摘要:
A urea-urethane grease composition contains, as essential ingredients, a thickener and a lubricant base oil. The thickener contains a urea-urethane mixture having a composition including 20 to 99, mol.% of a diurea comoound reoresented bv the aeneral formula (I) of 4 to 30 mol.% of a urea-urethane compound represented by the general formula and 1 to 50 mol.% of a diurethane compound represented by the general formula wherein R 1 represents a difunctional aromatic hydrocarbon residue having 6 to 15 carbon atoms, R 2 a cyclohexyl group or a group derived from cyclohexyl and having 7 to 12 carbon atoms and R 3 an alkyl group or an alkenyl group having 8 to 20 carbon atoms. The ratio of the numbers of amino groups R 2 -NH-to those of alkoxy groups R 3 -O-in the mixture being 95 / 5 to 40/60. The thickener is contained in an amount of 2 to 25 wt.% based on the total weight of the grease composition.
摘要:
A grease composition for a constant velocity joint involves a base oil containing a thickener and boron nitride powders and optionally an organozinc compound.
摘要:
A diurea grease composition contains a base oil and 2 to 25 wt.%, based on the total weight of the composition, of a diurea compound, the diurea grease compound being produced by reacting a mixed system of two or more different diisocyanates represented by the formula (I) OCN-R-NCO wherein R stands for a straight-chained or branched alkylene group, a straight-chained or branched alkenylene group, a cycloalkylene group or an aromatic group, with an amine compound of a primary amine represented by the formula (II) R₁-NH₂ wherein R₁ stands for a hydrocarbon residue having 6 to 20 carbon atoms, a secondary amine represented by the formula (III) wherein R₂ and R₃ each stand for hydrocarbon residues having 6 to 20 carbon atoms, or mixtures thereof.
摘要:
A urea-urethane grease composition contains, as essential ingredients, a thickener and a lubricant base oil. The thickener contains a urea-urethane mixture having a composition including 20 to 99, mol.% of a diurea comoound reoresented bv the aeneral formula (I) of 4 to 30 mol.% of a urea-urethane compound represented by the general formula and 1 to 50 mol.% of a diurethane compound represented by the general formula wherein R 1 represents a difunctional aromatic hydrocarbon residue having 6 to 15 carbon atoms, R 2 a cyclohexyl group or a group derived from cyclohexyl and having 7 to 12 carbon atoms and R 3 an alkyl group or an alkenyl group having 8 to 20 carbon atoms. The ratio of the numbers of amino groups R 2 -NH-to those of alkoxy groups R 3 -O-in the mixture being 95 / 5 to 40/60. The thickener is contained in an amount of 2 to 25 wt.% based on the total weight of the grease composition.
摘要:
A grease composition for a constant velocity joint involves a base oil containing a thickener and boron nitride powders and optionally an organozinc compound.
摘要:
A grease composition comprises a base oil selected from the group consisting of mineral lubricant base oils, synthetic lubricant base oils and mixtures thereof, (A) 2 to 25 wt%, based on the total weight of the composition, of a thickener selected from the group consisting of urea compounds, urea-urethane compounds, urethane compounds and mixtures thereof and (B) 0.2 to 5.0 wt.%, based on the total weight of the composition, of an ingredient selected from the group consisting of oxidized paraffins, diphenylhydrogen phosphite, hexamethyl phosphoric triamide and mixtures thereof.
摘要:
This invention relates to a filling grease composition for automobile wire harness connector which comprises a petroleum oil having an initial boiling point of 400°C or more and a gelling agent having the general formula: wherein R is a divalent aromatic group represented by a member: as essential components, and a content of said gelling agent ranging from 5 to 50% by weight on the basis of the whole composition.
摘要:
This invention relates to a filling grease composition for automobile wire harness connector which comprises a petroleum oil having an initial boiling point of 400 DEG C or more and a gelling agent having the general formula: wherein R is a divalent aromatic group represented by a member: as essential components, and a content of said gelling agent ranging from 5 to 50% by weight on the basis of the whole composition.
摘要:
A grease composition for a high speed anti-friction bearing contains, in a synthetic lubricant base oil, (A) 2 to 30 wt.% of a thickening agent consisting of an urea compound, (B) 0.2 to 30 wt.% of sorbitan monooleate, (C) 0.2 to 3.0 wt.% of barium sulfonate, and (D) 0.2 to 3.0 wt.% of barium lanolate, as indispensable components, each weight percentage being based on the total weight of the composition.
摘要:
A grease composition comprises a base oil selected from the group consisting of mineral lubricant base oils, synthetic lubricant base oils and mixtures thereof, (A) 2 to 25 wt%, based on the total weight of the composition, of a thickener selected from the group consisting of urea compounds, urea-urethane compounds, urethane compounds and mixtures thereof and (B) 0.2 to 5.0 wt.%, based on the total weight of the composition, of an ingredient selected from the group consisting of oxidized paraffins, diphenylhydrogen phosphite, hexamethyl phosphoric triamide and mixtures thereof.