Patents by Inventor Ralf Schnelle

Ralf Schnelle 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).

  • Polyoxyalkylene-polysiloxane block polymers, a process for preparing them and their use as defoamers in aqueous dispersions
    Patent number: 8022150
    Abstract: The invention relates to the polyoxyalkylene-polysiloxane block polymers of general formula (I) C—B—(AB)a—C1 (I), wherein A=a polyoxyalkylene block of the general formula —(CnH2nO)b—, B=a polysiloxane block of the general formula —(SiR2—O)c—, C, C1=the same or different alkoxypolyoxyalkylene groups of the general formula Z—O—[CH2—CH(R1)O]d—, R=the same or different C1-4 alkyl groups or phenyl groups, with the proviso that at least 90% of the groups R are methyl groups, R1=the same or different hydrogen, C1-12 alkyl groups or phenyl groups, Z=an alkyl, alkylene, aryl or alkylaryl group, a=1 to 20, preferably 2 to 10, b=an average value of 10 to 130, preferably 20 to 100, c=3 to 100, preferably 10 to 80, d=independently is in the range of C/C1 values of 2 to 20, preferably 2 to 12, with the proviso that the average value is in the range of 2 to <15, preferably 2 to 12, especially 5 to 10, and d is preferably unequal b, n=2 to 12 having an average value of 2.7 to 4.0.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: September 20, 2011
    Assignee: Evonik Goldschmidt GmbH
    Inventors: Eberhard Esselborn, Ralf Schnelle, Roland Sucker, Otto Klocker
  • POLYOXYALKYLENE-POLYSILOXANE BLOCK POLYMERS, A PROCESS FOR PREPARING THEM AND THEIR USE AS DEFOAMERS IN AQUEOUS DISPERSIONS
    Publication number: 20100029861
    Abstract: The invention relates to the polyoxyalkylene-polysiloxane block polymers of general formula (I) C-B-(AB)a-C1 (I), wherein A=a polyoxyalkylene block of the general formula —(CnH2nO)b—, B=a polysiloxane block of the general formula —(SiR2—O)c—, C, C1=the same or different alkoxypolyoxyalkylene groups of the general formula Z-O—[CH2—CH(R1)O]d—, R=the same or different C1-4 alkyl groups or phenyl groups, with the proviso that at least 90% of the groups R are methyl groups, R1=the same or different hydrogen, C1-12alkyl groups or phenyl groups, Z=an alkyl, alkylene, aryl or alkylaryl group, a=1 to 20, preferably 2 to 10, b=an average value of 10 to 130, preferably 20 to 100, c=3 to 100, preferably 10 to 80, d=independently is in the range of C/C1 values of 2 to 20, preferably 2 to 12, with the proviso that the average value is in the range of 2 to <15, preferably 2 to 12, especially 5 to 10, and d is preferably unequal b, n=2 to 12 having an average value of 2.7 to 4.0.
    Type: Application
    Filed: October 30, 2007
    Publication date: February 4, 2010
    Inventors: Eberhard Esselborn, Ralf Schnelle, Roland Sucker, Otte Klocker
  • Emulsifier-free oil-in-water emulsions of organopolysiloxanes and the use thereof in technical applications
    Publication number: 20050107523
    Abstract: The invention relates to emulsifier-free oil-in-water emulsions of organopolysiloxanes and the use thereof in technical applications.
    Type: Application
    Filed: November 16, 2004
    Publication date: May 19, 2005
    Inventors: Michael Gippert, Ralf Schnelle, Stefan Silber, Roland Sucker, Dirk Wolfgram