Patents by Inventor Margot Clauss

Margot Clauss 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).

  • Use of 2,2,6,6 tetraalkylpiperidine-N-oxyl radicals having long alkyl chains as polymerization regulators
    Patent number: 6864313
    Abstract: The present invention relates to a polymerizable composition, comprising a) at least one ethylenically unsaturated monomer or oligomer, b) a radical source capable of starting polymerization of the ethylenically unsaturated monomer or oligomer and c) at least one compound of formula (I) wherein n is 1 or 2 R3, R4, R9, R10 are each independently of one another C1-C18alkyl, C2-C18alkenyl or C2-C18alkinyl; or R3 and R4 and/or R9 and R10 form together with the linking carbon atom a C3-C12cycloalkyl radical; R5, R6, R7, R8 are each independently of one another hydrogen, C1-C18alkyl, C2-C18alkenyl or C2-C18alkinyl; X is —O—, —O—C(O)—, —NR2— or —NR2—C(O)—; R2 is hydrogen, C1-C18alkyl or phenyl; if n is 1, R1 is C8-C38alkyl, C8-C36alkenyl or C8-C36alkinyl if n is 2 R1 is C10-C38alkylen, C10-C36alkenylen or C10-C36alkinylen. Further objects of the present invention are a process for polymerization and the use of compounds of formula I for the polymerization of ethylenically unsaturated monomers.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: March 8, 2005
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Wiebke Wunderlich, Margot Clauss, Michael Roth, Francesco Fuso
  • Use of 2,2,6,6 tetraalkylpiperidine-N-oxyl radicals having long alkyl chains as polymerization regulators
    Publication number: 20030229177
    Abstract: The Present invention relates to a polymerizable composition, comprising
    Type: Application
    Filed: January 30, 2003
    Publication date: December 11, 2003
    Inventors: Wiebke Wunderlich, Margot Clauss, Michael Roth, Francesco Fuso
  • Use of 2,2,6,6 tetraalkylpiperidine-N-oxyl radicals having long alkyl chains as polymerization regulators
    Patent number: 6569940
    Abstract: The present invention relates to a polymerizable composition, comprising a) at least one ethylenically unsaturated monomer or oligomer, b) a radical source capable of starting polymerization of the ethylenically unsaturated monomer or oligomer and c) at least one compound of formula (I), wherein n is 1 or 2; R3, R4, R9, R10 are each independently of one another C1-C18alkyl, C2-C18alkenyl or C2-C18alkinyl; or R3 and R4 and/or R9 and R10 form together with the linking carbon atom a C3-C12cycloakyl radical; R5, R6, R7, R8 are each independently of one another hydrogen, C1-C18alkyl, C2-C18alkenyl or C2C18alkinyl; X is —O—, —O—C(O)—, —NR2— or —NR2—C(O)—; R2 is hydrogen, C1-C18alkyl or phenyl; if n is 1, R1 is C8-C36alkyl, C8-C36alkenyl or C8-C36alkinyl; if n is 2, R1 is C10-C36alkylen, C10-C36alkenylen or C10-C36alkinylen.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: May 27, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Wiebke Wunderlich, Margot Clauss, Michael Roth, Francesco Fuso
  • Polyether polyol and polyurethane compositions protected against oxidation and core scorching
    Patent number: 5869565
    Abstract: Described are compositions protected against thermal and oxidative degradation, comprisingA) a polyether polyol or mixtures of such polyols,B) at least one benzofuranone derivative of formula I ##STR1## wherein either two of R.sub.1, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 are each independently of the other C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, the others being hydrogen,orR.sub.7 to R.sub.10 are hydrogen, or at most two of these radicals are each independently of the other methyl or methoxy, and R.sub.1 is --O--CHR.sub.3 --CHR.sub.5 --O--CO--R.sub.6,R.sub.2 and R.sub.4 are each independently of the other hydrogen or C.sub.1 -C.sub.6 alkyl,R.sub.3 is hydrogen or C.sub.1 -C.sub.4 alkyl,R.sub.5 is hydrogen, phenyl or C.sub.1 -C.sub.6 alkyl, andR.sub.6 is C.sub.1 -C.sub.4 alkyl,C) at least one compound from group of the phenolic antioxidants, and/orD) at least one compound from group of the amino antioxidants of the secondary amine type.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: February 9, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Margot Clauss
  • Process for the preparation of stabilized styrene copolymers containing elastomer particles
    Patent number: 5288777
    Abstract: ABS copolymers and similar styrene or .alpha.-methylstyrene copolymers which contain an elastomer phase are stabilized against light-induced degradation by a) incorporation of a copolymerizable sterically hindered amine in, and b) addition of a non-copolymerizable sterically hindered amine to, the copolymer. Preferred sterically hindered amines are polyalkylpiperidines.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: February 22, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Bernard Gilg, Gerhard Rytz, Werner Stauffer, Margot Clauss
  • Stabilized styrene copolymers containing elastomer particles modified with a hindered amine
    Patent number: 5194465
    Abstract: ABS copolymers and similar styrene or .alpha.-methylstyrene copolymers with contain an elastomer phase are stabilized against light-induced degradation by a) incorporation of a copolymerizable sterically hindered amine in, and b) addition of a non-copolymerizable sterically hindered amine to, the copolymer. Preferred sterically hindered amines are polyalkylpiperidines.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: March 16, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: Bernard Gilg, Gerhard Rytz, Werner Stauffer, Margot Clauss