Patents by Inventor Doris Saal

Doris Saal 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).

  • Process for preparing N-methyl(meth)acrylamide
    Patent number: 11512043
    Abstract: The invention relates to a process for preparing N-methyl(meth)acrylamide and to the uses thereof.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: November 29, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Marcel Treskow, Doris Saal, Thorben Schütz, Steffen Krill
  • Method for preparing keto-functionalized aromatic (meth)acrylates
    Patent number: 11505520
    Abstract: The invention relates to a method for preparing keto-functionalized aromatic (meth)acrylates.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: November 22, 2022
    Assignee: Evonik Operations GmbH
    Inventors: Tim Bleith, Steffen Krill, Thorben Schütz, Doris Saal, Marcel Treskow
  • PROCESS FOR PREPARING N-METHYL(METH)ACRYLAMIDE
    Publication number: 20220112154
    Abstract: The invention relates to a process for preparing N-methyl(meth)acrylamide and to the uses thereof.
    Type: Application
    Filed: July 16, 2019
    Publication date: April 14, 2022
    Inventors: Marcel Treskow, Doris SAAL, Thorben SCHÜTZ, Steffen KRILL
  • METHOD FOR PREPARING KETO-FUNCTIONALIZED AROMATIC (METH)ACRYLATES
    Publication number: 20210214297
    Abstract: The invention relates to a method for preparing keto-functionalized aromatic (meth)acrylates.
    Type: Application
    Filed: May 21, 2019
    Publication date: July 15, 2021
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Tim Bleith, Steffen KRILL, Thorben SCHÜTZ, Doris SAAL, Marcel TRESKOW
  • Method for producing methacrylated benzophenones
    Patent number: 9656941
    Abstract: The invention relates to a process for preparing methacrylic esters of hydroxyl-functional benzophenones and to their use. Methacrylated benzophenones (benzophenone (meth)acrylates) can be prepared in high purity by the process of the invention, in a simple way and in a high yield.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: May 23, 2017
    Assignee: Evonik Roehm GmbH
    Inventors: Wolfgang Klesse, Joachim Knebel, Doris Saal
  • METHOD FOR PRODUCING METHACRYLATED BENZOPHENONES
    Publication number: 20160297738
    Abstract: The invention relates to a process for preparing methacrylic esters of hydroxyl-functional benzophenones and to their use. Methacrylated benzophenones (benzophenone (meth)acrylates) can be prepared in high purity by the process of the invention, in a simple way and in a high yield.
    Type: Application
    Filed: September 29, 2014
    Publication date: October 13, 2016
    Applicant: EVONIK ROEHM GmbH
    Inventors: Wolfgang KLESSE, Joachim KNEBEL, Doris SAAL
  • Method for synthesis and process inhibition of isobornyl (meth)acrylate
    Patent number: 6479696
    Abstract: Isobornyl (meth)acrylate is synthesized by a two-stage one-pot process, wherein isobornyl acetate is converted to isoborneol followed by transesterification with (meth)acrylic acid methyl ester, without isolation of the intermediates or purification of the product.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: November 12, 2002
    Assignee: Roehm GmbH & Co KG
    Inventors: Joachim Knebel, Doris Saal
  • Process for synthesis of isobornyl (Meth) acrylate
    Patent number: 6329543
    Abstract: The present invention relates to processes for synthesis of isobornyl (meth)acrylate by reacting camphene with (meth)acrylic acid in the presence of sulfuric acid and at least one compound having inhibiting action. Aqueous sulfuric acid with an acid concentration in the range of 65 to 85 wt % is used. Isobornyl (meth)acrylate can advantageously be distilled from a mixture containing sulfuric acid in the presence of 2,6-di-tert-butyl-&agr;-(dialkylamino)-p-cresol.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: December 11, 2001
    Assignee: Roehm GmbH & Co KG
    Inventors: Joachim Knebel, Doris Saal