Abstract: A method of using substituted olefin polymers prepared by reacting one or more C2-C10 mono-olefin polymers having a number average molecular weight of about 300 to about 5,000 with C4-C10 monounsaturated dicarboxylic acid derivatives and compositions comprising the substituted olefin polymers for preventing fouling of hydrocarbon processing equipment, especially ethylene dichloride distillation units.

Abstract: A method of using substituted olefin polymers prepared by reacting one or more C2-C10 mono-olefin polymers having a number average molecular weight of about 300 to about 5,000 with C4-C10 monounsaturated dicarboxylic acid derivatives and compositions comprising the substituted olefin polymers for preventing fouling of hydrocarbon processing equipment, especially ethylene dichloride distillation units.

Abstract: The present invention relates to a method of terminating a free-radical initiated emulsion polymerization by utilizing a shortstopping agent that contains a stable nitroxyl free-radical or is capable of forming a stable nitroxyl free radical in situ. Besides more effective stopping of polymerization, the present invention does not contain nitrosamine precursors nor is the shortstop agent easily removed during latex and polymer processing.

Abstract: A method for the prevention of fouling in a distillation train of a hydrocarbon processing unit. The method involves the precipitation of foulants contained in the hydrocarbon fluid prior to distillation. Precipitation of fouling components occurs when the liquid to be distilled is contacted with a high boiling fluid which is a non-solvent for the foulant causing species but is a solvent for the liquid that is to be distilled.

Abstract: This invention relates to methods and compositions for obtaining synergistic anti-microbial (biocidal) activity using a combination of 2-bromo-2-(bromomethyl)-glutaronitrile and 2-bromo-2-nitro-propane-1,3-diol. The methods and compositions of the invention are very effective in preventing microbial spoilage of latex carpet backing compounds and in paper and pulp preparation, particularly with respect to latex paper coatings. Compositions containing the active ingredients in ratios of from 0.0015 parts 2-bromo-2-(bromomethyl)-glutaronitrile to 1 part 2-bromo-2-nitro-propane-1,3-diol to 40 parts 2-bromo-2-(bromomethyl)-glutaronitrile to 1 part 2-bromo-2-nitro-propane-1,3-diol.

Abstract: This invention relates to methods and compositions for obtaining synergistic anti-microbial (biocidal) activity using a combination of methylene(bisthiocyanate) and 2-bromo-2-nitropropane-1,3-diol. The methods and compositions of the invention are very effective in preventing microbial spoilage of latex carpet backing compounds and in paper and pulp preparation, particularly with respect to latex paper coatings. Compositions containing the active ingredients in ratios of from 0.001 parts methylene(bisthiocyanate) to 1 part 2-bromo-2-nitro-propane-1,3-diol to 10 parts methylene(bisthiocyanate) to 1 part 2-bromo-2-nitro-propane-1,3-diol.

Abstract: A method for cleaning plastic objects, especially for recycling, whereby liquid surfactant and liquid caustic are added as separate feed streams to water to create a cleaning solution. The concentrations of surfactant and caustic in the cleaning solution are periodically monitored so that the feed rates can be adjusted as necessary to maintain the optimum concentrations of each component.

Abstract: High molecular weight cationic flocculents in combination with water soluble dithiocarbamates remove dissolved and colloidal silver from aqueous suspensions thereof.

Abstract: A viscosifier for aqueous inorganic acid solutions, viscosified acid fluids, and a method of treating hydro-carbon-producing rock formations with viscosified acid solution are provided. The viscosified acid solutions contain an inorganic acid, water, and an effective amount of a viscosifier comprised of ethoxylated fatty amines and the betaine inner salt of ethoxylated fatty amines, and preferably also an alcohol having an alkyne radical and an alkyl pyridine quaternary ammonium salt.

Abstract: A dispersant for vinyl acetate process streams has been found, which dispersant acts as an antifoulant, preventing formation of fouling tars, polymers, debris, and the like, in the process streams involved in the manufacture of vinyl acetate monomer. The antifoulant/dispersant is primarily composed of hydrocarbonaceous sulfonic acids which may optionally be admixed organic polar solvents and tall oil fatty acids.

Abstract: A method of breaking gelled viscosities of oil-based gelled fracturing fluids used in low temperature formations having operating temperatures ranging between about 60.degree.-120.degree. F. which comprises treating said oil-based gelled fracturing fluids with an effective amount of a chemical breaker consisting essentially of an effective admixture of hydrated lime and sodium bicarbonate.

Abstract: Gellant for oil well fraturing or friction reducer in pipelines in liquid form comprising (A) an ionic association polymer which is the reaction product of (1) sodium aluminate and (2) an alkyl phosphate ester combined with (B) a polar solvent.

Abstract: Novel water-soluble terpolymers comprising:______________________________________ Ingredients Mole % ______________________________________ 2-acrylamido-2-methylpropane- 51-59 sulfonic acid, sodium salt (AMPS) N,N--dimethylacrylamide 6-28 acrylonitrile 20-35 ______________________________________These terpolymers provide high temperature fluid loss additives and rheology stabilizers for high calcium-containing brine clay drilling fluids.

Abstract: Novel water-soluble terpolymers comprising:______________________________________ Ingredients Mole % ______________________________________ 2-acrylamido-2-methylpropane- 57-61 sulfonic acid, sodium salt (AMPS) acrylamide 20-35 N,N--diallylacetamide 4-23 ______________________________________These terpolymers provide high temperature fluid loss additives and rheology stabilizers for high calcium-containing brine clay drilling fluids.

Abstract: Novel water-soluble terpolymers comprising:______________________________________ Ingredients Mole % ______________________________________ 2-acrylamido-2-methylpropane- 58-77 sulfonic acid, sodium salt (AMPS) N--vinylp;yrrolidone 2-20 acrylonitrile 4-36 ______________________________________These terpolymers provide high temperature fluid loss additives and rheology stabilizers for high calcium-containing brine clay drilling fluids.

Abstract: Novel water-soluble terpolymers comprising:______________________________________ Ingredients Mole % ______________________________________ 2-acrylamido-2-methylpropane- 51-59 sulfonic acid, sodium salt (AMPS) N,N--dimethylacrylamide 6-28 acrylonitrile 20-35 ______________________________________These terpolymers provide high temperature fluid loss additives and rheology stabilizers for high calcium-containing brine clay drilling fluids.

Abstract: Novel water-soluble terpolymers comprising:______________________________________ Ingredients Mole % ______________________________________ 2-acrylamido-2-methylpropane- 57-61 sulfonic acid, sodium salt (AMPS) acrylamide 20-35 N,N--diallylacetamide 4-23 ______________________________________These terpolymers provide high temperature fluid loss additives and rheology stabilizers for high calcium-containing brine clay drilling fluids.

Abstract: Novel water-soluble terpolymers comprising:______________________________________ Ingredients Mole % ______________________________________ 2-acrylamido-2-methylpropane- 58-77 sulfonic acid, sodium salt (AMPS) N--vinylpyrrolidone 2-20 acrylonitrile 4-36 ______________________________________These terpolymers provide high temperature fluid loss additives and rheology stabilizers for high calcium-containing brine clay drilling fluids.