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US 5,665,683 AGranted
Lubricant and lubricant concentrate
AssigneeBremer & Leguil GmbH
InventorErasmus Froeschmann
Life of this patent
Estimating the term…
Abstract
Lubricant or lubricant concentrate on mineral oil and/or synthetic oil basis having improved lubricating properties, in particular improved load bearing, sliding and corrosion inhibiting properties, which contains a) one or more mineral oils and/or synthetic oils as base oil and b) at least one tetravalent to octavalent alcohol having at least one quaternary carbon atom as well as at least one ester bond in its molecule and having a density d.sub.20 of at least 0,900 and an enthalpy H of at least 350 kcal/kg, c) at least one asymmetric organometallic compound, d) at least one phosphor containing substance, e) at least one sulfur-containing substance and f) further usual additives.
Claims37
Lubricant comprising:
- (a) an oil base selected from the group consisting of a mineral oil, synthetic oil, and mixtures thereof,
- (b) at least one tetravalent to octavalent alcohol derivative having a density (d.sub.20) of at least 0.900 and containing at least one quaternary carbon atom in its molecule, said alcohol being selected from the group consisting of mono -, di -, and tripentaerythritols, all the alcoholic groups of which are esterified by a carboxylic acid containing a straight or branched alkyl, aralkyl or aryl group having 6 to 18 carbon atoms,
- (c) a sterically hindered phenol,
- (d) at least one dialkyldithiocarbarnate compound having the formula ##STR6## where Me is selected from the group consisting of B, V, Cr, Mo, W, Mn, Co, Ni, and mixtures thereof, and wherein each alkyl is an alkyl group having 4 to 8 carbon atoms,
- (e) at least one compound selected from the group consisting of dialkylaryl -, monoalkyldiaryl -, trialkyl - and triarylphosphite, wherein the alkyl group is straight, branched or cyclic and contains 8 to 12 carbon atoms and the aryl group is a phenyl group substituted in the o- or p-position by an alkyl group having 1 to 6 carbon atoms, and
- (f) a thiazole,
- wherein said component (b) is present in an amount of from 0.1 to 40% by weight, said component (d) present in a weight amount of from 0.1 to 10%, said component (e) present in a weight amount of from 0.1 to 5%, said component (f) present in a weight amount of from 0.1 to 5%, wherein said percent weight amounts are based on the weight of component (a).
4 more elements
Lubricant comprising
- (a) an oil base selected from the group consisting of natural oil, synthetic oil and mixtures thereof,
- (b) at least one tetravalent to octavalent alcohol derivative having a density (d.sub.20) of at least 0.900 and containing at least one quaternary carbon atom in its molecule, said alcohol being selected from the group consisting of mono -, di -, and tripentaerythritols, all the alcoholic groups of which are ethoxylated by ethylene oxide and then esterified by a carboxylic acid containing a straight or branched alkyl, aralkyl or aryl group having 6 to 18 carbon atoms,
- (c) a sterically hindered phenol,
- (d) at least one dialkyldithiocarbamate compound having the formula ##STR8## where Me is selected from the group consisting of B, V, Cr, Mo, W, Mn, Co and Ni, and wherein each alkyl is an alkyl group having 4 to 8 carbon atoms,
- (e) at least one compound selected from the group consisting of dialkylaryl -, monoalkyldiaryl -, trialkyl - and triarylphosphite, wherein the alkyl group is straight, branched or cyclic and contains 8 to 12 carbon atoms and the aryl group is a phenyl group substituted in the o-or p-position by an alkyl group having 1 to 6 carbon atoms, and
- (f) a thiazole,
- wherein said component (b) is present in an amount of from 0.1 to 40% by weight, said component (d) present in a weight amount of from 0.1 to 10%, said component (e) present in a weight amount of from 0.1 to 5%, said component (f) present in a weight amount of from 0.1 to 5%, wherein said percent weight amounts are based on the weight of component (a).
4 more elements
Lubricant comprising:
- (a) a polyglycol oil base,
- (b) at least one tetravalent to octavalent alcohol derivative having a density (d.sub.20) of at least 0.900 and containing at least one quaternary carbon atom in its molecule, said alcohol being selected from the group consisting of mono -, di -, and tripentaerythritols, all the alcoholic groups of which are ethoxylated by ethylene oxide and then esterified by a carboxylic acid containing a straight or branched alkyl, aralkyl or aryl group having 6 to 18 carbon atoms,
- (c) at least one dialkyldithiocarbamate compound having the formula ##STR9## where Me is selected from the group consisting of B, V, Cr, Mo, W, Mn, Co and Ni, and wherein each alkyl is an alkyl group having 4 to 8 carbon atoms,
- (d) at least one compound selected from the group consisting of dialkylaryl -, monoalkyldiaryl -, trialkyl - and triarylphosphite, wherein the alkyl group is straight, branched or cyclic and contains 8 to 12 carbon atoms and the aryl group is a phenyl group substituted in the o- or p-position by an alkyl group having, 1 to -6 carbon atoms, and
- (e) a thiazole,
- wherein said component (b) is present in an amount of from 0.1 to 40% by weight, said component (c) present in a weight amount of from 0.1 to 10%, said component (d) present in a weight amount of from 0.1 to 5%, said component (e) present in a weight amount of from 0.1 to 5%, wherein said percent weight amounts are based on the weight of component (a).
3 more elements
Lubricant comprising:
- (a) a polyglycol oil base,
- (b) at least one tetravalent to octavalent alcohol derivative having a density (d.sub.20) of at least 0.900 and containing at least one quaternary carbon atom in its molecule, said alcohol being selected from the group consisting of mono -, di -, and tripentaerythritols, all the alcohol groups of which are esterified by a carboxylic acid containing a straight or branched alkyl, aralkyl or aryl group having 6 to 18 carbon atoms,
- (c) at least one dialkyldithiocarbamate compound having the formula ##STR10## where Me is selected from the group consisting or B, V, Cr, Mo, W, Mn, Co, Ni, and mixtures thereof, and wherein each alkyl is an alkyl group having 4 to 8 carbon atoms,
- (d) at least one compound selected from the group consisting of dialkylaryl -, monoalkyldiaryl -, trialkyl - and triarylphosphite, wherein the alkyl group is straight, branched or cyclic and contains 8 to 12 carbon atoms and the aryl group is a phenyl group substituted in the o- or p-position by an alkyl group having 1 to 6 carbon atoms, and
- (e) a thiazole,
- wherein said component (b) is present in an amount of from 0.1 to 40% by weight, said component (c) present in a weight amount of from 0.1 to 10%, said component (d) present in a weight amount of from 0.1 to 5%, said component (e) present in a weight amount of from 0.1 to 5%, wherein said percent weight amounts are based on the weight of component (a).
3 more elements
Dependencies are inferred from the claim text.