Abstract:
In a rolling bearing, a plurality of rolling elements are rollably retained by a retainer between an inner ring and an outer ring, while being substantially equidistantly arranged. The rolling bearing is filled with a grease composition which contains a base oil including of fluorocarbon polymer oil, and a thickening agent including a polytetrafluoroethylene. A conductive material is added in an amount of 0.1 to 10 wt %, based on the total weight of the grease composition, to the grease composition.
Abstract:
A phosphazene compound of the formula (1) or (5) which has an arrangement such that perfluoroxyalkylene units selected from —CF2O— and —CF2CF2O— are randomly distributed, the compound having a functional terminal group A or group G A—OCH2CF2O(CF2CF2O)p(CF2O)qCF2CH2O—A (1) G—[OCH2CF2O(CF2CF2O)p(CF2O)qCF2CH2OH]6-z (5) wherein A is a group of the formula (a) and G is a group of the formula (g) shown in the specification, and a lubricant containing at least one of the phosphazene compounds of the formulas (1) and (5).
Abstract:
A phosphazene compound of the formula (1) or (5) which has an arrangement such that perfluoroxyalkylene units selected from nullCF2Onull and nullCF2CF2Onull are randomly distributed, the compound having a functional terminal group A or group G AnullOCH2CF2O(CF2CF2O)p(CF2O)qCF2CH2OnullAnullnull(1) GnullnullOCH2CF2O(CF2CF2O)p(CF2O)qCF2CH2OHnull6-znullnull(5) wherein A is a group of the formula (a) and G is a group of the formula (g) shown in the specification, and a lubricant containing at least one of the phosphazene compounds of the formulas (1) and (5).
Abstract:
In a rolling bearing, a plurality of rolling elements are rollably retained by a retainer between an inner ring and an outer ring, while being substantially equidistantly arranged. The rolling bearing is filled with a grease composition which contains a base oil including of fluorocarbon polymer oil, and a thickening agent including a polytetrafluoroethylene. A conductive material is added in an amount of 0.1 to 10 wt %, based on the total weight of the grease composition, to the grease composition.
Abstract:
An improved lubricant for coating moving webs is provided. The lubricant includes a chemically modified lecithin, such as hydroxylated or acethylated lecithin, and a fatty ester to completely eliminate the need for a surfactant in the composition. The mixture avoids foaming while maintaining the coating structure, even at high speeds found in modern printing equipment and processes. The lubricant improves coating rheology and maintains coating structure. The lubricant maintains a homogeneous coating, even at high speeds, thus resulting in superior coating and paper characteristics.
Abstract:
A metal working oil composition, comprising, as a component (A), 25 wt. % or more of one or more zinc dithiophosphates represented by the following general formula (1): ##STR1## wherein R.sup.1 to R.sup.4 represent a hydrocarbon group and, if necessary, as a component (B), 0.1 to 50 wt. % of a molybdenum compound.
Abstract:
A synthetic ester composition exhibiting thermal and oxidative stability which comprises the reaction product of: a branched or linear alcohol having the general formula K(OH).sub.n, wherein R is an aliphatic or cyclo-aliphatic group having from about 2 to 20 carbon atoms and n is at least 2; and at least one branched mono-carboxylic acid which has a carbon number in the range between about C.sub.5 to C.sub.13 ; wherein the synthetic ester composition has between 5-35% unconverted hydroxyl groups, based on the total amount of hydroxyl groups in the branched or linear alcohol.
Abstract:
Lubricant base materials containing ester groups may be stabilised by adding a small quantity of carbodiimides and the service life of lubricants manufactured therefrom may be decisively extended.
Abstract:
A thin-film magnetic recording disc for use with a read/write head in a disc drive is disclosed. To reduce the static and dynamic frictional coefficients of the disc surface, the disc is coated with a lubricant layer composed of a mixture of a polyphenoxycyclotriphosphazene lubricant and a perfluoropolyether oil. Also disclosed is a lubricant composition containing these two components, as well as a method for improving the lubricating properties of a perfluoropolyether oil.
Abstract:
An antioxidant additive for an engine or propulsion system lubricant subjected to high temperatures which includes a high molecular weight substituted phenolic carboxylic acid tetraester of pentaerythritol. A lubricant blend which is capable of solubilizing the antioxidant additive and includes a polyolester, a phosphate ester and at least one of a polyalphaolefin and an alkylated naphthalene.