With Preservative Or Stabilizer Patents (Class 558/261)
  • Publication number: 20140024850
    Abstract: By using protonic acids, diesters of dicarbonic acid may be stabilized against thermal and chemical decomposition over a relatively long period. Mixtures of diesters of dicarbonic acid and protonic acids are outstandingly suitable for preserving foods.
    Type: Application
    Filed: September 20, 2013
    Publication date: January 23, 2014
    Applicant: LANXESS Deutschland GmbH
    Inventors: Steffen KAHLERT, Johannes KAULEN, Erasmus VOGL
  • Patent number: 8466308
    Abstract: By using phosphorus compounds, diesters of dicarbonic acid may be stabilized against thermal and chemical decomposition over a relatively long period. Mixtures of diesters of dicarbonic acid and phosphorus compounds are outstandingly suitable for preserving foods.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: June 18, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Steffen Kahlert, Johannes Kaulen, Erasmus Vogl
  • Publication number: 20120237650
    Abstract: By using phosphorus compounds, diesters of dicarbonic acid may be stabilized against thermal and chemical decomposition over a relatively long period. Mixtures of diesters of dicarbonic acid and phosphorus compounds are outstandingly suitable for preserving foods.
    Type: Application
    Filed: May 29, 2012
    Publication date: September 20, 2012
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Steffen Kahlert, Johannes Kaulen, Erasmus Vogl
  • Patent number: 8207368
    Abstract: By using phosphorus compounds, diesters of dicarbonic acid may be stabilized against thermal and chemical decomposition over a relatively long period. Mixtures of diesters of dicarbonic acid and phosphorus compounds are outstandingly suitable for preserving foods.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: June 26, 2012
    Assignee: LANXESS Deutschland GmbH
    Inventors: Steffen Kahlert, Johannes Kaulen, Erasmus Vogl
  • Publication number: 20100069658
    Abstract: By using phosphorus compounds, diesters of dicarbonic acid may be stabilized against thermal and chemical decomposition over a relatively long period. Mixtures of diesters of dicarbonic acid and phosphorus compounds are outstandingly suitable for preserving foods.
    Type: Application
    Filed: April 11, 2007
    Publication date: March 18, 2010
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Steffen Kahlert, Johannes Kaulen, Erasmus Vogl
  • Publication number: 20090216038
    Abstract: The present invention relates to the technical purification of vinylene carbonate (VC) by means of a simple thermal treatment with organic compounds which possess amidic nitrogen-hydrogen bonds, followed by a distillation and a melt crystallization. In this way VC of ultra-high purity is obtained. The high-purity vinylene carbonate can be stored and transported without stabilizer.
    Type: Application
    Filed: May 4, 2006
    Publication date: August 27, 2009
    Inventors: Reinhard Langer, Paul Wagner, Heinrich Grzinia
  • Publication number: 20090140208
    Abstract: Finely divided solids are highly suitable for use as stabilizers for pyrocarbonic acid diesters, it being possible to use the mixtures obtained in this manner for preserving industrial materials and foodstuff.
    Type: Application
    Filed: May 7, 2007
    Publication date: June 4, 2009
    Applicant: LANXESS Deutschland GmbH
    Inventors: Johannes Kaulen, Erasmus Vogl
  • 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 H├Ągel, Martin Kunz, Werner Zeiss
  • Patent number: 6992225
    Abstract: The invention concerns a heat stabilizer of organic peroxides characterized in that it is an N-hetrocyclic compound which contains at least one nitroxyl radical with the N atom of the nitroxyl radical forming part of the ring. The invention also concerns a storage-stable and heat-stable organic peroxide composition containing an N-hetrocyclic compound which contains at least one nitroxyl radical with the N atom of the nitroxyl radical forming part of the ring, the method for preparing the same and uses thereof for modifying polymers.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: January 31, 2006
    Assignee: Arkema
    Inventors: Sandra Grimaldi, Olivier Guerret, Jean-Luc Couturier, Fabien Debaud
  • Patent number: 6846888
    Abstract: Thermally stabilized initiator compositions comprising: (a) at least one dialkyl peroxydicarbonate, and (b) a stabilizing effective amount of a compound of Structure I: wherein R1 and R2 are as defined in the summary of the invention section, processes for their preparation and use are disclosed.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: January 25, 2005
    Assignee: ATOFINA Chemicals, Inc.
    Inventors: Barbara L. Stainbrook, Michael S. Mendolia, Terry N. Myers, Peter A. Callais, Joseph M. Brennan
  • Publication number: 20040162438
    Abstract: The invention relates to a stabilized peroxydicarbonate preparation and its use in the polymerization or copolymerization of ethylenically unsaturated compounds.
    Type: Application
    Filed: December 19, 2003
    Publication date: August 19, 2004
    Inventors: Eberhard Hagel, Martin Kunz, Werner Zeiss
  • Patent number: 6399728
    Abstract: Thermally stabilized initiator composition comprising: (a) at least one dialkyl peroxydicarbonate, and (b) a stabilizing effective amount of a compound of Structure I: wherein R1 and R2 are as defined in the summary of the invention section, processes for their preparation and use are disclosed.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: June 4, 2002
    Assignee: ATOFINA Chemicals, Inc.
    Inventors: Barbara L. Stainbrook, Michael S. Mendolia, Terry N. Myers, Peter A. Callais, Joseph M. Brennan
  • Patent number: 5892090
    Abstract: Peroxydicarbonate compounds are stabilized against decomposition by the presence of an effective amount of one or more oximes of the general formula ##STR1## wherein R.sup.A and R.sup.B are optionally substituted alkyl or alkenyl of up to 22 carbon atoms or phenyl, or form a C.sub.4 -C.sub.8 cycloalkyl ring.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: April 6, 1999
    Assignee: Witco Corporation
    Inventor: Peter Frenkel
  • Patent number: 5654464
    Abstract: Organic peroxide compositions which contain a cyclic .alpha.-diketone compound to retard the rate of decomposition of the peroxide compound are disclosed.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: August 5, 1997
    Assignee: Witco Corporation
    Inventors: Charles Abma, Peter Frenkel, Lawrence Bock
  • Patent number: 5654463
    Abstract: Organic peroxide compositions which contain an .alpha.-hydroxyalkyl peroxide compound to retard the rate of decomposition of the peroxide compound are disclosed.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: August 5, 1997
    Assignee: Witco Corporation
    Inventors: Charles Abma, Peter Frenkel
  • Patent number: 5359003
    Abstract: Polysulfide derivatives, having the general formula (A--S--S--).sub.2 X--S--S--A processes for their production and their use for crosslinking of reversion-stable rubber vulcanizates are provided. Crosslinking with reduced reversion and loss of elastomeric properties with age is achieved by the crosslinking system provided by the invention.
    Type: Grant
    Filed: August 11, 1993
    Date of Patent: October 25, 1994
    Assignee: Huls Aktiengesellschaft
    Inventors: Gerhard Horpel, Karl-Heinz Nordsiek
  • Patent number: 5326897
    Abstract: In a process for the stabilization of a solution of ethylmagnesium carbonate in ethanol, which has been prepared by the reaction of a suspension of magnesium ethylate in ethanol with carbon dioxide, 0.2 to 1.0% by weight of water, based on the ethylmagnesium carbonate solution, is added to the solution or its starting materials.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: July 5, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Erhard Jagers, Andreas Seidel, Karen Pottkamper
  • Patent number: 5189196
    Abstract: A prepolymer stabilization process for polyalkylene carbonate polyols includes the steps of adding a small quantity of an organosulfonic acid with stirring until base neutralization is achieved. One measure of base neutralization is a negative CPR, a test relating to controlled polymerization rate.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: February 23, 1993
    Assignee: The Dow Chemical Company
    Inventors: Anthony W. Mancusi, III, Samuel J. Washington