摘要:
The disclosed invention relates to lubricant or functional fluid compositions containing viscosity index improvers in the form of self-healing polymers. The polymers may comprise one or more cleavable linkages, such as one or more disulfide bonds and/or one or more diene/dienophile linkages, to permit the polymer to reform if cleaved during use.
摘要:
Various novel urazole compositions have been discovered that may be generally represented by formula (I), wherein T and Q may be the same or different and represent hydrogen, hydrocarbyl, sulfur, phosphorus, boron, a metal cation, acyloxy hydrocarbyl, imido hydrocarbyl, hydrocarbyl repeating units, hydrocarbyl urazole (I) containing repeating units, an acyl urazole repeating units, an acyl group, or hydrocarbyl acyl containing group, a repeating unit of an acyl group, a repeating unit of a hydrocarbyl acyl containing group, or together form a pi bond between the two nitrogen atoms and A is hydrogen, hydrocarbyl, a hydrocarbyl urazole I group, a repeating unit of a hydrocarbyl containing acyl group or a repeating unit of a hydrocarbyl containing acyl group which is bonded directly to or through a hydrocarbyl group to another urazole (I) group. These compositions may be formulated with functional fluids for use in motorized vehicles.
摘要:
Hydrocarbon compositions, including oligomers and polymers, for use in improving the thermo-oxidative stability and the dispersancy and viscosity index improvement (for high molecular weight) properties of fuels and lubricating oils are disclosed. These compositions are adducts of sulfur mono- and diimides having one of formulae (I), (II) (III) wherein R is a hydrocarbyl containing at least 18 carbon atoms, in which X= can be O=, S=, y'-N=, i is 0 or 1, -Y and Y'- can be (1), (2) (3), wherein R' is hydrocarbyl or hydrocarbyloxy, R'' is hydrocarbyl, R''' and R'''' are hydrocarbyloxy, and each of R', R'', R''', and R'''' is from 1 to 20 carbon atoms.
摘要:
The present invention relates to a lubricating composition containing an oil of lubricating viscosity and a dimercaptothiadiazole salt of a copolymer comprising units derived from monomers (i) an ?-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof (typically carboxylic acid groups or an anhydride), are partially esterified with an alcohol, or mixtures thereof, and wherein at least a portion of carboxylic acid groups not esterified are reacted with an amine. The invention further provides for a lubricating composition containing said copolymer. The invention further provides a method and use of lubricating composition in a mechanical device.
摘要:
Improved biodegradable and bioabsorbable BAB-block copolymers exhibiting reverse thermal gellation properties, and aqueous polymer compositions including the BAB-block copolymers, are provided. Methods of making the improved BAB-block copolymers and compositions including the same are also provided.
摘要:
Reaction products of hydrocarbylcarboxylic anhydrides and aminoalkanols can provide effective antiwear, antirust, and corrosion-inhibiting properties in lubricant and fuel applications.
摘要:
Various novel urazole compositions have been discovered that may be generally represented by formula (I), wherein T and Q may be the same or different and represent hydrogen, hydrocarbyl, sulfur, phosphorus, boron, a metal cation, acyloxy hydrocarbyl, imido hydrocarbyl, hydrocarbyl repeating units, hydrocarbyl urazole (I) containing repeating units, an acyl urazole repeating units, an acyl group, or hydrocarbyl acyl containing group, a repeating unit of an acyl group, a repeating unit of a hydrocarbyl acyl containing group, or together form a pi bond between the two nitrogen atoms and A is hydrogen, hydrocarbyl, a hydrocarbyl urazole I group, a repeating unit of a hydrocarbyl containing acyl group or a repeating unit of a hydrocarbyl containing acyl group which is bonded directly to or through a hydrocarbyl group to another urazole (I) group. These compositions may be formulated with functional fluids for use in motorized vehicles.