US2989464A - Stabilized suspensions of calcium acetate in oil - Google Patents
Stabilized suspensions of calcium acetate in oil Download PDFInfo
- Publication number
- US2989464A US2989464A US861452A US86145259A US2989464A US 2989464 A US2989464 A US 2989464A US 861452 A US861452 A US 861452A US 86145259 A US86145259 A US 86145259A US 2989464 A US2989464 A US 2989464A
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- US
- United States
- Prior art keywords
- oil
- percent
- calcium acetate
- suspension
- dehydrated
- 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.)
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- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 title claims description 14
- 239000001639 calcium acetate Substances 0.000 title claims description 12
- 229960005147 calcium acetate Drugs 0.000 title claims description 12
- 235000011092 calcium acetate Nutrition 0.000 title claims description 12
- 239000000725 suspension Substances 0.000 title description 24
- 239000000203 mixture Substances 0.000 claims description 32
- 230000001050 lubricating effect Effects 0.000 claims description 11
- 150000001408 amides Chemical class 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 4
- 239000010688 mineral lubricating oil Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000003921 oil Substances 0.000 description 10
- 235000019198 oils Nutrition 0.000 description 10
- 239000004254 Ammonium phosphate Substances 0.000 description 9
- 125000005210 alkyl ammonium group Chemical group 0.000 description 9
- 235000019289 ammonium phosphates Nutrition 0.000 description 9
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 8
- 125000004432 carbon atom Chemical group C* 0.000 description 8
- 239000004094 surface-active agent Substances 0.000 description 7
- 239000004519 grease Substances 0.000 description 6
- -1 substituted alkyl radical Chemical group 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 5
- ILRSCQWREDREME-UHFFFAOYSA-N dodecanamide Chemical compound CCCCCCCCCCCC(N)=O ILRSCQWREDREME-UHFFFAOYSA-N 0.000 description 5
- WFDIJRYMOXRFFG-UHFFFAOYSA-N acetic acid anhydride Natural products CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 4
- AOMUHOFOVNGZAN-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)dodecanamide Chemical compound CCCCCCCCCCCC(=O)N(CCO)CCO AOMUHOFOVNGZAN-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 235000019864 coconut oil Nutrition 0.000 description 2
- 239000003240 coconut oil Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical class CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 2
- ZJXZSIYSNXKHEA-UHFFFAOYSA-N ethyl dihydrogen phosphate Chemical compound CCOP(O)(O)=O ZJXZSIYSNXKHEA-UHFFFAOYSA-N 0.000 description 2
- 229940116335 lauramide Drugs 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 2
- 231100000241 scar Toxicity 0.000 description 2
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical class CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012612 commercial material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- MHZDONKZSXBOGL-UHFFFAOYSA-N propyl dihydrogen phosphate Chemical compound CCCOP(O)(O)=O MHZDONKZSXBOGL-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
- C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
- C10M2207/122—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms monocarboxylic
-
- C—CHEMISTRY; METALLURGY
- 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
- 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
- C10M2215/064—Di- and triaryl amines
- C10M2215/065—Phenyl-Naphthyl amines
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/08—Amides
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/08—Amides
- C10M2215/082—Amides containing hydroxyl groups; Alkoxylated derivatives
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—Amides; Imides
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/043—Ammonium or amine salts thereof
Definitions
- the present invention relates to a motor lubricant improvement in which a suspension of calcium acetate in oil is successfully stabilized, particularly in the presence of small amounts of water.
- the stabilization of such lubricant is effected by the incorporation therein of minor amounts of a mixture of an alkylol amide and an alkyl ammonium phosphate. 7
- the present invention describes a lubricant which comprises a stable suspension of calcium acetate in a mineral oil, preferably a naphthenic mineral oil and which is unaffected by small amounts of water. Because of its excellent antiwcar properties this product is an excellent internal combustion engine lubricant and reduces both piston ring and valve train wear.
- the insensitivity to water is imparted by 0.1 to 10.0 wt. percent of an additive mixture consisting of 20 to 80 wt. percent of an alkyl ammonium phosphate and 80 to 20 wt. percent of an alkylol amide, preferably 40 to 60 wt. percent of the alkylol amide and 60 to 40 wt.
- the lubn'cant is dehydrated, its antiwear properties. are excellent.
- the insensitivity to Water allows the antiwear properties to be maintained when water enters the lubricant and, in addition, retards thickening of the lubricant. These circumstances permit the excellent boundary lubrication properties of calcium acetate to be used under a wide variety of conditions.
- alkyl ammonium phosphates which may be used have the general formula:
- RNP O ONHZR' wherein R is an alkyl or substituted alkyl radical of 1 to 4 carbon atoms and R is an alkyl or substituted alkyl radical of 8 to 20 carbon atoms.
- R is an alkyl or substituted alkyl radical of 1 to 4 carbon atoms and R is an alkyl or substituted alkyl radical of 8 to 20 carbon atoms.
- examples of such compounds include the stearyl amine salt of the stearyl amide of ethyl orthophosphoric acid, the lauryl amine salt of the lauryl amide of n-propyl orthophosphoric acid, the lauryl amine salt of the stearyl amide of ethyl orthophosphoric acid, etc.
- Surface active agents of the above type have been described in US. Patent 2,406,423.
- the preferred alkyl ammonium phosphate of this invention is 2,989,464 Patented June 20, 1961
- the hydrbxyl' group will'gene'rally beattaohed to' the terminal carbon atom, although it may be attached to other carbon atoms of the R" hydrocarbon group, pg
- N, N-di(2 hydroxy ethyl) lauramide examples include N, N-di(2 hydroxy ethyl) lauramide; N-Z-hydroxy ethyl lauraniid; N-G-hydroxy hexyl stearamide and N, N-di(3-hydroiy propyl) lauramide.
- compositions of the invention may also be added to the compositions of the invention.
- additives include: detergents, viscosity index improvers, corrosion inhibitors, pour depressants lyes, and the like.
- the finished lubricating composition was then subjected to several tests.
- the first such test was a 23-hour low temperature Lauson test (oil temperature below F.)
- This Lauson test consists of operating a singlecylinder Lauson engine having a 6.5 :1 compression ratio head with an induction motor at 1840 rpm. and operating at 0.5 BKW (brake kilowatt) load.
- This test showed that the lubricating composition 'gave good performance and no viscosity increase.
- Several samples were then run. in. the
- compositions E to G were prepared by mixing 1 wt.
- this invention comprises a method of obtaining a stable suspension of calcium acetate in oil, which is also resistant to grease formation upon water contamination. To achieve this result it is necessary to use an alkylol amide as one additive and an alkyl ammonium phosphate as the other, preferably together in approximately equal weight amounts.
- a lubricating composition comprising a major proportion of mineral lubricating oil, 1 to 20 wt. percent of calcium acetate and 0.1 to 10.0 wt. percent of an additive mixture consisting of 20 to wt. percent of an alkylol amide of the formula:
- R is a C to C alkyl group of a saturated fatty acid
- R is selected from the group consisting of hydro gen and -R"OH
- R" is a C to C aliphatic wherein R is selected from the group consisting of an alkyl radical of 1 to 4 carbon atoms and substituted alkyl radical of 1 to 4 carbon atoms and R is selected from the group consisting of alkyl radicals of 8 to 20 carbon atoms and substituted alkyl radicals of 8 to 20 carbon atoms.
- a lubricating composition according to claim 1 whereinsaid alkylol amide is N,N-di(2-hydroxy ethyl) lauramide.
- a method of preparing the lubricating composition of claim 1 which comprises neutralizing with lime, in situ in at least a portion of said oil, an acid material selected irom' the group consisting of acetic acid and acetic anhydride, said neutralization being carried out in the presence of said alkylol amine and said alkyl ammonium phosphate, and heating said mixture to a temperature suflicient to dehydrate said mixture.
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Description
No Drawing. Filed Dec. 23, 1959, Ser. No. 861,452 7 Claims. (Cl. 25232.5)'
The present invention relates to a motor lubricant improvement in which a suspension of calcium acetate in oil is successfully stabilized, particularly in the presence of small amounts of water. The stabilization of such lubricant is effected by the incorporation therein of minor amounts of a mixture of an alkylol amide and an alkyl ammonium phosphate. 7
It had earlier been found that suspensions of dehydrated or anhydrous calcium acetate in oil were very effective in reducing piston ring wear in automotive engines. Lubricants containing dehydrated calcium acetate, stabilized by soap or prior surfactants, reduced wear in Caterpillar 1A engine tests much more than conventional heavy duty lubricating oil compositions. However, these calcium acetate suspensions were unsuitable for use in automotive engines because the condensation of water into the lubricant suspension caused gelling with subsequent failure of the engine. This gelling phenomenon is due to the adsorption of water by the hydrophilic anhy- United States Patent drous calcium acetate causing the oil to thicken to an undesirable extent. In addition to being too viscous, the water-containing gel does not have the excellent antiwear properties of the dehydrated lubricant, although it does provide some wear protection.
The present invention describes a lubricant which comprises a stable suspension of calcium acetate in a mineral oil, preferably a naphthenic mineral oil and which is unaffected by small amounts of water. Because of its excellent antiwcar properties this product is an excellent internal combustion engine lubricant and reduces both piston ring and valve train wear. The insensitivity to water is imparted by 0.1 to 10.0 wt. percent of an additive mixture consisting of 20 to 80 wt. percent of an alkyl ammonium phosphate and 80 to 20 wt. percent of an alkylol amide, preferably 40 to 60 wt. percent of the alkylol amide and 60 to 40 wt. percent of the alkyl ammonium phosphate, neither of which is effective alone. Because the lubn'cant is dehydrated, its antiwear properties. are excellent. The insensitivity to Water allows the antiwear properties to be maintained when water enters the lubricant and, in addition, retards thickening of the lubricant. These circumstances permit the excellent boundary lubrication properties of calcium acetate to be used under a wide variety of conditions.
The alkyl ammonium phosphates which may be used have the general formula:
H /OR RNP=O ONHZR' wherein R is an alkyl or substituted alkyl radical of 1 to 4 carbon atoms and R is an alkyl or substituted alkyl radical of 8 to 20 carbon atoms. Examples of such compounds include the stearyl amine salt of the stearyl amide of ethyl orthophosphoric acid, the lauryl amine salt of the lauryl amide of n-propyl orthophosphoric acid, the lauryl amine salt of the stearyl amide of ethyl orthophosphoric acid, etc. Surface active agents of the above type have been described in US. Patent 2,406,423. The preferred alkyl ammonium phosphate of this invention is 2,989,464 Patented June 20, 1961 The hydrbxyl' group will'gene'rally beattaohed to' the terminal carbon atom, although it may be attached to other carbon atoms of the R" hydrocarbon group, pg
cific examples of such materials include N, N-di(2 hydroxy ethyl) lauramide; N-Z-hydroxy ethyl lauraniid; N-G-hydroxy hexyl stearamide and N, N-di(3-hydroiy propyl) lauramide. A commercial material consistingof about 65 wt. percent of N, 'N-di(2-hydroxy ethyl) lauramide as the active ingredient'and available underlfhe trade name Nopcogen 12-L, is the preferred alkylol amide of this invention, although Stepan P-6l6 or similar products may be used. i
Various other conventional additives may also be added to the compositions of the invention. Examples of's'uch additives include: detergents, viscosity index improvers, corrosion inhibitors, pour depressants lyes, and the like.
The invention may be further illustrated by the following examples and the accompanying table.
COMPOSITION A tamine C, 2.5% of phenyl alpha-naphthylamine and 67.5% of a hydrofined naphthenic coastal oilof 55 SUS viscosity at 210 F. This mixture was heated at'32i0 F. until completely dehydrated, cooled and then diluted with 400 wt. percent of the said oil based on'the weight of the dehydrated mixture. Then, as a final step, the composition was homogenized in a Morehouse mill.
' The finished lubricating composition was then subjected to several tests. The first such test was a 23-hour low temperature Lauson test (oil temperature below F.) This Lauson test consists of operating a singlecylinder Lauson engine having a 6.5 :1 compression ratio head with an induction motor at 1840 rpm. and operating at 0.5 BKW (brake kilowatt) load. This test showed that the lubricating composition 'gave good performance and no viscosity increase. Several samples were then run. in. the
4-Ball Wear Test: 1800r.p.m., '1 hr., 1 0 kg.,.153 ,Q, and gave a wear scar varying from 0.25 to 0.30 which is comparable to wear scars obtained from commercial calcium acetate containing lubricants.
'ated centrifuge test tube. .suspension from the oil after centrifuging could be meas- COMPOSITION n 'A third composition was prepared similarly to that of Composition A but containing no surfactant at all.
COMPOSITIONS E TO G Compositions E to G were prepared by mixing 1 wt.
tired by the graduations. The result is expressed in terms of percent of the original suspension occupied by the settled suspension, thus giving an indication of the stability of the suspension in the presence of different surfactants. The greater the volume percent remaining after centrifugalion, the more stable the suspension.
Table I '{EFFEOT OF WATER N CALCIUM ACETATE SUSPENSION I IN OIL] Composition Acetate, Viscosity 1 Suspension Percent Stability 3 "A. Dehydratedi 0.5% Nopeogen 12L+0.5% Vlctamine G 2, 840 98. 0
.B. Dehydrated; 1% Nopcogen f 12-L 5 9,000 84.0
0. Dehydrated; 1% Victamine O. 5 7, 640 98.0 .D. Dehydrated; no surfactant---. 5 840 24.0
E.'C0mposltlon A+1% H O 5 1,800 96.0
F. Composition B+1% H 5 g 98. 0 (3 Composition C+1% H1O 5 98.0
I Viscosity in centistokes at room temperature measured by Brookfleld viscosimeter with a number 3 spindle at 6 r.p.m.
I .1 Volume percent of suspension after centrifuging at 1,500 r.p.m. for
4 hours; the greater the number the more stable the suspension. Lauson test gives good performance and no viscosity increase.
Semi-solid grease.
When 1 wt. percent of Nopcogen 12-L is included in a dehydrated calcium acetate lubricant, the suspension stability is fairly good at 84. When 1 wt. percent of the Victamine C is contained within the dehydrated lubricant an excellent suspension stability results of 98.0. When 05 wt. percent of the Nopcogen l2-L and 0.5 wt. percent of the Victamine C are in the lubricant together,
then an excellent suspension stability of 98.0 ensues.
When 1% water is added to a dehydrated lubricant consolid or grease although the suspension stability remains :very high at 98.0. When 1% water is added to the dehydrated lubricant containing equal amounts of the two additives of the invention, an excellent viscosity reading of 1800 results and a good value of 96.0 is obtained for .the suspension stability. fformed even after extensive aging.
" It may be readily ascertained from the aforegoing table that when no surfactant is present in the lubricating composition, the suspension stability is poor. When either .of the surfactants of the invention are present singly in the blend the suspension stability is good, but when water is added an undesirable semi-solid grease forms. Only. when both surfactants are present in the blend that both suspension stability and resistance to grease forma- 'tion upon water contamination is obtained.
No semi-solid or grease is It is In summary then, it may be said that this invention comprises a method of obtaining a stable suspension of calcium acetate in oil, which is also resistant to grease formation upon water contamination. To achieve this result it is necessary to use an alkylol amide as one additive and an alkyl ammonium phosphate as the other, preferably together in approximately equal weight amounts.
What is claimed is:
1. A lubricating composition comprising a major proportion of mineral lubricating oil, 1 to 20 wt. percent of calcium acetate and 0.1 to 10.0 wt. percent of an additive mixture consisting of 20 to wt. percent of an alkylol amide of the formula:
0 R RiiI -I-R"0H wherein R is a C to C alkyl group of a saturated fatty acid, R is selected from the group consisting of hydro gen and -R"OH, and wherein R" is a C to C aliphatic wherein R is selected from the group consisting of an alkyl radical of 1 to 4 carbon atoms and substituted alkyl radical of 1 to 4 carbon atoms and R is selected from the group consisting of alkyl radicals of 8 to 20 carbon atoms and substituted alkyl radicals of 8 to 20 carbon atoms.
2. A lubricating composition according to claim 1 whereinsaid alkylol amide is N,N-di(2-hydroxy ethyl) lauramide.
3. A lubricating composition according to claim 1 wherein the alkyl group of the said alkyl ammonium phosphate is derived from coconut oil acids.
4. A lubricating composition according to claim 1 wherein said alkylol amide is lauryl diethanolamide and the alkyl group of said alkyl ammonium phosphate is derived from coconut oil acids.
" '5. A lubricating composition according to claim 1 wherein said lubricating oil is a naphthenic oil.
6. A method of preparing the lubricating composition of claim 1 which comprises neutralizing with lime, in situ in at least a portion of said oil, an acid material selected irom' the group consisting of acetic acid and acetic anhydride, said neutralization being carried out in the presence of said alkylol amine and said alkyl ammonium phosphate, and heating said mixture to a temperature suflicient to dehydrate said mixture.
7. A process for preparing a fluid lubricating com- "position comprising a major proportion of a naphthenic No references cited.
Claims (1)
1. A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF MINERAL LUBRICATING OIL, 1 TO 20 WT. PERCENT OF CALCIUM ACETATE AND 0.1 TO 10.0 WT. PERCENT OF AN ADDITIVE MIXTURE CONSISTING OF 20 TO 80 WT. PERCENT OF AN ALKYLOL AMIDE OF THE FORMULA:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US861452A US2989464A (en) | 1959-12-23 | 1959-12-23 | Stabilized suspensions of calcium acetate in oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US861452A US2989464A (en) | 1959-12-23 | 1959-12-23 | Stabilized suspensions of calcium acetate in oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2989464A true US2989464A (en) | 1961-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US861452A Expired - Lifetime US2989464A (en) | 1959-12-23 | 1959-12-23 | Stabilized suspensions of calcium acetate in oil |
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| Country | Link |
|---|---|
| US (1) | US2989464A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125521A (en) * | 1964-03-17 | Calcium mixed-salt lubricant stabilized | ||
| US3194760A (en) * | 1962-11-16 | 1965-07-13 | Socony Mobil Oil Co Inc | Lubricating oil compositions containing calcium acetate and lubricating solids |
| US3231495A (en) * | 1962-08-22 | 1966-01-25 | Exxon Research Engineering Co | Finely divided calcium acetate particles and lubricating compositions thereof |
| US3259577A (en) * | 1963-02-19 | 1966-07-05 | Socony Mobil Oil Co Inc | Lubricant and additives therefor |
| US3310490A (en) * | 1965-06-18 | 1967-03-21 | Exxon Research Engineering Co | Calcium acetate lubricant |
-
1959
- 1959-12-23 US US861452A patent/US2989464A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125521A (en) * | 1964-03-17 | Calcium mixed-salt lubricant stabilized | ||
| US3231495A (en) * | 1962-08-22 | 1966-01-25 | Exxon Research Engineering Co | Finely divided calcium acetate particles and lubricating compositions thereof |
| US3194760A (en) * | 1962-11-16 | 1965-07-13 | Socony Mobil Oil Co Inc | Lubricating oil compositions containing calcium acetate and lubricating solids |
| US3259577A (en) * | 1963-02-19 | 1966-07-05 | Socony Mobil Oil Co Inc | Lubricant and additives therefor |
| US3310490A (en) * | 1965-06-18 | 1967-03-21 | Exxon Research Engineering Co | Calcium acetate lubricant |
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