Patents Examined by Kriellion Morgan
  • Stabilized rigid polyvinyl chloride compositions
    Patent number: 4822833
    Abstract: Rigid polyvinyl chloride stabilized against the adverse effects of ultraviolet radiation by the addition thereto of effective amounts of 2,2,6,6-tetraalkylpiperidine compound and an organotin carboxylate thermal stabilizer, optionally with reduced amounts of titanium dioxide, organotin mercapto esters and/or organotin mercaptide thermal stabilizers.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: April 18, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Jean M. Zappia, Gerald A. Capocci
  • Radiation sterilizable composition and articles made therefrom
    Patent number: 4820755
    Abstract: This invention provides polymers containing radiochromic hindered phenolic stabilizers which are characterized by including a blue compound which interacts with the hindered phenolic during irradiation to provide a color change indicative of sterility.
    Type: Grant
    Filed: August 18, 1987
    Date of Patent: April 11, 1989
    Assignee: American Cyanamid Company
    Inventor: Joseph R. Webster
  • Phenolic corrosion inhibitors for coating materials
    Patent number: 4818777
    Abstract: Compounds of the formula I ##STR1## in which is independently hydrogen, alkyl, alkoxy, halogen, trifluoromethyl or nitro, R.sup.1 is hydrogen, alkyl, phenyl, substituted phenyl or furyl, R.sup.2 is hydrogen or alkyl, R.sup.3 and R.sup.4 are independently hydrogen, alkyl, allyl, aralkyl, alkoxy, halogen, phenyl or cyclohexyl, and R.sup.5 is hydrogen, alkyl or alkenyl, are good corrosion inhibitors for organic materials, especially for coating materials. They can at the same time also act as antioxidants and light stabilizers.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: April 4, 1989
    Assignee: Ciba-Geigy Corporation
    Inventor: Adalbert Braig
  • Stabilized polycarbonates
    Patent number: 4816504
    Abstract: Polycarbonate compositions comprising a small amount of a certain halogenobenzotriazole were found to be particularly suitable for optical purposes since they feature a desirable high UV-cutoff and since they are processable at high temperatures.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: March 28, 1989
    Assignee: Mobay Corporation
    Inventors: John V. Bailey, Sivaram Krishnan
  • Self-extinguishing compositions of thermoplastic polymers
    Patent number: 4812499
    Abstract: Compositions of thermoplastic polymers comprising, in mixture, a thermoplastic polymer and a mixture of self-extinguishability-conferring additives, formed by:ammonium phosphate or ammonium polyphosphate: ##STR1## (wherein p is preferably equal to or greater than 50); phosphorus-containing compound definable by means of the general formula: ##STR2## (wherein R.sub.1, R.sub.2 and R.sub.3 have the meaning as indicated in the disclosure).
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: March 14, 1989
    Assignee: Enichem Sintesi S.p.A.
    Inventors: Gioacchino Cipriani, Gianluigi Landoni
  • 1,3,2-oxazaphospholidine stabilizers
    Patent number: 4812501
    Abstract: 1,3,2-oxazaphospholidine derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: March 14, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Paul A. Odorisio, Stephen D. Pastor, James L. Hyun
  • Anaerobically curable composition having a good stability
    Patent number: 4812497
    Abstract: An anaerobically curable composition having a good stability and suitable for use primarily as an adhesive, which comprises a radically polymerizable acrylate and/or methacrylate monomer, and a naphthyl azoxine. The composition is satisfactorily stable even if a large amount of an inorganic filler is used therein.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: March 14, 1989
    Assignee: Three Bond Co. Ltd.
    Inventor: Shuji Mochizuki
  • Stabilized styrene polymer
    Patent number: 4812494
    Abstract: A styrene polymer is stabilized by incorporating into said styrene polymer(A) a hindered piperidine compound represented by the formula ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms,R.sub.2 is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, andR.sub.3 and R.sub.4 are each independently an alkyl group having 1 to 4 carbon atoms; and(B) a benzotriazole compound selected from the group consisting of 2-(2-hydroxy-5-methylphenyl)benzotriazole and 2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: March 14, 1989
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hideo Nagasaki, Shinichi Yachigo, Tamaki Ishii, Masakatsu Yoshimura, Yukoh Takahashi, Hiroki Yamamoto
  • Crosslinkable flame retardant composition of polyolefin and polyphenylene ether
    Patent number: 4808647
    Abstract: Curable flame retardant mixtures of a polyolefin (non-rubbery), a polyphenylene ether resin, an aromatic phosphate, a brominated compound or polymer, and a crosslinking agent are described. Electrically conductive articles having insulation material made of the composition and methods for preparing such articles are also disclosed.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: February 28, 1989
    Assignee: General Electric Company
    Inventors: Visvaldis Abolins, Joseph E. Betts, Fred F. Holub, Gim F. Lee, Jr.
  • 6-(1-hydro-2,2,6,6-tetraalkyl-piperidine-4-oxy)dibenzodioxaphosphepin and dioxaphosphocin process stabilizers
    Patent number: 4808645
    Abstract: Dibenzodioxaphosphepin and dibenzodioxaphosphocin derivatives are prepared by reacting selected 2,2'-biphenols with phosphorus trichloride in an organic solvent and then reacting the intermediate formed with a 1,4-dihydroxy-2,2,6,6-tetraalkylpiperidine. The phosphites formed are useful as stabilizers of organic polymers and lubricating oils, especially as process stabilizers for polyolefins, elastomers, polyesters and polycarbonates.
    Type: Grant
    Filed: March 30, 1988
    Date of Patent: February 28, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Ramanathan Ravichandran, John D. Spivack
  • Stabilizer mixtures for plastics
    Patent number: 4806580
    Abstract: Stabilizer mixtures for stabilizing plastics comprising one part by weight of a chroman derivative (I) of the general formula ##STR1## where R= ##STR2## where Z=C.sub.7 -C.sub.30 -alkyl, --CH.sub.2 CH.sub.2 --S--[C.sub.1 -C.sub.30 -alkyl] or ##STR3## and from 5 to 14 parts by weight of an organic phosphite of the general formula (II) ##STR4## where R.sup.1, R.sup.2 and R.sup.3 are identical of different alkyl and/or aryl or of an organic phosphonite of the formula (III) ##STR5## where +is C(CH.sub.3).sub.3, a mixing ratio (a):(b) of from 1:6 to 1:10 being preferred.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: February 21, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Gustav Bock, Hubert Trauth, Wilhelm Weber, Peter Lechtken
  • Flame retardant polypropylene based formulations
    Patent number: 4804698
    Abstract: A flame retardant polypropylene based formulation which contains polypropylene and a flame retardant amount of decabromodiphenyl oxide and a halogenated bisimide.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: February 14, 1989
    Assignee: Ethyl Corporation
    Inventor: Robert A. Schleifstein
  • Monomeric and oligomeric glutarate-based light stabilizers for plastics
    Patent number: 4804699
    Abstract: Monomeric and oligomeric derivatives of the dialkyl esters of polyalkyl 1,5-dioxa-9-azaspiro-[5.5]undecane-3,3-diacetic acid are useful light stabilizers for synthetic polymer resins such as polyolefins, and in particular, polypropylene.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: February 14, 1989
    Assignee: ICI Americas Inc.
    Inventors: Richard V. Nelson, John F. Stephen
  • Stabilization of aromatic polyesters with mercaptobenzothiazole
    Patent number: 4803236
    Abstract: An aromatic polyester composition comprising an aromatic polyester derived from terephthalic acid and/or isophthalic acid and a bisphenol and a stabilizer comprising mercaptobenzothiazole.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: February 7, 1989
    Assignee: Celanese Corporation
    Inventor: Jerold C. Rosenfeld
  • Body implants of extracellular matrix and means and methods of making and using such implants
    Patent number: 4801299
    Abstract: A sterile body implant is derived from a body structure having as its major protein component collagens in the form of extracellular matrix. The body structure is treated to remove cellular membranes, nucleic acids, lipids and cytoplasmic components. Such structures are implanted internally in the body or externally on the body in a variety of medical uses.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: January 31, 1989
    Assignee: University Patents, Inc.
    Inventors: Klaus Brendel, Raymond C. Duhamel
  • Compositions prepared from dialkanolamines and triglycidyl ethers of trisphenols
    Patent number: 4800215
    Abstract: Uncured compositions are prepared from dialkanolamines and polyglycidyl ethers of tris(hydroxyphenyl)alkanes. These compositions are water soluble or water miscible.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: January 24, 1989
    Assignee: The Dow Chemical Company
    Inventors: James L. Bertram, Willie L. Myles, Michael P. Kubisiak
  • Flame retardant polyetherimide ester elastomers
    Patent number: 4798858
    Abstract: A flame retardant composition comprising:(i) at least one polyetherimide ester polymer; and(ii) a flame retardant effective amount of at least one melamine compound.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: January 17, 1989
    Assignee: General Electric Company
    Inventors: Russell J. McCready, Nan-I Liu, John A. Tyrell
  • Bis-(2,2,6,6-tetramethyl-piperidyl) diimides as light stabilizers for synthetic polymers
    Patent number: 4798836
    Abstract: Bis-(2,2,6,6-tetramethyl-piperidyl)diimides are provided, having the formula: ##STR1## in which R is selected from the group consisting of hydrogen; oxyl; alkyl and alkenyl having from one to about eighteen carbon atoms; epoxy and hydroxyalkyl having from two to about eight carbon atoms; acyl having from two to about eight carbon atoms; and phenalkyl having from seven to about twelve carbon atoms; and Z is a tetravalent aliphatic or cycloaliphatic hydrocarbon group having from two to about eighteen carbon atoms; and stabilizer and synthetic polymer compositions containing such diimides having improved resistance to deterioration when exposed to light.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: January 17, 1989
    Assignee: Adeka Argus Chemical Co., Ltd.
    Inventors: Motonobu Minagawa, Yutaka Nakahara, Bunji Hirai, Kazuo Sugibuchi
  • Use of 3-benzalphthalides as UV stabilizers for thermoplastic, aromatic polyesters, polycarbonates and polyester carbonates
    Patent number: 4797435
    Abstract: Optionally substituted 3-benzalphthalides are effective UV stabilizers for thermoplastic aromatic polyesters, polycarbonates and polyester carbonates.
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: January 10, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Scholl, Volker Serini, Dietrich Rathmann, Ross Savage, Klaus Kircher
  • Oligomeric diazaoxaspirodecanes, preparation thereof and use thereof as light stabilizers for polymers
    Patent number: 4797436
    Abstract: The present invention relates to oligomeric tetraalkylpiperidine light stabilizers for polymers, to the preparation thereof from known polyalkyldiazaspirodecanes and epoxides, and to the use thereof for stabilizing polymers against the damaging effect of light, heat and oxygen.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: January 10, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Josef Ertl, Helmut Korbanka