Patents by Inventor Sandra Bachmaier

Sandra Bachmaier 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 diorganopolysiloxanes
    Patent number: 7683198
    Abstract: Mono-hydroxyl-functional organopolysiloxanes are prepared with minimal byproducts and increased storage stability by reaction of cyclotrisiloxanes with sil(ox)anols containing less than 1 weight percent water in the presence of heterogenous alkali metal or alkaline earth metal oxide or carbonate catalysts.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: March 23, 2010
    Assignee: Wacker Chemie AG
    Inventors: Oliver Schaefer, Sandra Bachmaier
  • Polyester-Polysiloxane Copolymers and Process for their Preparation
    Publication number: 20080255317
    Abstract: Polyester/polysiloxane copolymers are prepared by ring-opening synthesis of hydroxyalkyl- or aminoalkyl functional organopolysiloxanes from a cyclic silazane and an Si—OH functional polysiloxane, followed by reaction with a cyclic lactone such as a caprolactone. The process tolerates functional groups on the polysiloxane segments which are not possible in other synthetic methods.
    Type: Application
    Filed: October 13, 2006
    Publication date: October 16, 2008
    Applicant: WACKER CHEMIE AG
    Inventors: Oliver Schaefer, Sandra Bachmaier
  • Process for Preparing Diorganopolysiloxanes
    Publication number: 20080167487
    Abstract: Mono-hydroxyl-functional organopolysiloxanes are prepared with minimal byproducts and increased storage stability by reaction of cyclotrisiloxanes with sil(ox)anols containing less than 1 weight percent water in the presence of heterogenous alkali metal or alkaline earth metal oxide or carbonate catalysts.
    Type: Application
    Filed: May 11, 2006
    Publication date: July 10, 2008
    Applicant: WACKER CHEMIE AG
    Inventors: Oliver Schaefer, Sandra Bachmaier