Hydroperoxide Patents (Class 526/230)
  • Patent number: 8951637
    Abstract: The present invention provides a method for producing water-absorbent resin particles which show an excellent water absorption rate and high equilibrium swelling capacity and which have an appropriate particle size to be excellent in handleability, and water-absorbent resin particles obtained by the method.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: February 10, 2015
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Atsushi Heguri, Kenji Tanimura, Yuichi Onoda
  • Patent number: 8900707
    Abstract: The present invention provides a method for producing water-absorbent resin particles which show an excellent water absorption rate and high equilibrium swelling capacity and which have an appropriate particle size to be excellent in handleability, and water-absorbent resin particles obtained by the method.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: December 2, 2014
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Atsushi Heguri, Kenji Tanimura, Yuichi Onoda
  • Publication number: 20140058052
    Abstract: The invention pertains to a process for manufacturing a fluoroelastomer [fluoroelastomer (A)] having a heat of fusion of less than 5 J/g as measured by ASTM D-3418-08, said method comprising emulsion polymerizing vinylidene fluoride (VDF) in the presence of at least one additional fluorinated monomer, in an aqueous polymerization medium, said method comprising polymerizing VDF and said additional fluorinated monomer(s) in the presence of a redox radical initiator system comprising: —at least one organic oxidizing agent [agent (O)]; —at least one organic reducing agent [agent (R)]; wherein agent (O) is fed to said polymerization medium separately from agent (R), so that agent (O) comes in contact with agent (R) exclusively in said polymerization medium comprising VDF and optional additional monomer(s), to fluoroelastomers having low amount of chain defects and low amount of polar end groups, notably obtainable from said process, and to curable compositions therefrom.
    Type: Application
    Filed: May 2, 2012
    Publication date: February 27, 2014
    Applicant: Solvay Specialty Polymers Italy S.p.A.
    Inventors: Liubov Chernysheva, Bradley Lane Kent, Giovanni Comino, Valeriy Kapelyushko
  • Publication number: 20130289214
    Abstract: The present invention relates to a method for preparing a polymer based on N-vinyl lactam monomer units, which comprises a step (E) for controlled radical polymerization of a composition comprising: monomers containing (and most often consisting of) N-vinyl lactam monomers, either identical or different (and generally identical); an agent for controlling the radical polymerization, for example comprising a thiocarbonylthio group —S(C?S)—; and a radical polymerization initiator which is a redox system comprising a reducing agent (Red) and an oxidizing agent (Ox).
    Type: Application
    Filed: September 22, 2011
    Publication date: October 31, 2013
    Applicants: Centre National De La Recherche Scientifique (C.N.R.S.), Rhodia Operations
    Inventors: Mathias Destarac, Aymeric Guinaudeau, Stéphane Mazieres, James Wilson
  • Publication number: 20130174986
    Abstract: Provided is a method for disassembling a bonded body, whereby the bonded body can be easily disassembled and peeled. The method for disassembling a bonded body formed by bonding substrates with an adhesive comprises irradiating light having a wavelength of 280 nm or more such that irradiation energy is 1000-5000000 mJ/cm2 at a wavelength of 365 nm while heating the bonded body to 150° C.-300° C.
    Type: Application
    Filed: August 29, 2011
    Publication date: July 11, 2013
    Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Hiroyuki Kurimura, Isamu Ichikawa, Yoshitsugu Goto
  • Patent number: 8481659
    Abstract: The present invention relates to cure accelerators useful for anaerobic curable compositions, such as adhesives and sealants.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: July 9, 2013
    Assignees: Henkel Corporation, Henkel Ireland Ltd.
    Inventors: David P. Birkett, Martin Wyer, Andrew Messana, Philip Klemarczyk, Anthony F. Jacobine
  • Patent number: 8455591
    Abstract: A polyol composition comprising a polyol (a) and resin fine particles (b) dispersed in the polyol (a), and a method for producing the polyol composition are provided, wherein the resin fine particles (b) are particles such that an arithmetic standard deviation by volume of a particle size distribution of the particles, derived from respective values in 85 divisions of a range of 0.020 to 2000 ?m determined by a laser diffraction/scattering particle size distribution analyzer, is not more than 0.6. A resin fine particle-dispersed polyol composition that, even if the resin particles dispersed in the polyol have a small particle diameter, allows the production of a polyurethane resin having an excellent mechanical strength such as elongation at break, and a method for producing the same, are provided.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: June 4, 2013
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Shigekuni Nakada, Hiroyuki Watanabe, Takayuki Tsuji, Hiroki Mori
  • Patent number: 8362166
    Abstract: The object of the present invention is to provide a process for producing high-quality polymer microparticles having uniform particle size of the order of several micrometers to tens of micrometers by inverse suspension polymerization at high productivity while keeping excellent dispersion stability without causing aggregation among particles. The process is one for the production of polymer microparticles by inverse polymerization of a vinyl monomer and is characterized in that an oil-soluble oxidizing agent and a water-soluble reducing agent are used as a polymerization initiator and the oil-soluble oxidizing agent is fed after the water-soluble reducing agent is fed.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: January 29, 2013
    Assignee: Taogosei Co., Ltd.
    Inventors: Akihiro Gotou, Hideo Matsuzaki, Shinji Hibino
  • Patent number: 8362165
    Abstract: The object of the present invention is to provide a process for producing a high-quality polymer microparticle having uniform particle size of the order of several micrometers to tens of micrometers by inverse suspension polymerization at high productivity while keeping excellent dispersion stability without causing aggregation among particles. The process is one for the production of polymer microparticles by inverse polymerization of a vinyl monomer and is characterized in that the inverse suspension polymerization is conducted dividing at least two steps, an oil-soluble oxidizing agent and a water-soluble reducing agent are used as a polymerization initiator, and the oil-soluble oxidizing agent is fed after the water-soluble reducing agent is fed.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: January 29, 2013
    Assignee: Toagosei Co., Ltd.
    Inventors: Akihiro Gotou, Hideo Matsuzaki
  • Publication number: 20120302657
    Abstract: Composition which contains polymerizable binder and an initiator according to the following Formula I: R1—X—O—O—[Y—O—O—-]nR2??(Formula I) and having a large through-curing depth and a sufficiently long processing time and which cures without the development of high temperatures.
    Type: Application
    Filed: November 14, 2011
    Publication date: November 29, 2012
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Norbert MOSZNER, Ulrich SALZ, Peter BURTSCHER, Robert LISKA, Astrid GUGG, Christian GORSCHE
  • Publication number: 20120157647
    Abstract: A rubber-modified polymeric composition having predominately core-shell morphology is disclosed. The rubber-modified polymeric composition can be a polystyrene comprising styrene, polybutadiene, and a high-grafting initiator formed by contacting singlet oxygen with an olefin containing an allylic hydrogen or a diene to form a hydroperoxide or peroxide. The singlet oxygen can be formed by contacting ground state oxygen with a photo catalyst, such a photosensitive dye exposed to light.
    Type: Application
    Filed: February 15, 2012
    Publication date: June 21, 2012
    Applicant: Fina Technology, Inc.
    Inventor: Olga Khabashesku
  • Publication number: 20110021712
    Abstract: The object of the present invention is to provide a process for producing a high-quality polymer microparticle having uniform particle size of the order of several micrometers to tens of micrometers by inverse suspension polymerization at high productivity while keeping excellent dispersion stability without causing aggregation among particles. The process is one for the production of polymer microparticles by inverse polymerization of a vinyl monomer and is characterized in that the inverse suspension polymerization is conducted dividing at least two steps, an oil-soluble oxidizing agent and a water-soluble reducing agent are used as a polymerization initiator, and the oil-soluble oxidizing agent is fed after the water-soluble reducing agent is fed.
    Type: Application
    Filed: January 20, 2009
    Publication date: January 27, 2011
    Applicant: Toagosei Co., Ltd.
    Inventors: Akihiro Gotou, Hideo Matsuzaki
  • Publication number: 20100159767
    Abstract: Processes and products utilizing (meth)acrylic esters of poly(trimethylene ether) glycol are provided. Products that can be made include ceramic materials, personal care products, inks, coatings, fabrics, and other articles that can be made from reaction products of (meth)acrylic ester of poly(trimethylene ether) glycol with certain monomers.
    Type: Application
    Filed: October 28, 2009
    Publication date: June 24, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Gyorgyi Fenyvesi, Raja Hari Poladi, Hari Babu Sunkara
  • Patent number: 7709559
    Abstract: The present invention relates to new cure accelerators for anaerobic curable compositions. These anaerobic cure accelerators are generally sulfonimide derivatives and sulfonamide derivatives.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: May 4, 2010
    Assignee: Henkel Corporation
    Inventor: Andrew D. Messana
  • Patent number: 7691953
    Abstract: A method is disclosed for producing polyvinyl chloride which includes mixing a vinyl chloride solution with an initiator solution in at least one high shear mixing device comprising at least one rotor/stator set producing a rotor tip speed of at least 5.1 m/sec (1000 ft/min), to form a polymerization mixture; and allowing the mixture to polymerize by free radical polymerization to form polyvinyl chloride. The polymerization mixture may be subjected to free radical polymerization conditions comprising a temperature in the range of about 20° C. to about 230° C. In some embodiments, the high shear mixing device produces a shear rate of at least 20,000 s?1. A system for carrying out the method is also disclosed.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: April 6, 2010
    Assignee: H R D Corporation
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Patent number: 7645846
    Abstract: There is provided a process for the preparation of a polymerizable composition comprising a cross-linker and a polymerizable monomer of formula (I) comprising (i) contacting a compound of formula (II) with an acid such as an imobilized acid; and (ii) neutralizing product of (i) such that a crosslinker is formed.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: January 12, 2010
    Assignee: CooperVision International Holding Company LP
    Inventors: Barry Charles Holdstock, Trevor Owen Glasey
  • Publication number: 20090318582
    Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution, where the monomer solution comprises at least two initiators, one of the initiators is a peroxide with the exception of persulfate, and the molar ratio of peroxide to further initiator is at least 1:8, the water-absorbing polymer particles themselves, and hygiene articles comprising these water-absorbing polymer particles.
    Type: Application
    Filed: July 12, 2007
    Publication date: December 24, 2009
    Applicant: BASF SE a German Corporation
    Inventors: Dennis Loesch, Volker Seidl, Matthias Weismantel
  • Publication number: 20090310285
    Abstract: The invention relates to a process for preparing polythiophene dispersions or for in situ deposition of polythiophenes. The dispersion is prepared by oxidative polymerizing of a thiophene or thiophene derivative, wherein an oxidizing agent is used and is at least one organic peroxidic compound excluding diacyl peroxide. The invention also relates to the use of specific organic peroxides as oxidizing agents in the oxidative polymerization of thiophenes. The invention further relates to a process to process a conductive layer and the use of the conductive layer.
    Type: Application
    Filed: September 19, 2007
    Publication date: December 17, 2009
    Applicant: H.C. Starck GmbH
    Inventors: Knud Reuter, Stephen Kirchmeyer, Udo Merker, Peter Wilfried Loevenich, Timo Meyer-Friedrichsen
  • Publication number: 20090131549
    Abstract: A process for preparing polyvinylpyrrolidones by free-radically initiated polymerization in the presence of an initiator found, which comprises performing the polymerization as a spray or droplet polymerization.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 21, 2009
    Applicant: BASF SE
    Inventors: Dennis Losch, Ralf Widmaier, Volker Seidl, Hans-Ulrich Moritz, Karim Asif, Silke Biedasek
  • Publication number: 20090039018
    Abstract: Compositions comprising a cross-linked isocyanurate homopolymer or other cross-linked triazine homopolymers in the form of a microbead that is porous or non-porous; methods of making; and methods of using the compositions are disclosed.
    Type: Application
    Filed: August 8, 2008
    Publication date: February 12, 2009
    Inventors: Howard C. Jordi, Mark A. Jordi
  • Patent number: 7446074
    Abstract: The invention relates to highly concentrated aqueous emulsions of peroxides comprising an anti-freeze agent, a polyvinyl acetate with a degree of hydrolysis between 45 and 80%, and optionally a non-ionic surfactant with an HLB value greater than 10 selected from alkylene oxide block-copolymers, ethoxylated fatty alcohols, and ethoxyfated fatty acids. The emulsions have a low COD value and are safe, storage stable, and generally applicable.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: November 4, 2008
    Assignee: Akzo Nobel N.V.
    Inventors: Johannes Jacobus Theodorus De Jong, Boen Ho O, Hans Westmijze
  • Patent number: 7411009
    Abstract: The present invention relates to new cure accelerators for anaerobic curable compositions. These anaerobic cure accelerators are generally sulfonimide derivatives and sulfonamide derivatives.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: August 12, 2008
    Assignee: Henkel Corporation
    Inventors: Andrew D. Messana, Philip T. Klemarczyk, Karen R. Brantl
  • Patent number: 7411025
    Abstract: The present invention relates to phenylgycines and derivatives thereof, 1,4-aminobenzoyl compounds, and phenyl pyrazolinones as cure accelerators for anaerobically curable compositions.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: August 12, 2008
    Assignee: Henkel Corporation
    Inventors: Andrew D. Messana, Philip T. Klemarczyk, Karen R. Brantl
  • Publication number: 20080171842
    Abstract: A method of modifying a polyethylene is disclosed. In the method ethylene or a mixture of ethylene and a C3-C10 ?-olefin is polymerized in an organic solvent with a Ziegler or single-site catalyst to form an initial polyethylene solution. The initial polyethylene solution is then reacted with a free radical initiator to produce a modified polyethylene. The modified polymer has an enhanced melt elasticity and increased long chain branching index, and is essentially free of gel.
    Type: Application
    Filed: January 11, 2007
    Publication date: July 17, 2008
    Inventors: Andrew J. Scheie, Mark K. Reinking
  • Patent number: 7375174
    Abstract: An acrylic composition includes the reaction product of an acrylic polymer, a carboxylic acid compound, and an alkyl carbamate. The acrylic polymer includes the reaction product of a functionalized monomer, a first compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer and epoxy functionality. The carboxylic acid compound has carboxylic acid functionality that is reactive with the acrylic polymer. The alkyl carbamate is reactive with the hydroxyl-functional acrylic polymer to form the acrylic composition. The acrylic composition is highly-branched and, when used in coating compositions in combination with a suitable cross-linking agent, enhances recoat adhesion and produces cured films that have optimum scratch, mar, and chip performance, and acid etch resistance.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: May 20, 2008
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Marvin L. Green
  • Patent number: 7371782
    Abstract: This invention relates to a polymerizable composite material and method of making same including at least one multifunctional acid containing monomer having a concentration ranging from about 10% to about 85%, a non-reactive filler having a concentration ranging from about 1% to about 80%, a polymerization system having a concentration ranging from about 1.5% to about 15%, and water having a concentration ranging from about 0.1% to about 25%.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: May 13, 2008
    Assignee: Pulpdent Corporation
    Inventors: Jan G. Stannard, Kenneth J. Berk
  • Patent number: 7312290
    Abstract: Curable formulations comprising: (a) at least one multifunctional acrylate having a functionality of at least two, (b) at least one mono-acrylate monomer, (c) at least one heteroatom-containing diacrylate, wherein the heteroatom is sulfur or selenium; and (d) a curing agent, have been discovered. The curable formulations show promise as precursors to high refractive index materials suitable for use in light management devices and other optical devices. In addition the novel curable formulations are useful for producing coatings, which may be useful in forming display films, in particular brightness enhancing display films.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: December 25, 2007
    Assignee: General Electric Company
    Inventors: Bret Ja Chisholm, James Edward Pickett
  • Patent number: 7304114
    Abstract: Liquid rubbers that are ordinarily immiscible in liquid thermoset resins can be made miscible by the addition of at least one non-functional aromatic end-group to the polymer chains of such liquid rubber compositions. Such addition may be initiated by high-temperature peroxides in non-functional aromatic solvents. The liquid rubbers are found to improve the fracture toughness of cured thermoset resins while maintaining dimensional and heat resistance.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: December 4, 2007
    Assignee: Rohm and Haas Company
    Inventor: Edward Ewart LaFleur
  • Patent number: 7275932
    Abstract: A two-part self-curing endodontic sealing system comprises a thiourea derivative, such as acetyl thiourea, and a hydroperoxide, such as cumene hydroperoxide. The thiourea derivative is used as a reducing agent and the hydroperoxide is used as an oxidizing agent.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: October 2, 2007
    Assignee: Pentron Clinical Technologies, LLC
    Inventors: Shuhua Jin, Weitao Jia
  • Patent number: 7250480
    Abstract: An acrylic composition includes the reaction product of an acrylic polymer, a carbamate having anhydride-reactive functionality and carbamate functionality, and a carboxylic acid anhydride that is reactive with the carbamate to form a carboxylic acid carbamate. The acrylic polymer includes the reaction product of a functionalized monomer, a first compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer and epoxy functionality. The carboxylic acid carbamate has the carbamate functionality and carboxylic acid functionality that is reactive with the acrylic polymer.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: July 31, 2007
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Marvin L. Green
  • Patent number: 7220811
    Abstract: An acrylic composition includes the reaction product of an acrylic polymer and carbon dioxide. The acrylic polymer includes the reaction product of a functionalized monomer, a first compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer. The first compound also includes epoxy functionality. The carbon dioxide is reactive with the acrylic polymer to form a carbonate-functional acrylic polymer. The acrylic composition is highly-branched and, when used in coating compositions in combination with a suitable cross-linking agent, enhances recoat adhesion and produces cured films that have optimum scratch, mar, and chip performance, and acid etch resistance.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: May 22, 2007
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Marvin L. Green
  • Patent number: 7214329
    Abstract: The invention relates to an aqueous organic peroxide emulsion comprising an anti-freeze agent, a protective colloid, and a plasticiser wherein the plasticizer is an ester having a ratio of the number of carbon atoms present in the pasticiser molecule (excluding aromatic carbon atoms) to the number of ester groups in the molecule of higher than 8. These emulsions show a reduced droplet growth as compared to emulsions comprising a conventional plasticizer, i.e. the emulsions of the invention are more stable upon storage than the emulsions of the prior art. The invention emulsions are particularly useful in polymerization processes such as the polymerization of vinyl chloride monomer.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: May 8, 2007
    Assignee: Akzo Nobel N.V.
    Inventor: Boen H. O
  • Patent number: 7144966
    Abstract: An acrylic composition is formed by reacting a functionalized, chain-stopping monomer, a first compound, and a highly-branched, polyfunctional core molecule. The first compound includes vinyl functionality and at least one other functionality that is different from the vinyl functionality, such as epoxy functionality. The first compound, specifically the vinyl functionality of the first compound, reacts with the monomer to form a functionalized intermediate, and the core molecule reacts with this functionalized intermediate to form the acrylic composition.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: December 5, 2006
    Assignee: BASF Corporation
    Inventor: Swaminathan Ramesh
  • Patent number: 7087689
    Abstract: A method of homogeneously polymerizing styrene comprising admixing an ethylenically unsaturated monomer and an initiation system that is soluble in the monomer. This system includes a metal; a peroxide, hydroperoxide or mixture thereof; and a reductant. Under appropriate reaction conditions, the cyclic oxidation and reduction of the metal produces free radicals which initiate homogeneous polymerization of the ethylenically unsaturated monomer. The invention beneficially enables relatively low temperature processing with inexpensive initiation.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: August 8, 2006
    Assignee: Fina Technology, Inc.
    Inventors: Jay Reimers, Jose M. Sosa
  • Patent number: 7078457
    Abstract: An aqueous composition including a polymer having polymerized ethylenically unsaturated acid monomer is disclosed. The aqueous composition is prepared in the presence of select organic compounds. As provided is a process to prepare the aqueous composition. The aqueous composition is useful as a dispersant for inorganic particles, a thickener or rheology modifiers for various aqueous formulations, and as a dispersing resin.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: July 18, 2006
    Assignee: Rohm and Haas Company
    Inventors: David Richard Amick, Ralph Craig Even, Ann Robertson Hermes, Rosemarie Palmer Lauer
  • Patent number: 7053161
    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: January 12, 2005
    Date of Patent: May 30, 2006
    Assignee: Oxy Vinyls, L.P.
    Inventors: Ross J. Cozens, Qi Wang, M. Fredrick V. Glock, Jr., Daniel A. Zust
  • Patent number: 7041733
    Abstract: It has been discovered that certain compounds serve as particle size regulators when employed together with peroxide initiators for the polymerization of vinylaromatic monomers in the presence of diene polymers. Suitable compounds that can control particle size include, but are not necessarily limited to, cobalt naphthenate, zinc naphthenate, iron octoate, calcium octoate, zinc octoate, zinc neodecanoate, potassium octoate, copper naphthenate, calcium versalate, and the like. Use of these metal carboxylates when vinylaromatic monomers are polymerized in the presence of polybutadienes and peroxide initiators results in reduced polybutadiene particles. Grafting and morphology characteristics may also be improved.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: May 9, 2006
    Assignee: Fina Technology, Inc.
    Inventors: Cyril Chevillard, Jose M. Sosa
  • Patent number: 7014790
    Abstract: This invention concerns an acrylate adhesive that cures at room temperature and has excellent dimensional stability. The adhesive may be used in applications such as for fiber optic connectors. The adhesive may be made by curing a two-part system or by use of a primer-based system. The two part system may include an adhesive part A, which may include one or more monofunctional, difunctional, or trifunctional acrylate or methacrylate monomers, a peroxide or hydroperoxide free-radical initiator, an antioxidant, and optionally, additives such as thickeners, thixotropes, and adhesion promoters; and an activator part B, which may contain a N,N-disubstituted aromatic amine, a difunctional methacrylate monomer, an antioxidant, and optionally, additives such as thickeners, thixotropes, and adhesion promoters.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: March 21, 2006
    Assignee: Texas Research International, Inc.
    Inventors: John Werner Bulluck, Brad A. Rix
  • Patent number: 7012119
    Abstract: A method of free radical polymerization and for cleaving a thio group from the resulting polymer is provided. The method comprises forming a mixture of one or more monomers, at least one free radical source and a control agent, wherein the control agent comprises a thio moiety. The mixture is polymerized, and the resulting polymer is mixed with a free radical source, and optionally an addition fragmentation agent under cleavage conditions. The thio moiety on the polymer is replaced with a group of interest.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: March 14, 2006
    Assignee: Symyx Technologies, Inc.
    Inventors: Dominique Charmot, Han Ting Chang, Wenyue Wang, Marcelo Piotti
  • 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: 6958368
    Abstract: The present invention relates to new cure accelerators for anaerobic curable compositions. These anaerobic cure accelerators are generally sulfinimides and oxygen and sulfur derivatives thereof, sulfonimides and oxygen and sulfur derivatives thereof, sulfonamides and oxygen and sulfur derivatives thereof, and oxygen and sulfur analogues of sulfimides.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: October 25, 2005
    Assignee: Henkel Corporation
    Inventors: Philp T. Klemarczyk, Karen R. Brantl, Andrew D. Messana
  • Patent number: 6919409
    Abstract: A method of free radical polymerization and for cleaving a thio group from the resulting polymer is provided. The method comprises forming a mixture of one or more monomers, at least one free radical source and a chain transfer agent, wherein the chain transfer agent comprises a thio moiety. The mixture is polymerized, and the resulting polymer is mixed with a free radical source, and a monomer having little or no homopolymerizability under cleavage conditions. The thio moiety on the polymer is replaced with a group of interest.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: July 19, 2005
    Assignee: Symyx Technologies, Inc.
    Inventors: Dominique Charmot, Marcelo Piotti
  • Patent number: 6897277
    Abstract: The present invention relates to phenyl glycines and derivatives thereof as cure accelerators for anaerobic curable compositions.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: May 24, 2005
    Assignee: Henkel Corporation
    Inventors: Philip T. Klemarczyk, Karen R. Brantl
  • Patent number: 6875802
    Abstract: Disclosed are compositions and processes for preparing polymeric materials having polymerizable units derived from at least one C8 to C30 alkyl (meth)acrylate monomer, and at least one chain branching unit. The presence of the chain branching unit suprisingly results in the polymeric composition having non-gelled polymer chains. The polymeric compositions are useful as additives for improving the melt strength of thermoplastic resins.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: April 5, 2005
    Assignee: Rohm and Haas Company
    Inventors: Carlos Alfonso Cruz, Eugene Patrick Dougherty, Harry Richards Herman, III, Robert Julian Smith, Morris Christopher Wills, Robert Victor Slone
  • Publication number: 20040266965
    Abstract: A method for making hydrophilic homopolymers and copolymers of poly 2-hydroxyethyl methacrylate. Also disclosed are coatings, films, hydrogels, cosmetic compositions, dermatological compositions, pressure sensitive adhesives containing the hydrophilic homopolymers or copolymers of poly 2-hydroxyethylmethacrylate. Further disclosed are methods of coating substrates with the hydrophilic homopolymers and copolymers of poly 2-hydroxyethyl methacrylate and hydrophilic pressure sensitive adhesives.
    Type: Application
    Filed: March 12, 2004
    Publication date: December 30, 2004
    Applicant: Avery Dennison Corporation
    Inventors: Daniel L. Holguin, H. Paul Barker, Kenneth S. Lin
  • Patent number: 6835762
    Abstract: The present invention provides a new class of materials effective as cure accelerators for anaerobic curable compositions. The addition of these materials into anaerobic adhesives as a replacement for conventional curatives, such as acetyl phenyl hydrazine and maleic acid or toluidines, surprisingly provides at least comparable cure speeds and physcial properties for the reaction products formed therefrom.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: December 28, 2004
    Assignee: Henkel Corporation
    Inventors: Philp T. Kelmarczyk, Karen R. Brantl
  • Patent number: 6828400
    Abstract: Anaerobic and heat curing polymerizable impregnation compositions for sealing pourous articles are disclosed. The compositions contain glycerol, oxygenated glycerol or (meth)acrylate glycerol to improve the washability of the compositions in aqueous solutions. The compositions may contain other compounds to effect the curing characteristics of the sealants.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: December 7, 2004
    Assignee: Henkel Corporation
    Inventors: Frederick F. Newberth, III, Peter J. Chupas
  • Patent number: 6797767
    Abstract: This invention relates to a polymerizable composite material and method of making at least one multifunctional acid containing monomer having a concentration ranging from about 10% to about 85%, a non-reactive filler having a concentration ranging from about 1% to about 80%, a polymerization system having a concentration ranging from about 1.5% to about 15%, and water having a concentration ranging from about 0.1% to about 25%.
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: September 28, 2004
    Assignee: Pulpdent Corporation
    Inventors: Jan G. Stannard, Kenneth J. Berk
  • Patent number: 6794467
    Abstract: The invention discloses a process for the preparation of polymeric absorbents useful for gelling organic liquids. The process comprises mixing one or more monomers with a cross-linking agent, a free radical initiator, an optional solvent, optionally in the presence of a transition metal source and subjecting the mixture so obtained to a conventional polymerisation method. The polymer is removed, crushed to obtain polymer powder, washed with solvent and dried by conventional methods to remove unreacted monomers, followed by swelling in alcohols to obtain the desired product.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: September 21, 2004
    Assignee: Council of Scientific and Industrial Research
    Inventors: Ashish Kishor Lele, Shyni Varghese, Manohar Virupax Badiger, Raghunath Anant Mashelkar
  • Patent number: 6774198
    Abstract: The present invention relates to partially branched polymers having a number-average molecular weight Mn in the range from 500 to 20 000 daltons and synthesized from ethylenically unsaturated monomers including: i) from 80 to 99.9% by weight of monoethylenically unsaturated monomers A, and ii) from 0.1 to 20% by weight of monomers B containing at least two nonconjugated ethylenically unsaturated double bonds, the weight fraction of the monomers A and B being based on the total amount of the ethylenically unsaturated monomers that constitute the polymer.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: August 10, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Binder, Bernd Bruchmann