摘要:
A drag reducing composition comprising a finely divided, solid polyolefin friction reducing agent formed from olefins containing from 2 to 30 carbon atoms, the polyolefin drag reducing agent suspended in a suspending medium and comprising 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate containing up to 10% by weight of water.
摘要:
1. A liquid composition for use in compression refrigeration, air-conditioning and heat pump systems comprises: (A) a fluoroalkene containing from 2 to 5 carbon atoms and at least 1 but no more than 2 double bonds; and (B) an effective amount to provide lubrication of an essentially miscible organic lubricant comprised of carbon, hydrogen and oxygen and having a ratio of oxygen to carbon effective to provide a degree of miscibility with said fluoroalkene so that when up to five weight per cent of lubricant is added to said fluoroalkene the mixture has one liquid phase at at least one temperature between -40 and +70°C, wherein said organic lubricant is a polyalkylene glycol having a viscosity in the range from 20 to 200 centistokes at about 37°C.
摘要:
A liquid composition for use in compression refrigeration, air-conditioning and heat pump systems comprises a fluoroalkene containing from 2 to 5 carbon atoms and at least 1 but no more than 2 double bonds; and an effective amount to provide lubrication of an essentially miscible organic lubricant comprised of carbon, hydrogen and oxygen and having a ratio of oxygen to carbon effective to provide a degree of miscibility with said fluoroalkene so that when up to five weight percent of lubricant is added to said fluoroalkene the mixture has one liquid phase at at least one temperature between -40 and +70°C.
摘要:
A biodegradable lubricating oil composition includes (A) an ester represented by a formula (1) below, the ester having a kinematic viscosity in a range from 300 mm 2 /s to 1000 mm 2 /s at 40 degrees C and an acid value of 0.5 mgKOH/g or less; (B) an ester being obtained by reacting a straight-chain saturated aliphatic carboxylic acid with a polyhydric alcohol, the ester having an acid value of 0.5 mgKOH/g or less; and (C) a phosphate amine salt being obtained by reacting an acidic phosphate with an alkylamine.
In the formula, Ra is a hydrocarbyl group having 4 to 20 carbon atoms, Rb is a hydrocarbyl group having 4 to 18 carbon atoms, Rc is an acyl group having 1 to 10 carbon atoms, and n is an integer of 3 to 15.
摘要:
La présente demande a pour objet une composition comprenant un lubrifiant à base d'esters de polyol (POE) ou PVE et un fluide frigorigène F comprenant de 1 à 99 % en poids du 2,3,3,3-tetrafluoropropène (HFO-1234yf) et de 1 à 99 % en poids de trans-1,3,3,3-tetrafluoropropène (trans HFO-1234ze). Elle a également pour objet l'utilisation de ladite composition en réfrigération, climatisation et pompe à chaleur.
摘要:
The present invention provides a lubricating oil composition having a low traction coefficient that can reduce the friction between parts such as gear teeth surfaces, exposed to elastohydrodynamic lubrication conditions to attain energy saving properties and high efficiency, suitable for use in manual, automatic and continuously variable transmissions of automobiles or industrial gear systems. The low traction coefficient lubricating oil composition comprises a lubricating base oil containing (A) a partial ester of a polyhydric alcohol and a carboxylic acid in an amount of 0.1 to 80 percent by mass on the basis of the total mass of the base oil and having a kinematic viscosity at 100°C of 1 to 15 mm 2 /s, the composition having a kinematic viscosity at 100°C of 1 to 20 mm 2 /s.
摘要:
A liquid composition for use in compression refrigeration, air-conditioning and heat pump systems comprises a fluoroalkene containing from 2 to 5 carbon atoms and at least 1 but no more than 2 double bonds; and an effective amount to provide lubrication of an essentially miscible organic lubricant comprised of carbon, hydrogen and oxygen and having a ratio of oxygen to carbon effective to provide a degree of miscibility with said fluoroalkene so that when up to five weight percent of lubricant is added to said fluoroalkene the mixture has one liquid phase at at least one temperature between -40 and +70°C.
摘要:
A lubricating grease composition comprising (A) a base oil, (B) 5 to 10 wt. % of a urea compound, (C) 0.5 to 20 wt. % of at least one phosphorous compound selected from the group consisting of a phosphoric acid salt etc., and (D) 0.5 to 40 wt. % of a fatty acid metal salt. Aforementioned lubricating grease composition allows it to reduce the friction coefficient and prolong the endurance life significantly when it is applied onto surfaces of the sliding pair consisting of metal and plastic (especially glass-fiber-reinforced plastic) parts.
摘要:
Liquid compositions for use in compression refrigeration, air-conditioning and heat pump systems in which a fluoroalkene containing from 3 to 4 carbon atoms and at least 1 but no more than 2 double bonds is combined with an effective amount to provide lubrication of an essentially miscible organic lubricant comprised of carbon, hydrogen and oxygen and having a ratio of oxygen to carbon effective to provide a degree of miscibility with said fluoroalkene so that when up to five weight percent of lubricant is added to said fluoroalkene the refrigeration has one liquid phase at at least one temperature between -40 and +70°C. Methods for producing refrigeration and heating with the fluoroalkenes, in combination with the disclosed lubricants, are also disclosed.
摘要:
A composition that includes solid lubricant nanoparticles and an organic medium is disclosed. Also disclosed are nanoparticles that include layered materials. A method of producing a nanoparticle by milling layered materials is provided. Also disclosed is a method of making a lubricant, the method including milling layered materials to form nanoparticles and incorporating the nanoparticles into a base to form a lubricant.