Patents by Inventor John A. Simms

John A. Simms 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: 8263694
    Abstract: Grout compositions having a binder including water-borne polyurethane and a filler are described herein. An accelerator component is provided to control the rate of grout curing, thereby decreasing the time required between grout application and grout use. This result is achieved while providing sufficient time for grout application. Grout may be light-transmissive and include light-transmissive binder and filler.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: September 11, 2012
    Assignee: Starquartz Industries, Inc.
    Inventors: Christopher Warren, John A. Simms
  • Patent number: 6506899
    Abstract: Pigment dispersants prepared by reacting an isocyanate oligomer having an average functionality of at least three with a polyester or polyacrylate, a poly(ethylene glycol)alkyl ether, and a diamine having a primary amine and a tertiary amine have excellent stabilizing properties and offer a wide formulation latitude with a variety of solvent systems, including polar solvents and water, and are particularly useful as pigment dispersants for paints and coating applications.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: January 14, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John A. Simms
  • Patent number: 6037414
    Abstract: A polymeric pigment dispersant of a graft polymer having an acrylic polymer backbone and pending from the backbone, polyester side chains, cyclic imide groups and quaternary ammonium groups and the polymer having a calculated number average molecular weight of 8,000-50,000; wherein the graft copolymer is composed of(a) 10-50%, by weight of the of the graft polymer, of an acrylic copolymer backbone having a number average molecular weight of 2500-10,000 which, before reaction, contains 25-75% by weight of polymerized oxirane containing monomers;(b) 20-85%, by weight of the graft polymer, of a polyester copolymer, or mixture of different polyester copolymers, having a number average molecular weight of 500-10,000 which polyester copolymer is carboxylic-acid functional and is attached to the backbone by a reaction of the carboxylic acid functional group with oxirane group of the backbone;(c) 1-16%, by weight of the graft polymer, of cyclic imide groups attached to the backbone by a reaction of the imide group wi
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: March 14, 2000
    Assignee: E. I. du Pont Nemours and Company
    Inventors: John A. Simms, Aleksandr Sorser
  • Patent number: 6037390
    Abstract: An ink jet ink composition is provided which contains an aqueous vehicle; a colorant; and a polymeric dispersant comprising 2 to 50% by weight of monomers selected from .beta.-diketone containing monomers and ureido monomers, as well as a combination of such ink with a media having basic groups such as primary or secondary amines and divalent cations.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: March 14, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Loretta Ann Grezzo Page, Sheau-Hwa Ma, John A. Simms
  • Patent number: 5424364
    Abstract: The polymeric pigment dispersants of this invention are polyester/acrylic comb polymers which are the reaction product of 20-85% of a carboxylic functional polyester copolymer, 10-50% of an oxirane substituted acrylic copolymer, and 2 to 20% of an imide compound. These materials disperse a wide variety of pigments and are useful in solvent borne coatings where they can provide improved efficiency of pigment use, lower paint viscosity, and reduced emission of volatile organic solvent.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: June 13, 1995
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: John A. Simms, Michael W. J. West
  • Patent number: 5286782
    Abstract: A coating composition primarily used as a clear coat of a clearcoat/color coat automotive finish; the composition has a film forming binder solids content of about 30-70% by weight contains about(A) 50-80% by weight, based on the weight of the binder, of an acrylic polymer of polymerized monomers of styrene, and two methacrylate monomers and a hydroxy alkyl methacrylate or acrylate each having 1-4 carbon atoms in the alkyl group and the polymer has a number average molecular weight of about 1,000-12,000 and a calculated Tg of at least 40.degree. C. and(B) 1-20% by weight, based on the weight of the binder, of a polyol component and(C) 10-49% by weight, based on the weight of the binder, of an organic polyisocyanate.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: February 15, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Douglas M. Lamb, John A. Simms
  • Patent number: 5159047
    Abstract: Crosslinkable coatings that contain a polyol component which is a caprolactone oligomer containing a cycloaliphatic moiety having improved properties, especially lower viscosity and improved coating hardness, and are useful for coating metals and plastics.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: October 27, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John A. Simms
  • Patent number: 5003004
    Abstract: A blend of a softer continuous phase polymer reinforced with harder acrylic star polymer particles having reactive functional groups with crosslinking ability built in or provided by a third polymer. The harder polymer has a T.sub.g at least 10.degree. C. above that of the softer polymer, and the acrylic star polymer is preferably made by group transfer polymerization. This blend provides coating compositions, films and bulk polymer with enhanced toughness and flexibility.
    Type: Grant
    Filed: October 25, 1988
    Date of Patent: March 26, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John A. Simms
  • Patent number: 4945145
    Abstract: A curable silane resin, and a process for making same, having at least one of two units selected from the group consisting of a prepolymer (C) and a prepolymer (F); the prepolymer (C) having the formula (I): ##STR1## and the prepolymer (F) having the formula (III): ##STR2##The curable resin of our invention has excellent flexibility, solvent resistance and adhesion to organic materials. Furthermore our process for preparing the resin is simpler, more easily reproducible, and results in less unwanted by-prodducts than earlier processes for preparing similar silane resins.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: July 31, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Paul P. Bruylants, Patrick H. Corcoran, John A. Simms
  • Patent number: 4771117
    Abstract: This invention relates to a process of polymerizing acrylic esters and, more specifically, to initiators which are useful therein.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: September 13, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joel D. Citron, John A. Simms
  • Patent number: 4632964
    Abstract: A coating composition that forms a flexible finish and is used primarily as a clear finish over a colored or pigmented finish that are applied to flexible substrates of automobile and truck bodies; the composition contains as the film forming binder (1) a branched aliphatic polyester urethane which is the reaction product of a polyisocyanate and a branched aliphatic polyester and (2) preferably a methylated and butylated melamine formaldehyde crosslinking agent.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: December 30, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lili W. Altschuler, John A. Simms
  • Patent number: 4510298
    Abstract: Disclosed is an improvement in the (co)polymerization of an isocyanate-containing monomer, e.g., an isocyanatoalkyl methacrylate, forming a product of very low residual toxic monomeric isocyanate (less than 500 ppm) useful in avoiding air pollution. The improvement consists in adding a scavenger, a small amount of an active nonpolluting monomer such as butyl acrylate, near the end of the polymerization.
    Type: Grant
    Filed: April 13, 1983
    Date of Patent: April 9, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Roland G. Lindsey, John A. Simms
  • Patent number: 4474855
    Abstract: Articles comprising a substrate coated with selected isocyanatoalkyl (meth)acrylate polymers or copolymers, e.g., a copolymer of 2-isocyanatoalkyl methacrylate and butyl acrylate, are claimed.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: October 2, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Darryl W. Brixius, John A. Simms
  • Patent number: 4446175
    Abstract: Low molecular weight isocyanate-functional acrylic polymers prepared by direct reaction of the monomers, e.g., 2-isocyanatoethyl methacrylate and butyl acrylate, in the presence of a mercaptan chain-transfer agent are good coating materials applicable to a substrate as by spraying and curable by contact with moisture.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: May 1, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Darryl W. Brixius, John A. Simms
  • Patent number: 4436885
    Abstract: Low molecular weight polydisperse isocyanate-functional acrylic polymers are prepared by direct reaction of the monomers, e.g., 2-isocyanatoethyl methacrylate and butyl acrylate, in the presence of a mercaptan chain-transfer agent and a polymerization initiator but in the substantial absence of water and of Lewis-type bases.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: March 13, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Darryl W. Brixius, John A. Simms
  • Patent number: 4351755
    Abstract: Low molecular weight polydisperse isocyanate-functional acrylic polymers are provided which contain terminal monosulfide groups on at least 10% by number of polymer molecules but are substantially free of toxic monomeric isocyanates.The polymers are prepared by direct reaction of the monomers, e.g., 2-isocyanatoethyl methacrylate and butyl acrylate, in the presence of a mercaptan chain-transfer agent and a polymerization initiator but in the substantial absence of water and of Lewis-type bases. They can be crosslinked and are useful in a variety of applications such as moisture-curing coating compositions.
    Type: Grant
    Filed: October 8, 1980
    Date of Patent: September 28, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Darryl W. Brixius, John A. Simms
  • Patent number: 4346201
    Abstract: A polymer blend of(1) up to 40% by weight of a polymer of repeating units of -A- of hard acrylic segment and(2) at least 60% by weight of block polymer of the repeating units -A-B-A- wherein [A] is of a hard acrylic segment having a glass transition temperature of 25.degree. C. and above; and [B] is a segment of the formula ##STR1## where R is an alkylene group having 2-6 carbon atoms;R.sup.1 is aliphatic, cycloaliphatic or aromatic group;R.sup.2 is a polyester or a polyalkylene ether segment andn is from 0-10.The polymer is useful in coating compositions, in particular, coating compositions for flexible hydrocarbon rubber and polyvinyl chloride substrates used in automobiles and trucks.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: August 24, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John A. Simms
  • Patent number: 4255298
    Abstract: A graft copolymer having a polymeric backbone with pendent hydroxyl groups; wherein the hydrogen atom of at least the one the hydroxyl groups is replaced by the formula ##STR1## where R is an aliphatic group, a cycloaliphatic group or an aromatic group; R.sup.1 is an alkylene group having 2-6 carbon atoms; R.sup.2 is a polymer segment of a vinyl addition polymer, such as butyl acrylate/hydroxyethyl acrylate; coating compositions of this copolymer can be cross-linked with conventional cross-linking agents such as an alkylated melamine formaldehyde resin or an organic polyisocyanate and coating compositions useful for flexible elastomeric substrates can be prepared from this copolymer.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: March 10, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John A. Simms
  • Patent number: 4255541
    Abstract: A graft copolymer having a polymeric backbone with pendent hydroxyl groups; wherein the hydrogen atom of at least the one the hydroxyl groups is replaced by the formula ##STR1## where R is an aliphatic group, a cycloaliphatic group or an aromatic group; R.sup.1 is an alkylene group having 2-6 carbon atoms; R.sup.2 is a polymer segment of a vinyl addition polymer, such as butyl acrylate/hydroxyethyl acrylate; coating compositions of this copolymer can be cross-linked with conventional cross-linking agents such as an alkylated melamine formaldehyde resin or an organic polyisocyanate and coating compositions useful for flexible elastomeric substrates can be prepared from this copolymer.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: March 10, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John A. Simms
  • Patent number: 4251404
    Abstract: A graft copolymer having a polymeric backbone with pendent hydroxyl groups; wherein the hydrogen atom of at least the one the hydroxyl groups is replaced by the formula ##STR1## where R is an aliphatic group, a cycloaliphatic group or an aromatic group; R.sup.1 is an alkylene group having 2-6 carbon atoms; R.sup.2 is a polymer segment of a vinyl addition polymer, such as butyl acrylate/hydroxyethyl acrylate; coating compositions of this copolymer can be cross-linked with conventional cross-linking agents such as an alkylated melamine formaldehyde resin or an organic polyisocyanate and coating compositions useful for flexible elastomeric substrates can be prepared from this copolymer.
    Type: Grant
    Filed: November 7, 1979
    Date of Patent: February 17, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John A. Simms