Patents Examined by V. P. Hoke
  • Mercaptophenol derivatives as age resisters for polymers
    Patent number: 4308199
    Abstract: Mercaptophenols are reacted with compounds containing olefinic unsaturation, or polycyclic olefins, or dihydroxy compounds to form phenolic antioxidants such as 3,8-bis(4-hydroxyphenylthio)-tricyclo[5.2.1.0..sup.2,6 ] decane; 1,4-bis[2-(4-hydroxyphenylthio)ethyl]benzene and age resistant polymers containing said antioxidants.
    Type: Grant
    Filed: January 17, 1980
    Date of Patent: December 29, 1981
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Kirkwood S. Cottman
  • Thermoplastic fire retardant composition
    Patent number: 4308198
    Abstract: An improved thermoplastic moulding composition with enhanced fire-resistant characteristics, composed of vinylchloride polymers and a graft copolymer of a vinyl aromatic and a nitrile monomer on a synthetic rubber-like polymer together with a zinc-titanium (IV) oxide compound, added as fire retardant.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: December 29, 1981
    Assignee: Stamicarbon, B.V.
    Inventor: Hubertus J. Vroomans
  • Thermoplastic polyesters, and method of making hollow articles therefrom
    Patent number: 4307060
    Abstract: Disclosed are new copolyesters of terephthalic acid, bis(4-.beta.-hydroxyethyoxyphenyl)sulfone, ethylene glycol and a very small amount of a trifunctional cross-linking agent, particularly useful as molding compounds, especially for the extrusion-blow molding process of making hollow articles, and a method of making hollow articles.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: December 22, 1981
    Assignee: Owens-Illinois, Inc.
    Inventor: Santo W. Go
  • Zeolites as smoke suppressants for halogenated polymers
    Patent number: 4307010
    Abstract: Zeolites and metal-ion exchanged zeolite are used to impart smoke suppressant characteristics to halogenated polymers.
    Type: Grant
    Filed: January 17, 1980
    Date of Patent: December 22, 1981
    Assignee: Pennwalt Corporation
    Inventors: Stanley R. Sandler, John C. Wetzel
  • Polymeric alkylbenzenoid hydroquinoid antioxidants
    Patent number: 4307012
    Abstract: Compositions of oxidizable organic materials having stabilizing amounts of polymeric alkylbenzenoid hydroquinoid antioxidants of from about 500 to about 50,000 molecular weight, and polymers which are the reaction products of a hydroquinone compound and a polymeric monohydroxy alkylbenzenoid compound.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: December 22, 1981
    Assignee: Standard Oil Company
    Inventor: Carl Serres, Jr.
  • Phenolic esteramide antioxidants
    Patent number: 4305868
    Abstract: Novel phenolically substituted esterbisamides as antioxidants useful for the protection of organic materials such as synthetic and natural rubbers, plastics and petroleum products against oxidative degradation.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: December 15, 1981
    Assignee: Uniroyal, Inc.
    Inventors: Edward L. Wheeler, Elmar H. Jancis, Richard A. Gencarelli, Franklin H. Barrows
  • Semisolid water-based coating compositions
    Patent number: 4304693
    Abstract: This invention relates to coating compositions which are "solid" prior to application, yet, which when applied to a substrate, flow and level in a manner similar to conventional coating compositions.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: December 8, 1981
    Assignee: PPG Industries, Inc.
    Inventors: William G. Boberski, James E. Jones, Rodger G. Temple
  • Polyfunctional phenolic oxamide antioxidants
    Patent number: 4304714
    Abstract: Novel phenolic oxamide antioxidants for protecting organic materials such as synthetic and natural rubbers, petroleum products, and plastics from oxidative degradation.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: December 8, 1981
    Assignee: Uniroyal, Inc.
    Inventors: Edward L. Wheeler, Elmar H. Jancis, Richard A. Gencarelli, Franklin H. Barrows
  • Stabilized polyester compositions
    Patent number: 4303576
    Abstract: Stabilized polyester compositions comprise (1) an ethylenically unsaturated polyester prepared by esterifying a polyepoxide with an ethylenically unsaturated monocarboxylic acid (e.g., acrylic or methacrylic acid) in the presence of an organic phosphine catalyst (e.g., triphenylphosphine), (2) a primary or secondary amine (e.g., p,p'-dioctyldiphenylamine) and, optionally, (3) a compatible ethylenically unsaturated monomer (e.g., styrene).
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: December 1, 1981
    Assignee: Shell Oil Company
    Inventor: Roy J. Jackson, Jr.
  • Vinyl ester resins having improved color
    Patent number: 4303579
    Abstract: The present invention provides stable vinyl ester compositions exhibiting improved color stability comprising a vinyl ester resin prepared by esterifying an epoxy compound with an ethylenically unsaturated monocarboxylic acid and a stabilizer composition comprising hydroquinone and a sterically hindered phenol.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: December 1, 1981
    Assignee: Shell Oil Company
    Inventor: Roy J. Jackson
  • Polyamide antiozonants
    Patent number: 4303577
    Abstract: Novel compounds produced by reacting 5-sulfoisophthalic acid or a salt thereof (e.g. the potassium salt) with a water soluble copper salt (e.g. cupric acetate monohydrate) are described. The compounds are effective antiozonants for polyamide fibers, particularly, when the fibers are dyed with disperse dyes. Generally, sufficient amounts of the compounds are incorporated into the fibers to provide from 10 to 100 ppm, on weight of fiber, of copper.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: December 1, 1981
    Assignee: Monsanto Company
    Inventors: James S. Ridgway, Donald A. Holmer, Oscar A. Pickett, Jr.
  • Tris-(3-hydroxyalkyl) phosphine oxide flame retardant compositions
    Patent number: 4301057
    Abstract: Thermoplastic polyamide polymers such as nylon 6/6 are rendered fire retardant by the addition of an effective amount of a tris-(3-hydroxyalkyl) phosphine oxide such as tris-(3-hydroxypropyl) phosphine oxide.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: November 17, 1981
    Assignee: FMC Corporation
    Inventors: Diza P. Braksmayer, Syed N. Hussain
  • Diester of 3,5,3',5'-tetrabromo-bisphenol A with halogenated aromatic carboxylic acid
    Patent number: 4301062
    Abstract: A novel diester compound of the formula (I): ##STR1## wherein each of R.sub.1 and R.sub.2 represents a group of the formula (II): ##STR2## wherein n is an integer of 0 to 4; and m an integer of 1 to 5, is found to be capable of imparting excellent flame-retardancy to various inflammable polymeric materials such as polystyrene, polyester, polyamide, polyphenylene oxide, etc. without deleterious effects on other physical properties of such polymeric materials.
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: November 17, 1981
    Assignee: Asahi Dow Limited
    Inventors: Izumi Yamashita, Kazuo Yoshida, Yuji Kusumi, Kunio Fukuda, Kichiya Tazaki
  • Compound for pinhole-free rotational casting
    Patent number: 4301063
    Abstract: Salts of fatty acids such as calcium stearate and lithium stearate are added to olefin polymer-based rotational molding compositions to provide rotational moldings with pinhole-free surfaces.
    Type: Grant
    Filed: October 3, 1975
    Date of Patent: November 17, 1981
    Assignee: Union Carbide Corporation
    Inventor: Michael W. Sowa
  • Diphenylamine derivatives and degradation inhibitors for rubber polymers
    Patent number: 4298522
    Abstract: A diphenylamine derivative of the general formula ##STR1## wherein R represents a hydrogen atom or a methyl group, R.sub.1 and R.sub.2, independently from each other, represent a hydrogen atom, a chlorine atom, a bromine atom, or a hydrocarbon radical having 1 to 12 carbon atoms, and A represents ##STR2## and a degradation inhibitor for rubbery polymers comprising the aforesaid diphenylamine derivative as an active ingredient.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: November 3, 1981
    Assignee: Nippon Zeon Co. Ltd.
    Inventors: Mitsuhiro Tamura, Tetsuo Ohishi, Hiroshi Sakurai
  • Phenolic ester synthetic resin stabilizers
    Patent number: 4298520
    Abstract: This invention relates to a new class of phenolic compounds containing a phosphorus acid ester group which are stabilizers for synthetic resins and to synthetic resin stabilizer compositions comprising these phenolic compounds as well as to synthetic resins stabilized with such phenolic compounds and with stabilizer compositions comprising these phenolic compounds along with known polymer stabilizers.
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: November 3, 1981
    Assignee: Argus Chemical Corp.
    Inventors: Motonobu Minagawa, Yutaka Nakahara, Masayuki Takahashi
  • 1,4-Dihydro-2,6 dimethylyridine-3,5-dicarboxylic acid ester compositions
    Patent number: 4297268
    Abstract: Stabilization of chlorine-containing thermoplasts with 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylic acid esters alone or, in particular, together with a metal-containing stabilizer as synergist.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: October 27, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Gerd Abeler, Rudolf Maul
  • N,N'-Bis(1-cyclohexyl-1-ethyl)-p-phenylenediamine, and rubber compounds containing the same
    Patent number: 4297269
    Abstract: N,N'-Bis(1-cyclohexyl-1-ethyl)-p-phenylenediamine is disclosed as a novel compound, useful as an antidegradant for organic materials, such as rubber. Vulcanized or vulcanizable rubber compounds containing minor amounts of this compound show excellent resistance to ozone attack, under static or dynamic exposure.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: October 27, 1981
    Assignee: Monsanto Company
    Inventors: Helmut L. Merten, Gene R. Wilder
  • Flame-retardant polyester fiber compositions
    Patent number: 4295886
    Abstract: Flame-retardant polyester fibers containing 5 to 20% by weight of 3,9-diphenyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane-3,9-dioxide , a novel compound, as the sole frame-retardant additive or a two-component additive comprising the aforesaid spirophosphonate in admixture with 20 to 80% of certain polychlorinated or polybrominated diaryl compounds.
    Type: Grant
    Filed: October 9, 1973
    Date of Patent: October 20, 1981
    Assignee: Avtex Fibers Inc.
    Inventor: John T. Gresham
  • Nitrile rubber containing cadmium antioxidants
    Patent number: 4296007
    Abstract: Handling problems of cadmium curing agents are minimized by adding to a nitrile rubber latex an antioxidant in the form of a soluble alkali metal salt to form a modified latex and then coagulating the modified latex with a cadmium salt to form nitrile rubber containing bound antioxidant in the form of a cadmium compound. Alternately, a concentrate containing a large proportion of the antioxidant in the form of a cadmium compound is prepared which can be subsequently added to a nitrile latex to provide the cadmate cure function.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: October 20, 1981
    Assignee: The B. F. Goodrich Company
    Inventors: Roger E. Morris, August H. Jorgensen, Jr.