Patents Represented by Attorney Douglas N. Deline

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  • Composition and method for purging polymeric residues
    Patent number: 4731126
    Abstract: Compositions comprising thermoplastic polymers having added thereto small amounts of a hydroxymethyl-substituted carboxylic acid are usefully employed to remove accumulated polymeric residues from polymer processing equipment.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: March 15, 1988
    Assignee: The Dow Chemical Company
    Inventors: Thuan P. Dixit, David V. Dellar
  • Weatherable three layer films
    Patent number: 4724186
    Abstract: A flexible weather resistant film particularly adapted for use as a weatherable surface coating by lamination to a substrate comprising a weather resistant layer of a blend of a vinyl chloride polymer, an interpolymer of ethylene and at least one carboxylic acid or ester thereof containing ethylenic unsaturation, and chlorinated polyethylene, an adhesive layer for adhesion of the film to a substrate comprising an interpolymer of ethylene and acrylic or methacrylic acid and interposed between the weatherable layer and the adhesive layer, an interlayer comprising a copolymer of ethylene and vinyl acetate.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: February 9, 1988
    Assignee: The Dow Chemical Company
    Inventor: Robert H. Kelch
  • Uniformly coated polymeric composition
    Patent number: 4704330
    Abstract: A particulated thermoplastic polymer having a uniform surface coating of zinc stearate is prepared by contacting the polymer particles with atomized droplets of molten zinc stearate while supporting and conveying the polymer by a moving stream of a gas. Reduced frictional forces allow increased volumes of coated particles to be transported by pneumatic conveyance. Substantially reduced fine particulate generation or "dusting" is observed for the composition.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: November 3, 1987
    Assignee: The Dow Chemical Company
    Inventors: Eugene R. Moore, Jon T. Goodman
  • Blends of polypropylene and vinylaromatic/.alpha.-methylstyrene copolymers
    Patent number: 4704431
    Abstract: A polymer resin comprising a blend of polypropylene, a copolymer of a vinylaromatic monomer and .alpha.-methylstyrene prepared by anionic polymerization at a temperature above 61.degree. C. and a monovinylidene aromatic polymer grafted .alpha.-olefin copolymer compatibilizing agent.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: November 3, 1987
    Assignee: The Dow Chemical Company
    Inventors: Van I. W. Stuart, Duane B. Priddy
  • Weatherable coextruded flexible films and laminated structure
    Patent number: 4680234
    Abstract: A flexible weather resistant film comprising a weather resistant layer of a blend of a vinyl chloride polymer and chlorinated polyethylene and a second layer comprising a normally solid thermoplastic adhesive. Improved performance is obtained when the first layer additionally comprises an interpolymer of ethylene and at least one carboxylic acid or ester thereof containing ethylenic unsaturation.
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: July 14, 1987
    Assignee: The Dow Chemical Company
    Inventor: Robert H. Kelch
  • Oxidation stabilization of thermoplastic foams
    Patent number: 4666950
    Abstract: Thermoplastic resinous foams having improved resistance to oxidation are provided by the incorporation into such foams of a polyvinyl ether of a C.sub.6-30 alcohol.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: May 19, 1987
    Assignee: The Dow Chemical Company
    Inventor: Robert H. Miller
  • Production of phenols and catalyst therefor
    Patent number: 4620043
    Abstract: Multicomponent catalysts comprising copper, a metal selected from the group consisting of vanadium, chromium, manganese, iron, cobalt, nickel and zinc; and phosphate are employed for oxidizing an aromatic carboxylic acid to the corresponding phenol, e.g., benzoic acid to phenol.
    Type: Grant
    Filed: October 17, 1985
    Date of Patent: October 28, 1986
    Assignee: The Dow Chemical Company
    Inventors: Chiu T. Lam, David M. Shannon
  • Modification of polymers
    Patent number: 4613653
    Abstract: Polymers modified by reaction with thiocyano or isothiocyano generating reactants provide improved adhesive strength to laminates prepared therefrom, improved paint adhesion, increased viscosity and alterated gas permeability compared to unmodified polymers.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: September 23, 1986
    Assignee: The Dow Chemical Company
    Inventors: John D. Kitchens, Leo R. Novak
  • Esterification of aromatic dicarboxylic acids with cyclic alkylene carbonates
    Patent number: 4613678
    Abstract: Esterification of aromatic dicarboxylic acids with cyclic alkylene carbonates in the presence of organic compounds containing at least one six-membered aromatic nitrogen-containing heterocyclic moiety.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: September 23, 1986
    Assignee: The Dow Chemical Company
    Inventor: Daniel J. Swart
  • Acyl derivatives of tris-hydroxy-ethyl-perhydro-1,3,5-triazine
    Patent number: 4605737
    Abstract: Fatty acid ester derivatives of 1,3,5-tris(2-hydroxyalkyl)perhydro-s-triazine or mixed ester/ether derivatives thereof are corrosion inhibitors for acid-containing fluids. The compounds are also useful as emulsifiers, lubricants and hydraulic fluids.
    Type: Grant
    Filed: April 23, 1984
    Date of Patent: August 12, 1986
    Assignee: The Dow Chemical Company
    Inventor: Andrew T. Au
  • Impact-modified monovinylidene aromatic polymer injection molding resins
    Patent number: 4594391
    Abstract: Impact-modified monovinylidene aromatic polymer compositions are prepared having a specified broad molecular weight distribution. The resins prepared from these resins have been found to produce improved injection molded articles in that flow lines are reduced.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: June 10, 1986
    Assignee: The Dow Chemical Company
    Inventor: Mary A. Jones
  • Preparation of allylic compounds
    Patent number: 4590300
    Abstract: Allyl methyl ethers are transetherified with alcohols by use of a catalyst of a solid acid that contains no mercury or cuprous salt catalyst.
    Type: Grant
    Filed: January 9, 1985
    Date of Patent: May 20, 1986
    Assignee: The Dow Chemical Company
    Inventors: Michael J. Mullins, Percy J. Hamlin
  • Monovinylidene aromatic polymer resins having added amounts of high molecular weight polymer
    Patent number: 4585825
    Abstract: Monovinylidene aromatic polymer compositions which have good combinations of strength, heat resistance and melt flow properties, are produced by, in effect, adding minor amounts of high molecular weight monovinylidene aromatic polymers to major amounts of intermediate molecular weight polymers. These compositions can be advantageously produced by feeding previously polymerized high molecular weight polymer, dissolved in monomer, into a polymerization zone or reactor wherein the intermediate molecular weight polymer is produced in the presence of the high molecular weight polymer.
    Type: Grant
    Filed: March 8, 1985
    Date of Patent: April 29, 1986
    Assignee: The Dow Chemical Company
    Inventor: Mark A. Wesselmann
  • Sulfonated lithium cation exchanged polystyrene photographic films
    Patent number: 4579814
    Abstract: Photographic films comprising a base film of oriented polystyrene at least one surface of which is highly sulfonated and lithium cation exchanged.
    Type: Grant
    Filed: December 5, 1984
    Date of Patent: April 1, 1986
    Assignee: The Dow Chemical Company
    Inventor: Kevin J. Ryan
  • Additives for nonaqueous liquids
    Patent number: 4573488
    Abstract: Homopolymers and copolymers of butylene oxide having a molecular weight of at least about 1 million are employed as drag reducing agents in nonaqueous liquids.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: March 4, 1986
    Assignee: The Dow Chemical Company
    Inventors: Donna B. Carville, Edwin R. Feig, Gene D. Rose, Mary H. Pulliam
  • Production of phenols and catalyst therefor
    Patent number: 4567157
    Abstract: Multicomponent catalysts comprising copper, a metal selected from the group consisting of vanadium, chromium, manganese, iron, cobalt, nickel and zinc; and phosphate are employed for oxidizing an aromatic carboxylic acid to the corresponding phenol, e.g., benzoic acid to phenol.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: January 28, 1986
    Assignee: The Dow Chemical Company
    Inventors: Chiu T. Lam, David M. Shannon
  • Modification of polymer surfaces
    Patent number: 4567241
    Abstract: Solid polymers having thiocyanate or isothiocyanate functionality added to reactive unsaturation thereof provide improved adhesive strength to laminates prepared therefrom, improved paint adhesion and other properties.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: January 28, 1986
    Assignee: The Dow Chemical Company
    Inventors: John D. Kitchens, Leo R. Novak
  • Preparation of carbamates
    Patent number: 4554372
    Abstract: 2-Substituted alkyl (2-substituted alkyl)carbamates useful as intermediates in the preparation of epoxy derivatives of olefins are prepared by reacting 2-oxazolidones with an olefin and an electrophile such as halogen.
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: November 19, 1985
    Assignee: The Dow Chemical Company
    Inventors: James M. Renga, Roy A. Periana-Pillai, Kevin A. Frazier
  • Olefin polymer barrier films and methods for use thereof
    Patent number: 4538531
    Abstract: Olefin polymer films are produced comprising amounts of one or more permeability reducing fatty acid derivative compounds. The resultant films have improved barrier abilities as evidenced by reduced methyl bromide diffusion rates. The films are very suitably employed as soil fumigation tarpaulins or soil covering materials. Improved methods for confining chemical treatment agents are also taught.
    Type: Grant
    Filed: July 27, 1983
    Date of Patent: September 3, 1985
    Assignee: The Dow Chemical Company
    Inventor: Nang C. Wong
  • Polymers of ferrocene
    Patent number: 4536589
    Abstract: Novel linear polymers of ferrocene are prepared by the reaction of 1,1'-dilithioferrocene with controlled amounts of a dihaloorganylphosphine, arsine or stibine. The polymers form stable complexes with Group VIII metals which are useful as recoverable hydroformylation catalysts.
    Type: Grant
    Filed: November 9, 1981
    Date of Patent: August 20, 1985
    Assignee: The Dow Chemical Company
    Inventors: Jere D. Fellmann, Philip E. Garrou, Howard P. Withers, Jr., Dietmar Seyferth