Patents by Inventor Donald Douglas May

Donald Douglas May 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: 10822746
    Abstract: Disclosed herein is a wallpaper, including: (a) a paper substrate including a paper layer and an ink decorative layer attached to an upper surface of the paper layer that faces away from the wall during use; (b) a fluorine-containing coating attached to a surface of the ink decorative layer; and (c) a supporting layer attached to a lower surface of the paper substrate, in which the supporting layer comprises 25 to 45 wt % of polyacrylate, 25 to 40 wt % of a styrene-acrylic acid copolymer and 10 to 50 wt % of inorganic particles based on the total weight of the supporting layer, wherein the inorganic particles are selected from the group consisting of silicon dioxide, titanium dioxide, calcium carbonate, kaolin clay, diatomite and talc powder, and a combination of two or more thereof.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: November 3, 2020
    Assignee: DUPONT ELECTRONICS, INC.
    Inventors: Zhang Honggui, Donald Douglas May
  • Publication number: 20190106843
    Abstract: Disclosed herein is a wallpaper, including: (a) a paper substrate including a paper layer and an ink decorative layer attached to an upper surface of the paper layer that faces away from the wall during use; (b) a fluorine-containing coating attached to a surface of the ink decorative layer; and (c) a supporting layer attached to a lower surface of the paper substrate, in which the supporting layer comprises 25 to 45 wt % of polyacrylate, 25 to 40 wt % of a styrene-acrylic acid copolymer and 10 to 50 wt % of inorganic particles based on the total weight of the supporting layer, wherein the inorganic particles are selected from the group consisting of silicon dioxide, titanium dioxide, calcium carbonate, kaolin clay, diatomite and talc powder, and a combination of two or more thereof.
    Type: Application
    Filed: April 26, 2017
    Publication date: April 11, 2019
    Inventors: Honggui Zhang, Donald Douglas May
  • Patent number: 9637657
    Abstract: In a first aspect, a liquid fluoropolymer coating composition includes a first fluoropolymer selected from homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride, a second fluoropolymer including a highly fluorinated fluoropolymer having a fluorine content of at least 60 weight percent, a compatible cross-linkable adhesive polymer, a cross-linking agent and solvent. In a second aspect, a fluoropolymer coated film includes a polymeric substrate film and a fluoropolymer coating on the polymeric substrate film.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: May 2, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Donald Douglas May, Brian C Auman
  • Publication number: 20160168410
    Abstract: In a first aspect, a film includes a fluoropolymer. The fluoropolymer includes a blend of polyvinyl fluoride and a fluoroadditive. The fluoroadditive includes a fluoropolymer having pendant trifluoromethyl groups. In a second aspect, a fluoropolymer coated film includes a polymeric substrate film and a fluoropolymer coating on the polymeric substrate film. The fluoropolymer coating includes a blend of polyvinyl fluoride and a fluoroadditive. The fluoroadditive includes a fluoropolymer having pendant trifluoromethyl groups. In a third aspect, a highly cleanable article includes a fluoropolymer. The fluoropolymer includes a blend of polyvinyl fluoride and a fluoroadditive. The fluoroadditive includes a fluoropolymer having pendant trifluoromethyl groups.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 16, 2016
    Inventors: MICHAEL JOSEPH BROWN, EDWIN JAMES LIGHTFOOT, DONALD DOUGLAS MAY, MOOKKAN PERIYASAMY, RONALD EARL USCHOLD
  • Publication number: 20150299498
    Abstract: In a first aspect, a transparent fluoropolymer coated film includes a polymeric substrate film and a fluoropolymer coating on the polymeric substrate film. The fluoropolymer coating includes fluoropolymer selected from homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride blended with a compatible adhesive polymer and a light stabilizer. The transparent fluoropolymer coated film has a transmission of at least 75 percent in the visible range. In a second aspect, a building structure comprising a transparent fluoropolymer coated film. In a third aspect, a liquid fluoropolymer coating composition includes a fluoropolymer selected from homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride, a light stabilizer including a combination of a UV absorber and a hindered amine light stabilizer, solvent, a compatible cross-linkable adhesive polymer and a cross-linking agent.
    Type: Application
    Filed: April 1, 2015
    Publication date: October 22, 2015
    Inventors: NATHANIEL REED SCHWARTZ, Donald Douglas May
  • Publication number: 20150299497
    Abstract: In a first aspect, a liquid fluoropolymer coating composition includes a first fluoropolymer selected from homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride, a second fluoropolymer including a highly fluorinated fluoropolymer having a fluorine content of at least 60 weight percent, a compatible cross-linkable adhesive polymer, a cross-linking agent and solvent. In a second aspect, a fluoropolymer coated film includes a polymeric substrate film and a fluoropolymer coating on the polymeric substrate film.
    Type: Application
    Filed: March 24, 2015
    Publication date: October 22, 2015
    Inventors: DONALD DOUGLAS MAY, BRIAN C. AUMAN
  • Publication number: 20150132582
    Abstract: In a first aspect, a liquid fluoropolymer coating composition includes a fluoropolymer selected from the group consisting of homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride, a pigment, a dispersing agent including a block acrylic compound or a graft acrylic compound, a viscosity reducing compound and solvent. In a second aspect, a process for forming a fluoropolymer coated film includes coating a polymeric substrate film with a liquid fluoropolymer coating composition, wherein the liquid fluoropolymer coating composition includes a fluoropolymer selected from homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride, a pigment, a dispersing agent, a viscosity reducing compound, a mixed catalyst, solvent, a compatible cross-linkable adhesive polymer and a cross-linking agent.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 14, 2015
    Inventors: BRIAN C. AUMAN, Donald Douglas May
  • Publication number: 20150133589
    Abstract: A pigment dispersion includes a pigment, a dispersing agent, a viscosity reducing compound and solvent. The dispersing agent includes a block acrylic compound or a graft acrylic compound.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 14, 2015
    Inventors: Brian C. AUMAN, Donald Douglas MAY
  • Publication number: 20150034148
    Abstract: In a first aspect, a liquid fluoropolymer coating composition includes a fluoropolymer selected from homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride, a mixed catalyst, solvent, a compatible cross-linkable adhesive polymer and a cross-linking agent. The mixed catalyst includes a main catalyst and a co-catalyst. The main catalyst includes an organotin compound. In a second aspect, a fluoropolymer coated film includes a polymeric substrate film and a fluoropolymer coating on the polymeric substrate film. The fluoropolymer coating includes a fluoropolymer selected from homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride, a compatible cross-linked adhesive polymer, and a mixed catalyst. The mixed catalyst includes a main catalyst and a co-catalyst. The main catalyst includes an organotin compound.
    Type: Application
    Filed: July 17, 2014
    Publication date: February 5, 2015
    Inventor: DONALD DOUGLAS MAY
  • Publication number: 20110195212
    Abstract: The present invention relates to novel flame retardant polycarbonate resin compositions comprising at least one aromatic polycarbonate resin, at least one anti-drip agent, and at least one salt as defined herein. The present invention also provides methods for preparing articles comprising said flame retardant composition, and articles made therefrom.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 11, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Christopher P. Junk, Donald Douglas May
  • Patent number: 7947770
    Abstract: The present invention relates to novel flame retardant polycarbonate resin compositions comprising at least one aromatic polycarbonate resin, at least one anti-drip agent, and at least one salt as defined herein. The present invention also provides methods for preparing articles comprising said flame retardant composition, and articles made therefrom.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: May 24, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Christopher P. Junk, Donald Douglas May
  • Patent number: 7888408
    Abstract: A treated pigment comprising: (a) an inorganic pigment; (b) an organic compound comprises a fluoroalkyl group and a hydrocarbon group and having the structure: RH-L-RF, wherein RF is a fluorochemical component containing at least one Zerewitinoff hydrogen; RH is an aliphatic group of 1-30 carbons, cycloaliphatic group of 3-30 carbons, an aromatic group of 6-30 carbons, or a group having the structure: R?—(OCH2CHR?)x?—(OCH2CH2)y?—O—, wherein R? is H or an aliphatic group of 1-20 carbons, R? is H or methyl; and x? and y? are the same or different integers ranging from 0-20 except that the sum of x? and y? is at least 1 when R? is H; and L is selected from the group CO, isocyanate, and a mixture of polyisocyanates containing at least three isocyanate groups per RH-L-RF structure. Plastic articles containing a pigment and the organic compound have improved cleanability with all the other needed properties and without the negative property of chaulking.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: February 15, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Donald Douglas May
  • Publication number: 20100247862
    Abstract: The disclosure provides a self cleaning thermoplastic substrate surface, comprising: a thermoplastic substrate surface having secured thereto a composite comprising a thermoplastic resin powder and hydrophobically treated particle, whereby the hydrophobically treated particle is adhered to the thermoplastic resin powder.
    Type: Application
    Filed: November 18, 2008
    Publication date: September 30, 2010
    Applicant: E.I. DuPont De Nemours and Company
    Inventor: Donald Douglas May
  • Patent number: 7723414
    Abstract: An antistatic system useful for mixing with thermoplastic polymers is disclosed which comprises an inorganic oxide, typically TiO2, treated with a siloxane and an ethoxylated alkylamine. The antistatic system can be used in shaped polymer articles to improve the dust-attracting resistance of the articles.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: May 25, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Donald Douglas May
  • Publication number: 20080221241
    Abstract: The present invention relates to novel flame retardant polycarbonate resin compositions comprising at least one aromatic polycarbonate resin, at least one anti-drip agent, and at least one salt as defined herein. The present invention also provides methods for preparing articles comprising said flame retardant composition, and articles made therefrom.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 11, 2008
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Christopher P. Junk, Donald Douglas May
  • Publication number: 20080171818
    Abstract: A treated pigment comprising: (a) an inorganic pigment; (b) an organic compound comprises a fluoroalkyl group and a hydrocarbon group and having the structure: RH-L-RF, wherein RF is a fluorochemical component containing at least one Zerewitinoff hydrogen; RH is an aliphatic group of 1-30 carbons, cycloaliphatic group of 3-30 carbons, an aromatic group of 6-30 carbons, or a group having the structure: R?—(OCH2CHR?)x?—(OCH2CH2)y?—O—, wherein R? is H or an aliphatic group of 1-20 carbons, R? is H or methyl; and x? and y? are the same or different integers ranging from 0-20 except that the sum of x? and y? is at least 1 when R? is H; and L is selected from the group CO, isocyanate, and a mixture of polyisocyanates containing at least three isocyanate groups per RH-L-RF structure. Plastic articles containing a pigment and the organic compound have improved cleanability with all the other needed properties and without the negative property of chaulking.
    Type: Application
    Filed: March 16, 2006
    Publication date: July 17, 2008
    Inventor: Donald Douglas May
  • Publication number: 20080153953
    Abstract: An antistatic system useful for mixing with thermoplastic polymers is disclosed which comprises an inorganic oxide, typically TiO2, treated with a siloxane and an ethoxylated alkylamine. The antistatic system can be used in shaped polymer articles to improve the dust-attracting resistance of the articles.
    Type: Application
    Filed: December 13, 2007
    Publication date: June 26, 2008
    Inventor: Donald Douglas May
  • Publication number: 20080145552
    Abstract: Coating compositions comprise a coating base, a polyoxyalkylene siloxane additive and a fluorochemical wherein the polyoxyalkylene siloxane is of Formulae 1A, 1B, 1C, or 2: (R2)3SiO[Si(R2)2O]y[Si(R2)(R1)O]x[Si(R2)2O]zSi(R2)3Formula 1A (R2)3SiO[Si(R2)2O]x[Si(R2)2R1Formula 1B R1(R2)2SiO[Si(R2)2O]x[Si(R2)2O]Si(R2)2R1Formula 1C wherein each R2 is independently H, alkyl, or aryl; each R1 is a polyoxyalkylene group having the formula 3 as follows: —CnR4pH2n?pQCmR5pH2m?pOZR3Formula 3 wherein each R4 and R5 is independently H, alkyl, or aryl; Q is CnHR4, aryl, CH2CH(OR4), CH2(CH2OR4), S, O, SO, SO2, SO2NR4, OC(O), OC(NR4), NHC(X)NH, or OC(X)NH or triazole; Z is [C2H4O]a and [C3H6O]b in block or random order; X is O or S; m and n are each independently an integer of 2 to 8; a is an integer of 0 to about 30; b is an integer of 0 to about 20; provided that a+b is from 1 to about 50; each R3 is independently H, acyl, CH3, or a linear or branched alkyl or aryl group having 1 to about 20 carbon at
    Type: Application
    Filed: September 5, 2007
    Publication date: June 19, 2008
    Inventors: Mia Genevieve Berrettini, Axel Hans-Joachim Herzog, John Gavenonis, Donald Douglas May, Xianjun Meng
  • Publication number: 20080119598
    Abstract: An antistatic agent useful for mixing with thermoplastic polymers is disclosed which comprises a reaction product of an inorganic pigment, more typically TiO2; optionally at least one silane; and a siloxane compound.
    Type: Application
    Filed: January 13, 2006
    Publication date: May 22, 2008
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Donald Douglas May
  • Patent number: 7338995
    Abstract: Pigmented polymer compositions and processes for preparing melt-processible polymer compositions contain a melt-processible polymer, surface treated organic pigment, typically titanium dioxide, and a polymer processing aid are described. The pigment is surface treated by contact with a silicon-containing compound, such as octyltriethoxysilane followed by contact with an organic compound such as isostearic acid or ethoxylated silicone. The pigmented polymer composition containing a polymer processing aid facilitates production of shaped articles with low melt fracture.
    Type: Grant
    Filed: March 6, 2004
    Date of Patent: March 4, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Donald Douglas May, Bernd Zimmermann