Patents Represented by Attorney JoAnn Villamizar
  • Patent number: 5167846
    Abstract: Sulfoxides of bisthiomethylated and tristhiomethylated phenols of formulae I and II ##STR1## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.18 alkyl, cyclohexyl or C.sub.7 -C.sub.9 phenylalkyl,R.sub.2 and R.sub.3 are each independently of the other hydrogen or methyl,R.sub.4 is C.sub.4 -C.sub.18 alkyl, phenyl, C.sub.7 -C.sub.9 phenylalkyl, C.sub.1 -C.sub.4 alkyl-substituted phenyl,hydroxyethyl or a radical --(CH.sub.2).sub.r COOR.sub.5, wherein r is 1 or 2 and R.sub.5 is C.sub.1 -C.sub.18 alkyl,Z is sulfur ##STR2## wherein R.sub.2 and R.sub.3 are as defined above, or are a direct bond, and n, m and p are each independently of one another 0 or 1, and mixtures thereof with the corresponding non-oxidized compounds, are suitable stabilizers for materials which are sensitive to oxidative, thermal and/or light-induced degradation.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: December 1, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans-Rudolf Meier, Rita Pitteloud
  • Patent number: 5166383
    Abstract: Compounds of general formula I ##STR1## wherein R.sup.2 is hydrogen unsubstituted C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkyl substituted by --OH, --CN or by --Si(OR.sup.3).sub.3-q R.sup.4.sub.q, or C.sub.2 -C.sub.6 alkenyl,R.sup.3 is C.sub.1 -C.sub.4 alkyl, or two radicals R.sup.3 together are C.sub.1 -C.sub.4 alkylene,R.sup.4 is C.sub.1 -C.sub.4 alkyl or phenyl, andq is from 0 to 2, andE is a radical of the formula ##STR2## wherein R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl andR.sup.6 is hydrogen, orR.sup.5 and R.sup.6 together are C.sub.4 -C.sub.8 alkylene, orandA is --(CH.sub.2).sub.r --O--, wherein r is 1,2 or 3, and p is 0 or 1, andY is oxygen or sulfur; andwhereinT is a radical --R.sup.9 --Si(OR.sup.3).sub.3-q R.sup.4.sub.q, a radical of the formula ##STR3## X is --S-- or --NH--, and Z is an organic radical derived from a polyisocyanate or polyisothiocyanate having at least 2 NCO or NCS groups, respectively,are suitable as adhesion promoters, especially for moisture-curing polyurethane resins.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: November 24, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Giovanni Parrinello, Hubert Simon, Rolf Mulhaupt
  • Patent number: 5166405
    Abstract: Polymers suitable for use as positive photoresists can be prepared, in the absence or presence of other olefinically unsaturated monomers, from benzoates comprising an olefinic unsaturated substituent and consisting of formula I ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other a hydrogen atom, C.sub.1 -C.sub.4 alkyl or phenyl, R.sub.3 is a hydrogen atom, methyl or a halogen atom, R.sub.4 is a hydrogen atom or methyl, R.sub.5 is C.sub.1 -C.sub.4 alkyl or C.sub.6 -C.sub.12 aryl, and R.sub.6 and R.sub.7 are each independently of the other a hydrogen atom, C.sub.1 -alkyl or C.sub.6 -C.sub.12 aryl, and R.sub.5 and R.sub.7, when taken together, may also be an unsubstituted or a C.sub.1 -C.sub.4 alkyl-, C.sub.1 -C.sub.4 alkoxy-, C.sub.6 -C.sub.12 aryl- or C.sub.6 -C.sub.12 aryloxy-substituted ethylene, propylene or butylene radical.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: November 24, 1992
    Assignee: Ciba-Geigy Corporation
    Inventor: Alfred Steinmann
  • Patent number: 5162547
    Abstract: An improved process for the preparation of glycidyl ethers of formula I ##STR1## wherein Q is an aliphatic, cycloaliphatic or araliphatic radical of a valency m, R is --H or --CH.sub.3, and m is an integer from 1 to 10,by reacting an alcohol of formula Q--(OH).sub.m with m mol of an epihalohydrin of formula II ##STR2## in the presence of a catalyst to the corresponding halohydrin ether, and dehydrohalogenating said halohydrin ether with an alkali metal hydroxide to give a compound of formula I, wherein Q, m and R are as defined above and Hal is halogen,which process comprises using as catalysta) tin difluoride orb) a divalent tin halide in conjunction with a co-catalyst.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: November 10, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Martin Roth, Heinz Wolleb, Marc-Andre Truffer
  • Patent number: 5155152
    Abstract: The compounds of formula I ##STR1## wherein n is 1 or 2, R.sub.1 is C.sub.1 -C.sub.4 alkyl, R.sub.2 and R.sub.3 are, for example, alkanoyl or alkanoyloxy or R.sub.3 may also be, for example, alkanedioyl, are suitable for stabilizing chlorine-containing polymers against thermal and light-induced degradation.Some of the compounds of formula I are novel.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: October 13, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Wolfgang Wehner, Hermann O. Wirth
  • Patent number: 5152862
    Abstract: Imidazoline compounds of formula ##STR1## where n denotes 2 or 3, is suitable as cure accelerator in curable epoxide resin compositions comprising a latent curing agent.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: October 6, 1992
    Assignee: Ciba-Geigy Corporation
    Inventor: Madan M. Bagga
  • Patent number: 5153303
    Abstract: Fully cyclized polyimides based on aromatic tetracarboxylic acid dianhydrides with substitution in the positions ortho to the bridging moiety and aromatic diamines, exhibiting solubility in organic solvents, increased glass transition temperatures, low coefficients of thermal expansion and photoimagability; said polyimides being suitable for the production of films, protective coatings and photolithographic relief images.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: October 6, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Stanley J. Jasne, Pasquale A. Falcigno
  • Patent number: 5151129
    Abstract: A process for the production of a pigment composition comprising precipitating a pigment coupling component from alkaline solution by adding to it an acid, in the presence of a pre-formed, water-soluble azo dyestuff; and subsequently coupling the precipitated coupling component, containing the azo dyestuff, with a pigment diazo or tetrazo component, ensuring that at no time is any substantial amount of uncoupled diazo or tetrazo component present, to form a pigment composition containing the water-soluble azo dyestuff.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: September 29, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Donald J. Morrison, David McGregor, James M. McCrae
  • Patent number: 5151318
    Abstract: Self-adhesive reinforcing material comprisinga) a UV-transparent plastic film to whichb) a woven fabric impregnated with a partially acrylate-modified epoxy resin is applied which, on the side facing away from the film a), is coated withc) a layer of an epoxy resin which again is partially acrylate-modified, the resins of b) and c) being converted by UV irradiation to a gelled state which can be further cured by heat, and containing a heat-activatable hardener component, andd) a release paper applied to the side opposite the film a), is very suitable for reinforcing sheet metal.
    Type: Grant
    Filed: May 16, 1990
    Date of Patent: September 29, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Dieter Strasilla, Richard Stossel, Rolf Mulhaupt, Ursula Kreibich
  • Patent number: 5149841
    Abstract: A process for the preparation of compounds of the formula I ##STR1## in which R is glycidyl, R.sub.1 and R.sub.3 independently of one another are C.sub.1 -C.sub.6 alkyl and R.sub.2 and R.sub.4 independently of one another are hydrogen or methyl, wherein(i) a diamine of the formula II ##STR2## in which R.sub.1,R.sub.2,R.sub.3 and R.sub.4 are as defined above, is reacted with epichlorohydrin in a molar ratio of 1:12 to 1:40 at a temperature of 80.degree. to 115.degree. C. and(ii) a phase transfer catalyst is mixed with the reaction mixture, the epichlorohydrin is subjected to distillation while being circulated and at the same time the dehydrochlorination is carried out with the addition of a concentrated, aqueous alkali metal of alkaline earth metal hydroxide solution and simultaneous removal of the water distilled off azeotropically.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: September 22, 1992
    Assignee: Ciba-Geigy Corporation
    Inventor: Werner Schaffner
  • Patent number: 5147870
    Abstract: The invention relates to the preparation of substituted azacyclohexyl derivatives of rifamycins of the formula ##STR1## and salts thereof in which R.sub.1 is hydrogen or trialkylacetyl, R.sub.2 is hydrogen or acetyl and R.sub.3 is alkyl, which exhibit valuable pharmacological properties.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: September 15, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Wilhelm Kump, Keith A. Menear
  • Patent number: 5145944
    Abstract: Polyether-polyester block copolymers obtainable by anionic copolymerization of a monoepoxy compound with a cyclic anhydride of an aromatic dicarboxylic acid using an alkali metal salt of a polyalkylene glycol or of a polyalkylene glycol monoalkyl ether as initiator are suitable as dispersants, especially for the preparation of aqueous epoxy resin dispersions and emulsions. Coatings made with these dispersions with the addition of hardeners are distinguished by improved surface-coating properties.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: September 8, 1992
    Assignee: Ciba-Geigy Corporation
    Inventor: Bettina Steinmann
  • Patent number: 5144333
    Abstract: Process for the storage of information in an organic recording layer which, as the result of local treatment of its surface with an organic solvent in accordance with the shape of the information to be marked can alter its absorption spectrum and/or its photoconductivity in such a way that information is produced and stored respectively at the treated areas of this layer. The information thus stored can be read off visually, by means of a micro-reader or by means of an incorporated electrode system.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: September 1, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Jin Mizuguchi, Alain C. Rochat
  • Patent number: 5143999
    Abstract: Hardenable mixtures of materials, comprising(a) an epoxide resin,(b) a dithiol of the formula I or II ##STR1## in which the R.sub.1 s independently of one another are hydrogen or methyl, x is an integer from 2 to 50 and y is an integer from 1 to 30, and(c) a polyamine having at least two primary amino groups,give, after hardening, flexible and tough-lasting products. They are suitable, if appropriate in combination with further additives, for example for the production of sealing compositions, injection compositions, adhesives, moulding resins, matrix resins, casting resins or coating compositions.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: September 1, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Frans Setiabudi, Jean-Pierre Wolf
  • Patent number: 5143126
    Abstract: A vibratory conveyor for forming flowable grain agglomerations from previously poorly flowable fine-grained powder and thereafter conveying said agglomerations to a metering chamber which comprises a mechanical vibration device to agglomerate the poorly flowable powder, transport means for conveying the agglomerated powder and metering means for collecting and measuring the conveyed powder; and a method directed thereto wherein the poorly flowable powder is subjected to a mechanical vibration step prior to transport and metering.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: September 1, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Beate Boesch, Satish C. Khanna
  • Patent number: 5140069
    Abstract: Curable compositions containingA) an epoxy resin having on average more than one epoxy group per molecule,B) a carboxylic anhydride curing agent for component A) andC) about 5 to 40% by weight, relative to the amount of the components A), B) and C), of a liquid mixture of C1) a polyalkylene glycol based on polypropylene glycol or polybutylene glycol having two to about six hydroxyl, carboxyl, carboxylic anhydride or glycidyl end groups and of C2) an elastomeric copolymer based on butadiene, a polar, ethylenically unsaturated comonomer and, if appropriate, further ethylenically unsaturated comonomers having carboxylic acid, hydroxyl, mercapto or glycidyl ether end groups are described. Components C1) and C2) can also occur together in a segmented copolymer.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: August 18, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Rolf Mulhaupt, Werner Rufenacht
  • Patent number: 5140081
    Abstract: Compounds which contain peroxide linkages as well as a hindered amine light stabilizer moiety of low basicity function as free radical polymerization initiators and provide a polymer containing a hindered amine stabilizer chemically bonded to said polymer. The low basicity of the instant compounds prevents interaction with acid catalysts used in some polymerization systems.
    Type: Grant
    Filed: July 17, 1991
    Date of Patent: August 18, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Raymond Seltzer, Roland A. E. Winter, Peter J. Schirmann
  • Patent number: 5138078
    Abstract: A compound of the formula (I) ##STR1## wherein R is hydrogen, methyl of C.sub.2 -C.sub.5 alkyl and R.sup.1 is O-phenylene, a saturated or unsaturated 1,2-cyclohexylene group; a 2,3-bicyclo[2.2.2]-hept-5-enyl group of the formula (II) ##STR2## or a saturated or unsaturated aliphatic group of about 2 to about 20 carbon atoms; said O-phenylene is optionally substituted in the ring by one or two alkyl groups of from 1 to 4 carbon atoms; said 1,2-cyclohexylene and bicyclo groups are optionally substituted by one or two alkyl groups of from 1 to 4 carbon atoms and/or by one to six chlorine or bromine atoms; and said aliphatic group is optionally substituted by one or more chlorine or bromine atoms. This compound can be used as a coating compound when mixed with curing agents.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: August 11, 1992
    Assignee: Ciba-Geigy Corporation
    Inventor: Vincent Brytus
  • 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: 5132374
    Abstract: Adducts of the formula I ##STR1## are described in which R.sup.1 is an e-valent aliphatic radical after the removal of the functional groups, X is --O--or --NH--, R.sup.2 is a d+l-valent carbocyclic-aromatic radical, R.sup.3 is hydrogen or methyl, R.sup.4 is an aliphatic, aromatic, or araliphatic c+l-valent radical, Y is --O--, --S--or --NR.sup.5 --, R.sup.5 is hydrogen or ##STR2## b is an integer from 2 to 15, b is an integer from 1 to 25, c is 1, 2 or 3, d is 1, 2 or 3 and e is 2, 3 or 4.The adducts can be combined with latent curing agents and, if appropriate, other epoxy resins to give adhesives having good stability on storage and high flexibility.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: July 21, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Franz-Josef Reischmann, Madan M. Bagga