Patents by Inventor Gerhard Rytz

Gerhard Rytz 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).

  • Publication number: 20130280518
    Abstract: The invention relates to a building material (M2), which can be produced by combining 30 to 70% by weight of a cement or respectively hydraulic binder, 20 to 80% by weight of water and 0.05 to 15% by weight of a porous and/or pore-forming material; or by combining 10 to 80% by weight of a cement or respectively hydraulic binder, 10 to 80% by weight of a pulverulent and/or granular mineral filler, 20 to 80% by weight of water and 0.05 to 15% by weight of a porous and/or pore-forming material; and in each case by subsequent mixing of the combined components for 1 to 15 minutes. The invention furthermore relates to a building system element (1; 2) with a first section (11; 21) containing particularly compact solid particles distributed in a hardened cement matrix (M1) and fixed thereby, and with a second section (12; 22) containing pores distributed in a hardened cement matrix (M2). This second section (12; 22) can be composed of the building material (M2) according to the invention.
    Type: Application
    Filed: June 17, 2011
    Publication date: October 24, 2013
    Applicant: VICAT
    Inventors: Beat Stähli, Gerhard Rytz, Beat Ruchti
  • Patent number: 6706215
    Abstract: Coatings comprising A) a binder based on an organic polymer and B) as stabilizer against damage by light, heat and oxygen, a 2-(2′-hydroxyphenyl)-1,3-pyrimidine of the formula I  in which the radicals R1 to R6 are as defined in claim 1 have an outstanding resistance to the damaging effects of light, oxygen and heat. Compounds of the formula Ib defined in claim 18 are suitable in general for the stabilization of organic material.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: March 16, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Andreas Valet, Jean-Luc Birbaum, Gerhard Rytz, Norbert Wüms
  • Patent number: 6455442
    Abstract: This invention relates to a process for the preparation of UV protective coatings by plasma-enhanced vacuum deposition, using hydroxyphenyl-s-triazines as UV absorbers. This invention also relates to the use of hydroxyphenyl-s-triazines in plasma-enhanced vacuum depositions and to the substrates coated by this process.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: September 24, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Michael Bauer, Werner Kaufmann, Gerhard Rytz
  • Patent number: 6284821
    Abstract: A description is given of compounds of the formula I in which R1 is C1-C18alkyl; C5-C12cycloalkyl; C3-C6alkenyl; phenyl; C1-C18alkyl which is substituted by phenyl, OH, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C18alkenyloxy, halogen, —COOH, —COOR4, —O—CO—R5, —O—CO—O—R6, —CO—NH2, —CO—NHR7, —CO—N(R7)(R8), CN, NH2, NHR7, —N(R7)(R8), —NH—CO—R5, phenoxy, C1-C18alkyl-substituted phenoxy, phenyl-C1-C4alkoxy, C6-C15bicycloalkoxy, C6-C15bicycloalkylalkoxy, C6-C15bicycloalkenylalkoxy, or C6-C15tricycloalkoxy; C5-C12cycloalkyl which is substituted by OH, C1-C4alkyl, C2-C6alkenyl or —O—CO—R5; glycidyl; —CO—R9 or —SO2—R10; or R1 is C3-C50alkyl which is interrupted by one or more oxygen atoms and/or substituted by OH, phenoxy or C7-C18alkylphenoxy; or R1 denotes the specific polymerizable radicals indicated in claim 1; R2 is C6-C18alky1; C2-C6alkenyl; p
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: September 4, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Dietmar Hüglin, Vien Van Toan, Helmut Luther, Christophe Bulliard, Gerhard Rytz
  • Patent number: 6184375
    Abstract: A description is given of compounds of the formula I in which R1 is C1-C18alkyl; C5-C12cycloalkyl; C3-C6alkenyl; phenyl; C1-C18alkyl which is substituted by phenyl, OH, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C18alkenyloxy, halogen, —COOH, —COOR4, —O—CO—R5, —O—CO—O—R6, —CO—NH2, —CO—NHR7, —CO—N(R7)(R8), CN, NH2, NHR7, —N(R7)(R8), —NH—CO—R5, phenoxy, C1-C18alkyl-substituted phenoxy, phenyl-C1-C4alkoxy, C6-C15bicycloalkoxy, C6-C15bicycloalkylalkoxy, C6-C15bicycloalkenylalkoxy, or C6-C15tricycloalkoxy; C5-C12cycloalkyl which is substituted by OH, C1-C4alkyl, C2-C6alkenyl or —O—CO—R5; glycidyl; —CO—R9 or —SO2—R10; or R1 is C3-C50alkyl which is interrupted by one or more oxygen atoms and/or substituted by OH, phenoxy or C7-C18alkylphenoxy; or R1 denotes the specific polymerizable radicals indicated in claim 1; R2 is C6-C18alkyl; C2-C6alkenyl; p
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: February 6, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Dietmar Hüglin, Vien Van Toan, Helmut Luther, Christophe Bulliard, Gerhard Rytz
  • Patent number: 5869588
    Abstract: The invention relates to novel 2-hydroxyphenyltriazines and to homopolymers and copolymers obtainable therefrom, as described in greater detail in claims 1 and 5; the novel compounds can be used as UV absorbers in or for organic materials.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: February 9, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Vien Van Toan, David George Leppard, Gerhard Rytz, Norbert Wurms, Pascal Hayoz
  • Patent number: 5804622
    Abstract: A stabilizer combination, principally for PVC, is described, comprising A at least one zinc carboxylate B at least one compound of the formula ##STR1## in which R.sub.1 to R.sub.6 are as defined in claim 1.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: September 8, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Horst Zinke, Wolfgang Wehner, Karl Josef Kuhn, Valerio Borzatta, Gerhard Rytz
  • Patent number: 5753729
    Abstract: Coatings comprisingA) a binder based on an organic polymer andB) as stabilizer against damage by light, heat and oxygen, a 2-(2'-hydroxyphenyl)-1,3-pyrimidine of the formula I ##STR1## in which the radicals R.sub.1 to R.sup.6 are as defined in claim 1 have an outstanding resistance to the damaging effects of light, oxygen and heat. Compounds of the formula Ib defined in claim 18 are suitable in general for the stabilization of organic material.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: May 19, 1998
    Inventors: Andreas Valet, Jean-Luc Birbaum, Gerhard Rytz, Norbert Wurms
  • Patent number: 5672704
    Abstract: s-Triazine UV absorbers of formula I ##STR1## where R.sub.1 is ##STR2## --CH.sub.2 --C(.dbd.CH.sub.2)--R.sub.10, --(CH.sub.2).sub.p --SiR.sub.11 R.sub.11 '--CH.dbd.CH.sub.2, --C(.dbd.O)--(CH.sub.2).sub.q --CH.dbd.CH.sub.2 or --C(.dbd.O)--O--CH.sub.2 --C(.dbd.CH.sub.2)--R.sub.10 ; and E.sub.1 and E.sub.2 are phenyl groups which may be unsubstituted or substituted with a variety of substituents including inter alia alkyl, OH and R.sub.1 ; are polymerizable and are effective stabilizers for a variety of polymeric and other organic substrates.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: September 30, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Vien Van Toan, David George Leppard, Gerhard Rytz, Norbert Wurms, Pascal Hayoz
  • Patent number: 5668200
    Abstract: A mixture comprising a compound of the formula I and a compound of the formula II ##STR1## in which n is 1 or 2; R.sub.1, R'.sub.1, R.sub.2, R'.sub.2, R.sub.3 and R.sub.4, independently of one another, are H, C.sub.1 -C.sub.12 alkyl; C.sub.2 -C.sub.6 alkenyl; C.sub.1 -C.sub.12 alkoxy; C.sub.2 -C.sub.18 alkenoxy; halogen; trifluoromethyl; C.sub.7 -C.sub.11 phenylalkyl; phenyl; phenyl which is substituted by C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkoxy or halogen; phenoxy; or phenoxy which is substituted by C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkoxy or halogen;R.sub.6 is hydrogen, C.sub.1 -C.sub.24 alkyl, C.sub.5 -C.sub.12 cycloalkyl or C.sub.7 -C.sub.15 phenylalkyl;R.sub.7, in the case where n=1, and R'.sub.7, independently of one another, are hydrogen or C.sub.1 -C.sub.18 alkyl; or are C.sub.1 -C.sub.12 alkyl which is substituted by OH, C.sub.1 -C.sub.18 alkoxy, allyloxy, halogen, --COOH, --COOR.sub.8, --CONH.sub.2, --CONHR.sub.9, --CON(R.sub.9)(R.sub.10), --NH.sub.2, --NHR.sub.9, --N(R.sub.9)(R.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: September 16, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Andreas Valet, Gerhard Rytz, Pascal Hayoz
  • Patent number: 5597854
    Abstract: The invention relates to compounds of the formula I ##STR1## in which n is 1 or 2, A is CH or a nitrogen atom, and the other radicals R.sup.1 to R.sup.25 are as defined in claim 1.The compounds of the formula I can advantageously be employed for stabilizing organic material against the harmful effect of light, oxygen and/or heat.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: January 28, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Jean-Luc Birbaum, Gerhard Rytz, Vien Van Toan, Andreas Valet, Norbert W urms
  • Patent number: 5538840
    Abstract: The invention relates to a photographic recording material comprising, on a base, at least one silver-halide emulsion layer and, if desired, at least one interlayer and/or a protection layer, where at least one of said layers contains a UV absorber of the 2-hydroxyphenyltriazine type, as described in greater detail in claim 1; this UV absorber can also be in the form of a homopolymer or copolymer.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: July 23, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Vien Van Toan, David G. Leppard, Gerhard Rytz, Norbert Wurms, Pascal Hayoz
  • 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
  • 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
  • Patent number: 5135986
    Abstract: Copolymers of styrene or a-methylstyrene and at least one comonomer, containing crosslinked elastomer particles, can be light-stabilized by modifying the elastomer particles by copolymerization with a suitable derivative of a sterically hindered amine. The modification is preferably carried out by graft polymerization, the elastomer used preferably being polybutadiene.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: August 4, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Rolf Mulhaupt, Bernard Gilg, Gerhard Rytz, Mario Slongo
  • Patent number: 5059689
    Abstract: Compounds which contain at least one group of the formula I ##STR1## in which X is a group which completes the ring to form a piperidine ring, are effective stabilizers for organic materials against damage by light, oxygen and heat.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: October 22, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Jean Rody, Gerhard Rytz, Mario Slongo
  • Patent number: 4942238
    Abstract: Compounds of formula I ##STR1## wherein R is hydrogen, methyl or cyano, and R' is hydrogen, C.sub.1 -C.sub.8 alkyl or phenyl, are suitable for copolymerization with ethylenically unsaturated monomers to form crosslinked copolymers which are stabilized against light.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: July 17, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Gerhard Rytz, Mario Slongo