Abstract:
Disclosed herein are fuel oil compositions containing halogenated polypropylenes and/or halogenated polybutylenes having molecular weights in the range of about 400 to 3,000. These halogenated polyolefins have been found to reduce the tendency of the fuel oil to leave a carbon residue.
Abstract:
Hydrogenated alkyl aromatics are useful as petroleum oil additives such as wax crystal modifiers and cold flow improvers for petroleum oils, e.g. atmospheric distillate fuels, particularly when used in combination with ethylene backbone middle distillate pour point depressants such as branched polyethylene, copolymers of 4 to 30 molar proportions of ethylene with an unsaturated ester, e.g. vinyl acetate, or another olefin, etc.
Abstract:
Addition to distillate fuel oil of wax crystal modifying amides or salts, of limited oil solubility, formed from acids with amines or ammonia improves the cold-flow properties of the oil.
Abstract:
The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated and functionalized. The dispersant substances include compositions including a copolymer of two different conjugated dienes, a copolymer of a p-alkylstyrene and a conjugated diene, or a homopolymer of a conjugated diene. The polymers are selectively hydrogenated to produce polymers which have highly controlled amounts of unsaturation, permitting highly selective functionalization. Also provided are lubricant fluids, such as mineral and synthetic oils, which have been modified in their dispersancy and/or viscometric properties by means of the dispersant substances of the invention. Also provided are methods of modifying the dispersancy and/or viscometric properties of lubricating fluids such as mineral and synthetic lubricating oils. The dispersant substances may also include a carrier fluid to provide dispersant concentrates.
Abstract:
The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated, functionalized, optionally modified, and post treated. The dispersant substances include a copolymer of two different conjugated dienes. The polymers are selectively hydrogentated to produce polymers which have highly controlled amounts of unsaturation, permitting highly selective functionalization. Also provided are lubricant fluids, such as mineral and synthetic oils, which have been modified in their dispersancy and/or viscometric properties by means of the dispersant substances of the invention. Also provided are methods of modifying the dispersancy and/or viscometric properties of lubricating fluids such as mineral and synthetic lubricating oils. The dispersant substances may also include a carrier fluid to provide dispersant concentrates.
Abstract:
Ein Intubations-Flüssigkeits-Beatmungsmittel gekennzeichnet durch ein semifluoriertes Alkan der allgemeinen Formel
R F R H oder R F R H R F ,
wobei R F eine lineare oder verzweigte Perfluoralkl-Gruppe und R H eine lineare oder verzweigte, gesättigte (Kohlenwasserstoff)-Alkyl-Gruppe ist, als gas-, insbesondere O 2 - bzw. CO 2 -transportierendes Medium.
Abstract:
The properties of oil and fuel oil compositions are improved by additive combinations comprising a polymer containing the repeating units (I, II) or (III, II) in combination with a comb-like polymer having aryl groups.
Abstract:
Disclosed herein are methods for correcting fuel oil compositions having excess conductivity. The oil compositions comprise a Petroleum Based Component, a Conductivity additive and a Conductivity Correcting Additive.