Patents Assigned to Peroxid-Chemie GmbH
  • Patent number: 7214812
    Abstract: The invention relates to a stabilized peroxydicarbonate preparation and its use in the polymerization or copolymerization of ethylenically unsaturated compounds.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: May 8, 2007
    Assignee: Peroxid-Chemie GmbH & Co. KG
    Inventors: Eberhard Hägel, Martin Kunz, Werner Zeiss
  • Patent number: 7018516
    Abstract: A bipolar multi-purpose electrolytic cell for high current loads has a frame, two electrode edge plates with metal electrode sheet, and power supply and of bipolar plates. Each includes a plastic electrode base body with electrode rear spaces and/or with coolings spaces that are incorporated on one or both sides: incorporated supply and discharge lines for the electrolyte solutions and the cooling medium, metal electrode sheets which are applied to both sides of the base body and are solid and/or perforated in the electrochemically active area: electrolyte sealing frames, which rest on the solid metal electrode sheets and which are made of flexible plastic, and: ion exchanger membranes, which rest on the perforated metal electrode sheets and/or on the electrolyte sheets and/or on the electrolyte sealing frames and which are provided for separating the electrode spaces.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: March 28, 2006
    Assignee: Peroxid-Chemie GmbH & Co. KG
    Inventors: Michael Gnann, Wolfgang Thiele, Gerd Heinze
  • Patent number: 6730756
    Abstract: Olefin polymerization may be catalysed by a wide range of catalytic materials. Described herein is a heterogeneous olefin polymerization catalyst comprising a porous paniculate support material having impregnated therein a metallocene catalyst the metal atom whereof is bound to an amide group which is not bound to an &eegr;-ligand of the metallocene, or the reaction product of a said metallocene catalyst and a co-catalyst.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: May 4, 2004
    Assignees: Borealis A/S, Peroxid-Chemie GmbH
    Inventors: Ove Andell, Kalle Kallio, Hikka Knuuttitila
  • 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
  • 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 Hägel, Werner Zeiss, Maximilian Dorn
  • Patent number: 6316562
    Abstract: This invention relates to new metallocenes with mixed substituents and enhanced activity, methods of producing metallocene compounds, and the use of metallocenamide halides for generating an active catalyst system for (co)polymerization reactions.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: November 13, 2001
    Assignee: Peroxid-Chemie GmbH & Co. KG
    Inventors: Florian Munck, Werner Zeiss, Christoph Hartmann, Alexander Vogel, Andreas Detig
  • Patent number: 6034280
    Abstract: 2,5-dimethyl-2,5-di-t-butylperoxy-hexane is produced by reacting 2,5-dimethyl-1,5-hexadiene with t-butylhydroperoxide under acid catalysis in the presence of an electron pair acceptor Lewis acid in a substantially anhydrous solvent. If one uses technical water-containing t-butylhydroperoxide, the water can be separated, after mixing with the 2,5-dimethyl-1,5-hexadiene, by adding sulfuric acid or calcium chloride and subsequently the electron pair acceptor Lewis acid is added.
    Type: Grant
    Filed: October 12, 1998
    Date of Patent: March 7, 2000
    Assignee: Peroxid-Chemie GmbH
    Inventor: Eberhard Hagel
  • 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: 5856586
    Abstract: Disclosed is a process for the preparation of 2,5-dimethyl-2,5-dihydroperoxyhexene by reaction of 2,5-dimethyl-1,5-hexadiene with hydrogen peroxide in an acidic medium. According to this process, the 2,5-dimethyl-2,5-dihydroperoxyhexane can be prepared with good yield and in a technically simple way.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: January 5, 1999
    Assignee: Peroxid-Chemie GmbH
    Inventors: Eberhard Hagel, Werner Zeiss
  • Patent number: 5831134
    Abstract: A process is disclosed for producing tertiary alcohols by radical addition of secondary alcohols to alkenes. The reaction is carried out as a continuous process in the presence of an organic peroxide as a radical initiator and during a mean contact time of the reaction mixture of up to a maximum of 1 hour.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: November 3, 1998
    Assignee: Peroxid-Chemie GmbH
    Inventors: Michael Gnann, Maria Eckert, Robert Rieth, deceased, Werner Eberhard Wilhelm Rieth, heir, Emma Marianne Christine Rieth, heir
  • 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: 5488177
    Abstract: A method is described for the preparation of solutions containing little or no water of tertiary alkyl hydroperoxides in inert solvents by dewatering with sulfuric acid, according to which one or more inert organic solvents are added to an aqueous solution as well as sulfuric acid in such amount and concentration that in the aqueous phase forming after the mixing followed by separation of the phases there is at least 49% of H.sub.2 SO.sub.4 and the water content in the organic phase amounts to no more than 2.5%.
    Type: Grant
    Filed: November 1, 1994
    Date of Patent: January 30, 1996
    Assignee: Peroxid-Chemie GmbH
    Inventors: Hans Appel, Fritz Diem
  • Patent number: 5462692
    Abstract: Stable, solid acetyl peroxyborate compounds which are active oxygen-containing compounds derived from acetic acid and boron-oxygen compounds. The compounds of the invention have a peracetic acid content which can be liberated instantly and directly in water with only minor formation of hydrogen peroxide The acetyl peroxyborates of the invention are useful in washing, bleaching and cleaning agent and disinfectant applications and as oxidizing agents in organic synthesis.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: October 31, 1995
    Assignee: Peroxid-Chemie GmbH
    Inventors: Richard Roesler, Siegfried Schelle, Michael Gnann, Werner Zeiss
  • Patent number: 5399328
    Abstract: A process is described for preparing peroxyborate agglomerates having an active oxygen content of at least 14% by weight in which amorphous primary particles composed of peroxyborate prepared by a spray drying process are subjected to compacting pressing-agglomeration. Briquettes, compressed strips and tablets can be obtained which can be comminuted, if desired, to peroxyborate granules of desired particle size and bulk density. Advantageous, optionally colored, peroxyborate agglomerates, particularly peroxyborate granules are prepared. Preferred agglomerates and granules are composed of sodium peroxyborates.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: March 21, 1995
    Assignee: Peroxid-Chemie GmbH
    Inventors: Werner Doetsch, Richard Roesler, Werner Zeiss, Rudolf Siegel
  • Patent number: 5290476
    Abstract: A process for preparing microcrystalline perborate hydrate products and highly concentrated, storage stable aqueous solutions used for this purpose which have a stable active oxygen content and a boron content of 3 to 8% by wt. based on the total weight of the solution. The products of the invention are suitable for numerous uses in the field of bleaching agent, disinfectant and liquid detergent formulations, and other fields of use.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: March 1, 1994
    Assignee: Peroxid-Chemie GmbH
    Inventors: Richard Roesler, Werner Doetsch, Werner Zeiss, Rudolf Siegel
  • Patent number: 5268440
    Abstract: For the preparation of polyethylenes using a diphenyl ethane derivative as C-C labile polymerization initiator, 1 to 40 mole 3,4-dimethyl-3,4-diphenyl hexane, based on 1 million mole ethylene used, are polymerized at 260.degree. to 400.degree. C. at a pressure of 60,000 to 350,000 kgfa.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: December 7, 1993
    Assignee: Peroxid-Chemie GmbH
    Inventors: Gerhard Luft, Maiximilian Dron, Norbert Fischer
  • Patent number: 5244644
    Abstract: A process for producing an alkali metal carbonate peroxyhydrate having improved storage stability by mixing particles of an alkali metal carbonate peroxyhydrate with an effective storage stability improving amount of a powdered fatty acid metal salt.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: September 14, 1993
    Assignee: Peroxid-Chemie GmbH
    Inventor: Werner Doetsch
  • Patent number: 5232680
    Abstract: A method for further purifying previously distilled hydrogen peroxide for use in microelectronics in which a hydrogen peroxide starting solution purified initially by distillation is contacted, after the addition of a small amount of chelating agent, with a non-ion-exchanging polymeric adsorbent, such as a styrene-divinylbenzene copolymer, to obtain a highly purified hydrogen peroxide solution which satisfies the stringent purity requirements for use in producing 4-megabit and 16-megabit microprocessor chips.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: August 3, 1993
    Assignee: Peroxid-Chemie GmbH
    Inventors: Helmut Honig, Siegfried Geigel