DE1594329A1 - Liquid lubricant - Google Patents

Description

PATENT LAWYERS

DR ₁ -INCVONKREISLEr DR.-IN6. ALREADY FOREST DR.-ING. TH. MEYER DR. FUES DlPL-CHEM. ALEK VON KREISLER DIPL.-CHEM. CAROLA KELLER DR.-ING. KLCFPSCH

COLOGNE 1, DEICHMANNHAUS

Cologne, November 27, 1969 Fu / st.-

Antar Petroles de 1'Atiantique

4 Rue Leon Jost, Paris (France )

Liquid lubricant

(Addition to patent (patent application A 44 917 IVc / 2 ^ c)

Subject of the main patent. (Patent application A 44 917 IVc / 23c) is a mineral lubricating oil for gear ratios, in particular gears, change gears and motor-driven lifting cranes, which is made from mineral oil and, based on 100 parts by weight of the mineral oil, from 0.5 - 5) ° dispersant and / or viscosity index improver, 6 - ± 0% maximum pressure additive to o, 2 - 15 $ * appropriate o, 2 - ψ, ο compound additive, o, 2 - l ^c jo molybdenum disulphide and o, o2 - o, o5> o consists of synthetic graphite, wherein the molybdenum sulfide and the graphite have already been added during the production of the lubricating oil.

According to the characteristic of the invention, the lubricating oil contains on loo parts by weight of the mineral oil o, 2 - 5 $ of the dispersing agent and / or viscosity index improver because good results are also obtained in quantities of between O 2 and o, 55 ^.

A lubricant according to the invention has the following composition, for example:

009842 / U32

Quality mineral oil loo parts by weight

and, based on the mineral oil,

Viscosity index improver Vp

Maximum pressure additive fjo

Compound addition 2 #

MoS ₂ o, 5/0

Graphite (synthesized) o, o25 ^

A methyl methacrylic acid ester polymer is used as a viscosity index improver with a molecular weight of 8,000 to 15,000, obtained by copolymerization of dodecyl methacrylate with IT diethylaminoethyl methacrylate in the ratio of 9o to Io wt .- $ is obtained.

The extreme pressure additive is a mixture of 2o; J zinc alkyldithiophosphate in chlorinated paraffin, the chlorine content of which is approx. 57 ^ chlorine.

The compound additive is a mixture of 5ο / ό saponifiable oil, which has been subjected to corpuscular radiation using the electrion method , and 5op mineral oil.

In the laboratory, systematic tests were carried out with the four-ball tester, the Timken oil testing machine and the testing machine of the Service Technique de la Marine to determine the wear (or the diameter of the displacement in the four-ball tester) and the pressures at which pressing and welding occurs, exceptionally good results have been obtained in these experiments.

Tests were also carried out under practical conditions. The following could be determined:

BATH ORIGINAL
00 98 42/1432

a) a significant reduction in noise that is perceptible even to the inexperienced ear,

b) Disappearance of the erosion (or hole formation) on certain parts that have to withstand high pressures (in particular in the power transmission ("pont ä vis") of the vehicles;

Smoothness of the gearbox: easier shifting of the gears, the difference being the main one in extreme cold (-2o to 1962/1963) is perceptible;

in extreme cold (-2o to -30 ⁰ C during the winter

d) Reduction of the friction, recognizable by the lower temperatures of the gearbox after the same load (ambient temperature 30 ⁰ C on the motorway):

Usual super-liquid lubricant pressure oil according to the invention

Peugeot 4o4 125 ° C 115 ° C

and an increase in the performance of the gearbox, which is expressed in an increase in the top speed.

OO 9 ft 4 2 / "5 h ? 2
BATH ORIGINAL

Claims (1)

- 4 patent claim Mineral sohra oil for gear ratios Patent (patent application A 44 917 IVc / 23c) characterized in that it contains to 100 parts by weight of the mineral oil o _f 2 - % of the dispersant and / or viscosity index improver . 9842 / U3?
BATH ORIGINAL