0406C10M2219/044C10M2219/083C10M2223/045C10M2223/12C10M2223/121C10N2210/01C10N2210/02C10N2210/06C10N2240/401C10M173/02C10N2010/02C10N2010/04C10N2010/12C10N2040/22C10N2070/02
Inventor SINGH, ARUN KUMARANAND, ONKAR NATHGUPTA, ASHOK KUMAR
Owner COUNCIL OF SCI & IND RES
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