Patents by Inventor Andre NEHLS

Andre NEHLS 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 esterifying silicon-halogen compounds in a column and apparatus suitable therefor
    Patent number: 9340560
    Abstract: What is described is a process for continuously esterifying halosilanes of the formula I with alcohols of the formula II to give silane esters of the formula III in a single column (1) R1aSiHalb??(I) R2—(OH)??(II) R1aS—(OR2)b??(III) in which R1 is hydrogen or a monovalent organic radical, where any two R1 radicals within a molecule may be different within the scope of the given definitions, Hal is a halogen atom, a plurality of Hal atoms within a molecule may be different within the scope of the given definitions, R2 is a monovalent organic radical, a and b are integers from 0 to 4 and the sum total of a and b is 4, comprising the measures of: i) feeding the total amount of the halosilane of the formula I required for the reaction in liquid form through line (6) into the upper third of the column (1), ii) feeding at least 60% by weight of the alcohol of the formula II required for the reaction in liquid form through line (7) into the upper third of the column (1), iii) feeding the remainder of the a
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: May 17, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Stefan Bade, Norbert Schladerbeck, Andre Nehls
  • PROCESS FOR ESTERIFYING SILICON-HALOGEN COMPOUNDS IN A COLUMN AND APPARATUS SUITABLE THEREFOR
    Publication number: 20150353586
    Abstract: What is described is a process for continuously esterifying halosilanes of the formula I with alcohols of the formula II to give silane esters of the formula III in a single column (1) R1aSiHalb ??(I) R2—(OH) ??(II) R1aS—(OR2)b ??(III) in which R1 is hydrogen or a monovalent organic radical, where any two R1 radicals within a molecule may be different within the scope of the given definitions, Hal is a halogen atom, a plurality of Hal atoms within a molecule may be different within the scope of the given definitions, R2 is a monovalent organic radical, a and b are integers from 0 to 4 and the sum total of a and b is 4, comprising the measures of: i) feeding the total amount of the halosilane of the formula I required for the reaction in liquid form through line (6) into the upper third of the column (1), ii) feeding at least 60% by weight of the alcohol of the formula II required for the reaction in liquid form through line (7) into the upper third of the column (1), iii) feeding the remainder
    Type: Application
    Filed: January 16, 2014
    Publication date: December 10, 2015
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Stefan BADE, Norbert SCHLADERBECK, Andre NEHLS