Patents by Inventor Maximilian Dorn

Maximilian Dorn 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).

  • Publication number: 20050239969
    Abstract: Disclosed is a method for producing a polymeric hydroperoxide which forms a radical polymer but no low-molecular radical under redox influence. According to the inventive method, a synthetic polymer containing at least one tertiary hydroxyl group or olefin function is reacted with concentrated hydrogen peroxide and a concentrated mineral acid.
    Type: Application
    Filed: July 30, 2003
    Publication date: October 27, 2005
    Inventors: Maximilian Dorn, Eberhard Hagel
  • Patent number: 6511578
    Abstract: The invention relates to a method of bleaching and/or delignifying cellulose, in which (a) a sodium hydroxide solution and a peroxydisulphate solution are first of all produced by electrolysis of a sulphate, (b) the peroxydisulphate solution is converted by hydrolysis into a Caro's acid/caroate solution, (c) said Caro's acid/caroate solution is left to cool and (d) used immediately as a bleaching solution for bleaching and/or delignifying cellulose, the Caro's acid/caroate solution becoming neutralised upon introduction into the bleaching solution.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: January 28, 2003
    Assignee: Peroxid-Chemie GmbH & Co. KG
    Inventors: Maximilian Dorn, Michael Gnann, Sven Gutewort, Werner Sebb
  • Publication number: 20020117276
    Abstract: The invention relates to a method of bleaching and/or delignifying cellulose, in which
    Type: Application
    Filed: September 21, 1999
    Publication date: August 29, 2002
    Inventors: MAXIMILIAN DORN, MICHAEL GNANN, SVEN GUTEWORT, WERNER SEBB
  • Patent number: 6395924
    Abstract: The new compound t-butylperoxycyclododecyl oxalate is described, as well as a method of preparing it and use of the compound as a polymerization initiator.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: May 28, 2002
    Assignee: Peroxid-Chemie GmbH & Co KG
    Inventors: Eberhard H├Ągel, Werner Zeiss, Maximilian Dorn
  • Patent number: 5973087
    Abstract: Disclosed is a catalyst system for the production of ethylene co-polymers by co-polymerisation of ethylene with further polymerisable monomers in the presence of a peroxide catalyst. The catalyst system contains components (A) and (B), component (A) being at least one organo-aluminium compound of the general formula AlR.sub.3, in which R is an alkyl, alkenyl, aryl, aralkyl or cycloalkyl radical, and component (B) is at least one organic peroxide.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: October 26, 1999
    Assignee: Peroxid-Chemie GmbH
    Inventors: Gerhard Luft, Majid Jabbari, Maximilian Dorn
  • Patent number: 5756616
    Abstract: For the production of polyolefins by polymerization of .alpha.-olefins in the presence of a peroxide catalyst a catalyst system is used as the catalyst which is composed of the components (A) and (B) in which:(A) denotes at least one compound selected from the group of organoaluminium compounds of formula AlR3 in which R represents an alkyl, alkenyl, aryl or cycloalkyl group; and(B) denotes at least one organic peroxide.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: May 26, 1998
    Assignee: Peroxid-Chemie GmbH
    Inventors: Gerhard Luft, Brigitte Batarseh, Maximilian Dorn
  • Patent number: 5589526
    Abstract: The present invention provides a master batch composition based on elastomeric carriers, comprising an organic peroxide, a plasticizer and a filling material and optionally further additives compatible with the organic peroxide, wherein, in addition to the elastomeric carrier, it contains a polyoctenamer.The present invention also provides a process for the production of a master batch composition, wherein (a) the elastomeric carrier, the polyoctenamer, the plasticizer and optionally a part of the filling material or filling material mixture are homogeneously mixed and thereafter (b) the filling material or the filling material mixture or possibly the remaining amounts thereof, together with the organic peroxide, are incorporated at a temperature below the decomposition temperature of the peroxide.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: December 31, 1996
    Assignee: Peroxid-Chemie GmbH
    Inventors: Gunter Sienel, Maximilian Dorn, Heinz Zimmermann
  • Patent number: 5523466
    Abstract: Disclosed is a diacylperoxide vinyl ester of the general formula I ##STR1## in which R is an alkylene residue which can be straight-chained, branched or cyclic and which can contain 2 to 10 C atoms or R is an aryl residue, suitable for copolymerization with olefinic unsaturated monomers under conditions in which they do not yet radically decompose.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 4, 1996
    Assignees: Peroxid Chemie GmbH, Wacker-Chemie GmbH
    Inventors: Maximilian Dorn, Eberhard Hagel, Klaus Kohlhammer
  • Patent number: 5032688
    Abstract: A process for the preparation of aralkyl hydroperoxides having the formula (I) is described ##STR1## in which n=1, 2 or 3, Ar means a phenyl group which can be substituted with halogen or one or more branched or straight chain alkyl groups with 1 to 5 C-atoms, or a naphthyl group, and each radical R.sup.1 and R.sup.2 means a low alkyl radical, the alkyl radicals R.sup.1 and R.sup.2 together having 2 to 4 carbon atoms, by reaction of aralkyl carbinols having the formula (II) ##STR2## in which Ar, R.sup.1, R.sup.2 and n have the meaning given for formula (I), with hydrogen peroxide under acid conditions, the reaction being carried out in the presence of an acid-combining agent. An alkali sulphate, ammonium sulphate, alkali hydrogen sulphate and/or ammonium hydrogen sulphate is used in preference as the acid-combining agent. Tert.aralkyl hydroperoxides can be prepared in high yield with a high purity in a simple and safe manner with this process.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: July 16, 1991
    Assignee: Peroxid-Chemie GmbH
    Inventors: Maximilian Dorn, Eberhard Hagel, Werner Zeiss
  • Patent number: 4743671
    Abstract: The present invention provides a process for cross-linking organopolysiloxanes by means of a bis-benzoyl peroxide derivative with heating, wherein, as bis-benzoyl peroxide derivative, there is used at least one compound of the general formula: ##STR1## in which the symbols R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5, each independently of one another, have the following meanings: R.sup.1 and R.sup.5 are the same or different and signify alkoxycarbonyl radicals with 2 to 4 carbon atoms in the alkyl moiety or fluorine or hydrogen atoms, R.sup.2 and R.sup.4 are the same or different and signify alkyl radicals with 2 to 8 carbon atoms or hydrogen atoms and R.sup.3 signifies an alkyl radical with 1 to 8 carbon atoms or a hydrogen atom, at least 2 symbols and at most 4 symbols per benzene ring signifying hydrogen atoms.
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: May 10, 1988
    Assignee: Peroxid-Chemie GmbH
    Inventors: Maximilian Dorn, Erwin Rossberger, Josef Weinmaier, Eberhard Hagel
  • Patent number: 4419197
    Abstract: The present invention provides a process for cross-linking non-polar polymers in a high-frequency electric alternating field with the use of a peroxide as cross-linking agent, wherein the cross-linking agent used is a peroxide of the general formula: ##STR1## in which R.sup.1 is a hydrogen atom, an alkyl radical containing up to 4 carbon atoms or a phenyl radical optionally substituted by halogen atoms or alkyl radicals containing up to 4 carbon atoms;R.sup.2, R.sup.3, R.sup.4 and R.sup.5, which can be the same or different, are hydrogen atoms or, together with the carbon atoms to which they are attached, represent o-phenylene radicals;A is a straight-chained or branched alkylene radical containing up to 5 carbon atoms or a straight-chained or branched alkylene radical containing up to 5 carbon atoms or a phenylene radical and;R.sup.6 is a hydrogen atom or a radical of the general formula ##STR2## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are identified as above.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: December 6, 1983
    Assignee: Peroxide-Chemie GmbH
    Inventors: Heinz Meyer, Maximilian Dorn, Hans Seidl