Patents by Inventor Gerd Klein

Gerd Klein 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).

  • Free-flowing urea resin compositions with silane or siloxane additive added before hardening
    Patent number: 4045385
    Abstract: A process for improving the free-flowing qualities of a urea formaldehyde resin which comprises adding to said resin:A. a polyorganosiloxane having recurring units of the formulaX(R).sub.a SiO.sub.3-a/2whereinX is alkyl, alkylene or a hydrocarbon having a functional group;R is hydrogen, alkyl, alkoxy or aryl;a is a value from 0 to 2, or a hydrolysis product thereof;OrB. a silane of the formula Y--A.sub.n --Si(R").sub.b (OR').sub.3-bWhereinY is a substituted or unsubstituted amino, carboxyl, glycidyl, mercapto or alkenyl group;A is a bivalent straight or branched-chained alkylene radical which can contain oxygen in the chain;R' is an alkyl or hydroxyalkyl radical;R" is a C.sub.1 -C.sub.4 alkyl radical;n is 0 or 1; andb is 0, 1 or 2, or a hydrolysis product thereof.
    Type: Grant
    Filed: November 13, 1975
    Date of Patent: August 30, 1977
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Gerd Klein, Kurt Schmoll