Oxygen Organic Compound Containing Patents (Class 252/392)
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Patent number: 4929425Abstract: A method for inhibiting corrosion in industrial cooling waters which contain hardness and a pH of at least 6.5, by dosing the water with a composition which comprises a water-soluble inorganic phosphate capable of inhibiting corrosion in an aqueous alkaline environment and a hydrocarbon polymer containing an N-substituted acrylamide polymers with an amide structure as follows: ##STR1## where R.sub.2 is hydrogen or methyl, where R.sub.1 is a hydrogen or an alkyl and R is alkylene or phenylene, and X is sulfonate, (poly)hydroxyl, (poly)carboxyl or carbonyl, and combinations thereof; or containing derivatized maleic anhydride homo-, co- and terpolymers having N-substituted maleamic acid units, N-substituted maleimide units and maleic acid (and salts) units having a structure as follows: ##STR2## where R.sub.1, R.sub.2 and R.sub.Type: GrantFiled: February 12, 1988Date of Patent: May 29, 1990Assignee: Nalco Chemical CompanyInventors: John E. Hoots, Donald A. Johnson, Dodd W. Fong, James F. Kneller
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Patent number: 4913880Abstract: This invention relates to novel polymeric compositions which are useful for water treatment. These novel compositions are comprised of polymers of .alpha., .beta. ethylenically unsaturated monomer(s), preferably containing carboxylic acid or carboxylic amide functionalities, and amine-containing allyl ether monomers.Type: GrantFiled: March 9, 1989Date of Patent: April 3, 1990Assignee: Betz Laboratories, Inc.Inventors: Fu Chen, William S. Carey
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Patent number: 4902830Abstract: New polyaralkylated hydroxybenzamides were found and a process for their preparation; the polyaralkylated hydroxybenzamides are used as corrosion inhibitors.Type: GrantFiled: June 1, 1988Date of Patent: February 20, 1990Assignee: Bayer AktiengesellschaftInventors: Thomas Scholl, Christian Wegner, Christian Frolich, Artur Botta, Heinz-Joachim Rother
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Patent number: 4898684Abstract: This invention relates to novel polymeric compositions which are useful for water treatment. These novel compositions are comprised of polymers of .alpha.,.beta. ethylenically unsaturated monomer(s), preferably containing carboxylic acid or carboxylic amide functionalities, and amine-containing allyl ether monomers.Type: GrantFiled: July 17, 1989Date of Patent: February 6, 1990Assignee: Betz Laboratories, Inc.Inventors: Fu Chen, William S. Carey
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Patent number: 4895702Abstract: Corrosion of metals in a corrosive atmosphere is reduced by use of a corrosion inhibitor prepared from (1) amino substituted pyrazine compounds such as aminopyrazine and (2) at least one epoxy compound such as the glycidyl ether of a mixture of alkanols having from 12 to 14 carbon atoms.Type: GrantFiled: December 11, 1987Date of Patent: January 23, 1990Assignee: The Dow Chemical CompanyInventor: Gordon C. Fischer
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Patent number: 4892671Abstract: New composition comprises a functional fluid in contact with ferrous metal and a corrosion inhibiting amount of at least one compound of formula (I) ##STR1## or a derivative thereof in which R.sup.1, R.sup.2 and R.sup.3 are, independently, hydrogen, a C.sub.1 -C.sub.15 straight or branched chain alkyl residue, a C.sub.5 -C.sub.12 cycloalkyl residue, a C.sub.6 -C.sub.15 aryl residue or C.sub.7 -C.sub.12 alkaryl residue, and R.sup.4 and R.sup.5 are, independently, hydrogen, 2-hydroxyethyl or 2-hydroxypropyl with the provisos that(a) R.sup.4 and R.sup.5 are not simultaneously hydrogen,(b) when R.sup.4 and R.sup.5 are each --CH.sub.2 --CH.sub.2 --OH, R.sup.1 and R.sup.2 are not simultaneously hydrogen and R.sup.3 is not a pentyl residue and(c) that polyalkylene and phenol or polycarboxylic ester co-additives are absent;as well as salts thereof.Some of the compounds of formula I are new.Type: GrantFiled: January 23, 1989Date of Patent: January 9, 1990Assignee: Ciba-Geigy CorporationInventors: Robert M. O'Neil, John D. Payne
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Patent number: 4891141Abstract: An oxygen scavenger for boiler water includes ascorbic acid neutralized with diethylaminoethanol. The diethylaminoethanol provides condensate treatment for the long and short steam lines and improves the scavenging of the ascorbic acid.Type: GrantFiled: December 11, 1987Date of Patent: January 2, 1990Assignee: DuBois Chemicals, Inc.Inventors: Ronald J. Christensen, Lyle H. Steimel
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Patent number: 4886617Abstract: Novel water soluble polymers containing an hydroxyl alkyl aminoalkylene phosphonate functionality are disclosed. These polymers have utility as deposit control agents effective in a number of water systems such as cooling, boilers conversion coating, paper and pulp processing and gas scrubbing.The polymers are formed from the polymerization of ethylenically unsaturated compounds with a compound having the structure: ##STR1## in which R.sub.1 is an hydroxyl substituted or nonsubstituted lower alkylene group, R.sub.2 is H or lower alyl group, R.sub.3 is a lower alkylene group and M is H or water soluble cation.Type: GrantFiled: May 19, 1989Date of Patent: December 12, 1989Assignee: Betz Laboratories, Inc.Inventors: Fu Chen, Keith Bair
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Patent number: 4882413Abstract: A novel class of polymers and processes used in their preparation are described. The polymers are produced by a reaction between polyfunctional amines and quinones. Some are infusible and intractable. Others are eminently suitable for the production of coatings, adhesives, insulators, etc. Some polymers, in solution in appropriate solvents adhere to metals, siliceous materials, composites with sufficient affinity to displace water. The polymers can be cured by heat or chemicals to an impervious and insoluble material that is not wetted by water.Type: GrantFiled: May 24, 1988Date of Patent: November 21, 1989Inventor: Semih Erhan
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Patent number: 4880907Abstract: Novel oligomeric quinolinium salts are disclosed. These are formed by reacting quinoline oligomers with alkylating agents such as benzyl halide, p-.alpha.-xylenyl dihalide and alkyl sulfates. The novel oligomeric quinolinium salts are useful as metal corrosion inhibitors, and especially as aqueous acid corrosion inhibitors. The novel compounds are represented by the formulae: ##STR1## wherein n and m are integers, with n being greater than 2 and up to about 200 and m being equal to or greater than 1, R is H or an alkyl group having from 1 to about 20 carbon atoms, R.sup.1 is an alkyl group having 1 to about 20 carbon atoms, X.sup.- is a chloride, bromide or iodide and Z.sup.- is an anion selected from BF.sub.4.sup.-, SO.sub.4.sup.=, ClO.sub.4.sup.-, PF.sub.6.sup.- and HSO.sub.4.sup.-.Type: GrantFiled: February 12, 1988Date of Patent: November 14, 1989Assignee: Exxon Research and Engineering CompanyInventor: Long Y. Chiang
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Patent number: 4877552Abstract: Corrosion inhibitors comprising(a) an imidazoline of the formula I ##STR1## in which R.sup.1 is hydrogen, C.sub.1 -C.sub.6 -hydroxyalkyl, C.sub.1 -C.sub.6 -aminoalkyl or C.sub.2 -C.sub.19 -carboxyalky or an ammonium or amine salt thereof and R.sup.2 is hydrogen, C.sub.1 -C.sub.17 -alkyl or C.sub.2 -C.sub.17 -alkenyl,(b) a heterocyclic polyacid of the formula II ##STR2## in which R.sup.3 is C.sub.2 -C.sub.6 -carboxyalkyl or an alkali metal, alkaline earth metal, ammonium or amine salt thereof,(c) at least one alkanolamine of the formula III ##STR3## in which R.sup.4 is C.sub.1 -C.sub.6 -hydroxyalkyl and R.sup.5 and R.sup.6, which can be identical or different, are hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.6 -hydroxyalkyl, and(d) water are outstandingly suitable for the corrosion-inhibiting treatment of shaped iron and steel parts.Type: GrantFiled: August 28, 1987Date of Patent: October 31, 1989Assignee: Ciba-Geigy CorporationInventor: Ulrich Haring
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Patent number: 4874579Abstract: 3-acylamino-1,2,4-triazoles corresponding to the following general formula ##STR1## and 1-acyl-3-amino-1,2,4-triazole corresponding to the general formula ##STR2## in which R is a linear or branched C.sub.1-11 alkyl or phenyl, and mixtures thereof are used as corrosion inhibitors for non-ferrous metals in aqueous systems, oils and oil-containing emulsions.Type: GrantFiled: June 12, 1987Date of Patent: October 17, 1989Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Karl-Heinz Schmid, Josef Penninger, Hinrich Moeller
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Patent number: 4874395Abstract: A corrosion inhibitor composition for hydrocarbon fuels comprising a C.sub.10 -C.sub.24 alkenyl succinic anhydride esterified with between 0.5-1.5 moles of a water-soluble glycol and then neutralized with an amine.The invention also contemplates improved hydrocarbon fuels which comprise a major portion of such fuels which contain small quantities of the above described composition.Type: GrantFiled: September 2, 1988Date of Patent: October 17, 1989Assignee: Nalco Chemical CompanyInventor: George R. Meyer
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Patent number: 4867888Abstract: A series of water-soluble, or at least water-dispersible, corrosion inhibiting solutions are disclosed which contain about 2 ppm to about 70%, preferably about 3 ppm to about 200 ppm, of an ethoxylated, propoxylated alkylphenol amine represented by the formula: ##STR1## wherein R is hydrogen or an alkyl group containing about 5 to about 12 carbon atoms, R' is an alkyl group containing about 5 to about 12 carbon atoms, x equals about 1 to about 20, z equals about 1 to about 20, a equals about 1 to about 20, and b equals about 1 to about 20. The salt reaction products of the instant alkoxylated amine and an organic acid selected from the group consisting of hydroxyacetic acid, a fatty acid, a dicarboxylic acid, a dimer-trimer acid, an acidic phosphorus containing compound, and mixtures thereof are also effective in controlling sour and sweet corrosion.Type: GrantFiled: December 24, 1987Date of Patent: September 19, 1989Assignee: Texaco Inc.Inventor: Frederick W. Valone
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Patent number: 4859418Abstract: Use of the compounds of the formula ##STR1## in which R.sub.1 denotes C.sub.12 -C.sub.26 -alkyl or C.sub.12 -C.sub.26 alkenyl, n denotes a number from 0 to 5, K.sup.(+) denotes a group of the formulae ##STR2## or a group of the formula --(C.sub.2 H.sub.4 O).sub.x H, x denotes a number from 1 to 3, A.sup.(- denotes an anion, R.sub.9 denotes a group of the formula R.sub.1 '-(OCH.sub.2 CH.sub.2).sub.n --, C.sub.8 -C.sub.18 -alkylaryl or aryl-C.sub.8 -C.sub.18 -alkyl, R.sub.1 ' denotes C.sub.14 -C.sub.22 -alkyl or C.sub.14 -C.sub.22 -alkenyl, n denotes a number from 0 to 5 and the radicals R.sub.10 are identical and denote C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl, as corrosion protection agents for metallic materials in aqueous media.Type: GrantFiled: June 26, 1986Date of Patent: August 22, 1989Assignee: Hoechst AktiengesellschaftInventors: Dieter Ohlendorf, Werner Interthal, Friedrich Stoll
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Patent number: 4851149Abstract: Acid cleaning/pickling compositions for metal surfaces containing (A) at least one protein-derived polymer, sugar-derived polymer, sorbitol, tannin, or vinyl-based polymer, (B) at least one iodine or iodine-affording compound; acids solutions prepared therefrom; and methods for their use.Type: GrantFiled: September 21, 1987Date of Patent: July 25, 1989Assignee: Henkel CorporationInventor: Carmen M. Carandang
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Patent number: 4849170Abstract: A composition of matter for inhibition of stress corrosion stainless steels in contact with aqueous and/or polar organic solutions which contain chloride ions and optionally cuprous ions, comprising an aqueous or polar organic solution of a member selected from the group consisting of quaternary ammonium alkylcarbonates and quaternary ammonium benzylcarbonates having the general formula: ##STR1##Type: GrantFiled: September 20, 1988Date of Patent: July 18, 1989Assignee: Enichem Sintesi S.p.A.Inventors: Franco Mizia, Franco Rivetti, Ugo Romano, Luigi Rivola, Giuseppe Civardi
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Patent number: 4846980Abstract: A series of oil soluble to water-dispersible, corrosion inhibiting solutions are disclosed which contain about 2 ppm to about 70%, preferably about 3 ppm to about 200 ppm, of an ethoxylated, propoxylated dialkylphenol amine represented by the formula: ##STR1## wherein R and R' are alkyl groups containing about 5 to about 12 carbon atoms, x equals about 1 to about 10, and z equals about 2 to about 20. The salt and amide reaction products of the instant alkoxylated amine and an organic acid selected from the group consisting of hydroxyacetic acid, a fatty acid, a dicarboxylic acid, a dimer-trimer acid, an acidic phosphorus containing compound, and mixtures thereof are also effective in controlling sour and sweet corrosion. A method is also disclosed for protecting metal from corrosion by contacting the metal with an effective amount of the amine, or the amine/acid or amide reaction products, in a continuous or batch treatment.Type: GrantFiled: December 21, 1987Date of Patent: July 11, 1989Assignee: Texaco Inc.Inventor: Frederick W. Valone
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Patent number: 4830775Abstract: Novel zinc, lead or zinc/lead salts of carboxylic acids of the formula ##STR1## where Y is --CO-- or --SO.sub.2 --, X is H or --NO.sub.2 and n is 1 or 2. The salts, in particular the basic salts of (I), are useful corrosion-inhibitors for coating systems, especially for aqueous or water-dilutable systems.Type: GrantFiled: May 11, 1987Date of Patent: May 16, 1989Assignee: BASF Lacke .+-. Farben AktiengesellschaftInventors: Egon Liedek, Gerhard Haegele
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Patent number: 4814010Abstract: A method for the inhibition of corrosion of metals involves treatment of the metal surface with a polyester having a functional terminal group such as an amine. The polyester may be used together with other corrosion inhibitors, a useful combination being the polyester together with a hydroxy-oxime. The corrosion inhibiting material may be incorporated into a surface coating composition such as paint which is then applied to the metal surface.Type: GrantFiled: January 19, 1988Date of Patent: March 21, 1989Assignee: Imperial Chemical Industries PLCInventor: Bernard Tury
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Patent number: 4798683Abstract: A method for inhibiting corrosion in aqueous systems comprising adding to the system being treated an effective amount of a composition comprising a molybdate ion source and a water-soluble component selected from polymaleic acid anhydride, amine adducts of polymaleic anhydride, maleic anhydride copolymers, carboxylic acid/sulfonic acid polymers, salts of the above-described polymers, phosphonates, phosphino carboxylic acids, polyphosphoric acid and esters of polyphosphoric acid.Type: GrantFiled: April 21, 1988Date of Patent: January 17, 1989Assignee: Calgon CorporationInventors: Bennett P. Boffardi, Susan P. Rey
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Patent number: 4792355Abstract: This invention relates to an aqueous, acidic composition useful to deposit a corrosion inhibiting and adhesion promoting coating on a metal substrate and a method for doing same. The composition has a pH of between about 2 and about 6 and comprises water-soluble or water-dispersible metal-chelating o-hydroxybenzylamine compound, wherein the amine moiety contains pendant ethanol or propanol moiety.Type: GrantFiled: January 20, 1987Date of Patent: December 20, 1988Assignee: Ford Motor CompanyInventors: Walter O. Siegl, Mohinder S. Chattha
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Patent number: 4792417Abstract: A composition of matter for inhibition of stress corrosion of stainless steels in contact with aqueous and/or polar organic solutions which contain chloride ions and optionally cuprous ions, comprising an aqueous or polar organic solution of a member selected from the group consisting of quaternary ammonium alkylcarbonates and quaternary ammonium benzylcarbonates having the general formula: ##STR1##Type: GrantFiled: December 19, 1986Date of Patent: December 20, 1988Assignee: Enichem Sintesi S.p.A.Inventors: Franco Mizia, Franco Rivetti, Ugo Romano, Luigi Rivola, Giuseppe Civardi
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Patent number: 4790878Abstract: This invention relates to an aqueous composition useful to deposit a corrosion inhibiting and adhesion promoting coating on a corrodible metal substrate and a method for doing same. The composition has a pH of between about 2 and about 10 and comprises water-soluble or water-dispersible metal-chelating diphenolamine compounds.Type: GrantFiled: January 20, 1987Date of Patent: December 13, 1988Assignee: Ford Motor CompanyInventors: Walter O. Siegl, Mohinder S. Chattha
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Patent number: 4789523Abstract: Lignin amines are disclosed which are characterized by high nitrogen content and are water soluble at both alkaline and acidic pH values. The lignin amines have utility as flocculants, filtration aids, precipitants, scale inhibitors, asphalt emulsifiers, fluid loss additives, oil well cement additives, corrosion inhibitors, retention aids, cationic dispersants, and tall oil pitch emulsifiers.Type: GrantFiled: March 28, 1988Date of Patent: December 6, 1988Assignee: Westvaco CorporationInventors: Peter Schilling, Patti E. Brown
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Patent number: 4784796Abstract: The reaction of an .alpha.,.beta.-ethylenically unsaturated aldehyde with organic amines which is further reacted with a carboxylic acid, organic halide or an epoxide-containing compound are employed as corrosion inhibitors for preventing corrosion of ferrous metals in contact with corrosive brine, oil and gas well fluids.Type: GrantFiled: May 29, 1987Date of Patent: November 15, 1988Assignee: The Dow Chemical CompanyInventors: Duane S. Treybig, Terry W. Glass
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Patent number: 4784797Abstract: The oligomers prepared by the reaction of an .alpha.,.beta.-ethylenically unsaturated aldehyde with organic amines further reacted with a carboxylic acid, organic halide or an epoxide-containing compound are employed as corrosion inhibitors in a process for preventing corrosion of ferrous metals in contact with corrosive brine, oil and gas well fluids.Type: GrantFiled: May 29, 1987Date of Patent: November 15, 1988Assignee: The Dow Chemical CompanyInventors: Duane S. Treybig, Terry W. Glass
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Patent number: 4778728Abstract: Compositions comprising an amine-reactive vinyl polymer and a polyfunctional amine crosslinker when combined with a benzotriazole or a polypyridyl, alone, or in further combination with 2-hydroxypyridine cure into coatings having superior corrosion resistance.Type: GrantFiled: October 8, 1987Date of Patent: October 18, 1988Assignee: American Cyanamid CompanyInventor: Howard R. Lucas
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Patent number: 4762627Abstract: The thermally rearranged oligomers prepared by the reaction of an .alpha.,.beta.-ethylenically unsaturated aldehyde with organic amines are thermally rearranged to give a more thermally stable product with labile amino hydrogens available for further reaction, after reaction with a carboxylic acid, organic halide or an epoxide containing compound are employed as corrosion inhibitors in a process for preventing corrosion of ferrous metals in contact with corrosive brine, oil and gas well fluids.Type: GrantFiled: March 24, 1987Date of Patent: August 9, 1988Assignee: The Dow Chemical CompanyInventors: Robert G. Martinez, Duane S. Treybig, Terry W. Glass
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Patent number: 4762628Abstract: The invention relates to non-aqueous functional fluids which contain at least one compound of formula I ##STR1## wherein X is --O--, --S--, --SO--, --SO.sub.2 --, --C(O)--O-- or --N(R.sup.3)--, in which R.sup.3 is hydrogen or C.sub.1 -C.sub.12 alkyl, R.sup.1 unsubstituted C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.5 alkyl substituted by one to three hydroxyl groups, R.sup.2 is hydrogen, unsubstituted C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.5 alkyl substituted by one to three hydroxyl groups, with the proviso that at least one of the residues R.sup.1 or R.sup.2 is hydroxy-substituted, and wherein R is C.sub.2 -C.sub.20 -alkyl, a residue --CH.sub.2 --CH(OH)--CH.sub.2 --NR.sup.1 R.sup.2, in which R.sup.1 and R.sup.2 have their previous significance, or R is C.sub.2 -C.sub.18 alkenyl, C.sub.2 -C.sub.3 alkynyl or C.sub.5 -C.sub.12 cycloalkyl, with the proviso that, when X is --O-- or --C(O)--O--, R is branched C.sub.4 -C.sub.20 alkyl, especially a tertiary alkyl group.Type: GrantFiled: March 12, 1986Date of Patent: August 9, 1988Assignee: Ciba-Geigy CorporationInventors: Emyr Phillips, Robert M. O'Neil, Hermann O. Wirth
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Patent number: 4751324Abstract: Benzoyl alanines having the formula: ##STR1## in which the symbols R.sup.1 and R.sup.2 (a) both represent hydrogen or(b) both represent a straight-chain or branched chain alkyl residue having from 1 to about 6 carbon atoms, or(c) R.sup.1 represents hydrogen and R.sup.2 represents a straight-chain or branched chain alkyl residue having from 1 to about 6 carbon atoms and in which the symbol R.sup.3 represents a C(CH.sub.3).sub.m (CH.sub.2 OH).sub.3-m moiety wherein the symbol m represents an integer of from 0 to 3and alkali metal and ammonium salts thereof, are disclosed.The compounds are useful as corrosion-inhibitors for metals in aqueous systems.Type: GrantFiled: June 13, 1986Date of Patent: June 14, 1988Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Josef Penninger, Karl H. Schmid, Juergen Geke
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Patent number: 4747963Abstract: Disclosed are polyaminoalkenyl or alkyl succinimides which have been modified by treatment with a compound of the formula: ##STR1## wherein W is oxygen or sulfur; X is oxygen or sulfur; R.sub.4 is an alkylene group of from 2 to 3 carbon atoms or an alkylene group of from 2 to 3 carbon atoms substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each; and R.sub.5 is hydrogen or alkyl of from 1 to 20 carbon atoms. The modified polyamino alkenyl or alkyl succinimides of this invention have been found to possess dispersancy and detergency in lubricating oils. These modified succinimides are also useful as dispersants and detergents in fuels.Type: GrantFiled: May 5, 1987Date of Patent: May 31, 1988Assignee: Chevron Research CompanyInventor: Robert H. Wollenberg
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Patent number: 4744948Abstract: A series of water-dispersible corrosion inhibiting solutions and a method of using these solutions are disclosed which contain a thiol ester represented by the formula ##STR1## wherein R is an alkyl group having about 8 to about 22 carbon atoms, or an alkyl or alkylaryl group that is the nucleus of a dimerized fatty acid having about 28 to about 36 carbon atoms, X is a dithiol having about 1 to about 5 carbon atoms, m=0 where R has about 8 to about 22 carbon atoms, m=0 or 1 where R has about 28 to about 36 carbon atom. It has been discovered that the use of these thiol esters along or the addition of the thiol esters to organic inhibitor systems reduces corrosion.Type: GrantFiled: June 4, 1987Date of Patent: May 17, 1988Assignee: Texaco Inc.Inventor: Michael J. Incorvia
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Patent number: 4737159Abstract: A corrosion inhibitor for use in liquid hydrocarbon fuels or gasoline oxygenate blends is disclosed. The corrosion inhibitor contains from 35 to 70 wt % of a monoalkenylsuccinic acid wherein the alkenyl group has 8 to 18 carbon atoms, from about 30 to 65 wt % of an aliphatic or cycloaliphatic amine containing 2 to 12 carbon atoms and up to 50 wt % of total solvents consisting of aromatic hydrocarbons and alcohols of 1 to 4 carbons per molecule.The corrosion inhibitor can also be used in inhibited alcohol compositions such as those used in gasoline oxygenate blends.Type: GrantFiled: June 29, 1984Date of Patent: April 12, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventor: Tayman A. Phillips
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Patent number: 4734257Abstract: The present invention provides a method of inhibiting the corrosion of nonferrous metals using an anticorrosive agent selected from 3-amino-5-(.omega.-hydroxy-n-alkyl)-1,2,4-triazoles having the general formula: ##STR1## wherein x is an integer in the range of from 1 to 12; salts of the compounds of formula (I) with inorganic acids; and salts of the compounds of formula (I) with organic acids.Type: GrantFiled: May 20, 1986Date of Patent: March 29, 1988Assignee: Henkel Kommanditgesellschaft auf AktienInventor: Josef Penninger
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Patent number: 4734203Abstract: This invention discloses a method of improving the constitution of boiler water by adding thereto an effective amount of a copper transport agent which is either rubeanic acid or a low molecular weight polymer of polypiperazine methyl-para-hydroxysulfonic acid or polypiperazine methyl-para-hydroxybenzoic acid. The copper transport agent satisfactorily separates the copper from iron, calcium, magnesium and other heavy metals with a high degree of selectivity. The chelant may be added in a ratio of 100/1 to 10/1 chelant/copper and an advantageous ratio in the case of the polymer is 50/1 ppm active polymer to 1 ppm Cu. The chelants, which form a soluble chelate with Cu, is capable of removing Cu through boiler blowdown in an operating, layup or cleanup boiler. This adds an anti-corrosion factor to the galvanized boiler corrosion.Type: GrantFiled: March 3, 1987Date of Patent: March 29, 1988Assignee: Nalco Chemical CompanyInventors: Mei-Jan L. Lin, Frederick J. Sibert
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Patent number: 4729841Abstract: The use, as anticorrosion agents, of alkenylsuccinic acid half-amides of the formulae ##STR1## in which R denotes C.sub.6 -C.sub.12 -alkenyl and M denotes a proton or an ammonium ion of the formula NHR.sub.1 R.sub.2 R.sub.3 and R.sub.1, R.sub.2 and R.sub.3 are identical or different and denote hydrogen, C.sub.1 -C.sub.12 -alkyl, 2-hydroxyethyl or 2-hydroxypropyl.Type: GrantFiled: July 9, 1986Date of Patent: March 8, 1988Assignee: Hoechst AktiengesellschaftInventors: Werner Ritschel, Horst Lorke
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Patent number: 4728497Abstract: A method for reducing the amount of oxygen in an oxygen-containing aqueous medium comprising adding to the medium an effective amount of a hydrazine-free aqueous solution of an aminophenol compound or acid salt thereof having the formula ##STR1## where a=1, 2, or 3;b is 0 or 1 andx=amino or alkylamino (C1-C4).Type: GrantFiled: December 15, 1980Date of Patent: March 1, 1988Assignee: Betz Laboratories, Inc.Inventor: John A. Muccitelli
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Patent number: 4726914Abstract: A corrosion inhibitor for mild steel comprising the combination of trimethylolethane or trimethylolpropane with a disclosed alkanolamine.Type: GrantFiled: October 10, 1986Date of Patent: February 23, 1988Assignee: International Minerals & Chemical Corp.Inventors: Larry A. Fellows, Paul E. Eckler
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Patent number: 4725373Abstract: New compositions of matter are disclosed which are the products resulting from reacting an alkyl substituted aromatic heterocyclic nitrogen-containing compound such as 2,4,6-trimethylpyridine or 2,3,5,6-tetramethylpyrazine with a dicarboxylic acid monoanhydride such as 2-dodecen-1-yl succinic anhydride. These compositions are useful in preventing corrosion of metallic articles in corrosive environments. They are particularly useful in down hole oil and gas well applications.Type: GrantFiled: February 24, 1986Date of Patent: February 16, 1988Assignee: The Dow Chemical CompanyInventors: Duane S. Treybig, James L. Potter
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Patent number: 4724124Abstract: The use, as anti-corrosion agents, of alkenylsuccinic acid half-amides of the formulae ##STR1## in which R denotes C.sub.6 -C.sub.18 -alkenyl, R.sup.1 denotes C.sub.12 -C.sub.18 -alkyl and K denotes a proton, an alkali metal ion or an ammonium ion of the formula NHR.sup.2 R.sup.3 R.sup.4, and R.sup.2, R.sup.3 and R.sup.4 are identical or different and denote hydrogen, C.sub.1 -C.sub.12 -alkyl, 2-hydroxyethyl or 2-hydroxypropyl.Type: GrantFiled: September 26, 1986Date of Patent: February 9, 1988Assignee: Hoechst AktiengesellschaftInventors: Werner Ritschel, Horst Lorke
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Patent number: 4722812Abstract: Salts of alkenylsuccinic acid monoamides of the formulae ##STR1## wherein R.sup.1 is C.sub.6 -C.sub.22 -alkenyl, preferably C.sub.9 -C.sub.18 -alkenyl, A is the protonized radical of an amidoamine of the formula II ##STR2## R.sup.2 is C.sub.5 -C.sub.22 -alkyl, preferably C.sub.10 -C.sub.18 -alkyl, C.sub.5 -.sub.22 -alkenyl or cycloalkyl, preferably C.sub.10 -C.sub.18 -alkenyl or cycloalkyl, R.sup.3 is a group of the formula ##STR3## R.sup.4 is either a group of the formula --COR.sup.2, R.sup.5 at the same time being hydrogen, or R.sup.4 and R.sup.5 at the same time have the same meaning as R.sup.3, Y is hydrogen or methyl, n is a number from 0 to 12 and x is a number from 1 to 3. These compounds are suitable as corrosion inhibitors in water-in-oil emulsions, in particular for petroleum and petroleum products.Type: GrantFiled: January 14, 1986Date of Patent: February 2, 1988Assignee: Hoechst AktiengesellschaftInventors: Werner Ritschel, Hermann Hoffmann
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Patent number: 4719084Abstract: Water-soluble corrosion-inhibiting mixtures containing(a) one or more ammonium salts of fatty acids corresponding to the following general formula ##STR1## in which n=1 or 2 while R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may be the same or different and represent hydrogen, unbranched or branched C.sub.1 -C.sub.6 alkyl groups, C.sub.1 -C.sub.6 hydroxyalkylene groups or C.sub.1 -C.sub.8 aminoalkylene groups and R.sup.5 represents C.sub.6 -C.sub.10 alkyl groups, and(b) one or more polyol fatty acids and/or salts thereof corresponding to the following general formula ##STR2## in which R.sup.6 is a C.sub.1 -C.sub.19 alkyl or alkylene group and R.sup.7 represents an organic residue formed from a dihydroxy or polyhydroxy compound by elimination of a hydroxyl group, M.sup.(+) =H.sup.(+), Na.sup.(+), K.sup.(+) or an ammonium ion [R.sup.1 R.sup.2 R.sup.3 R.sup.4 N].sup.Type: GrantFiled: March 20, 1987Date of Patent: January 12, 1988Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Karl H. Schmid, Alfred Meffert, Bert Gruber
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Patent number: 4717541Abstract: A product having corrosion inhibiting properties consisting essentially of the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of cyclohexylamine and a dicyclohexylamine; a composition having corrosion inhibiting properties consisting essentially of a carrier liquid and disposed therein the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of a cyclohexylamine and a dicyclohexylamine; a combination of a solid body carrying thereon a product having corrosion inhibiting properties consisting essentially of the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of a cyclohexylamine and a dicyclohexylamine; and a process for inhibiting corrosion of metal surface by contacting the same with the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of a cyclohexylamine and a dicyclohexylamine.Type: GrantFiled: February 11, 1987Date of Patent: January 5, 1988Inventor: Maurice S. Baseman
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Patent number: 4717492Abstract: A product of reaction suitable for use as a lubricant additive made by reacting a preformed Mannich base with a reactive hydrocarbyl amine, thiol or dithiophosphoric acid having at least one reactive hydrogen.Type: GrantFiled: December 27, 1985Date of Patent: January 5, 1988Assignee: Mobil Oil CorporationInventor: Sheldon Chibnik
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Patent number: 4705666Abstract: The C.sub.2-4 -alkanolamine salts of alkenyl succinic acid dialkyl semiamides are used as corrosion inhibitors in aqueous systems.Type: GrantFiled: October 30, 1984Date of Patent: November 10, 1987Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Alfred Struve, Horst Upadek, Juergen Geke
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Patent number: 4705642Abstract: A haze, oxidation, and corrosion resistant diesel engine lubricant composition, particularly useful in marine and railway diesel engines, contains 0.1-5.0 weight percent of a reaction product additive. The reaction product additive is produced by first reacting substantially equimolar amounts of an anhydride compound which is either a dibasic acid anhydride or isatoic anhydride and a hydrocarbon-substituted mono primary amine or ether amine at a temperature range of 50.degree. C.-150.degree. C. to produce an intermediate reaction product. The intermediate reaction product is thereafter further reacted at an elevated temperature with a substantially equimolar amount of a heterocyclic azole or polyalkylene polyamine compound to form the final reaction product.Type: GrantFiled: December 23, 1986Date of Patent: November 10, 1987Assignee: Texaco Inc.Inventors: Rodney L. Sung, Benjamin H. Zoleski, Ronald L. O'Rourke
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Patent number: 4686084Abstract: Benzoyl alanines of the formula ##STR1## in which R.sup.1 and R.sup.2 can be the same or different and represent hydrogen or an alkyl radical containing from 1 to 12 carbon atoms and R.sup.3 and R.sup.4 can be the same or different and represent hydrogen, an unbranched or branched alkyl radical containing from 1 to 10 carbon atoms, hydroxyalkyl, alkoxyalkyl, carboxyalkyl or alkylaminoalkyl radicals containing from 1 to 3 carbon atoms in the alkyl radicals and wherein R.sup.3 and R.sup.4 together can be the --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 -- group or the --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 -- group which form with the nitrogen atom the morpholino or the piperidino ring, respectively; with the proviso that(a) when R.sup.1 is hydrogen or methyl and R.sup.2 and R.sup.3 are hydrogen, R.sup.4 cannot represent hydroxyethyl or carboxymethyl, and(b) when R.sup.1 is hydrogen or methyl and R.sup.2 is hydrogen R.sup.3 and R.sup.4 cannot both represent hydroxyethyl, and(c) when R.sup.1 and R.sup.Type: GrantFiled: March 18, 1985Date of Patent: August 11, 1987Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Juergen Geke, Josef Penninger
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Patent number: 4683081Abstract: Improved low-foaming, water-soluble, rust-preventative compositions comprise a partial amide of an alkanolamine and unsaturated dicarboxylic acid, together with an aliphatic dicarboxylic acid salt of an alkanolamine.Type: GrantFiled: June 27, 1986Date of Patent: July 28, 1987Assignee: Ferro CorporationInventors: Karl P. Kammann, Jr., Kathleen A. Troxel
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Patent number: 4675125Abstract: Improved multi-purpose metal cleaning compositions are provided comprised of 5 to 40 parts by weight ethoxylated aliphatic alcohol or ethoxylated alkylphenol, 4 to 20 parts by weight alkanolamine salt of a fatty acid, 2 to 15 parts by weight boramide, 2 to 15 parts by weight alcohol, glycol or ether glycol, 0.05 to 2.5 parts by weight antifoam agent, and 5 to 98 parts by weight water. In addition to being highly effective cleaners for the removal of grease, oil, dirt, scale and metal fines, the compositions of this invention also provide a non-sticky and non-greasy corrosion-resistant protective barrier on the surface of the metal.Type: GrantFiled: May 19, 1986Date of Patent: June 23, 1987Assignee: Cincinnati-Vulcan CompanyInventor: Robert J. Sturwold