DE1258999B - Mineral or synthetic lubricating oil - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

ClOm

German class: 23 c -1/01

Number: 1 258 999

File number: S 89599IV c / 23 c

Filing date: February 19, 1964

Opening day: January 18, 1968

The invention relates to a mineral or synthetic lubricating oil comprising a plurality of Contains lubricating oil additives.

The use of the individual components as lubricating oil additives is well known.

It has now been found that one can obtain a particularly valuable lubricant dispersion for lubrication from marine diesel engines, if you add a lubricating oil based on mineral or synthetic lubricating oils containing 1 to 20 percent by weight calcium acetate, 0.01 to 3 percent by weight of an N-acyl-substituted sarcosine compound of the formula

O
R - C - N - CH ₂ - COOH

CH ₃

wherein R is an aliphatic hydrocarbon radical having 8 to 24 carbon atoms, 0.1 to 10 weight percent of a known metal sulfonate and 0.1 to 5 percent by weight of a known reaction product from 1 mole of a phosphorus sulfide with 4 moles of a dicyclic terpene used.

This lubricating oil composition prevents the formation of deposits on the cylinder passages or slitting, has good load bearing properties, i.e. H. the ability to handle high pressures too resist and neutralize the during the combustion of high sulfur fuels in Sulphurous acids formed by diesel engines.

Another advantage of the mixture is the extremely low wear and tear on machine parts during the operation of marine diesel engines.

The calcium acetate is preferably in an amount of 2 to 8 percent by weight, the sarcosine of 0.1 to 1, the metal sulfonate from 1 to 5 percent by weight and the reaction product from 1 to 3 percent by weight used.

The total amount of additives is therefore about 1 to 35 percent by weight of the amount of lubricating oil. at Fuels with a high sulfur content (1 to 5% sulfur) add 15 to 25 percent by weight to the lubricating oil Additives mixed in.

The lubricating oils used are naphthenic, paraffinic, coastal and mixed-basic oils, including synthetic hydrocarbon oils and other synthetic oils, such as alkylene oxide polymers, Dicarboxylic acid esters, liquid esters of phosphorus, polypropylene glycol are used. The oils should a viscosity (S.U. S.) greater than 70 seconds Mineral or synthetic lubricating oil

Applicant:

Mobil Oil Corporation,
New York, NY (V. St. A.)

Representative:

Dr. E. Wiegand and Dipl.-Ing. W. Niemann,

Patent attorneys,

8000 Munich 15, Nussbaumstr. 10

Named as inventor:
Pierre Marie Coant, Woodbury, NJ;
Francis George Augustine de Monterey,
Woodbury Heights, NJ (V. St. A.)

Claimed priority:
V. St. v. America 19 February 1963
(259 736)

hold at 38 ⁰ C, preferably from 100 to 2,000 seconds at 38 ° C. Solvent-refined coastal oils and mixtures thereof with viscosities (SUS) of 150 to 700 seconds at 38 ° C are very suitable.

The calcium acetate can be anhydrous or hydrated.

The following are used as N-acyl-substituted sarcosines: N-Pelargonyl, N-Undecyloyl, N-Lauroyl, N-myristoyl, N-palmitoyl, N-stearoyl, N-oleoyl, N-linoleoyl, N-arachidoyl, N-behenoyl, N-hyenoyl. Oleyl sarcosine is preferred.

Known petroleum sulfonic acids and synthetic alkaryl sulfonic acids, in particular, are used as metal sulfonates those with high molecular weights, from 300 to 800, such as octylbenzenesulfonic acid, Dodecylbenzenesulfonic acid, dioctylbenzenesulfonic acid, octadecylbenzenesulfonic acid, waxbenzenesulfonic acid and wax naphthalenesulfonic acid is used.

Calcium, barium and magnesium are suitable metals. A weakly basic one is preferred Calcium petroleum sulfonate.

The reaction product obtained by reacting a di-cyclic terpene and a phosphorus sulfide at a temperature of 100 to 160 ⁰ C.

709 719/389

The phosphorus sulfides include ζ. B. P3S6,
P ₄ S ₃₅ PaS ₅ , P4S7. P2S5 is preferred.

The dicyclic terpenes are those that contain a double bond in the molecule and have two ring systems. Examples are pinene, camphene and fenchen or mixtures thereof. Also essential oils that predominantly contain such a terpene, e.g. B. turpentine oil can be used will. Pinene and turpentine oil are preferred.

First, a stabilized ΌΊ-dispersion of calcium acetate and sarcosine is produced separately by mixing in a Manton-Gaulin homogenizer, which is operated at a pressure of about 70 to 350 kg / cm ^2. The other additives are then added to the stabilized dispersion at from 20 to 100 ^° C., preferably from 90 to 100 ^° C.

example 1

Example 5 Lubricating oil mixture according to the invention from

Solvent refined coastal oil

55 to 60 S. U.S. at 99 ° C

150 to 160 S.U. S. at 99 ° C

Product from example 1

Product from example 3

Product from example 4

Parts

78

5 14

20th

57 parts of mineral oil, 40 parts of calcium acetate and 3 parts of oleoyl sarcosine are placed in a mixing vessel. The mixture is ^{heated to 138 °} C. with stirring, kept at this temperature for 20 minutes and then cooled ^{to 25 ° C.} It is then homogenized using a Manton-Gaulin homogenizer (210 kg / cm ² ).

The mineral oil used consisted of a solvent-refined naphthenic coastal oil having a viscosity (S.U. S.) of 500 seconds at 38 ° C. The calcium acetate contained 6% water.

Example 2

Distillate with a viscosity (S.U. S.) of 95 seconds at 38 ° C is treated with oleum, then filtered and neutralized with caustic soda solution. The mixture of oil and sodium sulfonates is made then reacted with an aqueous solution of barium chlorides. After separation of the oil layer and drying gives a barium petroleum sulfonate.

Example 3

Mineral oil of a weakly basic calcium petroleum sulfonate (about 40% active ingredient) of the properties :

Density, ⁰ API 15.6

Flash point, ⁰ C 243

Viscosity (S.U. S.), 99 ° C, 1100 seconds

Calcium, weight percent 1.7

Sulfur, weight percent 2.7

Base number 8.0

Example 4

800 parts by weight of pinene and an equal weight of motor oil, viscosity (SUS) 45 seconds at 99 ° C, are heated to 105 ° C with stirring. 326 parts of P2S5 are slowly added, the temperature rising to 115 ° C. as a result of the exothermic reaction. The mixture is heated and filtered. The filtrate, consisting of 1842 parts by weight, is then topped off under vacuum at 5 mm pressure to a pot temperature of 150 ⁰ C. The residue, which consists of 1693 parts by weight, is a clear, viscous oil.

The oil is ^{intimately mixed at 90 °} C. for 2 hours. The oil has the following properties:

Density, ⁰ API 21.5

S. U.S., 38 ° C 1242

S.U. S., 99 ° C 95

Viscosity Index 88

Total Base Number (TBN) 40

Example 6 Lubricating oil mixture according to the invention from

Part 70

Paraffinic distillate neutral oil
46.5 SUS, at 99 ° C

Neutral oil

90S. US 99 ⁰ C 13

Product according to example 1 14

Product according to example 3 2

Product according to example 4 1

The components are stirred at 82 ° C. the Properties of the lubricating oil are:

Density, ⁰ API 22.0

S. U.S., 38 ° C 1200

S.U. S., 99 ° C 95

Total Base Number (TBN) 40

When using the lubricating oil according to the invention, as comparative tests showed, a synergistic effect achieved. The "Almen Load" test procedure was followed in these tests, . to determine the load-bearing capacity of a gear lubricant for high pressure lubrication. The Almenmaschine consists of a pin that revolves between sockets that rise in periodic intervals Periods of time are charged until a seizure or failure between the pin and the sockets entry. Failure readings are given in units equivalent to English pounds and are the mean values of two separate experiments.

The lubricants to be tested were made from a solvent-refined mineral oil and various Quantities of the following additives made:

A. the calcium acetate oleyl sarcosine dispersion according to Example 1,

B. a calcium petroleum sulfonate solution, prepared according to Example 3 and

C. the PiiSs pinene reaction product, prepared according to Example 4.

The results of the "Almen Load" test are summarized below in tabular form. the Compositions of each of the lubricating oils tested are also given in the table. The composition No. 8 lubricating oil is similar to that of Examples 5 and 6.

composition 1 83 3 4th 5 6th 7th 8th oil 100 17th 97 97 83 83 97 83 Additive A 7000 3 14th
3 14th 1 14th
2 Additive B 3500 3000 3
8000 9500 3
8000 1
4500 1
14000 Additive C .. "Almen Load" test
Seizure load, units

The compositions 1 to 7, consisting of oil alone, the oil with the individual additives and the oil with two combined additives, all showed failure at loads below 10,000 units. That However, lubricating oil 8 had a maximum load capacity of 14,000 units at a total additive concentration which was no greater than that of compositions 2, 5 and 6.

Other customary additives, such as pour point depressants, Viscosity index improvers, anti-rust agents, cleaning agents or defoamers added will.

Claims (1)

Claim: Mineral or synthetic lubricating oil with a content of 1 to 20 percent by weight Calcium acetate, 0.01 to 3 percent by weight of an N-acyl substituted sarcosine compound of the formula Il R - C - N - CH ₂ - COOH CH ₃ wherein R is an aliphatic hydrocarbon radical having 8 to 24 carbon atoms, 0.1 to 10 percent by weight of a known metal sulfonate and 0.1 to 5 percent by weight of a known one Reaction product of 1 mole of a phosphorus sulfide with 4 moles of a dicyclic terpene. Considered publications:
German patent specification No. 856 773.