Abstract: Phosphorus derivatives of polyalkenylsuccinimides and methods of use of such derivatives as antifoulants in liquid hydrocarbonaceous mediums, such as crude oil, during processing at elevated temperatures are disclosed. The derivatives are formed via reaction of a polyalkenylsuccinimide intermediate with formaldehyde and a phosphorus compound having at least one acidic hydrogen P-H bond. The intermediate is first formed via reaction of polyalkenylsuccinic anhydride and polyamine.

Abstract: Methods are provided for simultaneously inhibiting the corrosion of iron-containing and copper-containing metals in contact with boiler feedwaters. The methods comprise adding an effective amount of 1,10-phenanthroline to the boiler feedwater system for which corrosion inhibition is desired.

Abstract: A method for inhibiting the formation of polymeric based fouling deposits normally formed during the caustic washing to hydrocarbons is disclosed. The method comprises adding an effective amount for the purpose of an acetoacetate ester compound to the caustic wash system.

Abstract: Agglomerating agent and method for use in heap leaching of mineral bearing ores. A moderate to high molecular weight anionic polymer in combination with lime provides a highly effective agglomerating agent. The anionic polymer is preferably a copolymer of acrylamide and acrylic acid. The polymer preferably has a molecular weight of from about 1 to 8 million or higher.

Abstract: Glyoxylic acid/alkylphenol derivatives of polyalkenylsuccinimides are used as effective antifoulants in liquid hydrocarbonaceous mediums, such as crude and gas oil distillates during processing of such liquids at elevated temperatures.

Abstract: Reaction products of (a) polyalkenylsuccinic anhydride; (b) secondary, aromatic amines, and (c) hindererd alcohols are used as effective antifoulants in liquid hydrocarbonaceous mediums, such as crude oils and gas oils, during processing of such liquids at elevated temperatures. The reaction products are formed via a two-step reaction in which the polyalkenylsuccinic anhydride is reacted with the secondary, aromatic amine as a first step. The resulting polyalkenylsuccinimide is then reacted with a hindererd alcohol to form the desired antifoulant.

Abstract: A method of dewatering sludge is disclosed. This method comprises adding to the sludge an effective amount for the purpose of a polymer comprising repeat unit moieties of the compound methacryloyloxyethyl trimethyl ammonium chloride, said polymer having an intrinsic viscosity of about 1.0 to about 4.5 dl/g.

Abstract: Coal fines and suspended insoluble metals are flocculated from coal mine drainage waters by adding a polymeric tannin-amine compound.

Abstract: A composition and method of use thereof for the treatment of wastewater comprising a block copolymer having the formula: ##STR1## wherein E is a polymeric segment obtained from the polymerization of hydrophobic monomers, x when present is a nonionic monomer, y is a cationic monomer, R.sub.1 and R.sub.2 are the same or different and are H or a lower alkyl group from C.sub.1 to C.sub.3 and F is a salt of an ammonium cation.

Abstract: A method for controlling the deposition of scale imparting species on the structural surfaces of steam generating systems comprising the use of a water soluble polymer having the structure ##STR1## wherein E is the repeat unit remaining after polymerization of an alpha, beta ethylenically unsaturated compound.This polymer may also be used in concert with topping agents such as phosphoric acids, phosphonic acids, polyvalent metal salts, metal chelating agents and oxygen scavengers.

Abstract: A corrosion inhibitor formulation for oil and water systems which formulation is resistant to sludge formation and does not tend to stabilize oil/water emulsions when added to oil and water systems. The corrosion inhibitor includes an imidazoline dissolved in an aromatic solvent, a 2-hydroxyalkylcarboxylic acid such as glycolic acid and a glycol such as hexylene glycol. The imidazoline is preferably prepared from a long chain fatty acid and a polyamine in a molar ratio of about 1.5:1.

Abstract: Methods are provided for inhibiting the production of acid in acid mine waters by controlling the growth of Thiobacillus ferrooxidans in the mine waters by adding an effective amount of acrolein. This will reduce acid mine drainage to other aqueous systems. The methods comprise adding from about 0.1 to about 10 parts acrolein per million parts of the mine water for which acid production inhibition is sought.

Abstract: Reaction products of (a) hydrocarbon substituted succinic acid or anhydride, (b) mono to hexa-hydroxy alcohols, (c) primary or secondary hydroxy substituted amines, (d) polyalkenylsuccinimide, and (e) a polyoxyalkyleneamine, are effective antifoulants in liquid hydrocarbonaceous mediums, such as in crude oils and gas oils. The reaction products are fed to the liquid hydrocarbon during elevated heat temperature processing of the hydrocarbon so as to inhibit fouling that would otherwise occur.

Abstract: Polyalkenylsuccinimide-maleic anhydride reaction products are used as effective antifoulants in liquid hydrocarbonaceous mediums, such as crude oils and gas oils, during processing of such liquids at elevated temperatures. The reaction products are formed via a two-step reaction in which a polyalkenylsuccinic anhydride precursor is reacted with an amine to form polyalkenylsuccinimide intermediate which, in turn, is reacted with maleic anhydride.

Abstract: Methods and compositions are provided for inhibiting the polymerization of acrylic acid monomers during elevated temperature processing thereof or during storage or shipment of acrylic acid product. The compositions comprise a combination of a Mn source compound and a phenylenediamine compound having at least 1 N--H bond. The methods comprise adding from about 1-10,000 ppm of the combination to the particular acrylic acid containing medium for which such anti-polymerization protection is desired, per million parts of the acrylic acid medium.

Abstract: A method and composition for detackifying or coagulating and flocculating waterborne and solventborne paints with organofunctional silane compounds.

Abstract: Oxidative stability of gasoline mixtures is improved by adding to the gasoline a phenylenediamine compound (I) in combination with a strongly basic organoamine compound (II). The compound (II) may comprise alkyphenol-polyamine-formaldehyde Mannich reaction products, hydroxylamines, polyethylenepolyamines, and members of the group of piperazine, aminoalkyl substituted pipearazine and amino substituted alicyclic alkanes.

Abstract: Novel, stable blends of cationic water-in-oil emulsion polymers with cationic polymers in aqueous solution are preparable through the use of stabilizing solvents and surfactants.

Abstract: A water soluble terpolymer useful in controlling deposition of scale in aqueous systems comprised of monomeric repeat units (g), (h) and (i) wherein repeat unit (g) comprises the structure ##STR1## wherein E is the repeat unit obtained after polymerization of an .alpha.,.beta. ethylenically unsaturated compound, wherein repeat unit (h) comprises the structure ##STR2## wherein R.sub.1 and R.sub.2 are the same or different and denote H, methyl or ethyl and M is a water soluble cation or H, and wherein repeat unit (i) comprises the structure ##STR3## wherein R.sub.3 is a lower alkyl (C.sub.1 -C.sub.3), R.sub.4 is a hydroxy substituted alkyl or alkylene group having from 1 to about 6 carbon atoms or a non-substituted alkyl or alkylene group having from 1 to about 6 carbon atoms, X is an anionic radical, Z is H, hydrogen atoms or a water soluble cation or cations which together counterbalance the valance of X and a is 0 or 1.

Abstract: A method and composition for foam control in non-aqueous systems utilizing sulfonate or phosphinate compounds. The method is especially well adapted for use in oil distillation units and coking of crude oil residues.