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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 fuels, group 5/15 element organic compounds, manufacturing tools, etc., can solve the problems of rust formation on iron and steel surfaces, water alone cannot cool the metal surface with full ability,

Inactive Publication Date: 2005-09-29
COUNCIL OF SCI & IND RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] The speed of machining could be greatly increased if the cutting surface is kept cool and lubricated. Water can be regarded as the first cutting fluid because of its high specific and latent heats to give it unique potential cooling power and also it is available everywhere at low cost. 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. Modem development has led to the introduction of advanced water-oil emulsion incorporating special chemicals, which considerably improve its wettability, lubrication, high cooling power, rust inhibiting and detergency properties. These concentrates and their emulsions in water are known as ‘Soluble Oil’. They are ideal for general machining process where Cooling, Lubrication, Cleaning and extreme pressure characteristics are essential requirements

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example-1

[0044] After removal of insoluble matter, the heavy alkyl benzene in 65 weight percent was mixed with heavy alkyl benzene sodium sulfonate in 10 weight percent and karanja oil 5 weight percent of metalworking fluid as component for lubricity. The mixture was homogenized at 30 to 100° C. for one hour with stirring to obtain clear solution. Then ligno sulfonate as coupling agent in concentration of 5 weight percent of the fluid, 2,6, ditertiary butyl 4 methyl phenol 100 ppm as antioxidant, cresylic acid 100 ppm as fungicide, dibenzyl disulfide 100 ppm as extreme pressure additive, 1H-benzotriazole 100 ppm as antirust additive and isobutanol 5 weight percent of the metalworking fluid as co-surfactant were added. The mixture was further homogenized for 30 minutes. Water was added to make-up quantity to 1 kg and further homogenized for 30 minutes. The pH of the solution was adjusted to 7-9 by adding sodium carbonate. The solution was cooled down to room temperature with stirring. The fin...

example-2

[0045] The procedure of Example 1 was repeated with alkylate 60 weight percent except that Dodecyl Toluene Sodium Sulfonate 15 weight percent was taken as emulsifier in place of Heavy Alkyl Benzene Sodium Sulfonate, neem oil as component for lubricity in place of Karanja oil, 2,6-dioctyl phenylene diamine as antioxidant in place of 2,6,-ditertiary butyl 4-methyl phenol, m-cresol as fungicide in place of cresylic acid, phosphothio pentadecyl phenol as extreme pressure additive in place of dibenzyl disulphide. The final composition (HA-I1) is given in Table-3 and evaluation in Table-4 & 5.

example-3

[0046] The procedure of Example 1 was repeated with alkylate 75 weight percent except that Sodium Oleate 10 weight percent was taken as emulsifier in place of Heavy Alkyl Benzene Sodium Sulfonate. The final composition (HA-II1) is given in Table-3 and evaluation in Table-4 & 5. It was found that the characteristics of the neat and emulsion are as per requirement.

TABLE 4TYPICAL CHARACTERISTICS OF SOLUBLE OILTotalReactableK. ViscosityAcid No-FlashSulfur atSNFormulation40° C. - Cstmg KOHAsh %ClarityPoint-° C.100° C.1HA-I23.3NIL0.009Clear210NIL2HA-II26.2NIL0.008Clear215NIL3HA-III24.5NIL0.006Clear213NIL

[0047]

TABLE 5TYPICAL EVALUATION OF SOLUBLE OILSaponificationCopperDepositEmulsionCastvalue -Low tempFrothingSNFormulationcorrosionteststabilityiron rustmg KOHStabilityTest1HA-INILPassPass4.8PassPass2HA-IINILPassPass4.5PassPass3HA-IIINILPassPass4.6PassPass

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Abstract

The process relates to composition of metalworking fluid and for its preparation based on heavy alkyl benzenes having 22 to 26 carbon atoms to replace mineral oil and process for the same. A process for heavy alkylate based less toxic metalworking fluid composition comprising of heavy alkyl benzene, one emulsifier which is a sodium oleate, sulfonate or mixtures thereof, a vegetable oil as lubricity booster, an antioxidant, a fungicide, an extreme pressure additive, an antirust, a co-surfactant, a coupling agent and alkali component. The process comprising of 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 metal working fluid concentrate which can be used as emulsion in water.

Description

FIELD OF INVENTION [0001] The present invention relates to a process for metalworking fluids from heavy alkylate. More particularly this invention relates to composition of metalworking fluid and process for its preparation based on heavy alkyl benzenes having 22 to 26 carbon atoms to replace mineral oil. BACKGROUND AND PRIOR ART REFERENCES [0002] Traditionally, the mineral oils and petroleum sulfonates have been the basic source of metalworking fluid formulations. The petroleum based lubricating oils and sulfonates are hydrocarbons of varying composition consisting of naphthenes, paraffins and aromatics. The sulfonates on the other hand formed by sulfonation of aromatic components in these lubricating oil streams act as oil / water emulsifiers. Besides these various additives, which are primarily chemicals of defined composition or structure, are added to the soluble oils to improve the physico-chemical properties and performance of metalworking fluids. Petroleum based soluble oils, ...

Claims

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Application Information

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