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Class 252/389.24 - Trivalent P (e.g., phosphorus acid, phosphites, etc.)


Subclass of Class 252 - Compositions
Definition: Compositions under subclas 389.2 in which the phosphorus
No. of patents: 43
Last issue date: 08/05/2008


1    
NumberTitleIssue Date
7407535Corrosion resistant composition for treatment of concrete structures
Water soluble materials, compositions and systems for use in treating concrete-containing materials and surfaces are disclosed. Treatment modalities that include addition of the disclosed materials, compositions and systems to pre- and post-construction concrete-con...
08/05/2008
7381252Anti-corrosion additive composition for concrete compositions for use in reinforced concrete structures
An anti-corrosive additive composition is provided that includes an alkali-based salt of dioic acid and a defoamer agent. The defoamer agent is generally selected from the group consisting of a polyether modified polysilicane, a tri-alkane phosphate, a tri-alkene ph...
06/03/2008
6964746Mixture of a phosphonite with other components
The invention relates to mixtures of phosphonite (component A) and/or an ester and/or salt of a long-chain fatty acid (component B), and/or a carboxylic ester, and/or carboxylic amide (component C), and also to their use in polyamides or in polyesters. ...
11/15/2005
6706669Method for inhibiting corrosion using phosphorous acid
The present invention relates to a method for inhibiting high temperature of corrosion-prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of phosphorous acid, typically up to 1000 wppm, to the meta...
03/16/2004
6503420Anti-corrosion solutions for air dehumidification systems
Anti-corrosion solutions useful for air dehumidification processes are disclosed. Phosphonate corrosion inhibiting agents or mixtures thereof can be added to halide solutions of alkali metals, alkaline earth metals, or mixtures thereof, to minimize corros...
01/07/2003
6447594Strontium chromate corrosion inhibitor pigment with reduced solubility
A process for producing a strontium chromate corrosion inhibitor includes the steps of providing an aqueous slurry containing dispersed particulate strontium chromate, adding to the slurry a phosphoric acid or a neutral or acidic soluble salt of a phospho...
09/10/2002
6416712Corrosion inhibition method suitable for use in potable water
Effective corrosion inhibitors having minimal organic content, particularly suitable for use in municipal drinking water systems, are described. The corrosion inhibiting additive is a stannous salt of a non-carbon acid....
07/09/2002
6391384Method for providing a corrosion inhibiting solution
The invention is directed to a method for providing a corrosion inhibiting aqueous solution which includes zinc orthophosphate where the zinc orthophosphate is solubilized. The invention is directed to a method of making a substantially contaminant-free, ...
05/21/2002
6383414Use of corrosion inhibiting compounds to inhibit corrosion of metal plugs in chemical-mechanical polishing
A process of inhibiting a corrosion of metal plugs formed in integrated circuits is described. The corrosion inhibiting process includes providing a partially fabricated integrated circuit surface including the metal plugs on a polishing pad to carry out ...
05/07/2002
6294262Composition and process for anticorrosive treatment of non-ferrous metal
Disclosed is a composition and a process for anticorrosive treatment of the surface of non-ferrous metal. The composition is obtainable by treating an aqueous solution of CrO3 and an inorganic acid with phosphorous acid as a reducing agent unti...
09/25/2001
6200529Corrosion inhibition method suitable for use in potable water
Effective corrosion inhibitors having minimal organic content, particularly suitable for use in municipal drinking water systems, are described. The preferred corrosion inhibiting additive is an aqueous solution of a stannous halide, preferably stannous c...
03/13/2001
6099755Method and composition for inhibiting scale and controlling corrosion in cooling water systems
A method and composition for simultaneously controlling the deposition of scale and the formation of corrosion in a cooling water system comprising adding to the system a combination of (a) a water soluble copolymer having the structure: ##STR1## ...
08/08/2000
6071435Composition and process for treating a zinciferous surface
To inhibit the blackening of zinciferous metal-plated steel sheet while also generating a good corrosion resistance, fingerprint resistance, and chromium fixation ratio for the steel sheet, it is coated with an aqueous liquid composition that has a pH not...
06/06/2000
5576558Primer composition containing polyisocyanate and phosphate for bonding to a hard-to-bond material
A primer composition containing: (a) at least one polyisocyanate component selected from 4,4'-diphenylmethane diisocyanate, tolylene diisocyanate, xylene diisocyanates, hexamethylene diisocyanate, hydrogenated 4,4'-diphenylmethane diisocyanate, hydrogenat...
11/19/1996
5490883Solution and method for cleaning marble surfaces
A stable, crystallizing solution of magnesium silicofluoride and oxalic acid is disclosed which can be incorporated into a complete maintenance system covering daily and weekly maintenance along with the periodic maintenance process of crystallization for...
02/13/1996
5384064Hydrochloric acid pickling accelerator
A hydrochloric acid pickling accelerator for batch and continuous hydrochloric acid pickling baths for all types of steel, comprising an admixture of from about 10 to about 15 percent by weight glycol, from about 20 to about 30 percent by weight calcium c...
01/24/1995
5322870Additive package for in situ phosphatizing paint, paint and method
An additive package can be used in a single-coat, in situ self-phosphatizing paint to provide a phosphate layer that inhibits corrosion of a surface on which the paint is applied. The additive package includes an amine and a phosphatizing reagent that can...
06/21/1994
5314643High temperature corrosion inhibitor
A process for the inhibition of corrosion caused by naphthenic acid and sulfur compounds during the elevated temperature processing of crude oil by use of a corrosion inhibitor consisting of trialkylphosphate and an alkaline earth metal phosphonate-phenat...
05/24/1994
5314660Use of cationic alkyl-phosphonium salts as corrosion inhibitors in open recirculating systems
A method for inhibiting corrosion of metals which are in contact with an aqueous system comprising adding to the system, either alone or in combination with organic or metal containing water treatments, a water-soluble cationic alkyl-phosphonium salt in a...
05/24/1994
5077096Non-toxic corrosion inhibitive polymers composition and method therefor
A corrosion inhibiting coating composition for metals comprising a liquid polymer composition which contains a polymer which is capable of being cured to a solid elastomer such as polysulfide, polyurethane, polythioether or polyether and a water soluble a...
12/31/1991
5066460Corrosion inhibition of polymethylpentene
The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates can be added to further reduc...
11/19/1991
5019342Method for mitigation of caustic corrosion in coordinated phosphate/ph treatment programs for boilers
The present invention utilizes low volatility amines or alkanol amines to control caustic corrosion which can take place when a boiler system, treated with a coordinated phosphate/pH program, is "out of control". N-substituted hydroxyalkyl piperazines are also...
05/28/1991
5000917Corrosion inhibition of polymethylphenthene
The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol, diphosphite are reduced. Optionally, metal stearates can be added to further redu...
03/19/1991
4968736Corrosion inhibition of polymethylpentene
The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates can be added to further reduc...
11/06/1990
4941994Corrosion inhibitors for use in hot hydrocarbons
Corrosion of metal surfaces in contact with a hot hydrocarbon stock containing an appreciable amount of naphthenic acid is inhibited by the presence in the hydrocarbon stock of an effective corrosion inhibiting amount of a dialkyl or trialkyl phosphite, a...
07/17/1990
4902443Dicarboxylic acid mono-(2-hydroxydodecyl)-esters, their salts and their use as corrosion inhibitors in aqueous systems
Dicarboxylic acid mono-(2-hydroxydodecyl)-esters corresponding to the following general formula ##STR1## and salts thereof corresponding to the following general formula ##STR2## wherein A represents the radicals ##STR3## and M represe...
02/20/1990
4842716Ethylene furnace antifoulants
An improved method for reducing fouling and corrosion of ethylene cracking furnaces petroleum feedstocks, the improvement comprising treating the petroleum feed stock with at least 10 ppm of a combination of a phosphorous antifoulant compound and a filmin...
06/27/1989
4840720Process for minimizing fouling of processing equipment
This invention relates to processes for inhibiting the degradation, particulate and gum formation of distillate fuel oils prior to or during processing which comprises adding to the distillate fuel oil an effective inhibiting amount of a mixture of (a) a ...
06/20/1989
4793972Corrosion inhibition of polymethylpentene
The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates and/or poly[[6-[(1,1,3,3-...
12/27/1988
4775458Multifunctional antifoulant compositions and methods of use thereof
Multifunctional process antifoulant compositions and methods are disclosed. The compositions comprise (1) a polyalkenylthiophosphonic acid or ester thereof, and at least one additional antifouling component selected from the groups (2), (3) and (4) wherei...
10/04/1988
4752374Process for minimizing fouling of processing equipment
This invention relates to processes for inhibiting the degradation, particulate and gum formation of distillate fuel oils prior to or during processing which comprises adding to the distillate fuel oil an effective inhibiting amount of a mixture of (a) a ...
06/21/1988
4710404Solvent-free coating composition and process for protecting a surface from corrosion
A solvent-free coating composition useful for increasing the corrosion resistance of a surface is provided. The composition comprises a solvent-free coating material and an anti-corrosive agent comprised of a calcined mixture consisting essentially of mag...
12/01/1987
4659480Water treatment polymers and methods of use thereof
Scale control polymers and methods of use are disclosed. The polymers are water soluble and are composed of repeat units formed from an ଱, 댮thylenically unsaturated commpound, and repeat units formed from allyl alkylene phosphite ethers....
04/21/1987
4450088Corrosion inhibited alcohol compositions
Antifreeze or anticorrosive additive compositions and a process for inhibiting the corrosion of aluminum in contact with aqueous liquids are disclosed. The antifreeze compositions comprise a combination of an amino acid, an alkali metal phosphate, a heter...
05/22/1984
4443349Fluorinated aliphatic polyalkylether lubricant with an additive composed of an aromatic phosphine substituted with perfluoroalkylether groups
A lubricant composition comprising a base fluid having the general formula wherein n is an integer, and a corrosion inhibiting amount of an aromatic phosphine with perfluorinated polyalkylether substituents having the general formula ##STR1## wherein...
04/17/1984
4438006Perfluorinated aliphatic polyalkylether lubricant with an additive composed of an aromatic phosphine substituted with perfluoroalkylether groups
A lubricant composition comprising a base fluid having the general formula wherein Rf is CF3 or C2 F5, m and n are integers whose sum is between 2 and 200, and the ratio of m to n is between 0.1 and 10, and a corrosi...
03/20/1984
4438007Perfluorinated aliphatic polyalkylether lubricant with an additive composed of an aromatic phosphine substituted with perfluoroalkylether groups
A lubricant composition comprising a base fluid having the general formula wherein n has a value ranging from 5 to 50, and a corrosion-inhibiting amount of an aromatic phosphine with perfluorinated polyalkylether substituents having the general formula ##...
03/20/1984
4313840Heat transfer oil and method for driving a Freon turbine
Freon stable heat transfer oil comprising polyol ester containing tris-(alkylphenyl) phosphite and benzotriazole ##STR1## or benzotriazole derivative ##STR2## in which R1 and R2 each represents a hydrogen atom or an alkyl ...
02/02/1982
4222932Polyarylene arylate compositions
A stabilized polyarylene ester of an aromatic dicarboxylic acid comprising a synergistically effective amount of an aromatic isocyanate and an aliphatic phosphite....
09/16/1980
4072027Stabilized heat activated heat exchange absorption pair
A stabilized heat exchange medium is disclosed including a fluorocarbon, an absorbant and a tribasic phosphite stabilizer. The preferred absorbants are assymetrical furan derivatives containing at least 1 oxygen with a single bond to an adjacent carbon, a...
02/07/1978
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