摘要:
Use as a detergent in a lubricating oil composition of an oil-soluble hydrocarbyl phenol aldehyde condensate having the following structure: wherein n is 0 to 10, preferably 1 to 8, more preferably 2 to 6, and most preferably 3 to 5; Y is a divalent bridging group, and is preferably a hydrocarbyl group, preferably having from 1 to 4 carbon atoms; and R is a hydrocarbyl group having from 4 to 30, preferably 8 to 18, and most preferably 9 to 15 carbon atoms. The oil-soluble hydrocarbyl phenol aldehyde condensate has a weight average molecular weight (Mw) of 1250 to 1680, as measured by MALDI-TOF (Matrix Assisted Laser Desorption lonization- Time of Flight) mass spectrometry.
摘要:
The reaction product of a hydroxyaromatic compound, at least some of the units of which are hydrocarbyl-substituted, a carboxy-substituted aldehyde, and an aldehyde other than a carboxy-substituted aldehyde, provides an additive for lubricants as well as an intermediate for further reaction with amines, alcohols, or neutralization to form a salt.
摘要:
In a winding wire wherein an insulating layer (2) of a synthetic resin film is formed on a conductor (1) directly or with another insulation in between and a lubricant layer (3) is formed on the insulating layer (2), the lubricant layer (3) is made of an intimate mixture of natural wax as a major constituent and thermosetting and fluorocarbon resins compounded therewith.
摘要:
The present disclosure relates to polymers suitable for viscosity index improvers in lubricating oil compositions and further relates to oil compositions comprising such polymers. The disclosure also relates to polymer compositions derived from alkyl (meth)acrylate monomers and selected molar ratios of the (meth)acrylate monomers in the polymer suitable to use as viscosity modifiers.
摘要:
The invention provides a powder coating composition comprising of thermoplastic polymers, ceramic particles, and cermet particles for lowering the friction coefficient, and improving wear and corrosion resistance of coated surfaces in high-temperature, high-pressure, and corrosive environments. It also provides a method of coating application for improving adhesion of the coating to the substrate. The coating compositions are devoid of volatile organic solvents and can be applied on surfaces using thermal spraying, compression molding and other particle sintering approaches. A multilayer architecture consisting of an adhesive bottom layer and a non-adhesive, low friction top layer is disclosed. The coating can be used in oil and gas production and seawater injection.
摘要:
Provided is a water-based lubricating coating agent from which a lubricating coating film which has excellent corrosion resistance, workability, and film removability in practical use is obtained. A water-based lubricating coating agent characterized in that a water-soluble silicate (A) and at least one water-soluble inorganic salt (B) selected from the group consisting of a tungstate, a phosphate and a borate are blended such that the solid content mass ratio (B)/(A) falls within the range of 0.7 to 25.
摘要:
Linked aromatic compounds found to act as potent soot dispersants in lubricating oil compositions; lubricating oil compositions containing such soot dispersants and precursor compounds from which the soot dispersants are derived.