With Preservative Or Stabilizer Patents (Class 558/261)
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Publication number: 20140024850Abstract: 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: ApplicationFiled: September 20, 2013Publication date: January 23, 2014Applicant: LANXESS Deutschland GmbHInventors: Steffen KAHLERT, Johannes KAULEN, Erasmus VOGL
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Patent number: 8466308Abstract: 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: GrantFiled: May 29, 2012Date of Patent: June 18, 2013Assignee: LANXESS Deutschland GmbHInventors: Steffen Kahlert, Johannes Kaulen, Erasmus Vogl
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Publication number: 20120237650Abstract: 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: ApplicationFiled: May 29, 2012Publication date: September 20, 2012Applicant: LANXESS DEUTSCHLAND GMBHInventors: Steffen Kahlert, Johannes Kaulen, Erasmus Vogl
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Patent number: 8207368Abstract: 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: GrantFiled: April 11, 2007Date of Patent: June 26, 2012Assignee: LANXESS Deutschland GmbHInventors: Steffen Kahlert, Johannes Kaulen, Erasmus Vogl
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Publication number: 20100069658Abstract: 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: ApplicationFiled: April 11, 2007Publication date: March 18, 2010Applicant: LANXESS DEUTSCHLAND GMBHInventors: Steffen Kahlert, Johannes Kaulen, Erasmus Vogl
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Publication number: 20090216038Abstract: 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: ApplicationFiled: May 4, 2006Publication date: August 27, 2009Inventors: Reinhard Langer, Paul Wagner, Heinrich Grzinia
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Publication number: 20090140208Abstract: 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: ApplicationFiled: May 7, 2007Publication date: June 4, 2009Applicant: LANXESS Deutschland GmbHInventors: Johannes Kaulen, Erasmus Vogl
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Patent number: 7214812Abstract: The invention relates to a stabilized peroxydicarbonate preparation and its use in the polymerization or copolymerization of ethylenically unsaturated compounds.Type: GrantFiled: June 26, 2002Date of Patent: May 8, 2007Assignee: Peroxid-Chemie GmbH & Co. KGInventors: Eberhard Hägel, Martin Kunz, Werner Zeiss
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Patent number: 6992225Abstract: 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: GrantFiled: April 30, 2002Date of Patent: January 31, 2006Assignee: ArkemaInventors: Sandra Grimaldi, Olivier Guerret, Jean-Luc Couturier, Fabien Debaud
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Patent number: 6846888Abstract: 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: GrantFiled: March 21, 2002Date of Patent: January 25, 2005Assignee: ATOFINA Chemicals, Inc.Inventors: Barbara L. Stainbrook, Michael S. Mendolia, Terry N. Myers, Peter A. Callais, Joseph M. Brennan
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Publication number: 20040162438Abstract: The invention relates to a stabilized peroxydicarbonate preparation and its use in the polymerization or copolymerization of ethylenically unsaturated compounds.Type: ApplicationFiled: December 19, 2003Publication date: August 19, 2004Inventors: Eberhard Hagel, Martin Kunz, Werner Zeiss
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Patent number: 6399728Abstract: 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: GrantFiled: October 17, 2001Date of Patent: June 4, 2002Assignee: ATOFINA Chemicals, Inc.Inventors: Barbara L. Stainbrook, Michael S. Mendolia, Terry N. Myers, Peter A. Callais, Joseph M. Brennan
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Patent number: 5892090Abstract: 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: GrantFiled: February 27, 1998Date of Patent: April 6, 1999Assignee: Witco CorporationInventor: Peter Frenkel
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Patent number: 5654463Abstract: Organic peroxide compositions which contain an .alpha.-hydroxyalkyl peroxide compound to retard the rate of decomposition of the peroxide compound are disclosed.Type: GrantFiled: May 31, 1996Date of Patent: August 5, 1997Assignee: Witco CorporationInventors: Charles Abma, Peter Frenkel
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Patent number: 5654464Abstract: Organic peroxide compositions which contain a cyclic .alpha.-diketone compound to retard the rate of decomposition of the peroxide compound are disclosed.Type: GrantFiled: May 31, 1996Date of Patent: August 5, 1997Assignee: Witco CorporationInventors: Charles Abma, Peter Frenkel, Lawrence Bock
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Patent number: 5359003Abstract: 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: GrantFiled: August 11, 1993Date of Patent: October 25, 1994Assignee: Huls AktiengesellschaftInventors: Gerhard Horpel, Karl-Heinz Nordsiek
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Patent number: 5326897Abstract: 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: GrantFiled: March 1, 1993Date of Patent: July 5, 1994Assignee: Hoechst AktiengesellschaftInventors: Erhard Jagers, Andreas Seidel, Karen Pottkamper
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Patent number: 5189196Abstract: 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: GrantFiled: August 15, 1991Date of Patent: February 23, 1993Assignee: The Dow Chemical CompanyInventors: Anthony W. Mancusi, III, Samuel J. Washington