Patents Represented by Attorney Walter C. Kehm
  • Patent number: 4153578
    Abstract: This invention provides an improved Raney nickel catalyst characterized by having a molybdenum compound adsorbed thereon. The novel catalyst contains about 0.5-15 parts by weight of molybdenum adsorbed per 100 parts by weight of Raney nickel solids. Optionally, one or more additional metals may be included in the catalyst. The catalyst is particularly effective in the manufacture of high quality butanediol by hydrogenation of butynediol, and for selective hydrogenation of carbonyl groups, sometimes even in the presence of carbon-carbon unsaturation, e.g. for the conversion of furfural to furfuryl alcohol.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: May 8, 1979
    Assignee: GAF Corporation
    Inventors: Waldo R. De Thomas, Eugene V. Hort
  • Patent number: 4153446
    Abstract: Herbicidal compounds having the formula: ##STR1## where N=0-3,R is hydrogen or alkyl of 1-3 carbon atoms, andX is chloro or bromo,Are provided herein.The compounds of the invention are effective herbicides, particularly against wild grasses.
    Type: Grant
    Filed: September 15, 1978
    Date of Patent: May 8, 1979
    Assignee: GAF Corporation
    Inventors: Louis Schneider, David E. Graham
  • Patent number: 4149888
    Abstract: Photographic masks, suitable for reproduction in a photoresist layer -- by exposure of the latter to actinic light under the mask, and development of the photo-resist image -- of the pattern of a microelectronic component or device, are made by exposure to light in accordance with an original (especially by contact exposure under a primary mask) containing the pattern to be reproduced, of light-sensitive material having a flat, rigid, dimensionally stable transparent base such as glass and a thin (e.g. 0.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: April 17, 1979
    Assignee: GAF Corporation
    Inventor: Frank J. Loprest
  • Patent number: 4148944
    Abstract: A method for printing a decorative design on the surface of a vinyl material such as sheet vinyl flooring using a water based ink. The ink is a blend of acrylic and vinyl latexes and contains coalescing agent as well as surfactant and pigment.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: April 10, 1979
    Assignee: GAF Corporation
    Inventor: Truman J. Ruhf
  • Patent number: 4145221
    Abstract: Physical and photographic characteristics of silver halide emulsions containing salts of multivalent metals are improved by adding synthetic water-insoluble terpolymers of acrylic esters, glycidyl acrylates and acrylamides as emulsion additives. The crosslinkable terpolymers are highly compatible with silver halide emulsions containing multivalent metal salts when an acrylamide is a polymer component at less than 15 wt% and an anionic sulfate surfactant of the formula ##STR1## where R.sub.5 is a straight or branch-chain alkyl group of C.sub.4 -C.sub.12, R.sub.6 is a straight of branch-chain alkyl group of C.sub.8 -C.sub.20, n is an integer of 8 to 40, and M.sup.+ is an ammonium ion or, a monovalent metal ion such as potassium, sodium or cesium, is the dispersing agent during emulsion polymerization.
    Type: Grant
    Filed: November 8, 1977
    Date of Patent: March 20, 1979
    Assignee: GAF Corporation
    Inventors: Jui-Chang Chuang, Donald E. Trucker
  • Patent number: 4145127
    Abstract: A modular film transport and control mechanism for selectively advancing either regular 8mm or super 8mm perforated motion picture film through a projection gate is provided. The module comprises a film transport shuttle having a film engaging claw biased for engagement with the perforations of the film, a rotatable drive cam in operative engagement with the shuttle to reciprocally move the claw along horizontal and vertical paths to advance the film through the projection gate, and a pivotally mounted projection mode shifter interposed between the shuttle and the cam to transmit the desired horizontal motion from the cam to the shuttle, and selectively movable between at least two positions along a surface of the cam to change the mode of operation from normal projection to still projection. A control linkage connected to the shifter permits manual selection of the desired operating mode. The module also comprises a rotatable shutter mounted on a common shaft with the shuttle drive cam.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: March 20, 1979
    Assignee: GAF Corporation
    Inventors: Donald I. Loofbourow, Robert E. Lach
  • Patent number: 4142014
    Abstract: Metal salts of hydrolyzed long chain alkyl vinyl ether-maleic anhydride copolymers and thermally resistant release coating compositions comprising solutions or emulsions of said salts.
    Type: Grant
    Filed: April 6, 1973
    Date of Patent: February 27, 1979
    Assignee: GAF Corporation
    Inventor: Thomas S. Mestetsky
  • Patent number: 4140670
    Abstract: Molding compositon and molded products comprising polybutylene terephthalate containing thermally stable reinforcing fibers, such as glass fibers, mica and between about 5 and about 40 wt. % based on total weight of PBT molding composition of poly (butylene terephthalate-co-tetramethylene oxide). In a preferred embodiment, the composition also includes amorphous, thermally stable resins such as polymethyl methacrylate.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: February 20, 1979
    Assignee: GAF Corporation
    Inventors: John J. Charles, Robert C. Gasman
  • Patent number: 4137226
    Abstract: A novel triazene compound which upon thermal or photochemical decomposition provides free radicals for polymer initiation and methods using same.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: January 30, 1979
    Assignee: GAF Corporation
    Inventors: Lee D. Brodsky, Mark L. Moskowitz, Ralph G. D. Moore
  • Patent number: 4135803
    Abstract: An apparatus for developing high resolution photosensitive diazo plates by exposure to ammonia vapor is provided.
    Type: Grant
    Filed: March 29, 1977
    Date of Patent: January 23, 1979
    Assignee: GAF Corporation
    Inventor: Hendrik Van Houwelingen
  • Patent number: 4135007
    Abstract: A radiation curable coating comprising;A. an oligomer of Formula I: ##STR1## wherein: R.sup.1 is hydrogen or methyl;Y is a divalent urethane residue;B. a benzylidene acid ester of Formula IV: ##STR2## wherein R.sup.4 is independently alkyl or hydroxy alkylene. Preferably the coating composition contains a vinyl monomer copolymerizable with the oligomer. The process for curing the coating is also disclosed.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: January 16, 1979
    Assignee: GAF Corporation
    Inventors: Donald H. Lorenz, Shu T. Tu, Donald P. Wyman
  • Patent number: 4132774
    Abstract: A novel sun tanning composition, method of making same and method of controlling sunburn comprising application to the skin of a cosmetic carrier containing the novel mixture of ethyl esters of N-monoalkylamino and N,N-dialkylamino benzoic acid wherein the alkyl groups are methyl or ethyl and the amino and ester groups are in para relationship on the benzene ring.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: January 2, 1979
    Assignee: GAF Corporation
    Inventor: Albert F. Strobel
  • Patent number: 4132549
    Abstract: A photo-induced thermally degradable imaging system comprising a continuous, water-insoluble film of a peroxide copolymer of oxygen and a vinyl aromatic monomer having the structural formula: ##STR1## WHEREIN R.sub.1 can be hydrogen or an alkyl group containing from 1 to 4 carbon atoms, R.sub.2 is hydrogen, an alkyl group containing from 1 to 4 carbon atoms, an aryl group containing from 6 to 12 carbon atoms or a halogen atom and b is an integer from 1 to 2, on a substrate.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: January 2, 1979
    Assignee: GAF Corporation
    Inventors: Frank J. Loprest, Eugene F. McInerney
  • Patent number: 4131455
    Abstract: Method for recovering pure silver from acid insoluble silver salt contaminated with other metals by first washing the salt with water at a pH less than 3 and then reacting the washed salt with alkali metal borohydride at a pH greater than 12.
    Type: Grant
    Filed: December 9, 1977
    Date of Patent: December 26, 1978
    Assignee: GAF Corporation
    Inventors: Lars T. Edwards, Lyle N. Trowbridge
  • Patent number: 4129739
    Abstract: The amidine compounds of the invention have the general formula: ##STR1## where R.sub.2 is lower alkyl,R is phenyl substituted with halo and nitro, andR.sub.3 is selected from phenyl and phenyl substituted with one or more of halo, nitro and alkoxy, and combinations thereof which may be utilized advantageously as intermediates in the manufacture of particularly useful, high quality pyrazolone color formers which have proven especially difficult to make in high yields by other methods or techniques known in the art.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: December 12, 1978
    Assignee: GAF Corporation
    Inventors: David J. Tracy, Walter F. Hoffstadt
  • Patent number: 4129667
    Abstract: A radiation curable coating comprising;A. an oligomer of Formula I: ##STR1## wherein: R.sup.1 is hydrogen or methyl;Y is a divalent urethane residue;B. an acrylic ultra-violet light absorber of Formula IV: ##STR2## wherein R.sup.4 is alkyl or hydroxy alkylene. Preferably the coating composition contains a vinyl monomer copolymerizable with the oligomer. The process for curing the coating is also disclosed.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: December 12, 1978
    Assignee: GAF Corporation
    Inventors: Donald H. Lorenz, Shu-Tung Tu, Donald P. Wyman
  • Patent number: 4129521
    Abstract: This invention relates to a stabilization composition, particularly adapted to prevent deterioration resulting from exposure to heat and light in polymeric materials, paints and dyes consisting essentially of a normally liquid, branched chain nonyl, or dodecyl isomeric mixture of 2-(5'-nonyl, or -dodecyl-2'-hydroxy-phenyl) benzotriazole; to the method of preparing said stabilization composition and to the stabilized products having between about 0.05 and about 15 weight percent of said stabilization composition incorporated therein.
    Type: Grant
    Filed: September 28, 1976
    Date of Patent: December 12, 1978
    Assignee: GAF Corporation
    Inventor: Albert F. Strobel
  • Patent number: 4129709
    Abstract: A coating composition comprising;A. an oligomer of Formula I: ##STR1## wherein: R.sup.1 is hydrogen or methyl;R.sup.2 is lower alkylene;R.sup.3 is aliphatic or cycloaliphatic;X is --O-- or --NH--;n is an integer from 2 to 50 inclusive;B. n-vinyl-2-pyrrolidone;C. an acrylic acid ester having a boiling point of at least 200.degree. C at 760 mm Hg.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: December 12, 1978
    Assignee: GAF Corporation
    Inventors: Donald H. Lorenz, Shu-Tung Tu
  • Patent number: 4128536
    Abstract: A novel ultra-violet absorber comprising a cyano-oligomer of Formula I of FIG. 1 of the drawings wherein (Ar).sub.1, (Ar).sub.2, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and Y are organic radicals is given. A radiation curable coating composition with the novel cyano-oligomer, urethane oligomers and vinyl monomers is also given. A process for curing the coating is also disclosed.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: December 5, 1978
    Assignee: GAF Corporation
    Inventors: Lee Brodsky, Donald H. Lorenz, Suzanne B. Nelsen, Shu T. Tu
  • Patent number: 4128633
    Abstract: In accordance with the present invention, there is provided herein an in situ process for making stable PVP-iodine complex having a high level of iodine power. The process of this invention is carried out by adding a predetermined amount of free water to a PVP suspension, and admixing iodine therewith to form the desired solid complex. The PVP suspension may be obtained by suspension polymerization of N-vinylpyrrolidone (VP) in a suitable solvent, and used directly for succeeding steps of the process.
    Type: Grant
    Filed: April 27, 1977
    Date of Patent: December 5, 1978
    Assignee: GAF Corporation
    Inventors: Donald H. Lorenz, Earl P. Williams