Abstract: A microbial inhibiting composition and method is disclosed. The composition comprises an amount, effective for the intended purpose of diiodomethyl-p-tolylsulfone and bis trichloro methyl sulfone. The method comprises administering an amount of this combined treatment to the particular water containing system for which treatment is desired.
Type:
Grant
Filed:
January 19, 1994
Date of Patent:
May 16, 1995
Assignee:
Betz Laboratories, Inc.
Inventors:
Deborah K. Donofrio, Wilson K. Whitekettle
Abstract: Method for inhibiting dust emissions from hot (>150.degree. F.) substrates are provided which comprise adding to the substrate an aqueous solution of sodium silicate.
Abstract: A composition and method for inhibiting corrosion of iron and iron-containing metals in contact with aqueous systems containing sulfide compounds. The composition comprises (A) an aqueous solution of an alcohol, an acid, a fatty imidazoline, and an ethoxylated fatty diamine, and (B) an aqueous solution of a molybdate compound or salt thereof.
Type:
Grant
Filed:
February 25, 1994
Date of Patent:
May 16, 1995
Assignee:
Betz Laboratories, Inc.
Inventors:
J. Michael Brown, James R. Ohlsen, Richard D. McBride
Abstract: A microbial inhibiting composition and method is disclosed. The composition comprises an amount, effective for the intended purpose of diiodomethyl-p-tolylsulfone and B-bromo-B-nitrostyrene. The method comprises administering an amount of this combined treatment to the particular water containing system for which treatment is desired.
Type:
Grant
Filed:
January 19, 1994
Date of Patent:
May 16, 1995
Assignee:
Betz Laboratories, Inc.
Inventors:
Wilson K. Whitekettle, Deborah K. Donofrio
Abstract: Methods and compositions are provided for inhibiting the polymerization of butadiene-containing streams during elevated temperature processing thereof or during storage or shipment of monomer containing product. The composition comprises a combination of (a) a phenylenediamine compound having at least one N--H bond and (b) a hydroxytoluene compound. The methods comprise adding from about 1-250 ppm of the combination to the monomer medium, per one million parts of medium.
Abstract: A non-chromium conversion coating for metal surfaces such as aluminum, steel, galvanized steel and zinc-aluminum steel consisting of an aqueous solution of an anionic polyacrylamide copolymer, an inorganic silicate and an organofunctional silane.
Type:
Grant
Filed:
October 15, 1993
Date of Patent:
May 2, 1995
Assignee:
Betz Laboratories, Inc.
Inventors:
Brenda S. Morris, Jiangbo Ouyang, David W. Reichgott
Abstract: A method of inhibiting the formation and deposition of scale in the production of hydrocarbons from subterranean reservoirs. The method is particularly effective at inhibiting the formation and deposition of calcium and barium scales in the produced waters of hydrocarbon recovery operations. The method comprises introducing into the produced water a polyepoxysuccinic acid of the general formula: ##STR1## where n ranges from about 2 to about 11, M is hydrogen or a water soluble cation such as Na.sup.+, NH.sub.4.sup.+, K.sup.+ and R is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 substituted alkyl.
Abstract: A process for measuring the coating weight of a dried-in-place non-chromate polyacrylamide/surfactant based conversion coating is disclosed. An ammonium hexafluorotitanate tracer added to such a conversion coating was found to not adversely affect coating properties. The tracer was found to remain proportional to the polymer matrix when the coating was analyzed by X-ray fluorescence.
Abstract: Methods and compositions for removing deposits from surfaces in contact with the water of a cooling water system are disclosed. The combination of a chelant, a phosphonate or phosphate compound, and a base is effective in removing clay deposits from such surfaces.
Type:
Grant
Filed:
January 14, 1994
Date of Patent:
March 28, 1995
Assignee:
Betz Laboratories, Inc.
Inventors:
Donald T. Freese, Raymond M. Post, David M. Polizzotti
Abstract: Methods and compositions for removing deposits from surfaces in contact with the water of a cooling water system are disclosed. A lignosulfonate compound, alone or in combination with other materials, is effective in removing such deposits.
Type:
Grant
Filed:
September 8, 1993
Date of Patent:
March 28, 1995
Assignee:
Betz Laboratories, Inc.
Inventors:
Donald T. Freese, Raymond M. Post, Edmund J. Bockowski
Abstract: Disclosed are compositions and methods for inhibiting polymerization of ethylenically unsaturated monomers. The compositions comprise a methoxyphenol compound selected from the group consisting eugenol and 2-tert-butyl-4-hydroxyanisole and a phenylenediamine compound. The methods comprise adding from about 1 to about 10,000 parts per million to the ethylenically unsaturated monomer during processing.
Abstract: Methods and compositions are provided for inhibiting the polymerization of vinyl aromatic monomers under distillation conditions. The compositions comprise a combination of a phenylenediamine compound and a hydroxylamine compound.
Abstract: A method for the inhibition of silica and silicate deposits on the internal surfaces of a water system consisting of adding to the water system a composition comprised of a blend of two water soluble copolymers. The first copolymer contains repeat units of maleic or acrylic acids and a phosphinic acid, or salt forms thereof. The second copolymer contains repeat units of acrylic acid and allyl hydroxy propyl sulfonate ether, or salt forms thereof.
Type:
Grant
Filed:
June 22, 1993
Date of Patent:
February 28, 1995
Assignee:
Betz Laboratories, Inc.
Inventors:
Libardo A. Perez, J. Michael Brown, Khac T. Nguyen
Abstract: A biocidal composition and method for inhibiting and controlling the growth of microorganisms are disclosed. The composition comprises an amount, effective for the intended purpose, of polyvinyl alcohols and gallic or boric acids, in combination with additional biocidal components, the composition in a gel form. The method comprises administering an amount of the gelled composition to the particular water containing system for which treatment is desired.
Abstract: Disclosed are methods for dispersing sulfur in aqueous systems comprising adding an alkylcarboxylic acid compound to the system. This prevents fouling of the aqueous system by the precipitated sulfur.
Abstract: A biocidal composition and method for inhibiting and controlling the growth of microorganisms are disclosed. The composition comprises an amount, effective for the intended purpose, of polyethylene glycols and bis(trichloro methyl) sulfone, in combination with additional biocidal components, the composition in a gel form. The method comprises administering an amount of the gelled composition to the particular water containing system for which treatment is desired.
Abstract: Methods of forming a dried in place conversion coating on metal surfaces such as aluminum and aluminum alloys. The methods comprise contacting the metal with an aqueous solution of a water soluble maleic or acrylic acid/allyl ether copolymer alone or with an acid.
Abstract: Methods and compositions for controlling foam in high temperature hydrocarbons during processing animal oils, exemplified by mink oil, are added to the hydrocarbon to control foam.
Abstract: A non-chromate conversion coating for metal surfaces such as aluminum, steel, galvanized steel and zinc-aluminum steel consisting of an aqueous solution of a cationic polymer, an alkaline aqueous silicate and an organofunctional silane.
Type:
Grant
Filed:
November 16, 1993
Date of Patent:
February 14, 1995
Assignee:
Betz Laboratories, Inc.
Inventors:
Deborah L. Purnell, Brenda S. Morris, David W. Reichgott
Abstract: A method for clarifying the laser print deinking loop water in a papermaking process by using a water soluble graft copolymer having the structure: ##STR1## wherein E is the repeat unit obtained after polymerization of an .alpha.,.beta. ethylenically unsaturated compound, the molar percentage of a:b is from about 95:5 to 5:95, with the proviso that the sum of a and b equals 100%; G comprises the structure: ##STR2## wherein d is a cationic monomer, R.sub.1, R.sub.2 and R.sub.3 are the same or different and are hydrogen or a lower alkyl group having C.sub.1 to C.sub.3, F is the salt of an ammonium cation and the molar percentage of c:d is from 95:5 to 5:95 with the proviso that the sum of c and d equals 100%.
Type:
Grant
Filed:
December 17, 1993
Date of Patent:
February 7, 1995
Assignee:
Betz Laboratories, Inc.
Inventors:
Wen P. Liao, John C. Harrington, Walter J. Burgess, Fu Chen