Patents Represented by Attorney James A. Costello
  • Patent number: 6316519
    Abstract: Synthesis of linear acrylic polymers and copolymers having controlled molecular weight by the photoinitiated free radical polymerization of vinyl monomers in the presence of chain transfer agents to produce polymers useful in coating compositions and the like, including printing inks.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: November 13, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles Thomas Berge, Vincent Desobry
  • Patent number: 6291620
    Abstract: Process for the synthesis of block polymers, homopolymers and copolymers of narrow polydispersity having formula (1) by contacting selected vinyl monomer(s), vinyl-terminated compound(s) and free radicals in which effective control of production of polymer is achieved by controlling the mole ratio of vinyl monomer(s), vinyl-terminated compound(s) and free radicals relative to one another; and polymers produced thereby
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: September 18, 2001
    Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific Industrial Research Organization
    Inventors: Graeme Moad, Catherine Louise Moad, Julia Krstina, Ezio Rizzardo, Thomas Robert Darling, Charles Thomas Berge
  • Patent number: 6277497
    Abstract: A high solids coating composition comprising a branched hydroxy-functional polyester oligomer and a curing agent; and the oligomer itself containing at least 20% by weight of the binder of at least one of the following tertiary acid ester end groups: where R1, R2 and R3 are independently selected from CH3 and CH2OH; the composition being suitable as an automobile clearcoat or pigmented topcoat.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: August 21, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Armand Aerts, Anne Demarre, Jozef Huybrechts, G. Todd Palmer
  • Patent number: 6271340
    Abstract: This invention concerns the preparation of polymers of low polydispersity and/or controlled molecular weight and architecture employing living free radical polymerization initiated by an alkoxyamine initiator or nitroxide plus, optionally a free radical initiator, the polymer produced thereby; selected nitroxide and alkoxyamine initiators; and a process for making the initiators; the polymeric products being useful in protective coatings.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: August 7, 2001
    Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific & Industrial Research Organization
    Inventors: Albert G. Anderson, Alexei Gridnev, Graeme Moad, Ezio Rizzardo, San Hoa Thang
  • Patent number: 6268456
    Abstract: A sprayable coating composition that contains at least one soluble film-forming silicon-containing compound having, on average, more than one fuctionalized silicon group, a volatile organic carrier, a polymer microparticle component, and a catalyst; a substrate coated with the composition; a process for coating the substrate to provide a protective finish; the finish-protected substrate; certain oligomeric compounds and a process therefor.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: July 31, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Basil V. Gregorovich, Isidor Hazan, Robert Rudolph Matheson, Lech Wilczek
  • Patent number: 6239214
    Abstract: The invention concerns a graft copolymer emulsion which is anionically stabilized and which contains an amino-functional monomer. The graft copolymer, useful in a coating composition, has a weight average molecular weight of at least about 3,000 and comprises 20 to 95 weight percent of a polymer backbone and 5 to 80 weight percent of a macromonomer. The polymer backbone further comprises 0.5 to 30 weight percent of an amino-functional monomer and the macromonomer comprises at least about 5 weight percent of an unsaturated acid-functional monomer.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: May 29, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Josef Huybrechts, Peter Paul Bruylants, Anne De Marre
  • Patent number: 6197905
    Abstract: A process for the production of polymers by free radical polymerization, characterized in that there is added to the polymerization system one or more compounds of general formula (A), where R1 is a group capable of activating the vinylic carbon towards free radical addition; Y is OR2, where R2 is an optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, or optionally substituted saturated or unsaturated carbocyclic or heterocyclic ring; X is an element other than carbon selected from the Groups, IV, V, VI or VII of the Periodic Table or a group consisting of an element selected from the Groups IV, V, or VI to which is attached one or more oxygen atoms; and n is a number from 0 to 3, such that the valency of the group X is satisfied and, when n is greater than 1, the groups represented by R2 are identical or different.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: March 6, 2001
    Assignee: Commonwealth Scientific & Industrial Resarch Organization
    Inventors: Ezio Rizzardo, Gordon Francis Meijs, San Hoa Thang
  • Patent number: 6156114
    Abstract: A method for treating the surface of substantially each deagglomerated particle of an array of easily agglomerated particles by contacting deagglomerated particles with a plasma-activated gas species and modifying the surfaces of the deagglomerated particles to aid subsequent incorporation of the particles into a matrix composition; the module for deagglomerating and dispersing the particles into the plasma-activated gas; the apparatus that comprises the deagglomeration module (322) and a reaction chamber (20) in which the particles are treated with the plasma-activated gas; the method for deagglomerating particles that may reagglomerate after plasma treatment; and a color composition containing plasma-treated pigment particles.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: December 5, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Timothy Allan Bell, Wronald Scott Best, Michael Patrick Chouinard, Paul Francis Herman, James Lewis Hohman, Jr., Laurence J. Levase, Tyau-Jeen Lin, An-Gong Yeh, Thomas William Harding
  • Patent number: 6146703
    Abstract: A method for producing coating composition exhibiting sprayability at low VOC and excellent performance characteristics as a coating is disclosed. The composition is based on low molecular weight anhydride resin having pendant non-cyclic anhydride moieties and epoxy resin. The composition includes an active catalyst for controlling the volatility of the coating during cure. The composition also includes a surface tension reducing agent that wets the surface during coating application.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: November 14, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert J. Barsotti, Jeffery W. Johnson
  • Patent number: 6107392
    Abstract: An aqueous coating composition comprising a dispersed graft copolymer characterized by macromonomers attached at a terminal end thereof to a polymeric backbone which is acid functional, wherein the functional groups have been neutralized. Such compositions provide improved properties for an automotive finish.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: August 22, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Joseph Albert Antonelli, Robert J Barsotti, Lee Edwin Allen Becton, Christopher Scopazzi
  • Patent number: 6100350
    Abstract: This invention relates to a process for the synthesis of addition polymers containing branches upon branches and having a polymerizable olefin end group by a convenient one-pot copolymerization of selected vinyl monomers with chain polymerization initiators and a method to provide olefin end groups by chain transfer or termination agents; and polymers produced thereby.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: August 8, 2000
    Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific and Industrial Research Organization
    Inventors: Lech Wilczek, Elizabeth Forrester McCord
  • Patent number: 6080816
    Abstract: A coating comprising the silated reaction product of R.sup.1 (OH).sub.m and OCN(CH.sub.2).sub.t SiR.sup.4 (OR.sup.5).sub.2 and/or R.sup.2 --(SiYX.sub.2).sub.n ; a graft copolymer having an acrylic polymer based backbone and stabilizing arms comprising ethylenically unsaturated monomer, the backbone being insoluble and the arms being soluble in the composition; a melamine crosslinker; and an acrylic polyol; m, n, t, R.sup.1, R.sup.2 R.sup.4, R.sup.5, X and Y being defined in the text.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: June 27, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Basil V. Gregorovich, Isidor Hazan, Lech Wilczek
  • Patent number: 6020034
    Abstract: This invention concerns a process for imparting corrosion and creep resistance to a coating prepared from a particulate polymer composition and applied from a fluidized bed or by electrostatic spraying over metal substrates. The process of the present invention provides for maintaining the content of acid functionality of an acid-functionalized semicrystalline or acid-functionalized amorphous particulate polymer of the particulate polymer composition within a desired range. The acid functionality on the particulate polymer can be maintained, by crosslinking and/or neutralizing, within a desired range of the acid content which results in imparting corrosion and creep resistance to the coating applied over the metal substrates. Neutralizing the acid functionality of the polymer component results in hardening the coatings resulting therefrom. The process further provides for adding anticorrosive pigments to the composition for further improving corrosion resistance of the resultant coatings.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: February 1, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Rashi Akki, Basil V. Gregorovich, George K. Kodokian, George W. Prejean
  • Patent number: 5985956
    Abstract: An organic solvent-containing coating composition useful as a finish for automobiles and trucks in which the film-forming binder comprises a component having at least two acid groups, a polymer having both epoxy and silane functionality and an acrylic-core polymer having stabilizer components soluble in the solvent.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: November 16, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert John Barsotti, Ying Kao Lee, Laura Ann Lewin
  • Patent number: 5977278
    Abstract: The present invention relates to polymers having the formula: ##STR1## wherein: M, Q, X, Y, Z, R.sup.3 and R.sup.4 are as defined in the text.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: November 2, 1999
    Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific and Industrial Research Organisation
    Inventors: Ezio Rizzardo, San Hoa Thang, Graeme Moad, Charles T. Berge
  • Patent number: 5977256
    Abstract: A coating composition comprising a crosslinkable binder in an organic solvent, the binder composed of acrylic and polyester polyols plus a crosslinking agent, the polyester polyol containing a component derived from one or both of: a residue of dimer fatty acid and polyol, or residue of a polyacid and dimer alcohol, the composition being useful for coating metallic substrates.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: November 2, 1999
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Jozef Huybrechts, Stuart Alexander Kernaghan, Robert Vervoort
  • Patent number: 5936026
    Abstract: An aqueous coating composition comprising a graft copolymer characterized by carboxylic-acid or amine functional macromonomers attached at a terminal end thereof to a polymeric backbone, wherein the macromonomers are grafted in an aqueous carrier in which the carboxylic-acid or amine functional groups have been neutralized. Such compositions provide improved properties for an automotive finish.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: August 10, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jozef Huybrechts, Michael Fryd, Paul Bruylants, Kerstin Stranimaier
  • Patent number: 5932667
    Abstract: Adducts of vinyldioxo compounds comprising a crosslinkable silyl-functional terminal group are disclosed. Such adducts are useful for preparing curable coating compositions.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: August 3, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Basil V. Gregorovich, Isidor Hazan, Hisanori Omura
  • Patent number: 5932675
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: August 3, 1999
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Ezio Rizzardo, Gordon Francis Meijs, San Hoa Thang
  • Patent number: 5928577
    Abstract: Spherical particles of a copolymer composition comprising a crosslinker and/or coating additive(s) the particles being especially useful for coating various substrates; and an improved process for making such particles comprising forming the copolymer and unreacted crosslinker and/or other additives in a coating matrix.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: July 27, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: George Kevork Kodokian