Patents Represented by Attorney Michael Leach
  • Patent number: 5356942
    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 formulaR.sub.n B(OH).sub.3-nwheren=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 or 3-quinuclidinol with boric acid.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: October 18, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ann C. L. Savoca, Michael Louie, Mark L. Listemann
  • Patent number: 5356539
    Abstract: A process for removing nitroaromatic and nitrophenolic compounds from an alkaline wastewater stream generated in a process for the nitration of aromatic compounds by the mixed acid technique, which comprises(a) adjusting the pH of the aqueous alkaline waste stream containing nitroaromatic and nitrophenolic compounds to a range from about 2 to 4.5,(b) contacting the acidic aqueous stream with sufficient hydrogen peroxide and ferrous ion under conditions to effect oxidation of the nitrophenolic compounds,(c) adjusting the acidic, oxidized aqueous waste stream having a reduced nitrophenolic content to about pH .gtoreq.4, and(d) contacting the aqueous waste stream with a carbon adsorbent.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: October 18, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Steven B. Peter, Keith B. Adams, Baldomero Casas, John E. Sawicki
  • Patent number: 5349000
    Abstract: In a melt extrudable polyvinyl alcohol composition consisting essentially of polyvinyl alcohol and plasticizer, which has been made melt extrudable by adding sufficient energy to the polyvinyl alcohol to both melt and substantially eliminate the crystallinity in the melt while simultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol, the improvement which comprises 5 to 25 wt % poly(butylene terephthalate)-polytetrahydrofuran block copolymer for improved impact resistance.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: September 20, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lloyd M. Robeson, Jeffrey A. Kuphal, Amir Famili
  • Patent number: 5349009
    Abstract: A water-based construction adhesive composition containing an aqueous emulsion polymer binder which comprises a blend, based on 100 weight parts of polymer solids, of 25 to 75 parts aqueous emulsion vinyl acetate/-ethylene copolymer and 75 to 25 parts aqueous emulsion vinyl acetate homopolymer.
    Type: Grant
    Filed: December 8, 1992
    Date of Patent: September 20, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Wayne R. Furlan
  • Patent number: 5326809
    Abstract: A method for preparing aqueous polymer emulsions in the presence of a poly[(vinyl alcohol)-co-(vinyl amine)] copolymer as a protective colloid and aqueous polymer emulsions containing a poly[(vinyl alcohol)-co-(vinyl amine)] copolymer.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: July 5, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Richard H. Bott, William E. Lenney, Keith D. Campbell, Jeffrey A. Kuphal, Chung-Ling Mao
  • Patent number: 5324759
    Abstract: In an active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane, polyurethaneurea or polyurea elastomer by reaction injection molding, the improvement which comprises a mold release composition consisting essentially of (1) the reaction product of a mixture of a phenol compound, a tertiary amine, and a reactive epoxide and (2) a carboxy functional siloxane.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: June 28, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventor: John E. Dewhurst
  • Patent number: 5322940
    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 formulaR.sub.n B(OH).sub.3-nwheren=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: June 11, 1992
    Date of Patent: June 21, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ann C. L. Savoca, Michael Louie
  • Patent number: 5317075
    Abstract: In an active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane or polyurethane/urea elastomer by reaction injected molding, the improvement which comprises a mold release composition which is the reaction product of a C.sub.12 -C.sub.36 fatty acid, a tertiary amine having at least one C.sub.12 -C.sub.18 alkyl substituent and a C.sub.2 -C.sub.21 reactive epoxide.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: May 31, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John E. Dewhurst, Ronald M. Pearlstein, Thomas W. Panunto, Reinaldo M. Machado
  • Patent number: 5312845
    Abstract: In an active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane or polyurethaneurea elastomer by reaction injection molding, the improvement which comprises a mold release composition consisting essentially of (1) the reaction product of a mixture of a carboxylic acid, a tertiary amine, and a reactive epoxide and (2) a carboxy functional siloxane.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: May 17, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventor: John E. Dewhurst
  • Patent number: 5308880
    Abstract: An active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane, polyurethaneurea and/or polyurea elastomer by reaction injection molding, which B-side composition comprises an acidic mold release composition, diethyltoluenediamine chain extender and, as a catalyst, a diorganotin dicarboxylate in which the carboxylate contains at least one alpha halogen atom.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: May 3, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John E. Dewhurst, James D. Nichols, Ann C. L. Savoca
  • Patent number: 5300530
    Abstract: A process for converting polyurethane foam into reusable polyol composition which comprises glycolyzing the polyurethane foam to yield a glycolysis polyol product containing amines and reacting the glycolysis polyol product with an alkylene oxide in a mole ratio of <1 mole of alkylene oxide per mole of active amine hydrogen atom in the glycolysis polyol product.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: April 5, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Reinaldo M. Machado, Brian E. Farrell
  • Patent number: 5300566
    Abstract: Vinyl acetate and an N-vinyl formamide are copolymerized to yield poly(vinyl acetate)-co-poly(N-vinyl formamide) which is base hydrolyzed to poly(vinyl alcohol)-co-poly(N-vinyl formamide). Two phase hydrolysis of particles of poly(vinyl alcohol)-co-poly(N-vinyl formamide) as a slurry in methanol yields particles of poly(vinyl alcohol)-co-poly(vinylamine).provided is a copolymer of the following general formula ##STR1## where m is 0 to 15 mole %. n is 50 to 99 mole %.x is 0 to 30 mole %. andy is 1 to 50 mole % .
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: April 5, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Robert K. Pinschmidt, Jr., Ta-Wang Lai
  • Patent number: 5298060
    Abstract: A method for preventing or reducing the marine life buildup on a submerged surface by applying to the surface an antifouling coating composition comprising a combination of a silicone fluid and a silicone resin.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: March 29, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark E. Harakal, Dieter R. Nollen
  • Patent number: 5288864
    Abstract: A method for preparing a polyurethane foam which comprises reacting an organic polyisocyanate and a polyol in the presence of a blowing agent, cell stabilizer and a catalyst composition which comprises a quaternary ammonium carboxylate inner salt having the following formula I ##STR1## where R.sub.1 -R.sub.3 are independently C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.8 cycloalkyl or a heterocycle, C.sub.6 -C.sub.10 aryl or heteroaromatic. R.sub.1 and R.sub.2 or R.sub.1 -R.sub.3 together with the nitrogen atom can also be part of nitrogen containing ring system such as piperidine, morpholine, triethylenediamine, imidazole, or 1,8-diazabicyclo-[5.4.0]undec-7-ene. R.sub.4 is a divalent R.sub.1.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: February 22, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James D. Nichols, Ann C. L. Savoca, Mark L. Listemann
  • Patent number: 5276084
    Abstract: A pressure sensitive adhesive composition comprising an aqueous emulsion of a copolymer consisting essentially of(a) 10-40 wt % vinyl acetate,(b) 5-30 wt % ethylene,(c) 5-50 wt % alkyl acrylate,(d) 5-40 wt % dialkyl maleate or fumarate,(e) 1-5 wt % hydroxyalkyl (meth)acrylate,(f) 0.1-1 wt % (meth)acrylamide, and(g) 1-5 wt % alpha,beta ethylenically unsaturated carboxylic acid.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: January 4, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Tze-Chiang Cheng, Chung-Ling Mao
  • Patent number: 5264467
    Abstract: An aqueous contact adhesive composition consisting essentially ofa) an aqueous emulsion containing an adhesive polymer,b) 0-50 wt % plasticizer, based on polymer solids,c) 0.5-10 wt % thermoplastic hollow microspheres, based on polymer solids, andd) 0-4.5 wt % polyethylenimine, based on polymer solids,the adhesive composition demonstrating less than one pound per linear inch adhesion to stainless steel by PSTC-1 method.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: November 23, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Frank V. DiStefano
  • Patent number: 5256417
    Abstract: A packaged towelette composed of a sheet of nonwoven fibers impregnated with a binder which is a polyvinyl alcohol or an aqueous polymer emulsion containing polyvinyl alcohol as the protective colloid, the sheet being maintained in a wet condition within the package by contact with a nonaqueous lotion composition which is a liquid organic compound that is a nonsolvent for polyvinyl alcohol.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: October 26, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Bernard M. Koltisko
  • Patent number: 5256704
    Abstract: The invention relates to reaction injection molded elastomers derived from high molecular weight polyether polyols, an aromatic diamine chain extender, a polyisocyanate and a hydroxyl-containing organotin catalyst. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: October 26, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John E. Dewhurst, James D. Nichols
  • Patent number: 5252332
    Abstract: A packaged towelette comprising a sheet of nonwoven fibers impregnated with a polyvinyl alcohol containing binder and in contact with an aqueous solution containing borate ions and bicarbonate ions.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: October 12, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Joel E. Goldstein
  • Patent number: 5252622
    Abstract: An aqueous contact adhesive composition comprising an aqueous adhesive copolymer emulsion, the adhesive composition having a durometer hardness measured on the type A scale by ASTM D2240 of at least 20, and a blowing agent. The aqueous contact adhesive composition is applied as a coating to a surface of each of two substrates, then foamed, and substantially dried to provide a dry cellular adhesive coating. The adhesive-coated surfaces are then joined. The preferred contact adhesive composition comprises a vinyl acetate/ethylene/N-methylolacrylamide copolymer emulsion.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: October 12, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Frank V. DiStefano