Abstract:
A system for generating refrigeration wherein a multicomponent refrigerant is compressed in a compressor lubricated with polyalphaolefin-based oil, the oil is removed from the compressed refrigerant, and the compressed refrigerant is expanded to generate refrigeration at a cryogenic temperature for provision to a refrigeration receptor.
Abstract:
This invention provides a release agent for low speed casting, which does not pollute working environment, has a superior running property and lubricating property and further shows a superior cleanability of a die. An aqueous release agent for a low speed injection die casting comprises as main components an inorganic lubricant, spherical resin particles having an average particle size of 0.1-10 nullm, an organic carboxylic acid metal salt and water.
Abstract:
An aqueous cutting liquid comprises a cationic water-soluble resin having an amine value of 20 to 200 mgKOH/g, and at least one rheology control agent selected from the group consisting of an inorganic bentonite, an organic bentonite and an aqueous silica sol, wherein the content of a nonvolatile matter of the rheology control agent is 0.1 to 30 percent by weight of the amount of the nonvolatile matter of the cationic water-soluble resin. An aqueous cutting agent comprises the aqueous cutting liquid, and an abrasive grain, wherein the content of the abrasive grain is 100 to 1000 percent by weight of the amount of the nonvolatile matter of the aqueous cutting liquid. A hard and brittle material is cut by a cutting device using the aqueous cutting agent. The present invention provides an aqueous cutting agent which is excellent in dispersion stability of the abrasive grain and viscosity stability during cutting/slicing operations, aqueous cutting liquid usable for the aqueous cutting agent, and a cutting/slicing method excellent in cutting performance, cleanability and the like of the work material on cutting/slicing hard and brittle material by using the cutting agent.
Abstract:
A low friction cam shaft for actuating at least one valve of an internal combustion engine includes a shaft member extending longitudinally, at least one cam secured to the shaft member, the cam being made of a plurality of density metal materials and having an outer surface impregnated with a solid film lubricant that has an affinity for oil and promotes rapid formation of a stable oil film to reduce friction therebetween.
Abstract:
A biodegradable lubricative resin composition which withstands use as a material for sliding parts, and slide bearings and gears made from such a resin composition. The resin composition contains an aliphatic polyester which is a monopolymer or copolymer of a hydroxy-carboxylic acid or an aliphatic polyhydroxy alcohol and an aliphatic polybase, the aliphatic polyester preferably containing 50-100 wt % lactic acid, and a lubricant which is a lubricating oil or a solid lubricant. Slide bearings and gears molded from such a resin composition are also proposed.
Abstract:
A lubricant suitable for use in an industrial forming process, especially cold pilgering, comprises a polyglycol as base fluid, a water-soluble inorganic filler and an organic filler.
Abstract:
This invention relates to perfluoroalkyl group terminated urethanes, thiourethanes and ureas of the general formula(R--X--CONH).sub.m Awhere m is 1, 2 or 3, R is R.sub.f --E and optionally R.sub.1 with the proviso that at least one R is R.sub.f --E, R.sub.f is a perfluoroalkyl group, R.sub.1 is a hydrocarbon group, E is a divalent linking group, X is --O--, --S--, --NR.sub.2 -- and R.sub.2 is H or lower alkyl and A is R.sub.f E or R.sub.1 if m is 1 and a divalent or trivalent linking group if m is 2 or 3 respectively. Compounds of this general formula are useful as solid lubricants or as additives for waxes and resins providing lubricating properties.
Abstract translation:本发明涉及通式(RX-CONH)mA的全氟烷基封端的氨基甲酸酯,硫代氨基甲酸酯和脲,其中m为1,2或3,R为R f -E且任选地为R 1,条件是至少一个R为Rf-E Rf为全氟烷基,R 1为烃基,E为二价连接基团,X为-O - , - S - , - NR2-,R 2为H或低级烷基,A为RfE或R 1,如果m为1 如果m分别为2或3,则为二价或三价连接基团。 该通式的化合物可用作固体润滑剂或作为提供润滑性能的蜡和树脂的添加剂。
Abstract:
A grease composition for a constant velocity joint contains a base oil containing 2 to 25 wt. % of a thickener based on total weight of the composition, 0.5 to 20 wt. % of boron nitride powders based on total weight of the composition, and 0.1 to 10 wt. % of an extreme pressure agent based on total weight of the composition selected from the group consisting of molybdenum dithiocarbamate, a sulfur and phosphorus-containing extreme pressure agent, and mixtures thereof. The boron nitride powders have mean particle size of more than 5 .mu.m and not more tha 20 .mu.m.
Abstract:
Disclosed are an apparatus having sliding parts and a compound for preventing diffusion or separation of a base oil; and a compound for preventing diffusion or separation of the base oil used for the apparatus: an electronic or electric appliance using a joul heat generating source, means for taking out joul heat to the outside by sliding with said heat generating source, and heat conducting compound intervenient between said heat taking out means and heat generating source; and the heat conducting compound used for the appliance.
Abstract:
A grease composition for a constant velocity joint involves a base oil containing a thickener and boron nitride powders and optionally an organozinc compound.