Patents by Inventor Horst Ro/ schert

Horst Ro/ schert 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 2,2'-bis(halomethyl)-1,1'-binaphthyl
    Patent number: 5502261
    Abstract: The present invention relates to a process for preparing 2,2'-bis(halomethyl)-1,1'-binaphthyl, by reacting 2,2'-dimethyl-1,1'-binaphthyl in the presence of a solvent with a halogenating agent under the action of light having a wavelength of from 10.sup.-5 to 10.sup.-8 m in the presence or absence of a free-radical former at from -10.degree. to 120.degree. C.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: March 26, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans-Jerg Kleiner, Dieter Regnat, Horst Ro/ schert