Patents by Inventor Reinhard Schliebs

Reinhard Schliebs 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 polycarbodiimide foams in the presence of phosphetane oxide or sulfide adducts
    Patent number: 3931059
    Abstract: A compound adapted to be used to advantage as a catalyst for making carbodiimide foams is prepared by a process whereinA. a phosphetane oxide or phosphetane sulphide of the general Formulae I and II: ##EQU1## wherein X represents a C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl, C.sub.6 -C.sub.14 aryl, C.sub.7 -C.sub.20 aralkyl, C.sub.1 -C.sub.18 alkoxy or C.sub.6 -C.sub.14 aroxy group andR.sup.1 to R.sup.6 represent hydrogen and/or C.sub.1 -C.sub.4 alkyl groups and is reacted withB. a mono-, di- and/or polyhydric alcohol having a molecular weight of about 32 to about 250, a protonic acid which has a pH of between 1 and 8 in N/10 aqueous solution, a metal salt or an acid chloride.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: January 6, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andrea La Spina, Werner Dietrich, Reinhard Schliebs