Patents Represented by Attorney Michael Leach

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  • Use of N,N-dialkyl ureas in photoresist developers
    Patent number: 6120978
    Abstract: This invention provides water-based photoresist developer/electronics cleaning compositions manifesting reduced equilibrium and dynamic surface tension by the incorporation as surfactant of an effective amount of certain N,N-dialkyl urea compounds of the structure where R and R' are independently C1 to C6 alkyl or cycloalkyl with the sum of the carbon atoms in both R and R' being 6 to 12.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: September 19, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Anthony Marsella, Kevin Rodney Lassila
  • Single package ionic emulsion polymers and their preparation
    Patent number: 6121350
    Abstract: One component water-based coatings, inks, adhesives and sealants comprising enhanced molecular weight epoxy emulsions and inactivated amines.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: September 19, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lowell O. Cummings, Patrick A. Terrizzi, Norman A. Gac
  • Polymers having dual crosslinkable functionality and process for forming high performance nonwoven webs
    Patent number: 6117492
    Abstract: This invention relates to polymers particularly suited for use in preparing high quality nonwoven products. The binders for the banquet incorporate at least two different but reactive functionalities and which are capable of reacting with two other multifunctional reactants each of which will react with at least one of the functionalities present in the polymer. The two functionalities copolymerized into these backbones include the acetoacetoxy moiety and a carboxylic acid group. The crosslinking is effected by adding a compound capable of reacting and crosslinking the acetoacetoxy moiety and another compound capable of reacting and crosslinking the carboxylic acid functionality. The former can be a dialdehyde such as glyoxal or glutaraldehyde.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: September 12, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Joel Erwin Goldstein, Ronald Joseph Pangrazi
  • Polyurethane catalyst compositions for improving rigid foam performance
    Patent number: 6114403
    Abstract: A polyurethane catalyst composition comprises N,N'-bis(3-dimethylaminopropyl) urea and 3-dimethylaminopropyl urea in a ratio that can be varied to systematically control flowability, % open cell content and k-factor value for rigid polyurethane foam to enhance processibility. Increasing the N,N'-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio decreases the open cell content and k-factor value of the foam whereas decreasing the N,'N-bis(3-dimethylaminopropyl) urea to 3-dimethylaminopropyl urea ratio improves the flowability of the foaming composition.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: September 5, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lisa Ann Mercando, Jane Garrett Kniss, John William Miller
  • Polyurethaneurea elastomers for dynamic applications
    Patent number: 6114488
    Abstract: A method for the rotational casting of a polyurethane elastomer onto a rotating substrate which comprises mixing a polyurethane prepolymer, an amine curative and optionally a polyol in a mixing head and depositing the mixture onto the rotating substrate, the amine curative comprising:(a) 2-45 wt % aminobenzoate polyol having molecular weight of 200-3,000,(b) 55-98 wt % aromatic polyamine, and(c) 0 to <5 parts by wt carboxylic acid catalyst per hundred parts (a) and (b),the amine curative being at a temperature sufficient to melt the amines when mixed with the polyurethane prepolymer.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: September 5, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mary Joanne Kulp, Edwin Lee McInnis
  • Surface tension reduction with N,N'-dialkylalkylenediamines
    Patent number: 6103799
    Abstract: This invention provides water-based compositions, particularly coating, ink, and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of certain alkylated diamine compounds of the structure ##STR1## where R and R' are independently C5 to C8 alkyl, and G is a C2-C6 linear or cyclic alkylene group which may contain C1-C4 alkyl substituents.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: August 15, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Rodney Lassila, Kristen Elaine Minnich, Richard Van Court Carr
  • Triethylenediamine and piperazine synthesis using zeolite catalysts modified with a silicon-containing compound
    Patent number: 6084096
    Abstract: A process for preparing triethylenediamine and piperazine by passing an ethanolamine, ethyleneamine, piperazine or morpholine over a pentasil-type zeolite at elevated temperature characterized by employing a ZSM-5 zeolite in the hydrogen or ammonium form which has been treated with a passivating agent which is a silicon-containing compound capable of deactivating the acidic sites on the zeolite surface.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: July 4, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Hong-Xin Li, Jose Guadalupe Santiesteban, Lenore Ann Emig, John Nelson Armor
  • Aqueous wax dispersions as cell openers in making polyurethane flexible foams
    Patent number: 6080800
    Abstract: A method for preparing a flexible or semi-flexible polyurethane foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opening additive characterized in that the cell opening additive comprises an aqueous dispersion of particles comprising a wax substance and optionally an emulsifier, at least 35% of the particles having a size of 0.2 to 5 microns and a melting point which ranges from 0 to 55.degree. C. below the maximum foam exotherm temperature.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: June 27, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Herbert Frey, Allen Robert Arnold, Jr., Timothy Charles Boyer, Kevin Rodney Lassila
  • Ionic emulsion polymers and their preparation
    Patent number: 6063840
    Abstract: Two component water-based coatings, inks, adhesives and sealants prepared by reacting enhanced molecular weight epoxy emulsions with amine curatives.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: May 16, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lowell O. Cummings, Patrick A. Terrizzi, Norman A. Gac
  • Alkylated aminoether surfactants
    Patent number: 6051056
    Abstract: This invention provides water-based compositions, particularly coating, ink, and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of certain alkylated aminoether compounds of the structureR--HN(CH.sub.2).sub.p [O(CH.sub.2).sub.n ].sub.m O(CH.sub.2).sub.q NH--R'where n is 2-6, m is 0-4, and p and q are 2-6, and R and R' independently are an alkyl group comprising 5 to 18 carbons, preferably which is branched or in which the point of attachment to nitrogen is on a nonterminal carbon.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: April 18, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Rodney Lassila, Kristen Elaine Minnich, Richard Van Court Carr
  • Aminopropylbis(aminoethyl) ether compositions for the production of polyurethanes
    Patent number: 6051527
    Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, a cell stabilizer and a catalyst composition consisting essentially of a compound having the following formula I: ##STR1## where R.sup.1 is hydrogen or a C1-C4 linear or branched alkyl, hydroxyalkyl or aminoalkyl group;R.sup.2 is hydrogen or a C1-C6 linear or branched alkyl, hydroxyalkyl or aminoalkyl group; andR.sup.3 and R.sup.4 are independently hydrogen or a C1-C10 linear or branched alkyl, hydroxyalkyl or aminoalkyl group which may contain ether functionality.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: April 18, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ann Coates Lescher Savoca, Richard Paul Underwood, Richard Van Court Carr, James Stephen Emerick, Mark Leo Listemann
  • Reactive diluents for polyamidoamine epoxy curatives
    Patent number: 6046282
    Abstract: Reactive diluents comprise the amide and/or imidazoline reaction products of low molecular weight carboxylic acids, such as acetic acid, and polyalkyleneamines, such as 2-aminoethylpiperazine (AEP) and triethylenetetramine (TETA). The reactive diluents are prepared by condensation reaction of the carboxylic acid and the polyalkyleneamine at elevated temperature generating a mixture of unreacted polyalkyleneamine, amides and/or imidazolines. The reactive diluent reaction products are used to reduce the viscosity of high viscosity polyamidoamines prepared from fatty dimer acids and polyethyleneamines. Also disclosed is an epoxy composition comprising the epoxy curative composition of a polyamidoamine curing agent reduced in viscosity by the addition of the reactive diluent reaction product and an epoxy resin, such as the diglycidyl ether of bisphenol A.
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: April 4, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: William Edward Starner, Richard Scott Myers, Andrea Karen Smith
  • Dimensional stabilizing, cell opening additives for polyurethane flexible and rigid foams
    Patent number: 6046249
    Abstract: A method for preparing a polyurethane flexible or rigid foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opener characterized in that the cell opener comprises the reaction product of a C1-C20 hydrocarbyl group-containing organic acid anhydride and a substituted phenol which may be alkoxylated or an alkoxylated primary alcohol, optionally reacted in the presence of a tertiary amine urethane catalyst.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: April 4, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James Douglas Tobias, Julia Renae Bennett, Gary Dale Andrew, John Elton Dewhurst, Robert G. Petrella
  • Dimensional stabilizing, cell opening additives for polyurethane flexible foams
    Patent number: 6043290
    Abstract: A method for preparing a polyurethane flexible foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opener characterized in that the cell opener comprises the reaction product of a C1-C20 hydrocarbyl group-containing organic acid anhydride and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, optionally reacted in the presence of a tertiary amine urethane catalyst.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: March 28, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Robert G. Petrella
  • Adhesion promoters for plastisols
    Patent number: 6040385
    Abstract: Plastisol adhesion promoters of amidoamines, imidoamines, and esteramines are prepared from copolymers of monounsaturated carboxylic acids, or their derivatives, ethylenically unsaturated compounds, in particular .alpha.-olefins, and polyamines.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: March 21, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Albert Van De Berg, Doris Fitzek
  • Polyurea elastomeric microcellular foam
    Patent number: 6020392
    Abstract: A method for making a polyurea microcellular elastomeric foam by reacting an organic polyisocyanate with a di-(aminobenzoate) ester of an oligomeric polyol in the presence of a blowing agent and, optionally, urethane catalyst and cell stabilizing agent.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: February 1, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Sandra Ann Kushner, John William Miller, James Douglas Tobias
  • Surface tension reduction with alkylated higher polyamines
    Patent number: 6015852
    Abstract: This invention provides water-based compositions, particularly coating, ink, and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of certain alkylated polyamine compounds of the structures I and IIRHN--[(CH.sub.2).sub.n NH].sub.p --(CH.sub.2).sub.n NHR Iwhere the R groups are independently hydrogen or C5 to C8 alkyl, provided that at least one R is not hydrogen; n is 2 to 6 and p is 2 to 8, and ##STR1## where the R groups are independently hydrogen or C5 to C8 alkyl, provided at least one R is not hydrogen, m is 2 to 6, t is 0 to 3, q is 0 to 3, and r is 0 to 5.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: January 18, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Rodney Lassila, Kristen Elaine Minnich, Richard Van Court Carr
  • Polyamide curing agents based on mixtures of polyethyleneamines and piperazine derivatives
    Patent number: 6008313
    Abstract: Compositions of amine terminated polyamide resins useful for curing epoxy resins are disclosed comprising combinations of fatty mono-acids, dimer acids, polyethyleneamines, and piperazine ring containing polyamines having an N--H functionality of 2 or 3 per mole selected from the group consisting of piperazine, or N-aminoalkylpiperazine, where the alkyl chain is a C2 to C6 alkyl chain, wherein the ratio of equivalents of fatty mono-acid to dimer acid can range from about 0.001:1 to about 1:1, the ratio of moles of piperazine ring containing polyamine to polyethylene amine can range from about 0.1:1 to about 1:1, and the ratio of moles of polyamine to equivalents of acid can range from about 0.6:1 to about 1.2:1. Coating compositions comprising these polyamide resins are also disclosed.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: December 28, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frederick Herbert Walker, William Edward Starner, Andrea Karen Smith
  • Surface tension reduction with N,N-dialkyl ureas
    Patent number: 5985968
    Abstract: This invention provides water-based compositions, particularly coating, ink, and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of an effective amount of certain N,N-dialkyl urea compounds of the structure ##STR1## where R and R' are independently C1 to C6 alkyl or cycloalkyl with the sum of the carbon atoms in both R.sub.1 and R.sub.2 being 6 to 12.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: November 16, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Rodney Lassila, John Anthony Marsella
  • Cyclic urea surfactants
    Patent number: 5972431
    Abstract: This invention provides water-based compositions, particularly coating, ink, and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of certain cyclic urea compounds of the structure ##STR1## where R is a C6 to C12 alkyl group or R"O--(CH.sub.2).sub.m -, R' is hydrogen or methyl, R" is a C4 to C12 alkyl group, m is 2-4 and n is 1 or 2.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: October 26, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Anthony Marsella, Kevin Rodney Lassila