Patents Represented by Attorney James C. Simmon

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  • High performance polyurethane coating compositions and processes for making same
    Patent number: 5115071
    Abstract: This invention relates to polyurethane coatings formed from prepolymers made by reacting polyisocyanates with long chain polyols having an average functionality of greater than 2. The resulting prepolymers have equivalent weights greater than about 250 grams per equivalent and preferably greater than about 350 grams per equivalent. An excess of polyisocyanate is reacted with the polyol component at an equivalent ratio of greater than 4:1 equivalents isocyanate per equivalent of polyol. Excess polyisocyanate is then removed from the prepolymer.The resulting polyurethane prepolymers are chain extended with compounds having active hydrogen atoms such as water, amines or short chain polyhydroxy compounds, e.g., diols to form the resulting coatings.
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: May 19, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jeffrey R. Quay, Sherri L. Bassner, Thomas M. Santosusso
  • Combustion of low BTU/high moisture content fuels
    Patent number: 5107777
    Abstract: A process for combusting low B.T.U. high moisture content fuels by enriching the normal process air used in the combustion process.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: April 28, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Walter T. Mullen
  • Vinyl acetate/ethylene/NMA copolymer emulsion for nonwoven binder applications
    Patent number: 5109063
    Abstract: A process for making an aqueous vinyl acetate/ethylene/N-methylolacrylamide copolymer emulsion comprising:(a) adding an initial charge containing all the vinyl acetate monomer to be polymerized and an effective amount of an emulsifying system consisting essentially of an anionic surfactant, especially a salt of an alkylphenoxy poly(ethyleneoxy) sulfate containing about 3-5 ethyleneoxy units,(b) pressurizing the reactor with sufficient ethylene to yield a copolymer having the desired Tg,(c) initiating polymerization at a temperature from 45.degree. to 85.degree. C., and(d) continuing polymerization at a temperature from 45.degree. to 85.degree. C., while continuously adding N-methylolacrylamide over a period of time such that the free vinyl acetate monomer content of the reaction medium is about 2-4% upon completion of the N-methylolacrylamide addition.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: April 28, 1992
    Assignee: Air Products and Chemicals, Inc
    Inventors: Tze-Chiang Cheng, Phillip A. Mango
  • Gas separation by adsorbent membranes
    Patent number: 5104425
    Abstract: Composite semipermeable membranes comprising porous adsorptive material supported by a porous substrate are disclosed for use in a process for the separation of multicomponent gas mixtures. In the process, one or more primary components adsorb within the pores of the adsorptive material and diffuse by surface flow through the membrane to yield a permeate stream enriched in one or more of the primary components. Methods for making the composite membranes are described.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: April 14, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Madhukar B. Rao, Shivaji Sircar, Timothy C. Golden
  • High step coverage silicon oxide thin films
    Patent number: 5098865
    Abstract: A process for preparing high step coverage silicon dioxide coatings on semiconductor wafers comprising the placing of the wafer to be coated in a process chamber, introducing disilane and nitrous oxide into the process chamber and maintaining the wafer in an atmosphere consisting essentially of a gaseous mixture of disilane and nitrous oxide and initiating and maintaining plasma enhanced chemical vacuum deposition of silicon dioxide from said gaseous mixture by applying radio frequency energy to the wafer to create a plasma adjacent the surface of said wafer is disclosed.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: March 24, 1992
    Inventors: Jose R. Machado, Terry A. Francis, Hans P. W. Hey
  • Modified carbon molecular sieves for gas separation
    Patent number: 5098880
    Abstract: A process is provided for making a modified carbon molecular sieve which is suitable for separating gases having different adsorption rates on the sieve. The process involves modifying a starting sieve support having a majority of micropores with an effective pore size of about 4.5 to 8 angstroms, with a two-step process in which the sieve is contacted with two different volatile carbon-containing organic compounds, preferably hydrocarbons, which have different molecular dimensions. The compound used in the first step is larger than that in the second step, so that the pore openings of the micropores of the support are narrowed successively in two distinct steps without filling the micropores themselves. The invention also discloses an improved carbon molecular sieve and the separation of gases, such as oxygen from nitrogen, by the use of this improved adsorbent.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: March 24, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Thomas R. Gaffney, Thomas S. Farris, Alejandro L. Cabrera, John N. Armor
  • Processes for the chemical vapor deposition of copper and etching of copper
    Patent number: 5098516
    Abstract: A process is provided for selectively depositing copper films on metallic or other electrically conducting portions of substrate surfaces by contacting the substrate at a temperature from 110.degree. to 190.degree. C. with a volatile organometallic copper complex, in the gas phase, represented by the structural formula: ##STR1## wherein R.sup.1 and R.sup.3 are each independently C.sub.1 -C.sub.8 perfluoroalkyl, R.sup.2 is H or C.sub.1 -C.sub.8 perfluoroalkyl and L is carbon monoxide, an isonitrile, or an unsaturated hydrocarbon ligand containing at least one non-aromatic unsaturation.
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: March 24, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John A. T. Norman, Paul N. Dyer
  • Cleaning agents comprising beta-diketone and beta-ketoimine ligands and a process for using the same
    Patent number: 5094701
    Abstract: This invention is a residue-free cleaning process for removing metal-containing contaminants from a surface of a substrate of the type used in manufacturing semi-conductor devices. The process comprises contacting the substrate with an effective amount of a cleaning agent comprising a .beta.-diketone or .beta.-ketoimine dispersed in an atmosphere capable of oxidizing the metal-contaminants at a temperature sufficient to form volatile metal-ligand complexes on the surface of the substrate. The volatile metal-ligand complexes are sublimed from the surface of the substrate leaving essentially no residue.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: March 10, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John A. T. Norman, John C. Ivankovits, David A. Roberts, David A. Bohling
  • Aqueous vinyl chloride-ethylene copolymer/polyisocyanate adhesive compositions for wood composites
    Patent number: 5092953
    Abstract: A water-based adhesive composition comprising a polyvinyl alcohol stabilized vinyl chloride-ethylene copolymer latex and 5-50 wt %, based on copolymer, of a polyisocyanate material. The adhesive composition has improved pot life and is used to prepare wood composites demonstrating improved water resistance.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: March 3, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Richard Derby, Bheema R. Vijayendran
  • Tertiary amine catalysts for polurethanes
    Patent number: 5091583
    Abstract: The invention pertains to tertiary amines used as catalysts for the preparation of polyurethane foams prepared via the catalytic reaction of a polyisocyanate with a polyol in the presence of blowing agents, etc. The tertiary amine catalysts are prepared by reacting an olefinic nitrile with aliphatic polyol having at least secondary hydroxyl functionality in a ratio less than stoichiometric for providing cyanoalkylated polyol having residual hydroxyl functionality. The resulting cyanoalkylated polyol then is reacted with a secondary amine under conditions for effective reductive alkylation.The tertiary amine catalysts, because of residual secondary hydroxyl functionality, provide for uniform dispersion within a polyurethane, formulation; they provude for additional or extended pot life in polyurethane formulations at temperature below reaction condition, and they are bound by reaction on cure.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: February 25, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jeremiah P. Casey, Richard V. C. Carr, George J. Wasilczyk, Robert G. Petrella
  • Foam saturation and release coating of a fibrous substrate
    Patent number: 5089296
    Abstract: A release coating is applied to a paper web or other woven or non-woven substrate in the form of a foam. A foamed saturant can also be applied to the paper web or other substrate followed by the application of a foamed or unfoamed release coating composition to the paper web, without an intermediate drying step between the application of the foamed saturant, and the application of the release coating.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: February 18, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Richard A. Bafford, George E. Faircloth
  • Heterocyclic diorganotin catalysts for use in polyurethane systems
    Patent number: 5089583
    Abstract: Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotins of the formula ##STR1## where R is a C.sub.1 -C.sub.8 alkyl or an aryl group.Y is --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 CH(CH.sub.3)--, --CH.sub.2 CH(OH)CH.sub.2 --, or ##STR2## and X is a linking group which may be --S-- or --O--.Also disclosed are cationic electrodepositable compositions containing such catalysts.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: February 18, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Polymeric diorganotin catalysts for use in polyurethane systems
    Patent number: 5089584
    Abstract: Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotin compositions obtained by reacting a diorganotin oxide of the formula R.sub.2 SnO or a diorganotin dichloride of the formula R.sub.2 SnCl.sub.2 with a compound of the formula HS--CH.sub.2 CH(OH)CH.sub.2 XH where R is a C.sub.1 -C.sub.8 alkyl or an aryl group and X is --O-- or --S--.Also disclosed alre cationic electrodepositable (CED) compositions containing such catalysts.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: February 18, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Hydroxyl-containing organotin catalysts for making polyurethanes
    Patent number: 5089645
    Abstract: Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxyl-containing compound are hydroxyl-containing organotins such as, for example, compounds of formulas I-III ##STR1## where R is a C.sub.1 -C.sub.8 alkyl or an aryl group;R.sup.1 is a C.sub.2 -C.sub.22 divalent hydrocarbyl group which may contain a hydroxyl substituent;X is a linking group which may be --O--, --S-- or --O.sub.2 C--;Y is a hydroxyl-containing C.sub.3 -C.sub.5 alkylene group;Y' is a C.sub.1 -C.sub.9 divalent hydrocarbyl group;Z is divalent organic linking group; andn is 0 or 1.Suitable hydroxyl-containing organotin compounds would also include polymeric organotin compounds prepared by the reaction of a diorganotin oxide or diorganotin dichloride with HSCH.sub.2 CH(OH)CH.sub.2 XH, preferably in a 1:0.5-1 molar ratio, where X is --S-- or --O--.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: February 18, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, John B. Dickenson
  • Use of helium and argon diluent gases in modification of carbon molecular sieves
    Patent number: 5086033
    Abstract: Carbon molecular sieves, useful in the separation of air into oxygen and nitrogen, are improved through modification of the micropores of the sieve by contact with the pyrolysis products of a carbon-containing compound in the gaseous state diluted with helium, with or without nitrogen as a part of the diluting gas. Volatile organic compounds, such as trimethylcyclohexane, are used with the diluent gas to narrow the micropore openings of a carbon molecular sieve and increase its kinetic selectivity for oxygen adsorption. Carbon dioxide and helium or argon in the diluent gas are used to open pores available to contacting gases.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: February 4, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John N. Armor, Thomas A. Braymer, Thomas S. Farris, Thomas R. Gaffney
  • Volatile liquid precursors for the chemical vapor deposition of copper
    Patent number: 5085731
    Abstract: Volatile liquid organometallic copper complexes are provided which are capable of selectively depositing a copper film onto metallic or other electrically conducting portions of a substrate surface under CVD conditions. These organometallic copper complexes are represented by the structural formula: ##STR1## wherein R.sup.1 and R.sup.3 are each independently C.sub.1 -C.sub.8 perfluoroalkyl, R.sup.2 is H, F or C.sub.1 -C.sub.8 perfluoroalkyl, R.sup.4 is H, C.sub.1 -C.sub.8 alkyl, or Si(R.sup.6).sub.3, each R.sup.5 is independently H or C.sub.1 --C.sub.8 alkyl and each R.sup.6 is independently phenyl or C.sub.1 -C.sub.8 alkyl. A process for depositing copper films using these organometallic copper complexes is also provided.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: February 4, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John A. T. Norman, Beth A. Muratore
  • Crosslinked vinylamine polymer in enhanced oil recovery
    Patent number: 5085787
    Abstract: The production of oil or gas from a subterranean formation is enhanced by injecting into the formation, such as in acidized fracturing, an aqueous fluid containing as a viscosifier a crosslinked vinylamine polymer. Acidizing fluids are provided containing HCl and a viscosifying amount of a gel of the crosslinked polymer, preferably poly(vinylamine) crosslinked with a diisocyanate, a polyepoxide or epichlorohydrin.
    Type: Grant
    Filed: June 20, 1990
    Date of Patent: February 4, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Robert K. Pinschmidt, Jr., Bheema R. Vijayendran, Ta-Wang Lai
  • Amine-boron adducts as reduced odor catalyst compositions for the production of polyurethanes
    Patent number: 5086081
    Abstract: An amine-boron composition for catalyzing the urethane reaction, particularly in preparing a polyurethane foam, consisting essentially of the addition product of a tertiary amine and a boron compound of the formula R.sub.n B(OH).sub.3-n wheren=0 or 1, andR=C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.8 cycloalkyl or C.sub.6 -C.sub.10 aryl.Preferred catalysts are prepared by mixing triethylenediamine with boric acid.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: February 4, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ann C. L. Savoca, Michael Louie
  • Fluorinated diazabicycloalkane derivatives
    Patent number: 5086178
    Abstract: Fluorinated diazabicycloalkane derivative of the following Formula I: ##STR1## wherein n represents 0, 1 or 2; R represents a quaternizing organic group; each R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently represents hydrogen, C.sub.1 -C.sub.6 alkyl, aryl, C.sub.1 -C.sub.6 alkyl-substituted aryl or aryl-substituted C.sub.1 -C.sub.6 alkyl and each X.sup.- independently represents a conterion or 2X.sup.- represents a single divalent counterion, are electrophilic fluorinating agents.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: February 4, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Ronald E. Banks
  • Amine functional polymers containing acetal groups
    Patent number: 5086111
    Abstract: Polyvinylaminals, optionally as the formed copolymer with polyvinylhemiaminals, and polyvinylacetals are useful as flocculants and epoxy resin and polyurethane crosslinking agents and are provided by reacting a poly(vinylamine) or a copolymer containing vinyl alcohol and vinylamine units with a monoaldehyde. The aldehyde, such as butyraldehyde, can be introduced in the polymer acetalization as a liquid or gas, generally in a proportion of about 0.02 to 0.5 mol per mol of alcohol and amine units in the polymer chain.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: February 4, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Robert K. Pinschmidt, Jr., Ta-Wang Lai