EP1758972A1 - A process for making metal working fluid from heavy alkylate - Google Patents

A process for making metal working fluid from heavy alkylate

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Publication number
EP1758972A1
EP1758972A1 EP05718959A EP05718959A EP1758972A1 EP 1758972 A1 EP1758972 A1 EP 1758972A1 EP 05718959 A EP05718959 A EP 05718959A EP 05718959 A EP05718959 A EP 05718959A EP 1758972 A1 EP1758972 A1 EP 1758972A1
Authority
EP
European Patent Office
Prior art keywords
component
range
group
concentration
sodium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05718959A
Other languages
German (de)
French (fr)
Inventor
Arun Kumar Singh
Onkar Nath Anand
Ashok Kumar Gupta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Council of Scientific and Industrial Research CSIR
Original Assignee
Council of Scientific and Industrial Research CSIR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Council of Scientific and Industrial Research CSIR filed Critical Council of Scientific and Industrial Research CSIR
Publication of EP1758972A1 publication Critical patent/EP1758972A1/en
Withdrawn legal-status Critical Current

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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
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    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/06—Well-defined aromatic compounds
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
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    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
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    • C10M2207/40—Fatty vegetable or animal oils
    • C10M2207/402—Castor oils
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/041—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms used as base material
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
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    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
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    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
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Definitions

  • 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 OF THE INVENTION 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.
  • 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 generally suffer from many disadvantages such as higher loxicity to the environment, poor biodegradability and ever-changing characteristics with changes in crude oil composition.
  • the other types of lubricants known as synthetic lubricants are designed for use in extreme conditions of temperature, pressure, radiation or chemical environment and have excellent lubricity and thermal stability.
  • the synthetic lubricants are relatively costly as compared to petroleum based lubricants.
  • Poly-glycols, polybutenes, dibasic acid esters, fluoropolymers, polyol esters, phosphate esters, silicones, poly-alpha olef ⁇ ns etc. are commonly used synthetic lubricants for various applications. Some of the synthetics are also toxic to environment and are not readily biodegradable. Similar disadvantages are found with Petroleum sulfonates which are byproducts of sulfonation of lubricating oils also suffer from inconsistent emulsif ⁇ cation and compatibility characteristics due to everchanging composition of the lubricating oils.
  • Heavy alkyl benzene as lubricant is very limited. Recently, the Heavy Alkyl Benzene alkaline earth metal sulfonates are in use as detergent-dispersant-anti rust additive in various types of lubricants.
  • M/S Petresa Madrid, Spain, (www.petresa.es) wherein they are marketing heavy alkylate under the brand name of 'PETRENE' to be use as theraial fluid, transformer oil, refrigerating oil, sulfonation feedstock and lubricating greases but not for metalworking fluids.
  • M/s Chevron U.S.A. Inc., (San Ramon, CA) has US patent 6,187,981 "Process for producing arylalkanes and arylalkanes sulfonates, compositions produced therefrom, and uses thereof. Wherein this invention is a process for producing aryl-alkanes.
  • This invention also provides process that to produce modified alkylbenzene sulfonates, which can be used as detergents.
  • Chevron, U.S.A. Inc. (San Ramon, CA) has US patent 6,392,109 "Synthesis of alkylbenzenes and synlubes from Fischer-Tropsch products" which is for an integrated process for producing alkylbenzenes, sulfonated alkylbenzenes and/or alkylcyclohexanes from syngas and used as detergents and/or dispersants.
  • the main objective of the present invention is to provide a process for metalworking fluids from heavy alkylate.
  • Another object of the present invention is to provide heavy alkylate based less toxic lubricant component metalworking fluids. Still another object of the present invention is to provide a new application to the byproduct heavy alkylate.
  • Yet another object of the present invention is to provide new composition of metalworking fluid for the benefit of metalworking and alkylate manufacturing industries.
  • 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.
  • the present invention provides a process for metalworking fluid from heavy alkylate, which comprises ; (a) residual fraction having C20 to C22 carbon atom of detergent class Alkyl Benzene in the concentration range of 50 to 90 weight percent of the metal working fluid , (b) at least one emulsifier in the range of 10 to 40 weight percent of the metalworking fluid, (c) at least one lubricity booster component in the concentration range of 2-10 percent of metal working fluid, (d) an antioxidant component is in the concentration range of 50-500 ppm, (e) a fungicide component in the concentration range of 50-500 ppm, (f) an extreme pressure additive component in the concentration range of 50-500 ppm (g) an antirust component in the concentration range of 50-500 ppm, (h) a co- surfactant component in the range of 1-10 weight percent of metal working fluid, (i) a coupling agent in the range of 0.5 to 10 weight percent of metal working fluid, (j) alkali component in the range of 8-10 weight percent
  • Heavy alkyl benzene is produced as by-products during the preparation of linear alkyl benzene sulfonates for detergent industry.
  • the alkylation reaction of C ⁇ 0 -C ⁇ olefm with benzene results in side reactions to give dialkyl benzenes and alkylated condensed ring derivatives. These products are generally in the range of 5 to 15 percent of the total alkylates depending upon the reaction conditions and purity of reactants employed.
  • Heavy alkyl benzene consists of substituted benzenes and Naphthalenes as determined by HPLC, UV, IR and RI analysis given in Table - 1.
  • the oil component is a heavy alkyl benzene having C20 - C22 carbon number, a heavy fraction, by-product, separated from detergent class alkyl benzene during manufacture.
  • the concentration of heavy alkyl benzene component is in between 50 to 90 weight percent of the metalworking fluid.
  • the emulsifier component is a heavy .' alkylate sodium sulfonates, sodium carboxylate, sodium oleate, Triethalonoamine oleate, Diethalonoamine oleate or Dodecyl Toluene sodium sulfonate or mixtures thereof.
  • the concentration of emulsifier component is in between 10 to 40 weight percent of the metalworking fluid.
  • the vegetable oil component for lubricity booster is a karanja oil, neem oil, rice-bran oil, castor oil or mixtures thereof.
  • the concentration of vegetable oil component for lubricity boost is in between 2 to 10 weight percent of the metalworking fluid.
  • the antioxidant component is an alkyl phenol or aromatic amine or substituted alkyl phenol selected from 2,6-ditertiary butyl phenol, 2,6-ditertiary p-cresol, Diphenylamine, Tertiary butyl phenol amino tetrazole and 2,6-dioctyl phenylene diamine.
  • the concentration of antioxidant component is in between 50 to 500 ppm.
  • the fungicide component is a phenol or phenolic acid selected from o-cresol, phenol, m-cresol and cresylic acid.
  • the concentration of fungicide component is in between 50 to 500 ppm.
  • the extreme pressure additive component is an organic sulfide or phosphosulfurized metal salt selected from dibenzyl disulphide, sulfurized vegetable oil, phosphosulfurized decyl oleate molybdate and phosphothio pentadecyl phenol molybdate.
  • the concentration of extreme pressure additive component is in between 50 to 500 ppm.
  • the anti-rust component is a triazole or sulfonate selected from lH-benzotriazole, ditertiary butylated lH-Benzotriazole, calcium petroleum sulfonate and calcium heavy alkylate sulfonate.
  • concentration of ant-rust component is in between 50 to 500 ppm.
  • the co-surfactant component is a alcohol selected from isopropanol, n-butanol, iso-butanol, iso-amyl alcohol, 2 ethyl hexanol, mono & poly glycol such as di ethylene glycol and tri ethylene glycol.
  • the concentration of co-surfactant component is in between 1 to 10 weight percent of the metalworking fluid.
  • the coupling agent component is a sulfonates (molecular weight less than 350) selected from ligno sulfonate, petroleum sulfonate, sodium dodecyl benzene sulfonate and sodium lauryl sulfate.
  • the concentration of coupling agent component is in between 0.5 to 10 weight percent of the metalworking fluid.
  • the alkali component is a alkali and alkaline earth metal salt selected from sodium carbonate, sodium hydrogen carbonate, calcium carbonate, calcium oxide.
  • the concentration of alkali component is in between 0.5 to 8 weight percent of the metalworking fluid.
  • the composition is suitable for use as metal working fluid and general emulsion as admixture with water in concentration ranging from 20 to 80 weight percent.
  • Dilute emulsion of the soluble oil may be prepared by mixing the concentrate in water with vigorous agitation for 1 to 5 minutes in the ratio of 20:80 to 80:20 as per requirements of the metal work and nature of metal.
  • the present invention provides non-toxic lubricant component by using heavy alkyl benzene and useful for making formulation for metalworking soluble oil.
  • This invention further provides a suitable new application for heavy alkyl benzene as a by-product to increase its value.
  • Example - 1 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.
  • 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, lH-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 final composition (HA - 1) is given in Table - 3.
  • the neat soluble oil then mixed with water in 60:40 ratio and shaken to produce oil-water emulsion.
  • This emulsion was evaluated for its different characteristics, which are given in Table - 4 and 5. It was found that the characteristics of the neat and emulsion are at par with the specifications.
  • Example - 2 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.
  • Example - II The final composition (HA - II) is given in Table - 3 and evaluation in Table-4 & 5.
  • Example - 3 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 - III) 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 - 4 TYPICAL CHARACTERISTICS OF SOLUBLE OIL SN Formulation K. Viscosity Total Ash % Clarity Flash Reactable 40°C - Cst Acid No- Point-°C Sulfur at

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Abstract

The present invention relates to a process for heavy alkylate based less toxic metalworking fluid composition comprising 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 comprises removing of insoluble matter from the heave 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

A PROCESS FOR MAKING METAL WORKING FLUID FROM HEAVY ALKYLATE
FIELD OF INVENTION: 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 OF THE INVENTION 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, generally suffer from many disadvantages such as higher loxicity to the environment, poor biodegradability and ever-changing characteristics with changes in crude oil composition. The other types of lubricants known as synthetic lubricants are designed for use in extreme conditions of temperature, pressure, radiation or chemical environment and have excellent lubricity and thermal stability. The synthetic lubricants are relatively costly as compared to petroleum based lubricants. Poly-glycols, polybutenes, dibasic acid esters, fluoropolymers, polyol esters, phosphate esters, silicones, poly-alpha olefϊns etc. are commonly used synthetic lubricants for various applications. Some of the synthetics are also toxic to environment and are not readily biodegradable. Similar disadvantages are found with Petroleum sulfonates which are byproducts of sulfonation of lubricating oils also suffer from inconsistent emulsifϊcation and compatibility characteristics due to everchanging composition of the lubricating oils. Keeping in the view the environmental concerns and improved performance, consistency in structural and perforaiance characteristics, there is a need to develop alternative lubricant and emulsifier component, for metalworking fluids, which are less toxic and low cost which show equivalent or improved performance to mineral oil or synthetic lubricant based metalworking fluids.
The use of Heavy alkyl benzene as lubricant is very limited. Recently, the Heavy Alkyl Benzene alkaline earth metal sulfonates are in use as detergent-dispersant-anti rust additive in various types of lubricants.
Reference may be made to M/S Petresa, Madrid, Spain, (www.petresa.es) wherein they are marketing heavy alkylate under the brand name of 'PETRENE' to be use as theraial fluid, transformer oil, refrigerating oil, sulfonation feedstock and lubricating greases but not for metalworking fluids. Reference may be made to M/s Chevron, U.S.A. Inc., (San Ramon, CA) has US patent 6,187,981 "Process for producing arylalkanes and arylalkanes sulfonates, compositions produced therefrom, and uses thereof. Wherein this invention is a process for producing aryl-alkanes. This invention also provides process that to produce modified alkylbenzene sulfonates, which can be used as detergents. Chevron, U.S.A. Inc., (San Ramon, CA) has US patent 6,392,109 "Synthesis of alkylbenzenes and synlubes from Fischer-Tropsch products" which is for an integrated process for producing alkylbenzenes, sulfonated alkylbenzenes and/or alkylcyclohexanes from syngas and used as detergents and/or dispersants. In view of the growing concern about the environment, there is a need for less-toxic lubricant component for metalworking soluble oil based on Heavy alkyl benzene, which is a new application of the heavy alkylate. It will not only reduce the toxicity of soluble oil but also will be more cost effective than mineral oil because of improved and consistent performance because both the mineral oil component and the sulfonates made from these alkylates can be tailored to obtain a high perfomiance product of consistent quality. It is an additional benefit to the alkylate industry.
OBJECTS OF THE INVENTION:
The main objective of the present invention is to provide a process for metalworking fluids from heavy alkylate.
Another object of the present invention is to provide heavy alkylate based less toxic lubricant component metalworking fluids. Still another object of the present invention is to provide a new application to the byproduct heavy alkylate.
Yet another object of the present invention is to provide new composition of metalworking fluid for the benefit of metalworking and alkylate manufacturing industries.
SUMMARY OF INVENTION:
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.
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 fomiation of nist 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. DETAILED DESCRIPTION
Accordingly the present invention provides a process for metalworking fluid from heavy alkylate, which comprises ; (a) residual fraction having C20 to C22 carbon atom of detergent class Alkyl Benzene in the concentration range of 50 to 90 weight percent of the metal working fluid , (b) at least one emulsifier in the range of 10 to 40 weight percent of the metalworking fluid, (c) at least one lubricity booster component in the concentration range of 2-10 percent of metal working fluid, (d) an antioxidant component is in the concentration range of 50-500 ppm, (e) a fungicide component in the concentration range of 50-500 ppm, (f) an extreme pressure additive component in the concentration range of 50-500 ppm (g) an antirust component in the concentration range of 50-500 ppm, (h) a co- surfactant component in the range of 1-10 weight percent of metal working fluid, (i) a coupling agent in the range of 0.5 to 10 weight percent of metal working fluid, (j) alkali component in the range of 8-10 weight percent of metal working fluid. Heavy alkyl benzene is produced as by-products during the preparation of linear alkyl benzene sulfonates for detergent industry. The alkylation reaction of Cι0-Cι olefm with benzene results in side reactions to give dialkyl benzenes and alkylated condensed ring derivatives. These products are generally in the range of 5 to 15 percent of the total alkylates depending upon the reaction conditions and purity of reactants employed. Heavy alkyl benzene consists of substituted benzenes and Naphthalenes as determined by HPLC, UV, IR and RI analysis given in Table - 1. The typical properties such as density, kinetic viscosity, viscosity index, refractive index, pour point, molecular weight and distillation characteristics were given in Table - 2. No poly-aromatics or olefmic compounds are present in the heavy alkylates. These heavy alkylates have been acquired from the Indian market. Table - 1 Typical Relative Content of Alkyl Benzenes and Alkyl Napthalenes
Table - 2 Typical Characteristics of Heavy Alkyl Benzenes
In an embodiment of the present invention the oil component is a heavy alkyl benzene having C20 - C22 carbon number, a heavy fraction, by-product, separated from detergent class alkyl benzene during manufacture. In another embodiment of the present invention the concentration of heavy alkyl benzene component is in between 50 to 90 weight percent of the metalworking fluid. In yet another embodiment of the present invention the emulsifier component is a heavy .' alkylate sodium sulfonates, sodium carboxylate, sodium oleate, Triethalonoamine oleate, Diethalonoamine oleate or Dodecyl Toluene sodium sulfonate or mixtures thereof. in still another embodiment of the present invention the concentration of emulsifier component is in between 10 to 40 weight percent of the metalworking fluid. In still another embodiment of the present invention the vegetable oil component for lubricity booster is a karanja oil, neem oil, rice-bran oil, castor oil or mixtures thereof. In still another embodiment of the present invention the concentration of vegetable oil component for lubricity boost is in between 2 to 10 weight percent of the metalworking fluid. In still another embodiment of the present invention the antioxidant component is an alkyl phenol or aromatic amine or substituted alkyl phenol selected from 2,6-ditertiary butyl phenol, 2,6-ditertiary p-cresol, Diphenylamine, Tertiary butyl phenol amino tetrazole and 2,6-dioctyl phenylene diamine. In still another embodiment of the present invention the concentration of antioxidant component is in between 50 to 500 ppm. In still another embodiment of the present invention the fungicide component is a phenol or phenolic acid selected from o-cresol, phenol, m-cresol and cresylic acid. In still another embodiment of the present invention the concentration of fungicide component is in between 50 to 500 ppm. In still another embodiment of the present invention the extreme pressure additive component is an organic sulfide or phosphosulfurized metal salt selected from dibenzyl disulphide, sulfurized vegetable oil, phosphosulfurized decyl oleate molybdate and phosphothio pentadecyl phenol molybdate. In still another embodiment of the present invention the concentration of extreme pressure additive component is in between 50 to 500 ppm.
In still another embodiment of the present invention the anti-rust component is a triazole or sulfonate selected from lH-benzotriazole, ditertiary butylated lH-Benzotriazole, calcium petroleum sulfonate and calcium heavy alkylate sulfonate. In still another embodiment of the present invention the concentration of ant-rust component is in between 50 to 500 ppm.
In still another embodiment of the present invention the co-surfactant component is a alcohol selected from isopropanol, n-butanol, iso-butanol, iso-amyl alcohol, 2 ethyl hexanol, mono & poly glycol such as di ethylene glycol and tri ethylene glycol.
In still another embodiment of the present invention the concentration of co-surfactant component is in between 1 to 10 weight percent of the metalworking fluid.
In still another embodiment of the present invention the coupling agent component is a sulfonates (molecular weight less than 350) selected from ligno sulfonate, petroleum sulfonate, sodium dodecyl benzene sulfonate and sodium lauryl sulfate.
In still another embodiment of the present invention the concentration of coupling agent component is in between 0.5 to 10 weight percent of the metalworking fluid. In still another embodiment of the present invention the alkali component is a alkali and alkaline earth metal salt selected from sodium carbonate, sodium hydrogen carbonate, calcium carbonate, calcium oxide.
In still another embodiment of the present invention the concentration of alkali component is in between 0.5 to 8 weight percent of the metalworking fluid. In still another embodiment of the present invention the composition is suitable for use as metal working fluid and general emulsion as admixture with water in concentration ranging from 20 to 80 weight percent.
After the addition of all the components the mixture is homogenized. Then it is conditioned by keeping it at room temperature for 24 hours undisturbed. Dilute emulsion of the soluble oil may be prepared by mixing the concentrate in water with vigorous agitation for 1 to 5 minutes in the ratio of 20:80 to 80:20 as per requirements of the metal work and nature of metal.
It will be apparent from the foregoing that the present invention provides non-toxic lubricant component by using heavy alkyl benzene and useful for making formulation for metalworking soluble oil. This invention further provides a suitable new application for heavy alkyl benzene as a by-product to increase its value. The invention will now be further described by the following examples, which are given only for the purpose of illustration and not intended to limit the scope of the invention. Although the invention has been described in conjunction with examples and by reference to the embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in art in light of the foregoing description, accordingly it is intended in the invention to embrace these and all such alternatives, variations and modifications as may fall with in the sprit and scope of the appended claims. Example - 1 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, lH-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 final composition (HA - 1) is given in Table - 3. The neat soluble oil then mixed with water in 60:40 ratio and shaken to produce oil-water emulsion. This emulsion was evaluated for its different characteristics, which are given in Table - 4 and 5. It was found that the characteristics of the neat and emulsion are at par with the specifications.
Table - 3 TYPICAL COMPOSITION OF SOLUBLE OIL
Example - 2 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 - II) is given in Table - 3 and evaluation in Table-4 & 5. Example - 3 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 - III) 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 - 4 TYPICAL CHARACTERISTICS OF SOLUBLE OIL SN Formulation K. Viscosity Total Ash % Clarity Flash Reactable 40°C - Cst Acid No- Point-°C Sulfur at
Table - 5 TYPICAL EVALUATION OF SOLUBLE OIL

Claims

We Claim 1. A metalworking fluid composition from heavy alkylate, comprising; (a) residual fraction having C20 to C22 carbon atom of detergent class Alkyl 5 Benzene in the concentration range of 50 to 90 weight percent of the metal working fluid , (b) at least one emulsifier in the range of 10 to 40 weight percent of the metalworking fluid, (c) at least one lubricity booster component in the concentration range of 2-10 percent of metal working fluid, (d) an antioxidant component is in the concentration range of 50-500 ppm, (e) a 0 fungicide component in the concentration range of 50-500 ppm, (f) an extreme pressure additive component in the concentration range of 50-500 ppm (g) an antirust component in the concentration range of 50-500 ppm, (h) a co- surfactant component in the range of 1-10 weight percent of metal working fluid, (i) a coupling agent in the range of 0.5 to 10 weight percent of metal5 working fluid, (j) alkali component in the range of 8-10 weight percent of metal working fluid. 2. A composition as claimed in claim 1, wherein the residual component of Alkyl Benzene is a oil component having heavy alkyl benzene of C20 - C22 carbon number, a heavy fraction by-product separated from detergent class alkylu benzene during manufacture. 3. A composition as claimed in claim 1, wherein the emulsifier is selected from the group consisting of heavy alkylate sodium sulfonates, sodium carboxylate, sodium oleate, Triethalonoamine oleate, Diethalonoamine oleate or Dodecyl Toluene sodium sulfonate or mixtures thereof.5 4. A composition as claimed in claim 1, wherein the lubricity booster is a vegetable oil selected from the group consisting of karanja oil, neem oil, rice- bran oil, castor oil or mixtures thereof. 5. A composition as claimed in claim 1, wherein the antioxidant component is selected from the group consisting of an alkyl phenol, aromatic amine,0 substituted alkyl phenol selected from 2,6-ditertiary butyl phenol, 2,6-ditertiary p-cresol, Diphenylamine, Tertiary butyl phenol amino tetrazole and 2,6-dioctyl • phenylene diamine. 6. A composition as claimed in claim 1, wherein the fungicide component is a phenol or phenolic acid selected from the group consisting of o-cresol, phenol,
5 m-cresol and cresylic acid. 7. A composition as claimed in claim 1, wherein the extreme pressure additive component is an organic sulfide or phosphosulfurized metal salt selected from the group consisting of dibenzyl disulphide, sulfurized vegetable oil, phosphosulfurized decyl oleate molybdate and phosphothio pentadecyl phenol0 molybdate. 8. A composition as claimed in claim 1, wherein the anti-mst component is a triazole or sulfonate selected from the group consisting of lH-benzotriazole, ditertiary butylated lH-Benzotriazole, calcium petroleum sulfonate and calcium heavy alkylate sulfonate.5 9. A composition as claimed in claim 1, wherein the co-surfactant component is a alcohol selected from the group consisting of isopropanol, n-butanol, iso- butanol, iso-amyl alcohol, 2 ethyl hexanol, mono & poly glycol such as di ethylene glycol and tri ethylene glycol. 10. A composition as claimed in claim 1, wherein the coupling agent component is a0 sulfonates (molecular weight less than 350) selected from the group consisting of ligno sulfonate, petroleum sulfonate, sodium dodecyl benzene sulfonate and sodium lauryl sulfate. 11. A composition as claimed in claim 1, wherein the alkali component is a alkali and alkaline earth metal salt selected from the group consisting of sodium5 carbonate, sodium hydrogen carbonate, calcium carbonate and calcium oxide. 12. A composition as claimed in claim 1, wherein the composition is suitable for use as metal working fluid and general emulsion as admixture with water in concentration range from 20 to 80 weight percent. 13. A process for preparing metalworking fluid as claimed in claim 1, said process0 comprises the steps of; a. removing of insoluble matter from the heavy alkylate followed by addition of emulsifier and vegetable oil to obtain the mixture; b. homozenising the resultant mixture at a temperature in the range of 30 to 100°C for about one hour with stirring; c adding the antioxidant, fungicide, extreme pressure additives, anti trust component, cosurfactant, coupling agent, alkali, followed by addition of water to make up the quantity about 1kg, and d. homogenizing the mixture for about 30 minutes, the pH of the solution was adjusted to 7-9 by addition of sodium carbonate and cooling the resultant metal working fluid at room temperature.
14. A process as claimed in claim 13, wherein the residual component of Alkyl Benzene is a oil component having heavy alkyl benzene of C20 - C22 carbon number, a heavy fraction, by-product, separated from detergent class alkyl benzene during manufacture. 15. A process as claimed in claim 13, wherein the concentration of heavy alkyl benzene component is in the range of 50 to 90 weight percent of the metalworking fluid.
16. A process as claimed in claim 13, wherein the emulsifier is selected from the group consisting of heavy alkylate sodium sulfonates, sodium carboxylate, sodium oleate, Triethalonoamine oleate, Diethalonoamine oleate or Dodecyl Toluene sodium sulfonate or mixtures thereof.
17. A process as claimed in claim 13, wherein the concentration of emulsifier component is in the range of 10 to 40 weight percent of the metalworking fluid.
18. A process as claimed in claim 13, wherein the vegetable oil component for lubricity booster is selected from the group consisting of karanja oil, neem oil, rice-bran oil, castor oil or mixtures thereof.
19. A process as claimed in claim 13, wherein the concentration of vegetable oil component for lubricity boost is in the range of 2 to 10 weight percent of the metalworking fluid. 20. A process as claimed in claim 13, wherein the antioxidant component is selected from the group consisiting of an alkyl phenol, aromatic amine, substituted alkyl phenol selected from 2,6-ditertiary butyl phenol, 2,6-ditertiary p-cresol, Diphenylamine, Tertiary butyl phenol amino tetrazole and 2,6-dioctyl phenylene diamine.
21. A process as claimed in claim 13, wherein the concentration of antioxidant component is in the range of 50 to 500 ppm.
22. A process as claimed in claim 13, wherein the fungicide component is a phenol or phenolic acid selected from the group consisting of o-cresol, phenol, m-cresol and cresylic acid.
23. A process as claimed in claim 13, wherein the concentration of fungicide component is in the range of 50 to 500 ppm.
24. A process as claimed in claim 13, wherein the extreme pressure additive component is an organic sulfide or phosphosulfurized metal salt selected from the group consisting of dibenzyl disulphide, sulfurized vegetable oil, phosphosulfurized decyl oleate molybdate and phosphothio pentadecyl phenol molybdate.
25. A process as claimed in claim 13, wherein the concentration of extreme pressure additive component is in the range of 50 to 500 ppm.
2t>. A process as claimed in claim 13, wherein the anti-mst component is a triazole or sulfonate selected from the group consisting of lH-benzotriazole, ditertiary butylated lH-Benzotriazole, calcium petroleum sulfonate and calcium heavy alkylate sulfonate.
27. A process as claimed in claim 13, wherein the concentration of ant-rust component is in the range of 50 to 500 ppm.
28. A process as claimed in claim 13, wherein the co-surfactant component is a alcohol selected from the group consisting of isopropanol, n-butanol, iso- butanol, iso-amyl alcohol, 2 ethyl hexanol, mono & poly glycol such as di ethylene glycol and tri ethylene glycol.
29. A process as claimed in claim 13, wherein the concentration of co-surfactant component is in the range of 1 to 10 weight percent of the metalworking fluid. 3U. A process as claimed in claim 13, wherein the coupling agent component is a sulfonates (molecular weight less than 350) selected from the group consisting of ligno sulfonate, petroleum sulfonate, sodium dodecyl benzene sulfonate and sodium lauryl sulfate.
31. A process as claimed in claim 13, wherein the concentration of coupling agent component is in the range of 0.5 to 10 weight percent of the metalworking fluid. 32. A process as claimed in claim 13, wherein the alkali component is a alkali and alkaline earth metal salt selected from the group consisting of sodium carbonate, sodium hydrogen carbonate, calcium carbonate, calcium oxide. 33. A process as claimed in claim 13, wherein the concentration of alkali component is in the range of 0.5 to 8 weight percent of the metalworking fluid.
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CA2561351A1 (en) 2005-10-06
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WO2005093023A1 (en) 2005-10-06
KR20070015552A (en) 2007-02-05
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KR100967908B1 (en) 2010-07-06
BRPI0507994A (en) 2007-07-31

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