Thickener Or Dispersant For Aqueous System Patents (Class 526/932)
  • Patent number: 9034996
    Abstract: The present invention relates to a production method for efficiently obtaining an acrylic acid-based polymer having a narrow molecular mass distribution and a low molecular mass, without using a large amount of chain transfer agent. A method for continuously producing an acrylic acid-based polymer obtained by continuously polymerizing a monomer having acrylic acid as an essential component, characterized in that a liquid feed pump applies a mechanical load of 0.5 to 2.5 kJ/L to the liquid discharged from the outlet of a reactor. An acrylic acid-based polymer having fewer high-molecular-mass components, excellent dispersion and other properties, and a low molecular mass is thereby obtained.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: May 19, 2015
    Assignee: TOAGOSEI CO., LTD.
    Inventor: Masahiro Fujiwara
  • Patent number: 8883945
    Abstract: A compound of the formula R1.[(AO)n.—R2]m (I) where: R1 is the residue of a group having at least m active hydrogen atoms; AO is an alkylene oxide residue; each n is independently from 1 to 100; m is at least 2; and each R2 is independently H, a C1 to C21 hydrocarbyl, or an acyl group —OC.R3, where R3 is a C1 to C21 hydrocarbyl group, wherein on average greater than one of the R2 groups is or comprises a C4 to C21 hydrocarbyl group comprising at least two ethylenic double bonds. The compounds are particularly suitable for use in preparing aqueous emulsions or dispersions of resins and polymers, especially alkyd resins.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: November 11, 2014
    Assignees: Croda International PLC, Croda Americas LLC
    Inventors: William Harry McNamee, Trevor Graham Blease, Johnny Denis Grade, Hanamanthsa Shankarsa Bevinakatti
  • Patent number: 8859656
    Abstract: Emulsions containing acrylic associative thickening agents which, when polymerized in the presence of particular polyglycerols, have a thickening power which is remarkably stable over time.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: October 14, 2014
    Assignee: Coatex
    Inventors: Jean-Marc Suau, Denis Ruhlmann
  • Patent number: 8063265
    Abstract: A hydrogel having a floatability where from 40% to 90% of a solution and/or suspension to be thickened are thickened starting from the surface of the liquid and the rest of the solution and/or suspension to be thickened is thickened starting from the bottom of the container, a process for preparing the hydrogel and also its use for absorbing blood and/or body fluids, especially in hygiene articles, or for thickening aqueous solutions and/or suspensions, especially for thickening medical wastes.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: November 22, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Beck, Volker Frenz, Anna Kowalski, Elisabeth Selzer, Ernst Jürgen Bauer, Harald Keller, Bernhard Steinmetz
  • Patent number: 6995221
    Abstract: A process for producing organic peroxide initiators useful in the polymerization of ethylenically unsaturated monomers. The process for making the organic peroxides includes forming an aqueous emulsion of the organic peroxide. The organic peroxide is dispersed as small droplets of from 1 to 10 microns in size in the aqueous emulsion. The organic peroxide may be added to a polymerization reactor containing an ethylenically unsaturated monomer. The organic peroxide functions as a free radical initiator to polymerize the monomer. The organic peroxide may be substantially free of organic solvents and plasticizers. The resulting polymers are of high quality.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: February 7, 2006
    Assignee: Oxy Vinyls, L.P.
    Inventors: Ross J. Cozens, Qi Wang, M. Frederick V. Glock, Jr., Daniel A. Zust
  • Patent number: 6974852
    Abstract: An emulsifier system comprising a) a salt of a sulfuric monoester of a C9-C15 alcohol or of an alkoxylated C9-C15 alcohol, and b) an alkoxylated C8-C16 alcohol, and the use of this emulsifier system for preparing aqueous polymer dispersions.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: December 13, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Stanger, Peter Keller, Eckehardt Wistuba, Andree Dragon
  • Publication number: 20040249097
    Abstract: A process for producing organic peroxide initiators useful in the polymerization of ethylenically unsaturated monomers. The process for making the organic peroxides includes forming an aqueous emulsion of the organic peroxide. The organic peroxide is dispersed as small droplets of from 1 to 10 microns in size in the aqueous emulsion. The organic peroxide may be added to a polymerization reactor containing an ethylenically unsaturated monomer. The organic peroxide functions as a free radical initiator to polymerize the monomer. The organic peroxide may be substantially free of organic solvents and plasticizers. The resulting polymers are of high quality.
    Type: Application
    Filed: May 6, 2003
    Publication date: December 9, 2004
    Inventors: Ross J. Cozens, Qi Wang, M. Frederick V. Glock, Daniel A. Zust
  • Patent number: 6770719
    Abstract: A process for producing peroxydicarbonates comprising first reacting at least one inorganic peroxide with at least one alkali metal hydroxide to form at least one alkali metal peroxide. The at least one alkali metal peroxide is added to a mixture of at least one haloformate, at least one dispersant and water. The mixture is homogenized during the entire reaction to form a peroxydicarbonate. The peroxydicarbonate is dispersed as small droplets of from 1 to 10 microns in size in the aqueous mixture. The entire mixture is added to a polymerization reactor containing an ethylenically unsaturated monomer. The peroxydicarbonate functions as the free radical initiator to polymerize the monomer. The peroxydicarbonate is substantially free of organic solvents and plasticizers. The resulting polymers are of high quality.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: August 3, 2004
    Assignee: Oxy Vinyls, L.P.
    Inventor: Ross James Cozens
  • Patent number: 6673885
    Abstract: Disclosed in the present invention is a process for preparing a (meth)acrylic acid-based polymer having a stable quality and suitable as a dispersant for cement. That is, the present invention provides a process for preparing a (meth)acrylic acid-based polymer, comprising the steps of the stage 1 of introducing (meth)acrylic acid and a polyalkylene glycol monoalkyl ether at a molar ratio in the range of 3:l to 50:1, subjecting them to an esterification reaction in the presence of an acid catalyst and a polymerization inhibitor and deactivating the acid catalyst with an alkaline agent in order to obtain an esterification product containing a (meth)acrylate and (meth)acrylic acid residues and the stage 2 of copolymerizing the (meth)acrylate and the (meth)acrylic acid residues at a pH value in the range of 1.5 to 3.5.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: January 6, 2004
    Assignee: Kao Corporation
    Inventors: Kengo Shibata, Haruya Minou, Haruyuki Sato, Toshinao Ukena, Yoshinao Kono
  • Patent number: 6660252
    Abstract: The invention relates to multiple emulsions comprising a primary emulsion in an external phase, and comprising a principle water phase and a principle oil phase, the multiple emulsion containing no more than about 1% of an emulsifier having an HLB of about 16 to about 20.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: December 9, 2003
    Assignee: Color Access, Inc.
    Inventors: Michelle Matathia, Charles Craig Tadlock
  • Patent number: 6623658
    Abstract: An additive for controlling the detrimental effects of secondary recycled contaminants in the papermaking process. In the preferred embodiment, the additive includes a first low molecular weight, cationic water-soluble polymer and a second low molecular weight, cationic, water-soluble polymer, wherein the first low molecular weight, cationic, water-soluble polymer and the second low molecular weight, cationic, water-soluble polymer are co-reacted. In the preferred embodiment, the effective amount of the additive is determined by measuring about a 50 PPM reduction in soluble charge of the liquid base after adding the additive to the liquid base. In the most preferred embodiment, the reduction in soluble charge is between about 50 and 150 PPM as measured by determining the electrophoretic mobility of the liquid base with and without the additive.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: September 23, 2003
    Assignee: Industrial Chemical Consultants
    Inventor: Charles William Robinson, Jr.
  • Patent number: 6620870
    Abstract: Pressure-sensitive adhesives comprising an aqueous polymer dispersions wherein the polymer is composed of from 50 to 99.9% by weight of at least one C1-C12 alkyl (meth)acrylate (monomers a) from 0.05 to 20% by weight of at least one vinylaromatic compound (monomers b) from 0.05 to 10% by weight of at least one ethylenically unsaturated hydroxy compound (monomers c) from 0 to 10% by weight of an ethylenically unsaturated acid or an acid anhydride (monomers d) and from 0 to 30% by weight of other ethylenically unsaturated compounds (monomers e) the weight percentages being based on the polymer, and the polymer dispersion comprising an emulsifier consisting to the extent of at least 5% by weight of aromatic carbon atoms (and called aromatic emulsifier for short) or an emulsifier mixture consisting to the extent of at least 10% by weight of an aromatic emulsifier.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: September 16, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Gerst, Gerhard Auchter, Bernhard Schuler
  • Patent number: 6620880
    Abstract: An environmentally friendly stable aqueous optionally structured water-resistant architectural coating composition (especially a paint) containing a film-forming binder polymer composed of a starch modified by the presence of carboxylic acid or inorganic carboxylate groups and bonded (probably grafted) to chains of copolymerized mono-ethylenically unsaturated monomers (e.g. “acrylic”, “vinyl” or “styrenic” copolymers) permitting a stable aqueous dispersion of the binder polymer to be made which retains good water-resistance in the dried paint. The modified starch allows paints to be made with less dependence on materials obtained from non-renewable resources whilst retaining a low water-sensitivity.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: September 16, 2003
    Assignee: Imperial Chemical Industries PLC
    Inventors: Susan Mary Horley, Stephen Arthur Wheeler
  • Publication number: 20030153787
    Abstract: Compounds of the formula R2.[(AO)n.R3]m, where R2 is a residue of a group having at least m active hydrogen atoms derived from hydroxyl and/or amino and/or amido groups, AO is alkyleneoxy, n is 2 to 200; R3 includes residue(s) of alkenyl succinic acids and optionally other acids, and m is 2 to 10, but when m is 2 there are other restrictions in the definitions, are disclosed as useful thickeners and/or dispersants in aqueous systems. The use of such materials as thickeners is also disclosed.
    Type: Application
    Filed: December 10, 2002
    Publication date: August 14, 2003
    Applicant: Imperial Chemical Industries PLC
    Inventors: Neil Michael Carpenter, Steven John Anderson, Richard Robert Tenore, Peter Glynn Hibbert
  • Patent number: 6602950
    Abstract: A hydrophilic, highly swellable hydrogel based on (co)polymerized monomers or based on graft (co)polymers and prepared by a) free-radically (co)polymerizing one-or more hydrophilic monomers or graft (co)polymerizing one or more hydrophilic monomers onto a grafting base, the average degree of neutralization of the acid-functional monomers being from 0 to 40 mol %, b) comminuting the acidic hydrogel, c) neutralizing the acidic hydrogel to an ultimate degree of neutralization of 50-85 mol % by adding a neutralizing agent, d) drying, grinding and sieving the hydrogel particles characterized by a centrifuge retention and a vertical absorption swell height, each having a specified minimum.value, coupled with an extractables content having a specified maximum value or a centrifuge retention and a vertical absorption swell height, each having a specified minimum value and an extractables content having a specified maximum value.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: August 5, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Dentler, Rüdiger Funk, Norbert Herfert, Mariola Wanior, Friedrich Engelhardt
  • Patent number: 6569976
    Abstract: Polymer compositions derived from selected monoethylenically unsaturated (C3-C6)carboxylic acid monomers, (C1-C4)alkyl (meth)acrylate ester monomers and alkoxylated (meth)acrylate monomers used in certain weight ratios to provide enhanced detergent and cleaning performance are disclosed. Polymer compositions containing from 5 to 40% of monoethylenically unsaturated (C3-C6)carboxylic acid monomer, from 35 to 65% of (C1-C4)alkyl (meth)acrylate ester monomer and from 20 to 60% of alkoxylated (meth)acrylate monomer provide improved cleaning performance in laundry detergent formulations relative to conventional polymer compositions.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: May 27, 2003
    Assignee: Rohm and Haas Company
    Inventors: Steven Michael Baxter, Thomas Cleveland Kirk, Curtis Schwartz, Barry Weinstein
  • Patent number: 6565768
    Abstract: Water-swellable hydrophilic polymers are prepared by neutralization of the acidic hydrogel having a degree of neutralization of 0-40 mol % to an ultimate degree of neutralization of 60-85 mol % by mixing with a neutralizing agent in a mincer comprising a system of screw, rotating blade, restricted flow zone and breaker plate, wherein the mincer has a power output of from 1000 to 6000 Wh/m3 the hydrogel passes through a zone having-an energy dissipation density of from 400 to 800 W/1 of mixing volume the average residence time of the hydrogel in the mincer is from 5 to 30 seconds the breaker plate has an open area of from 20 to 40%.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: May 20, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Dentler, Norbert Herfert, Rudolf Schliwa, Uwe Stüven, Fritz Engelhardt
  • Patent number: 6476168
    Abstract: Disclosed is an emulsion useful in an inversion process. The emulsion is a water-in-oil emulsion and has an aqueous phase having a water-soluble polymer, an oil phase and an activating agent of the following formula: wherein n=0 to 10 and m=2 to 25 and the oxypropylene and oxyethylene units are of block distribution or intermixed in random or tapered distribution. Further disclosed is a process according to the following: a) providing an water-in-oil emulsion having a water-soluble polymer in the aqueous phase and the activating agent; b) introducing the emulsion into an aqueous medium and c) allowing sufficient time for the emulsion to invert. Further disclosed is another process according to the following: a) providing an water-in-oil emulsion having a water-soluble polymer in the aqueous phase; b) introducing the emulsion into an aqueous medium having the activating agent and c) allowing sufficient time for the emulsion to invert.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: November 5, 2002
    Assignee: Rhodia, Inc.
    Inventors: Manilal S. Dahanayake, Fang Li, Jean-Luc Joye
  • Patent number: 6469204
    Abstract: These compounds are represented by the formulae (Ia) and (Ib). To prepare them, in a first stage, p-xylylene dichloride is reacted with a compound (II) to produce a compound (III) and, in a second stage, the compound (III) thus obtained is reacted with a compound of formula (IVa) or (IVb), resulting in an aqueous solution of the compound (Ia) or (Ib) respectively, the water of which is removed, if appropriate.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: October 22, 2002
    Assignee: Atofina
    Inventors: Alain Riondel, Vladimir Chaplinski
  • Patent number: 6423130
    Abstract: The invention relates to phosphoric esters of the general formula I where X is 1 or 2; n is from 2 to 18; m and o are each from 2 to 100; k is from 2 to 4; R″ is H or a linear or branched alkyl radical; and R′ is an alkyl, alkaryl, alkenyl, or sulfopropyl radical, and to there use as dispersants for pigments and fillers in aqueous or organic media.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: July 23, 2002
    Assignee: Th. Goldschmidt AG
    Inventors: Tammo Boinowitz, Eberhard Esselborn, Arno Knebelkamp, Christian Psiorz, Stefan Silber, Stefan Stadtmüller, Ellen Wallhorn
  • Publication number: 20020077395
    Abstract: Aqueous emulsion polymer compositions stabilized with the reaction product of alkoxylated alcohols and an epihalohydrin or a trihaloalkanes.
    Type: Application
    Filed: November 7, 2001
    Publication date: June 20, 2002
    Inventors: Marcie Natale, Rudolph Klima, Thomas Hopkins, Michael Wiggins
  • Patent number: 6399718
    Abstract: The present invention provides a polyurethane resin obtainable by (A) in a first reaction stage (A) reacting (a) one or more di- and/or polyisocyanates, (b) one or more compounds (b) which have at least one group which ensures dispersibility in water and more than one group which is reactive toward isocyanate groups, and (c) if desired, one or more compounds having at least 2 and not more than 3 OH groups to give an intermediate (A) having free isocyanate groups and having urethane groups, (B) in a second reaction stage (B) adding (d) one or more monoisocyanates to the intermediate (A) obtained in stage (A), and (C) subsequently reacting the resulting mixture (B) with one or more hydroxyl-containing polymers (D) to give the polyurethane resin (P), using less than 20% by weight, based on the weight of the polyurethane resin (solids content), of polyalkylene oxide diols and/or polyalkylene oxide polyols to prepare the polyurethane resin.
    Type: Grant
    Filed: February 21, 2000
    Date of Patent: June 4, 2002
    Assignee: BASF Coatings AG
    Inventors: Heinz-Peter Rink, Horst Hintze-Brüning, Peter Weinert
  • Patent number: 6388038
    Abstract: The present invention provides a method for producing a cement dispersant having high percentage in water reduction rate and appropriate air-entraining property. This method for producing a polycarboxylic acid for a cement dispersant is characterized in that alkylene oxide is added at a specific temperature range.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: May 14, 2002
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Tsuyoshi Hirata, Tsutomu Yuasa, Katsuhisa Shiote, Koichiro Nagare, Syogo Iwai
  • Patent number: 6384132
    Abstract: An environmentally friendly stable aqueous optionally structured water-resistant architectural coating composition (especially a paint) containing a film-forming binder polymer composed of a starch modified by the presence of carboxylic acid or inorganic carboxylate groups and bonded (probably grafted) to chains of copolymerized mono-ethylenically unsaturated monomers (e.g. “acrylic”, “vinyl” or “styrenic” copolymers) permitting a stable aqueous dispersion of the binder polymer to be made which retains good water-resistance in the dried paint. The modified starch allows paints to be made with less dependence on materials obtained from non-renewable resources while retaining a low water-sensitivity.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: May 7, 2002
    Assignee: Imperial Chemical Industries, Plc
    Inventors: Susan Mary Horley, Stephen Arthur Wheeler
  • Patent number: 6369118
    Abstract: A biocompatible emulsifier for forming stable emulsions is disclosed. The emulsifier is particularly useful for emulsions of biological fluids, such as artificial blood, and for emulsions as drug delivery vehicles.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: April 9, 2002
    Assignee: University of Pittsburgh
    Inventor: Toby J. Chapman
  • Patent number: 6369117
    Abstract: Compositions comprising, in an aqueous phase, at least one amphiphilic polymer comprising at least one fatty chain and hydrophilic units, and at least one polyoxyalkylene, and optionally comprising a thickening system for use in particular in cosmetics.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: April 9, 2002
    Assignee: L'Oreal
    Inventors: Claude Dubief, Christine Dupuis
  • Patent number: 6362259
    Abstract: Aqueous emulsion polymer compositions stabilized with the reaction product of alkoxylated alcohols and an epihalohydrin or a trihaloalkanes.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: March 26, 2002
    Assignee: Cognis Corporation
    Inventors: Marcie Natale, Rudolph Klima, Thomas Hopkins, Michael Wiggins
  • Publication number: 20020013494
    Abstract: Compounds of the formula R2.[(AO)n.R3]m, where R2 is a residue of a group having at least m active hydrogen atoms derived from hydroxyl and/or amino and/or amido groups, AO is alkyleneoxy, n is 2 to 200; R3 includes residue(s) of alkenyl succinic acids and optionally other acids, and m is 2 to 10, but when m is 2 there are other restrictions in the definitions, are disclosed as useful thickeners and/or dispersants in aqueous systems. The use of such materials as thickeners is also disclosed.
    Type: Application
    Filed: August 25, 1999
    Publication date: January 31, 2002
    Inventors: NEIL MICHAEL CARPENTER, STEVEN JOHN ANDERSON, RICHARD ROBERT TENORE, PETER GLYNN HIBBERT
  • Patent number: 6323259
    Abstract: The present invention is directed to an acrylic resin composition obtained by adding a non-crosslinked polymer powder having a bulk density within the range from 0.1 to 0.7 g/ml, an oil absorption based on linseed oil within the range from 60 to 200 ml/100 g and a degree of swelling by methyl methacrylate of 16-fold or more as a thickening agent to acrylic syrup; and acrylic premix obtained by mixing an inorganic filler with this composition; and acrylic premix obtained by extruding constituent components by a kneading extruder to continuously form the mixture; and a method for producing an acrylic artificial marble in which these acrylic premixes are cured.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: November 27, 2001
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Yukihiro Ikegami, Seiya Koyanagi, Yuichiro Kishimoto, Yoshihito Nakahara
  • Patent number: 6310143
    Abstract: The present invention is directed to derivatized polycarboxylate dispersants for cementitious mixtures, including those mixtures with high percentages of pozzolan cement replacement and dry cast applications. In particular, the invention is directed to a cementitious mixture comprising cement, including cements with high percentages of pozzolan cement replacement, water, coarse aggregate, fine aggregate, and including a dispersant, wherein said dispersant is a derivatized polycarboxylate dispersant, or combination of polycarboxylate dispersants, which is a derivatized polymer comprising a backbone having moieties derived from (a) an unsaturated hydrocarbon; (b) at least one of a substituted carboxylic acid monomer, a substituted ethylenically unsaturated monomer, and maleic anhydride; and (c) optionally including an N-polyoxyalkylene succinimide; and wherein derivative moieties are pendant to the backbone monomer by at least one ester linkage and at least one amide linkage.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: October 30, 2001
    Assignee: MBT Holding AG
    Inventors: Thomas M. Vickers, Jr., Rainer Packe-Wirth, Jeffrey R. Bury, Jesse Osborne, Runhai Lu, John Moreau, Lynn E. Brower, Samy M. Shendy, John Pickett
  • Patent number: 6297337
    Abstract: Improved crosslinked ionic polymers or salts thereof having a soluble polymer fraction of less than about 15 wt %, and methods for making the same. The polymers are useful as bioadhesives, thickeners, emulsifiers, suspending aids, and pharmaceutical controlled release excipients.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: October 2, 2001
    Assignee: PMD Holdings Corp.
    Inventors: Nancy S. Marchant, Simon Hsaio-Pao Yu, Zahid Amjad
  • Patent number: 6265495
    Abstract: A method for the production of an esterified product is provided which affords an esterified product with high quality by repressing, during the esterification reaction of an alcohol with (meth)acrylic acid, the occurrence of impurities, particularly gel, to be formed owing to the polymerization of the alcohol and the (meth)acrylic acid as raw materials, the esterified product consequently formed, or the mixture thereof.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: July 24, 2001
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Tsuyoshi Hirata, Tsutomu Yuasa
  • Patent number: 6174963
    Abstract: Provided is a method for producing an amphoteric resin which comprises reacting (1) a copolymerizable basic prepolymer A2 which is obtained by reacting a prepolymer A1 being obtained by polymerization of an amino group-containing &agr;, &bgr;-ethylenically polymerizable compound, other &agr;, &bgr;-ethylenically polymerizable compound and a polymerization initiator containing a carboxyl group at an end, with a compound having an epoxy group represented by the following formula (I): (wherein R1 represents H or a methyl group, and R represents a straight or branched chain alkyl group of 1-10 carbon atoms) in an amount of 0.1-1.0 equivalent for the amino group equivalent of the prepolymer A1 and (2) an &agr;, &bgr;-ethylenically polymerizable acidic prepolymer B2 which is obtained by carrying out the reaction in the same manner as above with (3) other &agr;, &bgr;-ethylenically polymerizable compound C.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: January 16, 2001
    Assignee: Taisei Chemical Industries, Ltd.
    Inventors: Mitsuo Tamazawa, Yasuo Kuroda
  • Patent number: 6174950
    Abstract: Concentrated and low viscosity aqueous dispersions, e.g., opaque emulsions, well suited as flocculants for water treatment, comprise the water-soluble polymerizate of at least one water-soluble hydrophilic monomer A, optionally, at least one amphiphilic comonomer B and/or, also optionally, at least one hydrophobic comonomer C, in the presence of at least one polymeric dispersant incompatible therewith, for example an imidized and salified styrene/maleic anhydride copolymer or poly(diallyldimethylammonium chloride).
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: January 16, 2001
    Assignee: Elf Atochem S.A.
    Inventors: Denis Tembou Nzudie, Didier Vanhoye
  • Patent number: 6174980
    Abstract: The present invention provides a method for producing a cement dispersant having high percentage in water reduction-rate and appropriate air-entraining property. This method for producing a polycarboxylic acid for a cement dispersant is characterized in that alkylene oxide is added at a specific temperature range.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: January 16, 2001
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Tsuyoshi Hirata, Tsutomu Yuasa, Katsuhisa Shiote, Koichiro Nagare, Syogo Iwai
  • Patent number: 6156833
    Abstract: An improved emulsification base and a method for manufacturing same for non-aqueous chemical additives comprisesa mixture of water from 68 to 92 percent, of 2-amino-2 methyl-1 propanol from 0.1 to 0.2 percent, of an emulsifying surfactant blend from about 2.2 to 3.2 percent, of methyl esters of soybean oil from about 15-20 percent and of a 30% solution of polymer thickener from about 0.25 to 0.50 percent.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: December 5, 2000
    Assignee: PCI Group, Inc.
    Inventor: Thomas E. Rauls
  • Patent number: 6140435
    Abstract: Cross-linked copolymers possessing high thickening and suspending properties obtainable by polymerization of monomeric systems comprising a) 10-97% of at least one unsaturated carboxylic acid, b) 0-80% of at least one alkyl ester of an unsaturated acid, c) 0.5-80% of an associative monomer, d) 0-20% of an unsaturated amide, e) 0.2-20% of a suitable cross-linking agent and f) 0-20% of an unsaturated sulfonic acid; processes for their preparation, which comprise polymerization by precipitation, suspension and solution polymerizations or emulsion polymerization; latexes comprising up to 50% or more of said copolymers; said cross-linked copolymers and said latexes whenever prepared by the above polymerization processes; their use as thickening agents of aqueous, or substantially aqueous systems; and the new cross-linking agents.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: October 31, 2000
    Assignee: 3V, Inc.
    Inventor: Matteo Zanotti-Russo
  • Patent number: 6103786
    Abstract: Stable polymer dispersions with polymer particle sizes of 0.1 to 10 .mu.m are prepared by dissolving a water-in-oil emulsion, comprising a polymer dissolved in an organic solvent which is immiscible with water (organic phase) and an aqueous phase, wherein the viscosity of the organic phase is 1.0 to 20,000 mPas (measured at 25.degree. C.), the surface tension between organic and aqueous phase is 0.01 to 30 mN/m, the particle size of the water emulsified in the organic phase is 0.2 to 50 .mu.m and the ratio by volume of organic phase to aqueous phase is in the range 80:20 to 20:80, subjecting this emulsion to a shear process at a shear power of 1.times.10.sup.3 to 1.times.10.sup.8 Watts per cm.sup.3, wherein the water-in-oil emulsion is converted into an oil-in-water emulsion.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: August 15, 2000
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Hoch, Rainer Elbert, Bernd Klinksiek
  • Patent number: 6051160
    Abstract: This invention relates to a liquid composition for the control of pitch deposition in pulp and paper making comprising an aqueous solution of (1) a derivatized cationic guar, and (2) styrene maleic anhydride copolymer. The invention also relates to a process for inhibiting pitch deposition in pulp and papermaking systems and on papermaking equipment.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: April 18, 2000
    Assignee: Ashland Inc.
    Inventors: Linda M. Hlivka, George K. Wai
  • Patent number: 6051159
    Abstract: This invention relates to a preferred composition for use in preparation of flexible cold packs which are useful for medicinal, research and other uses where cooling to low temperatures is required.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: April 18, 2000
    Inventor: Jie Hao
  • Patent number: 6002049
    Abstract: Latexes are thickened by compounds of the formula ##STR1## wherein R.sup.1 is an aliphatic, substituted aliphatic, aromatic, or substituted aromatic radical having a valence of from 2 to 8; each of B.sub.1 -B.sub.8 is independently an ester, amide, amine, ether, sulfide, disulfide, thiocarbamate, urea, thiourea, urethane, sulfate, phosphate, carbonyl, methylene, thioamide, carbonate, or imide linkage; each of X.sup.1 -X.sup.8 is independently --A.sub.1 --R.sup.2 --A.sub.2 -- or --A.sub.1 -- wherein each of A.sub.1 and A.sub.2 is independently an ester, amide, amine, ether, sulfide, disulfide, urethane, thiocarbamate, urea, thiourea, sulfate, phosphate, carbonyl, methylene, thioamide, carbonate, or imide linkage and R.sup.2 is a divalent aliphatic, substituted aliphatic, aromatic, or substituted aromatic radical with the proviso that only one of B.sub.1 -B.sub.8 is urethane and that when one of B.sub.1 -B.sub.8 is urethane, one of A.sub.1 and A.sub.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: December 14, 1999
    Assignee: Henkel Corporation
    Inventors: Michael S. Wiggins, Reuben H. Grinstein, Stephen A. Fischer
  • Patent number: 5965213
    Abstract: Disclosed is an aqueous dispersion of a transparent powder coating consisting of a solid powder component and an aqueous component. The solid powder component includes at least one epoxy group-containing binder, at least one crosslinking agent, and optionally catalysts, adjuvants, or additives typical for transparent powder coatings. The binder contains 30-45% glycidyl-containing monomers and optionally vinylaromatic compounds such as styrene. The crosslinking agent is preferably a straight-chain aliphatic dicarboxylic acid and/or a carboxy-functional polyester. The aqueous component includes at least one nonionic thickener and optional materials such as catalysts, adjuvants, and/or other such materials. The nonionic thickener is preferably a nonionic associative thickener. The invention also provides a process for preparing the aqueous dispersion of the invention and a process for coating a vehicle body with the aqueous dispersion of the invention.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: October 12, 1999
    Assignee: BASF Coatings AG
    Inventors: Lawrence Sacharski, Joachim Woltering, Peter Clark, Heinrich Wonnemann
  • Patent number: 5910529
    Abstract: A water based gel guide coat composition and a method of using is provided. The composition comprises:aqueous dispersion(s) comprising a binder(s), aqueous emulsion(s) comprising a binder(s), and/or combinations thereof, having a minimum film forming temperature of 22.degree. C. or less;thickening agent of a type and in a sufficient amount to provide the composition with Bingham plastic properties upon shear;optionally additional water;water dispersible inorganic pigment(s); andoptional pH adjusting agent;the composition pH being about 6 to about 9.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: June 8, 1999
    Assignee: Minnesota Mining & Manufacturing Co.
    Inventor: Mark R. Wollner
  • Patent number: 5874495
    Abstract: Novel aqueous thickener or thixotropic polymers are prepared by the copolymerization of (A) about 15-60 weight percent of a C.sub.3 -C.sub.8 alpha, beta-ethylenically unsaturated carboxylic acid monomer, preferably acrylic or methacrylic acid or a mixture thereof with itaconic or fumaric acid, (B) about 15-80 weight percent of a nonionic copolymerizable C.sub.2 -C.sub.12 alpha, beta-ethylenically unsaturated monomer, preferably a monovinyl ester such as ethyl acrylate or a mixture thereof with styrene, acrylonitrile, vinyl chloride or vinyl acetate, and (C) about 1-30 weight percent of a new and novel nonionic ethylenically unsaturated nonionic biphillic monomer such as tristyrylpoly(ethyleneoxy).sub.x methyl acrylate, to provide a stable aqueous colloidal dispersion at an acid pH lower than about 5.0 but becoming an effective thickener for aqueous systems upon adjustment to a pH of about 5.5-10.5 or higher. These polymers adjusted to a pH of about 5.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 23, 1999
    Assignee: Rhodia Inc.
    Inventor: Fred Robinson
  • Patent number: 5849219
    Abstract: The invention relates to a stable aqueous dispersion of particles which can be flocculated by increasing the temperature to a value above the transition temperature. The invention is characterized in that the dispersion comprises a polymer selected from the group consisting of polyvinyl methyl ether and a block copolymer of polyvinyl methyl ether and a polyvinyl ether, the ether group bonded to the main chain via the oxygen atom being adsorbed onto the surface of the particles. The invention also relates to a block polymer of the above-mentioned type and to a method of manufacturing such a block copolymer. The invention enables very fine powders of ceramic particles having a very high homogeneity to be obtained.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: December 15, 1998
    Assignee: U.S. Philips Corporation
    Inventors: Antonius W. M. De Laat, Hermannus F. M. Schoo
  • Patent number: 5837272
    Abstract: A process for compatibly hydrating a fragmented solid which forms a gel with an aqueous composition, said process comprising:a. generating a first aqueous composition and a second oily composition containing the said fragmented solid;b. combining the first and second compositions in an at least the essential absence of air; andc. contacting the combined composition with a means for vibratorily mixing the combined composition, thereby causing the combined composition to be sufficiently mixed so as to hydrate the said fragmented solid to the extent that it is compatibilized into the composition and provides a stable gelled aqueous composition.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: November 17, 1998
    Assignee: Colgate Palmolive Company
    Inventors: Louis Anthony Fierro, Jr., Gregory M. Renga, Joseph Frank Stima
  • Patent number: 5833807
    Abstract: A process is disclosed for making aqueous aramid dispersion and aramid sheets of improved uniformity by utilizing water with a pH of greater than 10.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: November 10, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Seshadri Ramachandran, Ronnie Aaron Allen
  • Patent number: 5753731
    Abstract: A viscosity conditioner is disclosed which comprises a compound structured to have a group of the following formula (1) ##STR1## where R is a hydrocarbyl group, R' is a branched or secondary hydrocarbyl group, and n ranges from 1 to 500. The specified viscosity conditioner is conducive to reduced temperature dependence and hence constant viscosity in a certain range suited for all environmental conditions and good coatability at all seasons. Also disclosed are an emulsion composition and an emulsion paint composition, each of which include of the viscosity conditioner.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: May 19, 1998
    Assignee: Asahi Denka Kogyo K.K.
    Inventors: Toyotaro Yoshioka, Kaoru Komiya
  • Patent number: 5723063
    Abstract: The invention relates to composition for use in preparation of cold packs which are useful for medicine, research and other uses where cooling to a low temperature is required, said composition comprising 70-85% water, 4-10% salt, 8-15% glycerine and 2-6% polyacrylamide.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: March 3, 1998
    Inventor: Hae Jie
  • Patent number: RE39746
    Abstract: The invention relates to phosphoric esters of the general formula I where X is 1 or 2; n is from 2 to 18; m and o are each from 2 to 100; k is from 2 to 4; R? is H or a linear or branched alkyl radical; and R? is an alkyl, alkaryl, alkenyl, or sulfopropyl radical, and to there use as dispersants for pigments and fillers in aqueous or organic media.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: July 31, 2007
    Assignee: Goldschmidt GmbH
    Inventors: Tammo Boinowitz, Eberhard Esselborn, Arno Knebelkamp, Christian Psiorz, Stefan Silber, Stefan Stadtmüller, Ellen Wallhorn