The Compound Contains Repeating -(ocnh2n)- (i.e., Repeating Unsubstituted Oxyalkylene) Patents (Class 516/30)
  • Patent number: 9598725
    Abstract: System, including methods, apparatus, compositions, and kits, for making and using a stabilized emulsion. A method of generating a stabilized emulsion is provided. In the method, an aqueous phase may be provided. The aqueous phase may include an effective concentration of one or more skin-forming proteins. An emulsion may be formed. The emulsion may include droplets of a dispersed phase disposed in a continuous phase, with the aqueous phase being the continuous phase or the dispersed phase. The emulsion may be heated to create an interfacial skin between each droplet and the continuous phase, to transform the droplets into capsules.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: March 21, 2017
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Amy L. Hiddessen, Benjamin J. Hindson
  • Patent number: 8846810
    Abstract: A method for producing polymer particles, including (A) polymerizing and granulating a ring-opening polymerizable monomer in a compressive fluid with a catalyst in the presence of a surfactant, or (B) polymerizing and granulating an addition polymerizable monomer in a compressive fluid in the presence of a silicone surfactant.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: September 30, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuyuki Mase, Takeshi Sako, Idzumi Okajima, Shunsuke Mori, Keishi Mizuno, Yoshitaka Yamauchi, Taichi Nemoto, Chiaki Tanaka, Satoyuki Sekiguchi, Jyun Ishiduka
  • Patent number: 8613799
    Abstract: The present invention relates to dispersants containing at least two lipophilic groups (e.g., alkenyl-substituted acylating agent, such as, dodecyl succinic anhydride), and the dispersants contain a hydrophilic component (e.g., alkylene glycol, polyalkylene glycol) present in an amount sufficient to at least partially disperse the amphiphilic compound in aqueous media (e.g., 30 wt % to 80 wt %). The invention further provides for dispersants as phosphate, sulphonate, and phosphite derivatives thereof. The invention further provides for the use of the dispersants in tinter compositions (e.g., universal tinter) and reduced shade paints.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: December 24, 2013
    Assignee: Lubrizol Limited
    Inventors: Dean Thetford, John J. Mullay, Christopher J. Kolp, Rita A. Sweet
  • Patent number: 8252197
    Abstract: A processing agent for processing urethane elastomer fibers contains a disperse medium of a specified kind having mineral oil as its principal component and a dispersoid of a specified kind including aliphatic ester compound. The disperse medium is 80-99.99% by mass and the dispersoid is 0.01-20% by mass for a total of 100% by mass. The average particle size of the dispersoid is prepared to be in the range of 0.01-500 ?m as measured by a specified measuring method.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: August 28, 2012
    Assignee: Takemoto Yushi Kabushiki Kaisha
    Inventors: Yasunobu Arakawa, Jun Ito
  • Patent number: 8178102
    Abstract: Provided is an emulsified composition for diluting a cancer antigen peptide or a dimer thereof. Also provided is a novel cancer vaccine composition or specific CTL inducer that efficiently induces CTL irrespective of the type of cancer antigen peptide when mixing the emulsified composition for dilution and a water phase comprising a cancer antigen peptide or a dimer thereof. The present invention relates to an emulsified composition for diluting a cancer antigen peptide or a dimer thereof, comprising a particular ester, a particular surfactant, a particular emulsifier, and a water phase. The present invention also relates to a cancer vaccine composition or specific CTL inducer obtained by freshly diluting and mixing a water phase comprising a cancer antigen peptide or a dimer thereof with the emulsified composition for dilution.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: May 15, 2012
    Assignees: Dainippon Sumitomo Pharma Co., Ltd., NOF Corporation
    Inventors: Koichi Saito, Yusuke Okawa
  • Patent number: 8048829
    Abstract: Fluids and associated methods useful in subterranean applications are provided. Compositions are provided that may be useful in subterranean applications for addressing, among other things, drill string sticking problems. More particularly, spotting fluid compositions are provided having a water insoluble external phase fluid; a water soluble internal phase fluid; and an ether carboxylic acid emulsifying agent. Additional optional components may be used, such as viscosifiers, weighting agents, and wetting agents.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: November 1, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventor: Jay P. Deville
  • Patent number: 8048828
    Abstract: Fluids and associated methods useful in subterranean applications are provided. More particularly, methods of reducing drill string sticking are provided, which include: providing a spotting fluid composition comprising a water insoluble external phase fluid, a water soluble internal phase fluid, and an ether carboxylic acid emulsifying agent; introducing the spotting fluid to the vicinity of a desired portion of a drill string; and allowing the spotting fluid to interact with a portion of material surrounding the desired portion of the drill string spotting fluid. Compositions are provided that may be useful in subterranean applications for addressing, among other things, drill string sticking problems. Additional optional components may be used, such as viscosifiers, weighting agents, and wetting agents.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: November 1, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventor: Jay P. Deville
  • Patent number: 7932220
    Abstract: A composition for use in an oil chamber of a tool includes a hydraulic oil; and a surfactant, wherein the surfactant is present at an amount sufficient to form micelles in the hydraulic oil. The composition may further include an amphiphilic copolymer. A method includes providing a hydraulic fluid composition comprising a hydraulic oil and a surfactant capable of forming micelles in the hydraulic oil; and filling a hydraulic chamber in the tool with the hydraulic fluid composition. The hydraulic fluid composition may further include an amphiphilic copolymer.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: April 26, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Alexander Zazovsky, Jian Zhou, Christopher Del Campo, Golchehreh Salamat, Diankui Fu, Jese C. Lee
  • Patent number: 7834098
    Abstract: The invention relates to new compositions having good binder, wetting, and dispersing properties for virtually foam-free aqueous and also solventborne and solvent-free pigment preparations.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: November 16, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Andreas Wenning, Dietmar Loest
  • Patent number: 7662753
    Abstract: The present invention relates to compositions for treating subterranean formations. A treatment fluid that comprises an aqueous liquid, and a degradable surfactant derived from a degradable polymer is provided. Also provided are emulsified treatment fluids and foamed treatment fluids that comprise degradable surfactants derived from degradable polymers.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: February 16, 2010
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Rajesh K. Saini
  • Patent number: 7652072
    Abstract: Compositions comprising an asymmetric disiloxane surfactant composition comprising a silicone composition comprising a silicone having the formula: MM? where M or M? comprises an alkylpolyalkyleneoxide bearing substituent selected from the group consisting of: R13(C2H4O)a(C3H6O)b(C4H8O)cR14 and R12SiR5R6(R13(C2H4O)a(C3H6O)b(C4H8O)cR14) that exhibit resistance to hydrolysis over a wide pH range.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: January 26, 2010
    Assignee: Momentive Performance Materials Inc.
    Inventors: Mark D. Leatherman, George A. Policello, Suresh K. Rajaraman
  • Patent number: 7608567
    Abstract: The present invention relates to methods for treating subterranean formations. A method, that comprises providing a treatment fluid that comprises an aqueous fluid, and a degradable surfactant derived from a degradable polymer; and introducing the treatment fluid into a well bore that penetrates the subterranean formation, is provided.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: October 27, 2009
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Rajesh K. Saini
  • Patent number: 7553878
    Abstract: The present invention provides a feedstock composition for increasing the efficiency of atomization in hydrocarbon processing that includes a water-in-hydrocarbon oil emulsion including a non-ionic surfactant capable of stabilizing the emulsion and having a hydrophilic-lipophilic balance of greater than about 12. The emulsion includes water droplets of about 5 to about 10 microns in diameter, the droplets being dispersed substantially uniformly in the hydrocarbon oil phase. These surfactants are capable of stabilizing the water-in-hydrocarbon oil emulsion under relevant temperature and pressure conditions for hydrocarbon processing. The inventive feedstock composition provides a metastable water-in-oil emulsion where expanding water vapor explodes under spray conditions where the system pressure is released, demolishing a larger oil droplet and producing smaller oil droplets.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: June 30, 2009
    Assignee: General Electric Company
    Inventors: Wiley L. Parker, Collin W. Cross, Alan E. Goliaszewski
  • Patent number: 7501470
    Abstract: The invention relates to the use, in emulsion polymerization, of at least a compound derived from a terpene and comprising a number of oxypropylene units ranging between 0 to 20, and a number of oxyethylene units ranging between 2 to 80.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: March 10, 2009
    Assignee: Rhodia Inc.
    Inventors: Herve Adam, Jon D. Kiplinger, Robert J. Tillotson, Jean-Luc Joye, Hui Shirley Yang
  • Patent number: 7419938
    Abstract: A method of treating a subterranean formation, the method comprising: (A) injecting down a well bore into the formation an admixture of (a) an emulsion having an internal aqueous phase comprising a water-soluble oil or gas field chemical or an aqueous dispersion of a water-dispersible oil or gas field chemical and an external oil phase comprising a liquid hydrocarbon and an oil-soluble surfactant and (b) a demulsifier comprising a solution of a surfactant having a cloud point temperature of above 40° C.; or (B) separately injecting down a well bore into the formation emulsion (a) and demulsifier (b) and generating an admixture of emulsion (a) and demulsifier (b) within the formation.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: September 2, 2008
    Assignee: BP Exploration Operating Company Limited
    Inventor: Ian Ralph Collins
  • Patent number: 7417010
    Abstract: A method of treating a subterranean formation, the method comprising: (A) injecting down a well bore into the formation an admixture of (a) an emulsion having an internal aqueous phase comprising a water-soluble oil or gas field chemical or an aqueous dispersion of a water-dispersible oil or gas field chemical and an external oil phase comprising a liquid hydrocarbon and an oil-soluble surfactant and (b) a demulsifier comprising a solution of a surfactant having a cloud point temperature of above 40° C.; or (B) separately injecting down a well bore into the formation emulsion (a) and demulsifier (b) and generating an admixture of emulsion (a) and demulsifier (b) within the formation.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: August 26, 2008
    Assignee: BP Exploration Operating Company Limited
    Inventor: Ian Ralph Collins
  • Patent number: 7182797
    Abstract: Improved fuel compositions and fuel additive packages are disclosed which serve to increase the combustion efficiency of conventional fuels while reducing the level of CO2 emissions generated upon the combustion of the fuels. The fuels may be essentially water-free hydrocarbon fuels such as gasoline or diesel fuel, or may be in the form of hydrosols. The additive packages of the invention include sorbitan oleate, a polyoxyethylene alcohol, an alkylene glycol, and an amine.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: February 27, 2007
    Inventor: Kenneth Mekonen
  • Patent number: 7041145
    Abstract: Fuel made from an emulsion between water and a liquid hydrocarbon and polymeric surfactant, used to stabilize the emulsion, obtainable by (a) reacting (i) at least one polyolefin oligomer functionalized with at least one group deriving from a dicarboxylic acid, or a derivative thereof; and (ii) at least one polyoxylalkylene having linear oxyalkylene units, the polyoxyalkylene being linked to a long-chain alkyl group optionally containing at least one ethylenic unsaturation; and (b) reacting the product of step (a) with (ii) at least one nitrogen compound selected from monoamines, polyamines and quaternary ammonium hydroxides. The fuel has high stability over time, without forming carbonaceous deposits adhering to metal surfaces.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: May 9, 2006
    Assignee: CAM Technologie S.p.A.
    Inventors: Tiziano Ambrosini, Attilio Citterio, Alberto De Amicis, Guido Rivolta
  • Patent number: 6821934
    Abstract: Water-in-oil emulsions (a) with a viscosity of at most 5000 mPa.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: November 23, 2004
    Assignee: Beiersdorf AG
    Inventors: Andreas Bleckmann, Rainer Kröpke, Günther Schneider
  • Patent number: 6649577
    Abstract: Water-in-oil emulsions (a) with a viscosity of at most 5000 mPa·s (b) with a content of water and water-soluble substances totalling at least 75% by weight, and with a content of lipids, emulsifiers and lipophilic constituents totalling at most 15%, based in each case on the total weight of the preparations, (c) the oil phase of which comprises at least 75% of one or more substances chosen from the group of nonpolar lipids which are liquid at room temperature and have a polarity of greater than 30 mN/m, and/or silicones of any polarity this weight proportion being based on the total weight of the oil phase, (d) comprising at least one interface-active substance chosen from the group of substances of the general formula (I)
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: November 18, 2003
    Assignee: Beiersdorf AG
    Inventors: Andreas Bleckmann, Rainer Kröpke, Günther Schneider
  • Patent number: 6610751
    Abstract: The present invention relates to specific compositions made by alkoxylation of crude guerbet alcohol mixtures that contain between 15% and 50% lower molecular weight alkoxylated alcohols. The lower molecular weight alcohols are the raw material alcohols used to make the guerbet. Compositions containing this specific bi-modal distribution have unique emulsification properties.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: August 26, 2003
    Inventors: Anthony J. O'Lenick, Jr., Michael Heath, Bobby Viteaux
  • Patent number: 6552090
    Abstract: Described are compositions comprising perfluoroalkyl haloalkyl ethers and, optionally, surfactant; uses for perfluoroalkyl haloalkyl ether compounds and compositions thereof, optionally comprising surfactant; and perfluoroalkyl haloalkyl ethers.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: April 22, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Frederick E. Behr, Richard M. Flynn
  • Patent number: 6552091
    Abstract: The invention relates to block-copolymeric polyalkylene oxides containing styrene oxide, obtained by alkoxylation, and their use as low-foam pigment wetting agents in aqueous pigment pastes with or without cosolvent and in aqueous and low-solvent coating materials and printing inks.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: April 22, 2003
    Assignee: Goldschmidt AG
    Inventors: Tammo Boinowitz, Ellen Reuter, Stefan Silber, Joachim Venzmer
  • 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: 6452038
    Abstract: The present invention provides a compound according to the formula: CH2═C(R1)—C(O)—R6—NHCO2(CH2)p(CF2)q—O—((CF2)aCFXO)m(CF2)r—Z wherein each R1 is independently selected from —H, —CH3, —F and —Cl, wherein each R6 is independently selected from substituted or unsubstituted C1-C10 alkyl, cyclic alkyl, or aryl groups, wherein each a is independently selected from 0-3, wherein each X is independently selected from —F, —CF3 or —CF2CF3, wherein each p is independently selected from 1-4, each q is independently selected from 1-5, each r is independently selected from 1-5, each m is independently selected from 1-50, each Z is independently selected from —F and —(CH2)sOH, and each s is independently selected from 1-4. The present invention also provides for the use of this compound as a surfactant in highly fluorinated liquid solvents. Latexes of dispersed particles utilizing this surfactant are provided.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: September 17, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Prabhakara Satyauolu Rao, Naiyong Jing
  • Patent number: 6420323
    Abstract: A low-foam emulsifier system is presented containing (a) an ethoxylate/propoxylate of one or more C8-C18 fatty alcohols, where the ethoxylate/propoxylate contains 2 to 6 ethylene oxide units and 4 to 8 propylene oxide units, with (b) a fatty alcohol propoxylate or distillation residue of fatty alcohol or fatty alcohol propoxylate, where the fatty alcohol contains 12 to 24 carbon atoms and up to three propylene oxide units. The weight ratio of (a) to (b) is from 1:0.3 to 0.3:1. The emulsifier system produces a low amount of foam, and is useful in industrial metal processing applications such as cleaning, corrosion protection or cooling lubricant emulsions.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: July 16, 2002
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Juergen Geke, Horst-Dieter Speckmann, Bernd Stedry
  • Patent number: 6391326
    Abstract: The invention concerns stable emulsions, a method for preparing said emulsions and the elastomer films containing them. Said stable emulsions of at least one chemical substance x in an elastomer solution, to be used for preparing an elastomer film, comprise (1) a phase A containing an elastomer dissolved in an organic apolar or slightly polar solvent a, wherein is dispersed (2) a phase B containing at least said chemical substance x, in solution or dispersed in a polar solvent b, non-miscible with phase A and (3) at least a dispersing agent selected from the group consisting of block or grafted polymers.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: May 21, 2002
    Assignee: Hutchinson
    Inventors: Colette Crepeau, Pierre Hoerner, Gérard Riess
  • Patent number: 6348541
    Abstract: A process for preparing a water-in-oil emulsion of a water-soluble polymer is disclosed, comprising polymerizing at least one water-soluble vinyl monomer in a water-in-oil emulsion, wherein the dissolved oxygen concentration of the emulsion under polymerization is about 100 ppb or less. The desired emulsion can be obtained without being accompanied by the formation of agglomerates.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: February 19, 2002
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Shoichi Kanda, Takeshi Narita, Masahiro Ushigome, Masaharu Nagahama
  • Publication number: 20010056046
    Abstract: Low-foam emulsifier system consisting of:
    Type: Application
    Filed: July 27, 1999
    Publication date: December 27, 2001
    Inventors: JUERGEN GEKE, HORST-DIETER SPECKMANN, BERND STEDRY
  • Patent number: 6176243
    Abstract: A non-hazardous, non-flammable, biodegradable composition for use in removal of paraffin accumulations in oilfield equipment may contain limonene, a glycol ether an ethoxylate(alcohol surfactant, an aliphatic alcohol having 1 to 4 carbon atoms or mixtures thereof, a non-hazardous and biodegradable organic acid, and, sufficient water as a carrier and comprising such a major weight component of the composition as to virtually eliminate a measurable flashpoint therefor. Preferably the aliphatic alcohol is one or methanol, ethanol, or admixtures thereof. Preferably the organic acid is one of acetic acid, citric acid, or formic acid. The glycol either is preferably ethylene glycol monopropyl ether.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: January 23, 2001
    Inventor: Joe A. Blunk
  • Patent number: 6153657
    Abstract: An organic solvent-less O/W type emulsion having an excellent stability for storage and water-dilution is produced by a specific process in which (1) a mixture of (a) water with (b) an oily substance selected from oily effective materials and oily liquid materials, the oily substance and water being capable of forming an interface therebetween, (c) a high molecular weight surfactant and (d) a low molecular weight surfactant is stirred at a temperature of 40.degree. C. or less, to provide an O/W type emulsion; (2) the emulsion is heated to gel the emulsion; (3) the gel is heated to phase invert from O/W to W/O; (4) the W/O emulsion is cooled to a temperature below the gelling temperature; and (5) the resultant O/W emulsion is further stirred, and optionally in or after the cooling step (4), a particulate solid substance or an aqueous suspension thereof is mixed with the emulsion.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: November 28, 2000
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Atsushi Kisuno, Tatsuo Ansai, Shihoko Aizawa
  • Patent number: 6127430
    Abstract: The invention provides a microemulsion that comprises from 0.1 to 99.0 parts by weight hydrofluoroether, from 1.0 to 99.9 parts by weight water, the sum of the parts of hydrofluoroether and water being 100 parts, and fluorinated surfactant. The microemulsions of the invention preferably contain a mixture of fluorinated surfactants and may also contain a non-fluorinated surfactant. The microemulsions of the invention may also further contain cosurfactant and/or cosolvent.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: October 3, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Jimmie R. Baran, Jr., Mark J. Pellerite
  • Patent number: 6090754
    Abstract: Surfactant compositions for wellbore operations consisting essentially of a first surfactant selected from the group consisting of alkyl polyglycosides containing alkyl groups containing an odd number of carbon atoms from about 9 to about 13 carbon atoms and a second surfactant selected from the group consisting of alkyl polyglycosides containing alkyl groups containing from about 12 to about 18 carbon atoms and a third surfactant selected from the group consisting of linear ethoxylated alcohols containing from about 8 to 12 carbon atoms and from about 2 to about 8 ethylene oxide groups and a method for formulating such surfactant compositions.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: July 18, 2000
    Assignee: Atlantic Richfield Company
    Inventors: Albert F. Chan, Kieu T. Ly
  • Patent number: 6069173
    Abstract: Insecticidal compositions comprising a synthetic surfactant and capsaicin or other capsaicinoid exhibit synergistic effects against numerous insects, not only as to activity-enhancement effect but more importantly as to activity-extending effect, especially against Fall Army Worms, Alfalfa Weevils, Corn Ear Worms, Corn Leaf Aphids, True Army Worms, Grasshoppers, Potato Leaf Hoppers, Beanleaf Beetles, and Soybean Thrips, when applied to the insect or its habitat, especially as an aqueous solution, suspension, or emulsion. Effective kill levels are observed as long as fourteen days after application whereas, using the individual components, effective kill levels do not ordinarily extend beyond 24 hours after application.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: May 30, 2000
    Assignee: Kalamzoo Holdings, Inc.
    Inventor: Gary C. Hainrihar
  • Patent number: 5976200
    Abstract: A combustible fuel for diesel engines and a process for forming same in the form of a water in hydrocarbon emulsion wherein the mean water drop diameter is.ltoreq.4 .mu.m with a maximum diameter of.ltoreq.10 .mu.m.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: November 2, 1999
    Assignee: Intevep, S.A.
    Inventors: Hercilio Rivas, Gustavo A. Nunez, Tulio Colmenares, Manuel Chirinos
  • Patent number: 5942468
    Abstract: Disclosed are invert oil emulsion drilling fluids in which the internal aqueous phase contains one or more water soluble polyethylene glycols dissolved therein. The fluids are characterized by an elevated low shear rate viscosity, hence excellent suspension properties, an elevated Shear Thinning Index, hence excellent drilling characteristics, and a high shale stability index, hence excellent cuttings stabilization and formation protection. Preferred polyethyleneglycols have a molecular weight from about 500 to about 10,000, preferably from about 1000 to about 10,000. Preferred fluids contain from about 5% to about 40% by weight of the polyethyleneglycol in the aqueous phase, most preferably from about 10% to about 30% by weight. Also disclosed is a method of enhancing the thermal stability of invert emulsion well drilling and servicing fluids which comprises dissolving in the aqueous phase thereof one or more polyethyleneglycols.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: August 24, 1999
    Assignee: Texas United Chemical Company, LLC
    Inventors: James W. Dobson, Jr., James P. Cashion, William Max Duncan
  • Patent number: RE36983
    Abstract: Methods and compositions are provided to facilitate the transportation and combustion of highly viscous hydrocarbons by forming reduced viscosity hydrocarbon-in-water emulsions, and in particular, bioemulsifier-stabilized hydrocarbon-in-water emulsions.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: December 12, 2000
    Assignee: Petroferm Inc.
    Inventors: Michael E. Hayes, Kevin R. Hrebenar, Patricia L. Murphy, Laurence E. Futch, Jr., James F. Deal, III, Paul L. Bolden, Jr.