With Preservative Or Stabilizer Patents (Class 558/304)
  • Publication number: 20120203020
    Abstract: The invention provides a composition and a method of using the composition for inhibiting the unwanted polymerization of ethylenically unsaturated monomers. The composition is prepared by reducing a nitroxide stable free radical to its corresponding hydroxylamine through reaction with a dialkyl/aryl hydroxylamine and subsequent addition of a polymerization prevention component selected from phenolic antioxidants, phenylenediamine and phenylenediamine derivatives, or phenothiazine and phenothiazine derivatives targeted towards ethylenically unsaturated monomers. The conversion of the nitroxide by the dialkyl/aryl hydroxylamine is to prevent it or the polymerization prevention component from being “spent” by reaction with each other, impurities or any other incompatible components. This allows previously incompatible combinations to now work effectively. In fact, the combination is more efficacious as the combination exerts a synergy due to the presence of various polymerization prevention reagents.
    Type: Application
    Filed: February 3, 2011
    Publication date: August 9, 2012
    Inventor: David Youdong Tong
  • Publication number: 20110159054
    Abstract: The present invention is directed to compositions comprising an acylanilide, such as bicalutamide, having improved solubility in water. The bicalutamide particles of the composition have an effective average particle size of less than about 2000 nm, and are useful in the treatment of prostate cancer.
    Type: Application
    Filed: March 2, 2011
    Publication date: June 30, 2011
    Inventors: Scott Jenkins, Gary Liversidge
  • Patent number: 7893099
    Abstract: The invention relates to a compound of formula (I) wherein A1 and R1 to R5 are defined as in the description and in the claims. The compound of formula (I) can be used as a medicament.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: February 22, 2011
    Assignee: Hoffman-La Roche Inc.
    Inventors: David Banner, Simona M. Ceccarelli, Uwe Grether, Wolfgang Haap, Hans Hilpert, Holger Kuehne, Harald Mauser, Jean-Marc Plancher, Ruben Alvarez Sanchez
  • Patent number: 6797848
    Abstract: An anthracene derivative represented by general formula (I): wherein X and Y represent a trifunctional aromatic ring group or the like, A1 to A4 represent an aryl group or a monovalent heterocyclic group, R1 to R16 represent hydrogen atom, a halogen atom, cyano group, nitro group, alkyl group or the like, Q represents an arylene group or the like and p represents 0, 1 or 2; and an organic electroluminescence device which comprises at least an organic light emitting layer disposed between a pair of electrodes and the above anthracene derivative. The novel anthracene derivative exhibits a high efficiency of light emission and excellent heat resistance when the derivative is used as a material constituting an organic electroluminescence device.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: September 28, 2004
    Assignee: Idemitsu Kosan, Ltd.
    Inventors: Chishio Hosokawa, Hidetsugu Ikeda, Masakazu Funahashi
  • Patent number: 6031123
    Abstract: A process for stabilizing enantiomer-enriched cyanohydrins where citric acid and/or boric acid or boric anhydride is added as a stabilizer to the cyanohydrin to be stabilized.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: February 29, 2000
    Assignee: DSM Fine Chemicals Austria GmbH
    Inventors: Peter Pochlauer, Irma Wirth, Rudolf Neuhofer
  • Patent number: 5670692
    Abstract: Ethylenically unsaturated monomers are protected from premature polymerization during manufacture and storage by the incorporation therein of an effective stabilizing amount of a 7-substituted quinone methide compound.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: September 23, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Nesvadba, Samuel Evans, Matthew E. Gande, Volker H. von Ahn, Roland A. E. Winter
  • Patent number: 5616772
    Abstract: A method of stabilizing nitriles, and in particular iminodiacetonitrile (IDAN), ethylendiamine-triacetonitrile (EDTN), and especially nitrilotriacetonitrile (NTAN). The present invention also encompasses the resulting stabilized nitrile. The method of the present invention comprises contacting the nitrile with a mixture of silica and alumina, zeolites or glass.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 1, 1997
    Assignee: Hampshire Chemical Corp.
    Inventors: Gerald J. O'Neill, Albert H. Levesque
  • Patent number: 5597940
    Abstract: Disclosed is a process for producing .beta.-nitroenamine represented by the formula I: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and independently indicate a hydrogen atom or a C.sub.1 -C.sub.10 alkyl group which may be optionally substituted with at least one group selected from the group consisting of a halogen atom, a lower alkoxy group, an aryloxy group, a hydroxyl group or an aryl group, or an aryl group which may be optionally substituted with a halogen atom, a lower alkyl group, a lower alkoxy group, an aryl group, an aryloxy group, a nitro group, a cyano group, an acylamino group, a di-lower alkylamino group, an arylamino group, a hydroxyl group, an arylsulfonyl group, a mercapto group, a lower alkylthio group or an arylthio group, R.sub.1 and R.sub.2 may bond together to form a cycloalkyl or bicycloalkyl and R.sub.3 is a hydrogen atom, a lower alkyl group, a cycloalkyl group or an aralkyl group; and an intermediate for producing the .beta.-nitroenamine.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: January 28, 1997
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Shinzo Seko
  • Patent number: 5424343
    Abstract: A cyanoacrylate monomer adhesive formulation which has improved thermal properties resulting from the inclusion in the formulation of an effective amount for enhancing the thermal resistance of the cured polymer of a naphthosultone compound having at least one strong electron withdrawing group thereon, suitably a nitro group.
    Type: Grant
    Filed: October 8, 1992
    Date of Patent: June 13, 1995
    Assignee: Loctite Corporation
    Inventor: Shabbir Attarwala
  • Patent number: 5302681
    Abstract: The premature free-radical polymerization of a non-linear, readily polymerizable organic monomer under conditions where the monomer would otherwise polymerize is inhibited by incorporating within the non-linear, readily polymerizable monomer a polymerization inhibiting amount of a fullerene or a derivative thereof.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: April 12, 1994
    Assignee: Nalco Chemical Company
    Inventor: Robert D. McClain
  • Patent number: 5243063
    Abstract: A method for inhibiting fouling in an organic process stream which is substantially non-aqueous by the addition of certain oxime compounds.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: September 7, 1993
    Assignee: Ashchem I.P., Inc.
    Inventors: Guy A. Devicaris, Kaj D. Rondum, Dwight E. Emerich
  • Patent number: 4587060
    Abstract: Cyanohydrins or a solution thereof in an inert solvent are stabilized by treatment with organophosphoric acids.
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: May 6, 1986
    Assignee: Shell Oil Company
    Inventors: Thomas H. Colby, Walter Dong