摘要:
Synthetic lubricant base stocks comprising reduced oligomers prepared from an olefin composition comprising a linear olefin having from 10 to 24 carbon atoms additionally contain an alkyl-substituted cyclohexanol or alkyl-substituted decahydronaphthalene, whose alkyl groups have 10 to 24 carbon atoms. These base stocks are prepared by contacting the olefin composition and phenol or naphthalene with an acidic montmorillonite clay and hydrogenating the resulting oligomer mixture.
摘要:
A tubular threaded joint for connecting tubing or casing used to excavate oil wells have a lubricating coating formed from a lubricating coating composition comprising one or more basic lubricants selected from a basic sulfonate salt, a basic salicylate salt, a basic phenate salt, and a basic carboxylate salt and having biodegradability value (BOD) of at least 20% when measured after 28 days in seawater. The joint can be used without application of a compound grease containing heavy metals even in a country or region having severe environmental regulations.
摘要:
A synthetic oil composition comprising the reaction product of an α-olefin oligomer derived from an α-olefin monomer containing from 6 to 20 carbon atoms and from 0.01 to 1 mole of a phenol per mole of oligomer. The oil composition can be further reacted to form alkoxylated products and can be mixed with polar additives to form homogeneous synthetic lubricants.
摘要:
Synthetic lubricant base stocks comprising reduced oligomers prepared from an olefin composition comprising a linear olefin having from 10 to 24 carbon atoms additionally contain an alkyl-substituted cyclohexanol or alkyl-substituted decahydronaphthalene, whose alkyl groups have 10 to 24 carbon atoms. These base stocks are prepared by contacting the olefin composition and phenol or naphthalene with an acidic montmorillonite clay and hydrogenating the resulting oligomer mixture.
摘要:
A lubricant composition for lubricating an interface between an inner surface of a tire and a safety support ring in a run-flat tire system that includes a lubricating agent selected from glycerol, polyalkylene glycol or combinations thereof and a thixotropic agent. The thixotropic agent is an organoclay comprising a mineral clay mixture treated with an alkyl quaternary ammonium salt, wherein the mineral clay mixture comprises at least one of sepiolite, palygorsl¬te and a smectite and wherein a combined amount of palygorskite and sepiolite in the mineral clay mixture is between about 50 wt. % and about 100 wt. % with a balance of the mineral clay mixture being essentially the smectite. The lubricating agent may also be selected from a copolymer that is a mixture of alkylene oxides, preferably a mixture of ethylene oxide and propylene oxide.
摘要:
A threaded joint for steel pipes comprised of a pin 1 and a box 2 each having a threaded portion (1a, 2a) and an unthreaded metal contact portion (1b, 2b) exhibits adequate leakage resistance and galling resistance when used for makeup of oil country tubular goods with application of a green dope or even without any dope. The threaded joint has a first plating layer of Sn-Bi alloy plating or Sn-Bi-Cu alloy plating formed on the contact surface of at least one of the pin 1 and the box 2. The first plating layer may have a second plating layer selected from Sn plating, Cu plating, and Ni plating on its lower side and at least one layer of a lubricating coating, and particularly a solid lubricating coating, on its upper side.