Patents by Inventor Ralph Craig Even

Ralph Craig Even has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9556284
    Abstract: The invention relates to multi-stage polymer emulsions suitable for forming pressure sensitive adhesives with high peel and high temperature cohesion.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: January 31, 2017
    Assignee: Rohm and Haas Company
    Inventors: Ralph Craig Even, Sekhar Sundaram
  • Patent number: 7776975
    Abstract: The present invention relates to a process for preparing an aqueous polymer dispersion containing polymer particles dispersed in an aqueous medium. The process includes providing first polymer particles; adding a hydrophobic polymerization blocker or a styrenic monomer polymerization blocker to the aqueous medium containing the first polymer particles; and preparing second polymer particles in the presence of the first polymer particles. The aqueous polymer dispersion contain first polymer particles and the second polymer that differ according to at least one attribute such as particle diameter, molecular weight, composition, glass transition temperature, or morphology; or contain polymer particles having a broad polydispersity. The aqueous polymer dispersion prepared by the process of this invention is useful in a wide range of applications, including paints, adhesive, binders for nonwovens, and binders for paper coatings.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: August 17, 2010
    Assignee: Rohm and Haas Company
    Inventors: Robert Mitchell Blankenship, Gary William Dombrowski, Ralph Craig Even
  • Patent number: 7749934
    Abstract: A method for polymerizing ethylenically unsaturated monomers, including non-polar olefinic monomers, polar olefinic monomers, and combinations thereof, using a protected catalytic composition in an aqueous medium, is disclosed. An aqueous dispersion containing the protected catalytic composition is also disclosed, along with an aqueous dispersion of the addition polymer produced by the polymerization.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: July 6, 2010
    Assignee: Rohm and Haas Company
    Inventors: Ralph Craig Even, Willie Lau
  • Patent number: 7723396
    Abstract: This invention relates to composites comprising a substrate and a multi-stage latex polymer emulsion film.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: May 25, 2010
    Assignee: Rohm and Haas Company
    Inventors: Ralph Craig Even, Robert Victor Slone, Sekhar Sundaram
  • Publication number: 20100003442
    Abstract: The invention relates to multi-stage polymer emulsions suitable for forming pressure sensitive adhesives with high peel and high temperature cohesion.
    Type: Application
    Filed: June 11, 2009
    Publication date: January 7, 2010
    Inventors: Ralph Craig Even, Sekhar Sundaram
  • Patent number: 7638576
    Abstract: According to the present invention, aqueous multi-stage polymer dispersions comprising an acid-functional first polymer and an epoxy-functional second polymer, wherein 90 mole % or more of the said epoxy groups, based on the moles of epoxy groups in the monomer mixture used to form the second polymer, are retained in the aqueous dispersion after said dispersion is stored in a sealed container for 10 days at 60° C. Further, methods of making the aqueous multistage polymer dispersion comprise polymerizing the monomers used to make the second polymer in the presence of an aqueous dispersion of the first polymer. Preferably, the second polymer is formed in the presence of 0.3 wt. % or less, based on the total weight of the first polymer and the ingredients to form the second polymer, of one or more strong acid surfactant, and 3) 0.1 wt.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: December 29, 2009
    Assignee: Rohm and Haas Company
    Inventors: Wayne Devonport, Ralph Craig Even
  • Publication number: 20080281005
    Abstract: This invention relates to composites comprising a substrate and a multi-stage latex polymer emulsion film.
    Type: Application
    Filed: January 7, 2008
    Publication date: November 13, 2008
    Inventors: Ralph Craig Even, Robert Victor Slone, Sekhar Sundaram
  • Publication number: 20080176996
    Abstract: This invention relates to a latex polymer that when used in adhesive formulations exhibits a favorable level of peel and shear balance as well as a resistance to water whitening.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 24, 2008
    Inventor: Ralph Craig Even
  • Patent number: 7241834
    Abstract: An aqueous acrylic emulsion polymer including, as copolymerized units, 70 to 99.5% by weight, based on dry polymer weight, monoethylenically unsaturated nonionic (meth)acrylic monomer and from 0.3 to 10% by weight, based on dry polymer weight, monoethylenically unsaturated acid monomer, wherein at least 40% by weight, based on dry polymer weight, of the emulsion polymer is formed by redox polymerization in the presence of 0.001 to 0.05 moles chain transfer agent per kg dry polymer weight is provided. An aqueous coating composition including the acrylic emulsion polymer, a method for improving the scrub resistance of a dry coating, a method for improving the adhesion of a dry coating, and a method for improving the adhesion of a dry coating to an alkyd substrate are provided.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: July 10, 2007
    Assignee: Rohm and Haas Company
    Inventor: Ralph Craig Even
  • Patent number: 7138438
    Abstract: A formulation for repelling particulate matter on the surface of a coating comprising polymeric nanoparticles having a mean particle diameter of from 1 to 50 nm. The polymeric nanoparticles may further be functionalized to impart additional characteristics to modify the surface of the dried coating to minimize the chances for particles to become embedded or attached to the coating.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: November 21, 2006
    Assignee: Rohm and Haas Company
    Inventors: Rosemarie Palmer Lauer, Ralph Craig Even, Donna Staley Grecian, Robert David Solomon
  • 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: 7071261
    Abstract: An aqueous composition including an aqueous dispersion of polymeric nanoparticles having a mean diameter of from 1 to 50 nanometers, the particles including, as polymerized units, at least one multi-ethylenically-unsaturated monomer and at least one ethylenically unsaturated water soluble monomer is discloseded. Certain embodiments of the composition include pigment particles and other polymer particles. The aqueous compositions include aqueous coating compositions.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: July 4, 2006
    Assignee: Rohm and Haas Company
    Inventors: Wayne Devonport, Ralph Craig Even, Ann Robertson Hermes, Dennis Paul Lorah, Joseph David Tanzer, Antony Keith VanDyk
  • Patent number: 6930141
    Abstract: An aqueous polymer blend composition including a predominant amount of soft polymer particles and a minor amount of hard polymer particles is provided. The soft polymer particles contain, as copolymerized units, 70 to 99.7% by weight monoethylenically unsaturated (meth)acrylic monomer and from 0.3 to 10% by weight monoethylenically unsaturated acid monomer, based on weight of soft polymer particles. The soft polymer particles are made by a select process including redox polymerization or polymerization in the presence of excess unreacted monomer. The aqueous polymer blend composition is useful for preparing dry coatings having improved dirt pickup resistance and acceptable scrub resistance. A method is provided for preparing a dry coating from the aqueous polymer blend composition.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: August 16, 2005
    Assignee: Rohm and Haas Company
    Inventors: Matthew Stewart Gebhart, Deborah Gay Fradkin, Bonnie Elizabeth Baker, John Michael Friel, Steven Scott Edwards, Caren Ann Puschak, Cindy Eckert, Ralph Craig Even
  • Publication number: 20050171274
    Abstract: An aqueous acrylic emulsion polymer including, as copolymerized units, 70 to 99.5% by weight, based on dry polymer weight, monoethylenically unsaturated nonionic (meth)acrylic monomer and from 0.3 to 10% by weight, based on dry polymer weight, monoethylenically unsaturated acid monomer, wherein at least 40% by weight, based on dry polymer weight, of the emulsion polymer is formed by redox polymerization in the presence of 0.001 to 0.05 moles chain transfer agent per kg dry polymer weight is provided. An aqueous coating composition including the acrylic emulsion polymer, a method for improving the scrub resistance of a dry coating, a method for improving the adhesion of a dry coating, and a method for improving the adhesion of a dry coating to an alkyd substrate are provided.
    Type: Application
    Filed: March 31, 2005
    Publication date: August 4, 2005
    Inventor: Ralph Craig Even
  • Patent number: 6887933
    Abstract: An aqueous acrylic emulsion polymer including, as copolymerized units, 70 to 99.5% by weight, based on dry polymer weight, monoethylenically unsaturated nonionic (meth)acrylic monomer and from 0.3 to 10% by weight, based on dry polymer weight, monoethylenically unsaturated acid monomer, wherein at least 40% by weight, based on dry polymer weight, of the emulsion polymer is formed by redox polymerization in the presence of 0.001 to 0.05 moles chain transfer agent per kg dry polymer weight is provided. An aqueous coating composition including the acrylic emulsion polymer, a method for improving the scrub resistance of a dry coating, a method for improving the adhesion of a dry coating, and a method for improving the adhesion of a dry coating to an alkyd substrate are provided.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: May 3, 2005
    Assignee: Rohm and Haas Company
    Inventor: Ralph Craig Even
  • Publication number: 20040220329
    Abstract: An aqueous polymer composition including a plurality of comb copolymer particles is disclosed. The comb copolymer particles contain comb copolymer having a polymer backbone with at least one attached graft segment. The polymer backbone and the at least one graft segment have select compositional ranges and select glass transition temperature ranges. Further, the comb copolymer contains as a polymerized unit at least one select monomer such as, aldehyde reactive group-containing monomer or certain styrenic monomers. The aqueous polymer composition of the present invention is useful for preparing coatings having one or more improved properties such as dirt pickup resistance, gloss, gloss retention, alkyd adhesion, and tint retention. A method for forming a coated substrate from the aqueous polymer composition of this invention is also provided.
    Type: Application
    Filed: March 24, 2004
    Publication date: November 4, 2004
    Inventors: Robert David Solomon, Ralph Craig Even, Willie Lau, David Michael Fasano, Karl Allen Bromm
  • Patent number: 6797328
    Abstract: An aqueous composition suitable for use, when dry, as an improved coating is provided including an aqueous emulsion polymer, the polymer having a glass transition temperature (Tg) from greater than 20° C. to 80° C., formed by the free radical polymerization of at least one ethylenically unsaturated nonionic acrylic monomer and 0-7.5%, by weight based on the total weight of the polymer, ethylenically unsaturated acid monomer in the presence of 0.01-1.0%, by weight based on the total weight of the polymer, t-alkyl hydroperoxide, t-alkyl peroxide, or t-alkyl perester wherein the t-alkyl group includes at least 5 Carbon atoms and, optionally, at least one other oxidant. A method of preparing the emulsion polymer, a method for providing a coated substrate wherein the coating contains the emulsion polymer having a Tg from −20° C. to 80° C., and a method for improving the scrub resistance of a coating by including the emulsion polymer having a Tg from −20° C. to 80° C.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: September 28, 2004
    Assignee: Rohm and Haas Company
    Inventors: Albert Benner Brown, Ralph Craig Even, Dennis Paul Lorah, Alvin Michael Maurice, Robert Victor Slone, Xun Tang
  • Publication number: 20040167274
    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: Application
    Filed: July 10, 2003
    Publication date: August 26, 2004
    Inventors: David Richard Amick, Ralph Craig Even, Ann Robertson Hermes, Rosemarie Palmer Lauer
  • Publication number: 20040102568
    Abstract: An aqueous coating composition including a pigment and an aqueous acrylic emulsion polymer including, as copolymerized units, from 50% to 99.75% by weight, based on dry polymer weight, monoethylenically unsaturated nonionic (meth)acrylic monomer and from 0.25% to 10% by weight, based on dry polymer weight, monoethylenically unsaturated acid monomer, the polymer having a Tg of −10° C. to 35° C. wherein the emulsion polymer is formed by a certain emulsion polymerization process at a temperature of from 70° C. to 99° C. in the presence of a thermal initiator is provided. Further provided is a method for forming a dry coating therefrom.
    Type: Application
    Filed: November 3, 2003
    Publication date: May 27, 2004
    Inventors: Brian Michael Bridgewater, Martin John Deetz, Ralph Craig Even, Matthew Stewart Gebhard, Caren Ann Puschak
  • Patent number: 6696519
    Abstract: A process for preparing an aqueous emulsion polymer including providing at least one ethylenically unsaturated monomer and a free radical redox initiator system under emulsion polymerization conditions, the redox initiator system including a water-soluble oxidizing agent, a water-insoluble oxidizing agent, and a sulfinic acid, or salts thereof, reducing agent; and effecting the polymerization of at least some of the ethylenically unsaturated monomer is provided. Also provided is a process for reducing the residual ethylenically unsaturated monomer content of an aqueous emulsion polymer.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: February 24, 2004
    Assignee: Rohm and Haas Company
    Inventors: Steven Charles Brown, Ralph Craig Even