DE1644956A1 - Lubricating grease containing a colloidally dispersed clay coated with an aminoamide mixture after activation with a mineral acid - Google Patents

Description

M. ILMAMTfI JUIlViIIfO Often. vw * ~ - ~ _ .Ut

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SHELL · ΙΙΤΕΗίΑΤΙΟϊΑΙΕ BSSEARCH MAAT80HAPPIJ V.T. There “Hague, Netherlands

"Sobaierfatt, containing a colloidal pearlescent,

according to the AktlYleruog old a rear aura old a »"

AalAoaaldgaalaeb Übarsoganan fön ¹¹ (Znaats su patent. ·

(Patent application 8 95 701 I7o / 23o))

Ptioritlti 8. «LUMlda-Vr.i 600 061

Oaganetacd da · Patentee «... (patent application 8 95 701

ITö / 23o) aind lubricating greases, which are colloidally diapered, naoh the actirlerung old of a ltUeralafture old alnaa Aaiaoaaidgaalaoh oversoganas Ion and other ttblleba Zualtae included, where daa Aälnoaaldgaalaeh duroh Qavatsaa elnea 0 _e- 20 ~ ' ^ft * ^illur * ^{e # llieol; i} ·· " ¹ ^« Inas PolyHthjlaapolyaaln or Polyithylenpoljraainseniieoh manufactured is.

The main patent al · Auegangeaeterial fite dia Heratellung da · Aalnoaaldgaalaeha · eua überithen dar fonkoapoaaata The used Tetteäuregeaiech should contain mostly pettafturen, and it was vorzugawaia »« indeetena 80 %.

109816/172 «

According to the main patent, the lubricating greases are now modified in such a way that, when one is used, a SehmiertSlbasls coating agent containing synthetic lubricating oil is used for the ion activated with mineral acid which have been made using a mixture of coconut oil and falling oil fatty acids, i. of a fatty acid mixture, which has a relatively high proportion of unsaturated fatty acids, which is preferably more than 50 #.

The invention thus relates to a lubricating grease containing disperse a colloidally, after activating with a Mineral acid with a mixture of amino amides, The amino amide mixture has been prepared by converting a Cg ^ Q-iettsäuregemlsohes with a Polyäthylenpolymin or Polyäthylenpolyamineemieoh, as well as other usual ones

Additions according to patent (patent application 0 95 701 IVo / 23oi

which is characterized gekennseiohnet, DAED is üohmitrölbasis a synthetic lubricating oil and at least su "ψ 30 of one or more of the Dlestern Axelain- or sebacic acid with a primary O ^^ monoalkylaubstltuierten - alcohol is that Aminoamidgemisch Dafi from a eemiech of lokosnußöl- and Tallölfttteäuren made nc "la an amount of 45 -70 Qvm.-H, besogen on dsm Oewieht dry fones present and al DAFL it" more lusatssteffe 0.5 - 1> 5 3ew.-j * latrlumsebaoat and 0l5 -12 »ew.-flt eimes

Phtnylnaphthylaj ^ lns, seen ami dae OoMuttgewioht 4es fat, contains η

The base oil of the lubricating greases according to the invention can

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If desired, 70 - 50 Sew .- $ of one or more fatty acid esters of pentaerythritol, with the proviso that aie at least 30, preferably at least 4-0 wt contains at least one of the above-mentioned diesters of azelaic or sebacic acid. Optionally, the Lubricating oil base instead of one or more of the above-mentioned pentaerythritol esters 10-30% by weight of a polysiloxane oil contain. In this case, the Sehmier oil base must be used to 70-90, preferably at least 80 wt .- ^ from at least one of the azelaic diesters or sebacic diesters mentioned above. That is the shark oil base of the Synthetic lubricating oils according to the invention which form lubricating greases can, however, also consist of one or more of them consist of several of the above-mentioned diesters, preferably of practically pure 2 ~ 1; ethylhexyl azelainic acid esters.

The raw material of as thickening agents suitable for the invention greases clays can be a considerable base- * exchange capacity of preferably about 60 - about 100 föilliäquivalent exchangeable base per 100 grams of clay have. Examples of clays suitable as starting material are montmorillonites, in particular sodium, potassium, lithium and other bentonites, for example Wyoming bentonite, magnesium bentonite (heetorite) and saponite.

To make the surface acidic, the clay is preferably treated in hydrosclforai. The treatment is carried out with an acid, preferably an acid of phosphorus, in particular

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1644958

special phosphoric acid, carried out in an amount which at least corresponds to the base exchange capacity of the! clay »

Suitable freshly prepared aminoamides are viscous liquids, which turn into soft crumbly pastes when standing for a long time, which are easy to handle · The aminoamides can be achieved by heating the fatty acids for 1 to 4 hours with the polyethylene amines to a temperature of 200 - 225 ° C. The coconut oil fatty acid mixture

P contain saturated C ^ q_.j.-fatty acids, the tall oil fatty acid mixtures C ₁ , ,, «- fatty acids, which can contain one or more double bonds in the molecule. Preference is given to mixtures of tallow oil fatty acids which contain at least 50% by weight of fatty acids with at least one double bond in the molecule. In well-suited aminoamides, about 40 $, for example 35-45 $> of the amino nitrogen atoms capable of amide formation in the polyethylene polyamine used as the starting material are amidated.

For the position of the amino amides, it is advisable to use a Bottom product from the production of ethylenediamine

The polyethylene polyamine blend can be 20-80 Grew #, preferably contain less than 50% by weight of diethylenetriamine, The remainder consists of polyethylene polyamines with an average molecular weight of 220-450.

Phenylnaphthylamine is preferred as phenylnaphthylamine.

The founding of greases! ^v '-5mi »in ala -.other addi-

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»AtEe Oxidation stabilizer, κ.B. Diphenylamine or Phenothiazine and extreme pressure additives, e.g. Holybdenum disulfide, contain.

The example explains the invention example 1

From the ingredients listed in Table I below, a lubricant thickened with modified clay is made. bold * produced in the following way A suspension of 2 wt .- # Onea of gangue befreitenHaotcrlttonea in water at 71 ° C. Dar heated suspension, dilute phosphoric acid _t the Aminoaaid as Wasserbeständiglceitsverbesserer and sugesetzt the GrundBl "

When these components are completely disintegrated, they form

Gerineel or pearls, with an aqueous phase separating out at the same time. The excreted water is taken from the. Oerinseln are drawn off, which are then heated to 132 ° C, whereupon one slowly mixes in a white solution of the r "trium * tb" oet ". The mixture is kept up to 150 ° for 15 minutes and the water content is then reduced somewhat by evaporation. Phenyl-1-naphthyl is added to the hot mixture erain, '· «then cools down and« divides the grease

ι ι ι

finished by Miech ^ alzen. f \

OBiGlNAL ! ^ 3PH

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I6U956

table I.

■ Components Weight * Di-2-ethylhexyl acetate β7.75 Heat ride 5.75 Water resistance enhancer 3.44 ^U) Phosphoric acid . 0 _r 43 Phenyl-ß-naphthylamine 1.0 latriussebaoat 0.6 Pnenothiaiin 0.5 Diphenylaain 0.5 0.03

(ft) 1.72 fftw.-1 < one of the reaction products of polyethylene polyfinines and coconut oil fatty acids. 1.72% by weight of a beection product made from polyethylene polyesters and tall oil fatty acids »

The so produced vrt indungegeaHee Sohaievfett is one of the series in the specification MIL-G-23827-i. «Performed firm subject.

The values obtained are shown in the following table ΙΓ listed and! the corresponding setpoints of the MHh-0-23827 - * - | Spssification juxtaposed

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! Table II

According to the invention
Grease MII-Ö-
23827-A test Oxidation behavior in Ser bomb
at 9B, 9C 0.352 Max. 0.703 Pressure drop after 100 Sta., Kp / cffi 0.693 Max. 1.055. 500 hours, fcp / cm ² Water resistance at 37.8 ° G 0.75 Max. 20 Washed out Bchmierfetianenge
in good »w .- # 1.07 Max. 2 Loss of attenuation in 22 hours *
at 21.1 ⁰ C, wt .- # Low-temperature torque
at -73.3 C. 3830 Max. 5000 k
Starting torque, please 475 Max. 500 Jiaufdrehmoment, gladly High-temperature turbetriebaver-fealteia, 11504- Min. 1000 Time to Failure, hours "at
121.1 ⁰ C 59 Min. 30 Pressure absorption capacity (medium
Hertz ^f see surface pressure) Gear Wear, mg per
1000 revolutions 0.63 Max. 2.5 at 2.27 kp load 2.16 Max. 3.5 "4.54 kp" test
passed
(no corrosion) Copper corrosion in the bomb

The test results shown in Table II show that the lubricating grease according to the invention is excellent in every respect and particularly excellent in high resistance. Ti ^ f teatfÄratyrr-ii-ens ^ feften aufwaiet

10981671726

ORIGINAL H43? £ CTED

Claims (3)

ΐ e η ΐ a κ κ ρ γ ü e. h e 1. Lubricating grease containing a colloidally dispersed _r after activation aiit a Hineralaäure with an Amino-Smidgeniisch coated '!' On, the Aminoainidmixture by reacting a Cg ^ gQ-'Fettsaurgemismhss with a Polyäthylenpolyaadn or Polyäthyieiipolyamiiigem has been produced as well as isoh usual additives according to Patent '., ..,.,. * .. (Patent application B 95 701 IVo / 23c), characterized in ₅ that the lubricating oil base is a synthetic lubricating oil and at least 30 $> of one or more beasts of azelaic or sebacic acid with a monoalkyl-substituted primary C 1-10 alcohol, that the amino amide mixture has been prepared from a mixture of coconut oil and tall oil fatty acids and is present in an amount of 45-70% by weight, based on the weight of the dry clay _y and that it contains as v / urther additives 0.5 - 1 * 25 wt .- ^ sodium sebacate and 0.5 - * · λloht 12 wt .- ^ a PhenyInaphthy1amine, based on the total of the ^ SohmierfG ttes _r contains 2. Lubricating grease naoh claim I _5, characterized in that it as synthetic; . C'ines contains S or wehrrror Po.ulaerythriifülleäuveester 50 wt - lubricating oil Gominoh from 30 - 50 wt .- # a or r ** ehrej "" r the irenannten Dieater and 70. 3. Lubricating grease naoh /.iirjracht 1, dadui'ch marked, üab GB alö aynthetißohe.j i3chniej't> l a üiui: 3f: h from 70 - 90 Gk ^j v. '«· - or carrot ?. rr äer pev .--- \ m \ '-. '■ rj.i-ircor and ^ O- 10 diw- ¹ X 10981R / 1726 of a polysiloxane oil. 4, lubricating grease according to claim 1, characterized in that the lubricating oil component consists almost entirely of 2-ethylhexylpzelaic acid ester. 5 »grease according to any one of claims 1 to 3 _t characterized in that it contains azelaic and / or Sebaclnsäurediester from mono-C ^ -alkyl-butyl alcohols, especially 2-or 3-methylbutanol Butylbutanol. 10 9 8 16/1726