Abstract:
It has been discovered that less expensive, and in some cases synergistically effective anti-static additive blends may be added to hydrocarbon fuels to improve the conductivity thereof. The blend includes an anti-static amount of at least one hydrocarbon soluble copolymer of an alkylvinyl monomer and a cationic vinyl monomer and an anti-static amount of at least one hydrocarbon soluble polysulfone copolymer of at least one olefin and sulfur dioxide. Optional ingredients include polymeric polyamines and aryl sulfonic acids.
Abstract:
Telomeric hydrocarbon phosphorus compounds and hydrocarbon compositions containing said compounds are described. The telomeric hydrocarbon phosphorus compounds are represented by the formula: ##STR1## in which R is a hydrocarbon radical having from 1 to 18 carbon atoms and n has a value from 0 to 100.
Abstract:
The dissemination of gas turbine engine aviation fuels under shock conditions, particularly by forming mist particles, and the accompanying fire hazard, are reduced by dissolving in the fuel a soluble polymer of molecular weight greater than 10.sup.6 in such concentration that there is molecular overlap of the dissolved polymer in the fuel, the dissolved polymer being one containing polar groups which form bonds with each other when the fuel is subjected to shock.
Abstract:
The flow properties of waxy crude oils are improved by the incorporation therein of a copolymer of (1) an olefinically unsaturated compound containing a long hydrocarbon side chain and (2) an olefinically unsaturated heterocyclic nitrogen-containing compound, e.g., 4-vinyl pyridine.
Abstract:
1. A LIQUID HYDROCARBON FUEL OF FLASH POINT AT LEAST 90* F. SUITABLE FOR USE IN GAS TURBINE ENGINED AIRCRAFT, AND HAVING A REFUCED TENDENCY TO PARTICULATE DISSEMINATION ON BEING SUBJECTED TO SHOCK, THE FUEL CONTAINING THEREIN POLYMER OF MOLECULAR WEIGHT GREATER THAN 10**6 (VISCOSITY AVERAGE) OR OF INTRINSIC VISCOSITY REATER THAN 2.5 DLS./GM. IN A CONCENTRATION SUCH THAT THERE IS MOLECULAR OVERLAP OF THE POLYMER MOLECULES IN THE LIQUID, THE DISSOLVED POLYMER CONTAINING POLAR GROUPS WHICH FORM INTER-MOLLECULAR ASSOCIATIVE BONDS ARISING FROM ELECTROSTATIC ATTRACTION BETWEEN POLAR AND/OR DIPOLAR CHARGES IN THE POLAR GROUPS, THE BONDS BEING HYDROGEN OR ELECTOVALENT BONDS, THE POLYMER BEING AN ADDITION COPLYMER OF AN ALKYL STYRENE, THE ALKYL GROUP IN WHICH CONTAINS FROM 3 TO 20 CARBON ATOMS.