Patents by Inventor Rostyslaw Dowbenko

Rostyslaw Dowbenko has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4327008
    Abstract: Rheology modifiers useful in water-based and organic solvent-based compositions are derived from the reaction of polyalkylene oxide, polyfunctional material, diisocyanate, water and a monofunctional active hydrogen-containing compound or monoisocyanate. The modifiers are characterized by having a branched structure, urea linkages and terminal hydrophobic groups.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: April 27, 1982
    Assignee: PPG Industries, Inc.
    Inventors: Karl F. Schimmel, Jerome A. Seiner, Roger M. Christenson, Rostyslaw Dowbenko
  • Patent number: 4298511
    Abstract: Rheology modifiers useful in water-and organic solvent-based compositions are derived from the reaction of polyalkylene oxide, polyfunctional material, diisocyanate and water. The modifiers are characterized by having a branched structure and containing substantially no terminal hydrophobic groups.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: November 3, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Karl F. Schimmel, Jerome A. Seiner, Rostyslaw Dowbenko, Roger M. Christenson
  • Patent number: 4285849
    Abstract: Ungelled amidation reaction products of a polycarboxyl-containing material and a polyamine having at least one ether group are produced. The ungelled products can be mixed with a crosslinking resin to provide a coating composition having good durability and stain-resistance.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: August 25, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Rostyslaw Dowbenko, Karl F. Schimmel, Jerome A. Seiner
  • Patent number: 4284776
    Abstract: Radiation polymerizable acrylyloxy-containing reaction products are provided from Michael addition reaction of an amide acrylate material with a primary or secondary amine. The resulting amine adducts of the amide acrylate compounds possess high cure rates in air.
    Type: Grant
    Filed: December 9, 1977
    Date of Patent: August 18, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Gerald W. Gruber, Charles B. Friedlander, William H. McDonald, Rostyslaw Dowbenko
  • Patent number: 4252935
    Abstract: Esters of glycidyl polyethers of saturated phenols are especially useful in coating compositions having a low organic solvent content. The esters are the reaction products of from about 0.5 to about 1.5 equivalents of a saturated monocarboxylic acid with each epoxy group in a diglycidyl polyether of phenols where the aromatic rings of the phenols are saturated.
    Type: Grant
    Filed: July 31, 1979
    Date of Patent: February 24, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Carl C. Anderson, William J. Birkmeyer, Roger M. Christenson, Rostyslaw Dowbenko, Ronald J. Lewarchik
  • Patent number: 4227979
    Abstract: Radiation-curable coating compositions are disclosed which contain one or more amide acrylate compounds of the general formula: ##STR1## wherein X, Y and Z may each independently be H, alkyl, aryl, acrylyloxyalkyl, acrylyloxy aliphatic ester or acrylyloxy aliphatic ether, provided that X, Y and Z together have two, three or four acrylyloxy groups. The compositions are highly radiation-sensitive and very fast curing and form mar-resistant protective and decorative film coatings which are particularly useful as UV-cured overprint varnishes.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: October 14, 1980
    Assignee: PPG Industries, Inc.
    Inventors: Byron M. Humke, Gerald W. Gruber, Rostyslaw Dowbenko, Charles B. Friedlander
  • Patent number: 4206104
    Abstract: Resin mixtures of N,N'-dihydroxyalkyl ester substituted imidazolidinediones are especially useful in coating compositions having a low organic solvent content. The substituted imidazolidinediones have the formula ##STR1## wherein R and R' are independently hydrogen or hydrocarbon groups having from 1 to 8 carbon atoms, X is ##STR2## where the R" groups are independently hydrocarbon groups having from 1 to 17 carbon atoms.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: June 3, 1980
    Assignee: PPG Industries, Inc.
    Inventors: Rostyslaw Dowbenko, Ronald J. Lewarchik, William J. Birkmeyer
  • Patent number: 4202926
    Abstract: Microporous films are charged with selected polymer curing agents and brought into contact with a curable material to thereby crosslink it. Specific curable materials useful both for the microporous film and the curable polymer include epoxy resins which form strong adhesive bonding systems in various environments.
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: May 13, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Rostyslaw Dowbenko
  • Patent number: 4171413
    Abstract: Non-gelled acrylic-hydrazide resins are prepared by reacting hydrazine with a non-gelled acrylic polymer containing a functional group reactive with hydrazine to cause hydrazide formation.
    Type: Grant
    Filed: August 4, 1977
    Date of Patent: October 16, 1979
    Assignee: PPG Industries, Inc.
    Inventors: Marvis E. Hartman, Rostyslaw Dowbenko, Thomas R. Hockswender
  • Patent number: 4153776
    Abstract: Radiation curable compounds are disclosed comprising an amide moiety, a urethane moiety and an ethylenically unsaturated functional group, typically an acrylate functional group. The compounds comprise the reaction products of an amide-containing compound having at least one hydroxy functional group, a polyisocyanate and a polyfunctional compound having a hydroxy functional group reactive with an isocyanato group of the polyisocyanate, which polyfunctional compound provides an ethylenic functional group in the reaction product. Coating compositions containing these radiation curable reaction products cure at relatively high rates to form films having high abrasion resistance and improved tensile strength and elongation properties as compared to conventional urethane acrylate coating compositions.
    Type: Grant
    Filed: March 28, 1978
    Date of Patent: May 8, 1979
    Assignee: PPG Industries, Inc.
    Inventors: Charles B. Friedlander, Gerald W. Gruber, Rostyslaw Dowbenko
  • Patent number: 4129489
    Abstract: A novel method of preparing polymer based powder coating compositions involves as a first step the preparation of a mixture containing one or more ethylenically unsaturated monomers which are polymerizable by ionizing radiation, and optionally other coating composition additives. Optional additives which may be incorporated in the mixture include pigments, internal or external crosslinkers, chain transfer agents, flow promoters, plasticizers, viscosity control agents, minor proportions of resins, and the like. Pigments are especially desirable additives. The next step in the process is to apply a coating of the mixture to a substrate. Then, the coated substrate is subjected to ionizing radiation to polymerize the ethylenically unsaturated monomers and thereby form a solid film. Finally, the film is broken into particles by any of several mechanical means to form a polymer based powder coating composition which when applied to a substrate and baked, fuses to produce a film.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: December 12, 1978
    Assignee: PPG Industries, Inc.
    Inventors: Roger M. Christenson, Rostyslaw Dowbenko, Joseph M. Makhlouf
  • Patent number: 4093673
    Abstract: Resinous compositions useful as coating compositions comprise blends of hydroxyfunctional polymers; organoalkoxy silane crosslinking agents represented by the formula:R.sub.n Si(OR').sub.4-nwherein R is an aryl, alkaryl, aralkyl, alkyl having 1 to 8 carbon atoms, XR .sub.4 --or ##STR1## RADICAL, WHEREIN R.sub.1 is hydrogen or an alkyl radical of 1 to 6 carbon atoms, R.sub.2 is a member selected from the group consisting of alkylene radicals of 1 to 7 carbon atoms and carbonyloxy radicals represented by the formula: ##STR2## wherein R.sub.3 is an alkylene radical of 1 to 6 carbon atoms, wherein R.sub.4 is an alkylene radical of 1 to 6 carbon atoms, a cycloalkylene radical, or an arylene radical and X is a functional group selected from the group consisting of --OH, --SH, ##STR3## halogen, NH.sub.2 --, ##STR4## and NH.sub.2 --CH.sub.2 --CH.sub.2 --NH--, and wherein R' is methyl, ethyl, 2-methoxyethoxy, 2-ethoxyethoxy, m is 0 or 1 and n is 0, 1 or 2; and cure accelerating catalysts.
    Type: Grant
    Filed: November 14, 1974
    Date of Patent: June 6, 1978
    Assignee: PPG Industries, Inc.
    Inventors: Wen-Hsuan Chang, Rostyslaw Dowbenko, Marvis E. Hartman, Samuel Porter, Jr.
  • Patent number: 4055607
    Abstract: Insoluble microgel particles are added to solutions of polymerized ethylenically unsaturated monomers containing hydroxyl groups. The solutions may be spray coated onto various substrates in two coat applications to form coatings having improved gloss, film build and pattern control. The coatings are especially useful as automotive finishes.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: October 25, 1977
    Assignee: PPG Industries, Inc.
    Inventors: Thomas R. Sullivan, Roger M. Christenson, Suryya K. Das, Rostyslaw Dowbenko
  • Patent number: 4031290
    Abstract: Block copolymers can be prepared by reacting a polyester resin or a polyol with a hydroxyl or carboxyl functional mercaptan and subsequently reacting the mercapto-blocked polyester or polyol in the presence of peroxygen-type or azo-type catalyst, with selected alpha, beta-ethylenically unsaturated monomer(s), such as diacetone acrylamide, acrylic acid, methacrylic acid, ethyl acrylate, butyl acrylate, styrene, methyl methacrylate, methacrylonitrile and the like. Such block copolymers provide for coating compositions having physical properties which provide for useful protective and decorative films.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: June 21, 1977
    Assignee: PPG Industries, Inc.
    Inventors: Carl Clement Anderson, Rostyslaw Dowbenko
  • Patent number: 4031051
    Abstract: Coating compositions applicable by conventional coating techniques as well as by electrodeposition are provided by reacting an epoxy-containing organic material with a compound containing at least one phenolic hydroxyl group and a group hydrolyzable to a carboxyl group. Examples of such hydrolyzable groups include ester groups, amide groups and nitrile groups. Compounds include esters of benzoic, salicylic and diphenolic acids, and phenolphthalein. The resultant product may then be hydrolyzed and solubilized, using any of the known hydrolyzing agents, e.g., aqueous potassium hydroxide, aqueous sodium hydroxide and aqueous solutions of the various amines used in the art.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: June 21, 1977
    Assignee: PPG Industries, Inc.
    Inventors: Rostyslaw Dowbenko, Joseph R. Marchetti
  • Patent number: 4029621
    Abstract: Aqueous coating compositions which may be applied by conventional coating techniques as well as by electrodeposition are provided by reacting an epoxy-containing organic material with a compound containing a mercaptan group and at least one group hydrolyzable to a carboxyl group. Examples of such hydrolyzable groups include ester groups, amide groups and nitrile groups. The resultant product is then hydrolyzed and solubilized using hydrolyzing agents such as aqueous alkali metal hydroxides and aqueous solutions of various amines.
    Type: Grant
    Filed: April 28, 1976
    Date of Patent: June 14, 1977
    Assignee: PPG Industries, Inc.
    Inventors: Marvis E. Hartman, Thomas R. Hockswender, Rostyslaw Dowbenko, Roger M. Christenson
  • Patent number: 4016332
    Abstract: Block copolymers can be prepared by reacting a polyester resin or a polyol with a hydroxyl or carboxyl functional mercaptan and subsequently reacting the mercapto-blocked polyester or polyol in the presence of peroxygen-type or azo-type catalyst, with selected alpha, beta-ethylenically unsaturated monomer(s), such as diacetone acrylamide, acrylic acid, methacrylic acid, ethyl acrylate, butyl acrylate, styrene, methyl methacrylate, methacrylonitrile and the like. Such block copolymers provide for coating compositions having physical properties which provide for useful protective and decorative films.
    Type: Grant
    Filed: May 1, 1972
    Date of Patent: April 5, 1977
    Assignee: PPG Industries, Inc.
    Inventors: Carl Clement Anderson, Rostyslaw Dowbenko
  • Patent number: 3997485
    Abstract: An ambient temperature, moisture curable coating composition which dries to form films having excellent gloss characteristics comprises a blend of (1) a silicon-containing acrylic interpolymer; (2) a graft copolymer having an alkyd resin backbone and a polymeric side chain segment of polymerized acrylic and organoalkoxysilane monomers; and (3) a cure accelerating catalyst.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: December 14, 1976
    Assignee: PPG Industries, Inc.
    Inventors: Rostyslaw Dowbenko, Marvis E. Hartman
  • Patent number: 3996309
    Abstract: Colloidal dispersions in non-aqueous media are sterically stabilized in a solvent medium by a copolymer of1. a chain-like terminally monoethylenically unsaturated macromonomer which is soluble in the solvent and has a molecular weight of at least 500, and2. an anchor component comprising a polymerizable material consisting of at least one ethylenically unsaturated monomer,Where the stabilizer contains masked hydroxyl groups.
    Type: Grant
    Filed: November 7, 1972
    Date of Patent: December 7, 1976
    Assignee: PPG Industries, Inc.
    Inventors: Rostyslaw Dowbenko, Wen-Hsuan Chang
  • Patent number: RE30772
    Abstract: Radiation curable compounds are disclosed comprising an amide moiety, a urethane moiety and an ethylenically unsaturated functional group, typically an acrylate functional group. The compounds comprise the reaction products of an amide-containing compound having at least one hydroxy functional group, a polyisocyanate and a polyfunctional compound having a hydroxy functional group reactive with an isocyanato group of the polyisocyanate, which polyfunctional compound provides an ethylenic functional group in the reaction product. Coating compositions containing these radiation curable reaction products cure at relatively high rates to form films having high abrasion resistance and improved tensile strength and elongation properties as compared to conventional urethane acrylate coating compositions.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: October 13, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Charles B. Friedlander, Gerald W. Gruber, Rostyslaw Dowbenko