Patents by Inventor Burkhard John

Burkhard John 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 3-glycidyloxypropyltrialkoxysilanes
    Patent number: 10464954
    Abstract: A process can prepare a 3-glycidyloxypropylalkoxysilane of formula (I), (R?)O—(CH2)3—Si(OR)3 (I), where R groups are independently a methyl or ethyl group and R? represents an H2C(O)CHCH2— group. The process includes reacting (i) a functionalized alkene of formula (II), (R?)O—C3H5 (II), where R? represents an H2C(O)CHCH2— group, with (ii) at least one hydroalkoxysilane of formula (III), HSi(OR)3 (III), where R groups are independently a methyl or ethyl group. The reacting takes place in the presence of (iii) a Karstedt catalyst or a catalyst having hexachloroplatinic acid as a homogeneous catalyst, and (iv) 2-ethylhexanoic acid, isononanoic acid, or both. The process further includes obtaining a product of the reacting.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: November 5, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Markus Rudek, Susann Witzsche, Stefan Bade, Claudia Drescher, Burkhard John, Torsten Peterle
  • Process for preparing 3-glycidyloxypropyltrialkoxysilanes
    Publication number: 20190048031
    Abstract: A process can prepare a 3-glycidyloxypropylalkoxysilane of formula (I), (R?)O—(CH2)3—Si(OR)3 (I), where R groups are independently a methyl or ethyl group and R? represents an H2C(O)CHCH2— group. The process includes reacting (i) a functionalized alkene of formula (II), (R?)O—C3H5 (II), where R? represents an H2C(O)CHCH2— group, with (ii) at least one hydroalkoxysilane of formula (III), HSi(OR)3 (III), where R groups are independently a methyl or ethyl group. The reacting takes place in the presence of (iii) a Karstedt catalyst or a catalyst having hexachloroplatinic acid as a homogeneous catalyst, and (iv) 2-ethylhexanoic acid, isononanoic acid, or both. The process further includes obtaining a product of the reacting.
    Type: Application
    Filed: August 8, 2018
    Publication date: February 14, 2019
    Applicant: Evonik Degussa GmbH
    Inventors: Markus RUDEK, Susann Witzsche, Stefan Bade, Claudia Drescher, Burkhard John, Torsten Peterle