JPS60217298A - Grease composition containing boron compound and hydroxy-containing soap tackifier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel family of compositions, more particularly consisting of an oil, a hydroxyl-containing soap thickener, and an amine borate;
Synergistic grease compositions optionally containing phosphorus and sulfur components.

Greases thickened with metal salts of hydroxystearic acid, particularly lithium hydro(11)xystearate, are well known, as is the use of "additive packages". In addition to phosphorus and sulfur compounds, these packages contain
It is known that such greases contain other additives that impart properties such as antioxidant properties, detergency, and dispersibility.

It is also known from U.S. Pat. No. 4,328,113 that borated amines, such as borated hydrocarbyl mono- and di-amines, are effective as anti-friction agents in lubricants, especially lubricants. be. However, as mentioned here,
No prior art is known to teach or suggest that unexpected results can be obtained by combining known additive packages with special thickeners and borated amines according to the invention.

In the present invention, the grease vehicle which occupies the majority and the following formula: (12) Alkyl group, carbon number 2~
81 represents a C1 to C3 hydrocarbyl group including a hydroxyalkyl group having 4 to 20 carbon atoms, a polyalkoxylated group having 6 to 20 carbon atoms, and a corresponding group thereof containing sulfur or added oxygen, and at least one of R1, R3 and R4 is a hydrocarbyl group. group, that is, R2 is not hydrogen, but C7~
C4 alkylene group) and boric acid, boron oxide, metaborate ester, similar boron source or the following formula: % formula %) (where y is 1 to 3 and 2 is θ ~2 demeri, V and 2
(R1 represents an alkyl group having 1 to 6 carbon atoms) and a small amount of the compound produced by the reaction with a boron compound. The present invention comprises thickening with a hydroxyl-containing soap thickener to provide an improved grease composition having a high dropping point. The presence of the (13) components of phosphorus and sulfur results in uniformly high dropping points. Alkyl borates include monoalkyl borates, dialkyl borates and trialkyl borates, ie, esters of methyl, ethyl, furobil, methyl, pentyl and hexyl borates.

Preferably, the amine is hyperborated. "Excess boration" means that more than the stoichiometric amount of boron with respect to the amine is present in the boronation product.

The borated amines of the present invention can be prepared by reacting amines of the above formula with boron compounds such as boron oxide, boric acid, alkyl borates or mixtures thereof. The resulting product is believed to be primarily amine borate, although other products believed to be present include metaborates and the like. The range of amines covered by the above formula includes (1) for example hexylamine, octylamine, nonylamine, decylamine, dodecylamine, tetradecylamine, octadecylamine, eicosylamine, triacontylamine, oleyl (14) amine, Primary amines such as stearylamine, instearylamine, tallow amine and soybean amine; (2) having two identical groups or two different groups;
); (3) Corresponding tertiary amines in which all groups in the same molecule are the same or different; and (4) For example, N-octyl-1,2-ethylenediamine, N-octyl-1,3-propylene Diamine, N-coco-1,2-
ethylenediamine or N-coco-1,3-7'ropylenediamine, N-oleyl-1,2-ethylenediamine or N-oleyl-1,3-propylenediamine,
N-Shiya-1,2-ethylenediamine or N-Shiya-1,3-propylenediamine and N-tallow-1,2-
Diamines such as ethylene diamine or N-tallow-1,3-propylene diamine. The tertiary amine is N-
These include ethyl-N-oleylamine, N-methyl-N-soyamine, tertiary amines include N, and N-diethyl-N-oleylamine.

The alkoxylated amine ζ included in the present invention is (15
) ' Bis(2-hydroxyethyl)oleylamine, bis(
2-hydroxypropyl]oleylamine, bis(2-
(hydroxyethyl) tallow amine, bis(2-hydroxypropyl) tallow amine, (hydroxyethyl) (hydroxypropyl) tallow amine, polyethoxylated oleylamine (containing 7 ethoxyl groups) and polyethoxylated tallow amine (containing 3 ethoxyl groups) group). Also included are hydroxyalkylamines prepared by ethoxylation or propoxylation of hydrocarbyl diamines or hydrocarpyl triamines. In particular, aromatic and alkyl- or alkylene-substituted aromatic amines having 6 to 30 carbon atoms are also included. Also included are alkoxyalkylamines, such as, for example, dodecyloxypropylamine, triindecyloxypropylamine and similar oxygen-containing amines, as well as corresponding alkoxydiamines, such as, for example, N-alkoxyhydrocarbyleneamines.

The reaction to form a borated amine or ester (16) is carried out at a temperature of about 0°C to about 260°C, preferably at a temperature of about 10°C to about 180°C. The temperature is selected primarily depending on the particular reactants and whether a solvent is used. The reaction pressure can be vacuum, atmospheric pressure or positive pressure. When carrying out this reaction, the amounts of reactants are selected such that the molar ratio of amine to boron compound is from about 0.2 to about 2, preferably from about 0.5 to about 0.9. desirable. The amine can be reacted with an excess of the borating agent to form a borated amine containing from about 0.1% by weight of boron to as much as 10% by weight or more.

It is generally preferred that the reaction pressure be at atmospheric pressure, but about 1
The reaction can advantageously be carried out at pressures from atm. to about 5 atm. If conditions permit,
A solvent can be used. Relatively non-polar, unreactive solvents can be used, including the common di-, benzene, toluene, xylene and di-1,4-dioxa. Other hydrocarbon solvents can be used, including alcoholic solvents such as furopanol, butanol, hexamethylene (17) glycol, and the like. Mixtures of alcoholic and hydrocarbon solvents can also be used.

Reaction time is not critical; any step of the process can be carried out in a time period of from about 1 hour to about 20 hours.

In preparing the grease of the present invention, it is desirable to use a narrow range of thickening agents. Preferred thickeners include those containing at least small amounts of alkali metal, alkaline earth metal, or amine soaps of hydroxyl-containing fatty acids, fatty acid glycerides, and fatty acid esters containing from 12 to about 30 carbon atoms per molecule. Contains adhesive. Preferred metals include sodium, lithium, calcium and barium, with lithium being particularly preferred. Preferred among these acids and aliphatic materials are 12-hydroxystearic acid and glycerides, esters including 12-hydroxystearate, 14-hydroxystearic acid, 16-hydroxystearic acid, and 6-hydroxystearic acid. .

(111) It is not necessary that the entire amount of thickener be selected from among the preferred thickeners described above. Clear benefits are obtained by selecting as much as about 15% by weight of the total thickeners among such thickeners. Complementary to this is the child's weight of 85 weight 9
A wide variety of thickeners can be used in the greases of the present invention as thickeners. Other useful thickeners include methyl-12-hydroxystearate, C1-c
, alkali metal soaps and alkaline earth metal soaps of dicarboxylic acid diesters and tall oil or marine oil fatty acids. Other alkali or alkaline earth metal salts of fatty acids having 12 to 30 carbon atoms and containing no free hydroxyl groups may also be used.

These also include stearic and oleic acid soaps.

Other thickeners include calcium acetate-stearate (U.S. Pat. No. 2,197,263), barium acetate-stearate (U.S. Pat. No. 2,564,561), and barium acetate-caprylate-stearate. Calcium phosphate complexes (U.S. Pat. No. 2.999.065), calcium acetate-caprylate (U.S. Pat. No. 2.999,066) and calcium salts of low, medium and high molecular weight acids and walnut oil acids. and salt extraction complexes and salt-soap complexes, such as soap and soap.

Another group of thickeners consists of urea substitutes, phthalocyamines, indanthrenes and pigments such as perylimide, pyromellidiimide and ammeline, as well as types of hydrophobic clays. These thickeners are initially made from hydrophilic clays and are often pretreated with organic cationic surfactants, such as onium compounds, before these clays are used as components of grease compositions. hand,
It can be produced by introducing long-chain hydrocarbon radicals onto the surface of clay particles to convert them into a hydrophobic state. Typical onium compounds include tetraalkylammonium chlorides, such as dimethyldioctadecylammonium chloride, dimethyldibenzylammonium chloride, and mixtures thereof. Since this method of conversion is well known to those skilled in the art, it is considered not to require further consideration and does not form part of the present invention.

The production of thickeners can be carried out in various grease production apparatuses, such as open kettles at reduced, atmospheric and positive pressures; high-pressure reaction chambers operated at pressures of the order of 180 paig; or continuous reactors. There are things you can do.

can. The temperature range of the grease mass during production is 15°C (60°C
'F) to 2380 (460''F).

Third components that may be present in the grease composition are small amounts of phosphorus and sulfur. Both phosphorus and sulfur have the formula:
is a hydrocarbyl group having 3 to 18 carbon atoms, M is a metal or a nonmetal, n is the valence of M, and Z is oxygen or sulfur, and at least one of Z is sulfur). or in the same molecule, such as nonmetallic phosphorodithioates (21).

In this compound, R6 is preferably an alkyl group, which can be a propyl, butyl, pentyl, hexyl, octyl, decyl, dodecyl, tetradecyl or octadecyl group, propatool, isopropanol, butanol, isobutanol, alkaryl groups, including groups derived from dibutanol, 4-methyl-2-pentanol, 2-ethylhexanol, oleyl alcohol and mixtures thereof, as well as butylphenyl, octylphenyl, nonylphenyl and dodecylphenyl groups. Also includes groups.

The metals represented by M include metals of Group ⅠA, Group 1IT, Group MB, and Group Ⅰ of the Periodic Table. Some examples that can be mentioned are lithium, molybdenum,
These are sodium, calcium, zinc, cadmium, silver and gold. Nonmetal ions include those derived from vinyl esters such as vinyl acetate, vinyl ethers such as butyl vinyl ether, epoxides such as propylene oxide and 1,2-epoxide dodecan, and monoamine salts. Contains organic groups. Such non-metallic ions also include nitrogen ions such as groups derived from hydrocarbylamines and diamines, including oleylamine and N-oleyl-1,3-propylene diamine, and groups derived from l-imidacyline and oxazoline. Containing groups are included.

Phosphorus and sulfur are, for example, (1) 2 to 2 to each hydrocarbyl group;
dihydrocarbyl phosphite or phosphite mixtures having 10 carbon atoms; and (2) sulfides such as imbutylene sulfide, dibenzyl disulfide, terpene sulfide, phosphorodithionyl disulfide and jojoba oil sulfide. It can also be supplied from a combination of two compounds, such as a combination. Such phosphite esters include phosphite esters such as dibutyl phosphite, dihexyl phosphite, dioctyl phosphite, and didecyl phosphite. Phosphate esters containing from 4 to 20 carbon atoms in each hydrocarbyl group can also be used, such as tributyl phosphate, tridecyl phosphate, tricresyl phosphate and mixtures of such phosphate esters. .

In summary, in the practice of the present invention, which results in a grease with greatly improved dropping point, it is important to incorporate at least the first two of the above-mentioned components into the composition.

Thus, first of all, for the manufacture of grease, at least about 15" of thickener is added to the metallic or non-metallic hydroxyl-containing soap, and the total amount of thickener is about 3" of the total grease composition. Weight% to about 20% by weight.

Next, a borated amine, preferably such as obtained by reacting the amine with at least an equal amount of a boron compound, is
．． 0.01% to about 10% by weight, preferably about 0.01% to about 10% by weight.
Added to the grease in amounts of 1% to about 2% by weight.

Additionally, as an optional third component, the composition may contain a phosphorus-containing and a sulfur-containing compound or a mixture of two or more compounds such that small amounts of phosphorus and sulfur can be separately provided. %, preferably 0.
It can be present in amounts from 2% to about 2% by weight. If separate compounds are used, a mixture in amounts equal to the above concentration levels is used to provide the desired amounts of phosphorus and sulfur.

When hydroxyl-containing thickeners are used in conjunction with borated amines, the increase in grease quality compared to greases made from the same grease vehicle and the same borated amine with different thickeners, e.g., non-hydroxyl-containing thickeners. It was noted that the dropping point was always unexpectedly high.

In general, the reaction products of the present invention can be used in an effective amount (25) to provide the desired friction reduction, wear resistance, rust protection, high temperature stability, or rust resistance. can. Additionally, in many applications, borated amines and phosphorus-containing compounds and/or sulfur-containing compounds may be added from about 0.02% to about 2% by weight of the total composition.
Combined amounts of 0% by weight, preferably from about 0.2% to about 4% by weight can be effectively used.

The grease of the invention can be made from mineral or synthetic oils, or mixtures thereof. Generally, both mineral oils, paraffinic oils and naphthenic oils, and mixtures thereof, are approximately 445 SS in 100'Ff.
100 minutes from U? up to about 60,008SU at 210″F, preferably from about 50EiSU at 210″F to about 250F
A lubricant having a suitable lubricating viscosity range, such as up to iSU, is used.

These oils can have a viscosity index ranging up to about 100 or more, but 1. Oils having a viscosity index of about 70 to about 95 are desirable. The (26) average molecular weight of these oils ranges from about 250 to about 800.

When manufacturing grease, the lubricating oil that is the raw material for the manufacture of grease is strained to determine the desired amounts of thickeners and other additive components to be included in the grease composition, and then the balance of the entire grease composition is determined. used in sufficient quantities to maintain

Compounds of this type can be used with good results when synthetic oils are desired over mineral oils. Typical synthetic vehicles include polyisobutylene, polybutene, hydrogenated polydecene, polypropylene glycol, polyethylene glycol, trimethylolpropane ester, neopentyl ester, 72 erylily, 72 eryly, 72 sinoacid di( 2-ethylhexyl), di(2-ethylhexyl) adipate, dibutyl phthalate, carbon fluoride, silicate ester, silane, phosphorus-containing acid ester, liquid urea, ferrocene derivative, hydrogenated synthetic oil, linear polyphenyl, Included are siloxanes and silicones (polysiloxanes), and alkyl-substituted diphenyl ethers substituted by butyl-substituted bis(p-phenoxyphenyl) ethers, phenoxyphenyl ethers.

The metallic soap grease compositions described herein containing one or more borated amines and optionally one or more sulfur and phosphorous combinations can increase dropping point and improve grease consistency. It favors improved rust resistance and provides anti-fatigue, anti-wear and anti-oxidation benefits not available with prior art greases.

The grease of the present invention is unique in that it is preferably produced by mixing an additional amount of boric alcohol with completely cloudy soap after saponification.

The invention will be explained in more detail with reference to the following examples, which are intended to be merely illustrative.
□ Not intended to limit the present invention Example I N-oleyl-1,3-propylene diamide (obtained from Armac Chemical Co., Ltd. as Duomine O) 129
5g, Kijiregi 218L Loubutanol 437y,
658g hexamethylene glycol and 1210g boric acid
The mixture of g was charged to a reactor equipped with a Dean-Stark tube with a heater, stirrer and condenser and refluxed for about 10 hours until all that formed during the reaction was azeotropically distilled ( The maximum temperature was approximately 195°C).

The solvent was removed by vacuum distillation at 195° C. and the product was filtered and then diluted with an equal volume of 100 seconds process oil to form a 50% concentration of borated diamine in mineral oil. The concentrate was an orange colored viscous oil.

Example 2 N-tallow-1,3-propylene diamine (obtained from Armac Chemical Co. as Duomy/T) was borated with boric acid as generally described in Example 1. For convenient handling, borated N-beef tallow-1,3
- Propylene diamine was mixed with an equal volume of 100 second process oil to form a 50% concentrate in mineral oil. .

m NJ 12-hydroxystearic acid grease thickener (8%
Lithium hydroxystearate (glyceride) thickener was prepared by kerifying a mixture containing (9%) and its glyceride (9%) with lithium hydroxide in mineral oil in a closed contactor at about 177°C. Manufactured.

Example 4 After the grease was depressurized and dewatered in an open kettle, sufficient mineral oil was added to reduce the thickener concentration to about 9.0%. about 9
After cooling to 9℃, amine/antioxidant, phenolic antioxidant, metal dithiophosphate (alkyl group is carbon
A typical zinc dialkyl phosphorodithioate derived from a mixture of 1-C6 primary alcohols (1.5% by weight), a sulfur-containing metal deactivator and a nitrogen-containing anti-rust additive. Added a new grease additive package.

Example 5 To the base grease of Example 4 at about 110<0>C was added 05% borated N-oleyl-1,3-propylene diamine of Example 1.

Example 6 To the Example 40 base grease was added 1.0% by weight of the borated N-tallow-1,3-propylene diamine of Example 2 at about 115°C.

Example 7 Borated N of Example 1 was added to the base grease of Example 3.
-oleyl-1,3-propylenediamine 0.5% by weight
added.

Example 8 The same procedure as Example 7 was carried out except that 2% by weight of amine borate was used.

Example 9 A base grease was thickened with a 50,750 (by weight) lithium soap mixture of stearic acid and valmitic acid, a non-hydroxyl-containing thickener.

Example 10 50% by weight of the base grease used in Example 4 plus 50% by weight of the grease of Example 9 containing a 50150 mixture of hydroxyl-containing and non-hydroxyl-containing thickeners
weight%.

Example 9 containing 2% by weight of the borated amine of Example 2
0 base grease.

The results obtained by the ASTM D2265-78 grease dropping point test are shown in the following table.

Table 1 Example 3 199 Example 4 200 Example 5 310 Example 6 300 Example 7 236 Example 8 258 Example 9 209 Example 10 190 Example 11 207 Examples 5 and 6 are phosphorus and sulfur sources. Figure 1 shows the significant effect on dropping point improvement when adding borated amines to hydroxyl-containing carboxylate soap thickeners in the presence of hydroxyl-containing carboxylate soap thickeners.

Examples 7 and 8 demonstrate the significant effect on greases thickened with hydroxyl-containing carboxylate soaps when using the borated amines described above.

Examples 9, 10 and 11 show that borated amines do not have any advantage on the dropping point of greases thickened with hydroxyl-free carboxylate soaps.

Patent applicant Mopilsha Oil Corporation (5 others)

Claims (1)

[Scope of Claims] 1) Predominantly grease vehicle and the following formula: (wherein, Hydrocarbyl group, carbon number 2
-4 hydroxyalkyl groups, C6-20 polyalkoxylated groups, or groups listed in the latter containing sulfur or additional oxygen, R% n 1 , n B and R
At least one of 4 is not a hydrogen group, and R1 is C7-C
The reaction product obtained by reacting the amine represented by (alkylene group of 4) with a boron compound is about 0
．． A grease composition comprising from 0.1% to about 10% by weight, wherein the grease is thickened by at least about 15% by weight of a thickening agent comprising a droxyl-containing soap thickener. 2) about 0.61% by weight of a compound containing both phosphorus and sulfur or a mixture of a phosphorus-containing compound and a sulfur-containing compound;
The composition of claim 1 further comprising up to about 10% by weight to provide equal amounts of phosphorus and sulfur. 3) The composition according to claim 1, wherein the thickener is an alkali metal, alkaline earth metal or amine soap, fatty acid glyceride or fatty acid ester of a hydroxyl-containing fatty acid having 12 to 30 carbon atoms. 4) The composition according to claim 3, wherein the metal is sodium, lithium, calcium or barium. 5) Claims in which the thickener is derived from 12-hydroxystearic acid, 14-hydroxystearic acid, 16-hydroxystearic acid, 6-hydroxystearic acid, or glycerides or esters thereof. A composition according to scope 3. 6) R, R'', R3 and R4 are hydrogen or have 6 to 2 carbon atoms
2. The composition of claim 1, wherein there are 0 alkyl groups, at least one of which is not hydrogen. 7) Amines: (1) Hexylamine, octylamine, nonylamine, decylamine, dodecylamine, tetradecylamine, octadecylamine, eicosylamine, triacontylamine, oleylamine, stearylamine, isostearylamine, tallow amine, soybean amine , (2) Having two groups that are the same or different from each other (1)
(3) corresponding tertiary amines in which all groups in each molecule are the same or different, or (4) N-octyl-1,2-ethylenediamine, N
-Octyl-1,3-propylenediamine, N-coco-
1,2-ethylenediamine, N-coco-(3) 1,3-propylenediamine, N-oleyl-1,2-
Ethylenediamine, N-oleyl-1゜3-propylenediamine, N-soybean-1*2-ethylenediamine,
N-soybean-1,3-propylenediamine, N-beef tallow-1
, 2-ethylenediamine, N-tallow-1,3-propylenediamine, N-ethyl-N-oleylamine, N-methyl-N-soybean amine, N,N-diethyl-N-oleylamine, bis(2-hydroxy ethyl)oleylamine, bis(2-hydroxypropyl)oleylamine,
Bis(2-hydroxyethyl) tallow amine, bis(2-
(hydroxypropyl) tallow amine, (hydroxyethyl) (hydroxypropyl) tallow amine, polyethoxylated oleylamine containing 7 ethoxyl groups, polyethoxylated tallow amine containing 3 ethoxyl groups, hydrocarbyl diamine or hydrocarpyl A composition according to claim 1 comprising a hydroxyalkylamine, dobcyloxyprobylamine or triindecyloxy(4)dipropylamine prepared by ethoxylation or propoxylation of a triamine. 8) Boron compounds can be added to boric acid, boron oxide, metaborate, monomethyl borate, dimethyl borate and trimethyl borate, monoethyl borate, diethyl borate and triethyl borate, monopropyl borate, dipropyl borate and boron. The composition of claim 1 selected from the group consisting of tripropyl borate, monopentyl borate, dipropyl borate and tripropyl borate, and monohexyl borate, dihexyl borate and trihexyl borate. 9) The composition according to claim 8, wherein the boron compound is boric acid. 10) The following formula: (wherein, R6 is a hydrocarbyl group having 3 to 18 carbon atoms, M is a metal or nonmetal, nFi, the valence of M and z
A composition according to claim 1, wherein the phosphorus and sulfur components are supplied by a phosphorothioate represented by 1d oxygen or sulfur, at least one of which is sulfur. 11) The composition according to claim 10, wherein R' is an alkyl group or an alkylaryl group. 12) n''caf'lopyl, butyl, pentyl, hexyl, octyl, dodecyl, tetradecyl or octadecyl, butylphenyl, octylphenyl, nonylphenyl, dodecylphenyl, mot, <haoleyl group or a mixture thereof; Composition according to item 11. 13) R” Caflobanol, Impropatol, Butanol, Isobutanol, Sec-Butanol, 4-Mef
13. The composition of claim 12, wherein the group is derived from 2-pebutanol, 2-ethylhexanol or a mixture thereof. 14) The composition according to claim 10, wherein M is a metal of Group 1A, Group ⅠA, Group MB or Group 1 of the Periodic Law. (6) 15) The metal is lithium, sodium, silver, molybdenum,
The composition according to claim 14, which contains calcium, zinc, cadmium or gold. 16) Claim 1, which is a group derived from M-vinyl acetate, butyl vinyl ether, fluorobilene oxide, 1,2-epoxide dodecane or a nitrogen-containing compound
Composition according to item 0. 17) Compounds of: (1) dihydrocarbyl phosphites containing 2 to 6 carbon atoms in each hydrocarbyl group, mixtures of such phosphites, or 4 carbon atoms in each hydrocarbyl group;
(2) a sulfide selected from the group consisting of imbutylene sulfide, dibenzyl disulfide, terpene sulfide, phosphorodithionyl disulfide, and jojoba oil sulfide; A composition according to claim 1, wherein phosphorus and sulfur components are provided. 18) The composition according to claim 17, wherein the phosphite is a dibutyl, dihexyl, dioctyl or didecyl ester of phosphorous acid, or a mixture thereof. 19) The composition according to claim 17, wherein the phosphoric acid ester is a tributyl, tridecyl or tricresyl ester of phosphoric acid or a mixture thereof. 20) The amine is N-oleyl-1,3-propylene diamine, the boron compound is boric acid, and the thickener is 1
A composition according to claim 1, wherein the 2-hydroxystearate ester, phosphorus and sulfur are provided by a C5-C, zinc alkylphosphorodithioate. 21) The amine is N-tallow-1,3-propylenethia (8
), the boron compound is boric acid, the thickener is lithium 12-hydroxystearate, and the phosphorus and sulfur components are provided by zinc alkyl phosphorodithionate. Composition of. 22) A composition according to claim 1, wherein the grease vehicle is mineral oil. 23) The composition of claim 1, wherein the grease vehicle is a synthetic oil. 24) The composition of claim 1, wherein the grease vehicle is a mixture of mineral and synthetic oils. 25) Boron compound, metaboric acid ester, boric acid,
Boron oxide and the following formula: % formula % () (In the formula, V is 1 to 3, 2 is 0 to 2, V and 2
The composition according to claim 1, wherein the composition is selected from the group consisting of alkyl borates represented by the formula (9) where the sum of 3 is 3; R5 represents an alkyl group having 1 to 6 carbon atoms. 26) The composition of claim 1, wherein the total amount of thickener ranges from about 3% to about 10% by weight of the total grease composition. 27) The grease vehicle that occupies the majority and the following formula: (
In the formula, X is 0 to 2, Rs R'', B s and R
The number is hydrogen, or a hydrocarbyl group having 1 to 30 carbon atoms,
Hydroxyalkyl group having 2 to 4 carbon atoms, 6 to 20 carbon atoms
polyalkoxylated groups or groups mentioned in the latter with sulfur or additional oxygen, R, R"R" and R4
At least one of them is a group other than hydrogen, and R2 is C
The reaction between an amine and a boron compound (which is a 2-C4 alkylene group)
O) from about 0.01% to about 10% by weight of the reaction product produced by
A method for improving the dropping point of a grease composition comprising a heavy fluorescent compound comprising thickening the grease composition with a thickener containing at least 15% by weight of a hydroxyl-containing soap thickener. 28) The grease composition further contains a compound containing both phosphorus and sulfur, or a mixture of a phosphorus-containing compound and a sulfur-containing compound, in an amount of from about 0.01% to about 10% by weight to provide isometric phosphorus. and sulfur. Claim 2
The method described in Section 7.