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| Number | Title | Issue Date |
| 5073248 | Asphaltene dispersants - inhibitors A method of dispersing asphalt/asphaltene comprising an admixture of polymer A and polymer B ranging from 90 to 10 weight percent A to from 10 to 90 weight percent B. Wherein polymer A is an alkyl substituted phenolformaldehyde liquid resin having a weigh... | 12/17/1991 |
| 5049310 | Zinc stabilization with modified acrylamide based polymers and corrosion inhibition derived therefrom New zinc stabilizing polymers containing at least 5 mole percent of a monomer represented by the structure: ##STR1## wherein: R is independently, at each occurrence, chosen from H and lower (C1 -C4) alkyl groups; R' is a hydroca... | 09/17/1991 |
| 5047083 | Process for de-oiling mill scale A process for de-oiling mill scale which comprises (a) collecting mill scale and analyzing for oil content; and then (b) slurrying the portion of mill scale containing more than 0.5 weight percent oil in water to achieve an aqueous mill scale slurry having at ... | 09/10/1991 |
| 5021167 | Method for separating liquid from water using amine containing polymers A method is disclosed for clarifying water comprising dosing the water to be clarified with a copolymer produced by the emulsion polymerization of only hydrophobic monomers where at least one hydrophobic monomer is an amine containing monomer which is hyd... | 06/04/1991 |
| 5021498 | Asphaltene dispersants - inhibitors An asphalt/asphaltene dispersant comprising an admixture of polymer A and polymer B ranging from 100 to 10 weight percent A to from 10 to 100 weight percent B. Wherein polymer A is an alkyl substituted phenol-formaldehyde liquid resin having a weight aver... | 06/04/1991 |
| 5008035 | Fluidization of heavy slurries A process for fluidizing oily heavy slurries chosen from slurries of catalyst fines in hydrocarbon, coke slurries in hydrocarbon, and asphalt residues in hydrocarbon which comprises: (1) heating, with effective mixing, the oily heavy slurries to at least ... | 04/16/1991 |
| 5004786 | Process for producing sulfomethylamide polymers Polyacrylamide is reacted with formaldehyde and bisulfite at a temperature of at least about 100° C. and at an initial reaction mixture pH of less than about 12, preferably about 3 to about 8, to produce sulfomethylpolyacrylamide.... | 04/02/1991 |
| 4973428 | Zinc stabilization with modified acrylamide based polymers and corrosion inhibition derived therefrom New zinc stabilizing polymers containing at least 5 mole percent of a monomer represented by the structure: ##STR1## wherein: R is independently, at each occurrence, chosen from H and lower (C1 -C4) alkyl groups; R' is a hydroca... | 11/27/1990 |
| 4869932 | Use of low molecular weight water-soluble anionic polymers as blocking agent for fiberglass sizing A method of preventing the interaction of cationic softeners coated upon the surfaces of glass fibers with anionic polymers contained in aqueous baths used in forming the glass fibers into mats which comprises treating the fiber with at least 3 parts per ... | 09/26/1989 |
| 4869828 | Stabilization of iron in aqueous systems The present invention is directed to a process for stabilizing iron hydr(oxide) in aqueous systems which comprises adding to an aqueous system in which the water contains or will contain soluble iron a polymer which contains pendant N-substituted amide fu... | 09/26/1989 |
| 4869846 | Fly ash utilization in flue gas desulfurization A carboxylic acid which has a pKa within the range of 2 to 7 and the ability to increase the effective alkalinity of fly ash for flue gas desulfurization. Carboxylic acid may be combined with adjuvants. Generally carboxylic acids with dispersan... | 09/26/1989 |
| 4869885 | Use of oil-soluble surfactants in flue gas desulfurization systems A method of improving the SO2 scrubbing efficiency of flue gas desulfurization scrubbers which comprises conducting the scrubbing operation in such scrubbers in the presence of an oil-soluble surfactant.... | 09/26/1989 |
| 4869829 | Process for separating solids with a keratin filter aid A water clarification process wherein solids are separated by filtration through a porous septum utilizes as a filter precoat a coating of keratin-composition in the form of particles wherein at least 75 weight percent of the particles have a particle siz... | 09/26/1989 |
| 4868248 | Polyhydroxyamic acid polymers from polyacrylic acids Polyacrylic acid polymers are modified with hydroxylamine to convert a portion of the acrylic acid groups in the polymer to hydroxamic acid groups. The process requires utiization of a pH between 1-6 and a temperature ranging between 70°-150° C.... | 09/19/1989 |
| 4867757 | Lapping slurry compositions with improved lap rate A concentrated lapping composition having the following makeup: said lapping composition having its pH adjusted to greater than 8.5 in order to afford an improved lapping rate.... | 09/19/1989 |
| 4863487 | Hydrocarbon fuel detergent Detergents for hydrocarbon fuels, and hydrocarbon fuels containing detergents are provided wherein the detergent is comprised of an alkenylsuccinimide prepared by reacting an alkenylsuccinic acid or anhydride with a mixture of amines. The alkenyl substitu... | 09/05/1989 |
| 4863615 | Cationic coagulants plus collidal silica for use in paint detackification Water soluble low molecular weight cationic polymeric coagulants in combination with colloidal silica are excellent paint detackification agents for treating paint spray booth waters which are contaminated with paint particles.... | 09/05/1989 |
| 4861492 | Method of dewatering sewage sludge particularly on recessed plate pressing equipment Method for dewatering sewage sludge with the aid of organic polymeric flocculating agents (polyelectrolytes) made preferably by emulsion polymerization. To obtain optimum dewatering results, a substantial amount of the aqueous phase of the sludge is remov... | 08/29/1989 |
| 4854947 | Paint detackification using oil-in-water emulsions from oily waste treatment plants A method of detackifying oversprayed paints chosen from the group consisting of high solids enamels, clear coats, two-phase urethane paints, and water or solvent borne base coats which comprises the contact of said oversprayed paint with an oil-in-water e... | 08/08/1989 |
| 4853140 | Lubricating fluids for slicing silicon ingots A lubricating composition for use in slicing or cutting silicon wafers. The composition includes a soap, a phosphorous containing compound, and an ethylene oxide-propylene oxide polymer. The phosphorous compound is a low temperature, extreme pressure lubr... | 08/01/1989 |
| 4851128 | Pulp mill waste color removal with carbon absorbents Carbon absorbents are used to remove color bodies from paper mill waste waters. A preferred embodiment of the process utilizes pretreatment of the paper mill waste waters with cationic flocculants.... | 07/25/1989 |
| 4846986 | Oil-in-water dry film prelube emulsion An oil-in-water emulsion useful as a metal working lubricant. The emulsion includes water, a oil-in-water emulsifier, a film plasticizer, and a boundry lubricant. A corrosion inhibitor may also be included.... | 07/11/1989 |
| 4845289 | Procedure for the removal or reduction of residual trimethylamine odor from its reaction products A process for the removal or reduction of residual trimethyl amine odor resulting from the quaternization of a halogen containing precursor with trimethyl amine. Odor reduction is achieved by reacting the residual trimethyl amine with at least an equivale... | 07/04/1989 |
| 4835332 | Use of triphenylphosphine as an ethylene furnace antifoulant Triphenylphosphine prevents fouling in ethylene furnaces.... | 05/30/1989 |
| 4828624 | Cement grinding aid compositions Cement clinkers are ground in an aqueous environment using as a grinding aid, a composition comprising:... | 05/09/1989 |
| 4827033 | naphthenic acid amides A naphthenic acid amide having the formula: ##STR1## where R is the hydrocarbon portion of a naphthenic acid, R1 is H or Me X is O or NH, and n is a number having the value of 1-10. The method of producing such amides is also disclosed.... | 05/02/1989 |
| 4820423 | Branched alkyl acrylamide types of polymer-zinc corrosion inhibitor A method of preventing corrosion and scale formation on metals exposed to industrial recirculating waters having a pH ranging between about 7.0 to about 9.5, which consists essentially of adding to said industrial recirculating waters an effective amount ... | 04/11/1989 |
| 4814092 | Centrifuge processing of spent emulsion from paint spray booths In a process for removal of detackified oversprayed paint particles from paint spray booths of the type comprising a chamber, means for passing a wash stream capturing oversprayed paint particles across a liquid curtain and down through said chamber, a su... | 03/21/1989 |
| 4806665 | Preparation of silica sol A method for producing a silica sol containing less than 200 ppm sodium having an average particle size of 2-110 nm, and a particle size distribution with a coefficient dispersion of 0.16-0.4. The silica sols are produced using a lower alkanolamine contai... | 02/21/1989 |
| 4806345 | Cross-linked cationic polymers for use in personal care products Personal care compositions are provided which have as a thickening agent a lightly cross-linked cationic vinyl addition polymer. Such compositions include water, at least one cosmetically-active agent, and such thickening agent, preferably one derived fro... | 02/21/1989 |
| 4806229 | Volatile amines for treating refinery overhead systems A process for substantially neutralizing the volatile acid gases and water present in the condensate of a distilling pertroleum product which comprises treating the distilling product prior to the condensation thereof with at least one amine having a boil... | 02/21/1989 |
| 4802994 | Biocide treatment to control sulfate-reducing bacteria in industrial process waste waters Sulfate-reducing bacteria present in industrial waste waters can be controlled by using hydrogen peroxide in combination with non-oxidizing organic biocides known to be effective against sulfate-reducing bacteria.... | 02/07/1989 |
| 4802996 | Biocides for treating industrial waters, particularly flue gas desulfurization scrubber sludge Sulfate-reducing bacteria present in industrial waste waters can be controlled by using either the biocide glutaraldehyde or a blend of sodium dimethyldithiocarbamate and disodium ethylene bisdithiocarbamate.... | 02/07/1989 |
| 4802992 | Removal of dispersed oil from water The present invention provides the methyl chloride and dimethyl surfate quaternary ammonium salts of 1-acryloyl-4-methyl piperazine, their homopolymers and copolymers, and water clarification processes in which is used polymers of 1-acryloyl-4-methyl pipe... | 02/07/1989 |
| 4801388 | Modified acrylamide polymers used as scale inhibitors Water supplies are treated to inhibit the formation of scale deposits of alkaline earth phosphates, phosphonates, sulphates and carbonates using various hydrocarbon polymers which contain an amido functionality and which have been prepared by post-polymer... | 01/31/1989 |
| 4800071 | Filtration aids for removal of calcium solids from aqueous phosphoric acid Separation of gypsum from phosphoric acid liquor produced during the production of phosphoric acid from finely ground phosphate rock. These aids are characterized as containing sulfonate and acrylamide.... | 01/24/1989 |
| 4800217 | Paint detackification A paint spray booth detackifying composition which includes mixtures of styrene-acrylate polymer and a melamine-formaldehyde polymer and the method of using same.... | 01/24/1989 |
| 4800235 | Synergistic biocide of 1,5-pentanedial and a mixture of N-alkyl dimethyl benzyl ammonium chloride and N-dialkyl methyl benzyl ammonium chloride The invention is a synergistic biocide comprising a blend of 1,5-pentanedial and a mixture of N-alkyl dimethyl benzyl ammonium chloride and N-dialkyl methyl benzyl ammonium chloride.... | 01/24/1989 |
| 4797224 | Branched alkyl acrylamide types of polymer-zinc corrosion inhibitor Water-soluble zinc:polymer complexes of nitrogen-containing polymers are useful in preventing corrosion in aqueous recirculating systems operating within the pH range of 7.0-9.5, when combined with orthophosphate ion sources.... | 01/10/1989 |
| 4795531 | Method for dewatering paper A method of enhancing the dewatering of paper during the papermaking process which includes adding a low molecular weight cationic coagulant and then colloidal silica and a high molecular weight flocculant.... | 01/03/1989 |
