Patents Assigned to Ciba-Geigy
  • Imidylcompounds, polymers therefrom, and use of the polymers
    Patent number: 4629773
    Abstract: There are obtained from N-(hydroxypolyoxaalkylene)imidyl compounds and (meth)acrylic acid esters thereof homopolymers or copolymers with olefinically unsaturated comonomers. These polymers are photosensitive and are suitable as photographic recording material, as adhesives and as agents for surface coating.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: December 16, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Beat Muller
  • Polyimides, a process for their preparation and their use
    Patent number: 4629777
    Abstract: Homopolyimides and copolyimides of aromatic tetracarboxylic acids and aromatic diamines which are substituted in the two ortho-positions relative to at least one N atom by alkyl, alkoxy, alkoxyalkyl, cycloalkyl or aralkyl, are soluble in organic solvents and have increased glass transition temperatures and hence very good heat stabilities. Such polyimides, which contain radicals of a benzophenonetetracarboxylic acid, are radiation-sensitive and autophotocrosslinkable. The polyimides are suitable for the production of films, protective coatings and photographic relief images.
    Type: Grant
    Filed: May 10, 1984
    Date of Patent: December 16, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Josef Pfeifer
  • Sulfonyl carbonoimidates
    Patent number: 4629802
    Abstract: A novel process for producing sulfonylureas of the formula I having a herbicidal action and an action regulating plant growth ##STR1## wherein A is an unsubstituted or substituted phenyl, naphthyl, furan, thiophene or pyridine group, E is a nitrogen atom or the methine group, R.sub.a is hydrogen, halogen, C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -haloalkyl, C.sub.1 -C.sub.5 -alkoxy, C.sub.1 -C.sub.5 -haloalkoxy, C.sub.1 -C.sub.5 -alkylthio or C.sub.2 -C.sub.10 -alkoxyalkoxy, and R.sub.b is the same as R.sub.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: December 16, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Haukur Kristinsson, Werner Topfl
  • Hydroxyphenyloxime ethers
    Patent number: 4629813
    Abstract: The present invention relates to a novel four-step process for the preparation of herbicidal and plant growth regulating 2-nitro-5-(2-pyridinyloxy)acetophenone oxime ether derivatives of formula I ##STR1## wherein R.sup.1 is hydrogen, cyano, halogen, nitro, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 haloalkyl,R.sup.2 is hydrogen or halogen,R.sup.3 is C.sub.1 -C.sub.4 alkyl andR.sup.4 is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 cyanoalkyl, C.sub.3 -C.sub.5 alkenyl, C.sub.3 -C.sub.5 -haloalkenyl, C.sub.3 -C.sub.5 alkynyl, or C.sub.1 -C.sub.4 alkyl which is substituted by C.sub.1 -C.sub.4 alkoxy, halogen, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkylaminocarbonyl or di(C.sub.1 -C.sub.4)alkylaminocarbonyl,which process comprises converting a phenol of formula II ##STR2## by reaction with a compound of formulaH.sub.2 N--O--R.sup.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: December 16, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Hermann Rempfler, Georg Pissiotas
  • Process for irradiating polyimides
    Patent number: 4629685
    Abstract: Homopolyimides and copolyimides which contain structural elements of the formula I ##STR1## in which R.sup.1 and R.sup.2 are halogen, nitro, aryl, aryloxy, alkyl or alkoxy, m is 0 or a number from 1 to 4, n is 0 or a number from 1 to 3 and p is 0, 1 or 2, the free carbonyl groups are bonded in the ortho-position relative to one another and R is a divalent aromatic radical which is substituted by at least one alkyl group or aralkyl group, are autophotocross-linkable. They are suitable for the production of protective films and photographic relief images.
    Type: Grant
    Filed: November 6, 1985
    Date of Patent: December 16, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Josef Pfeifer
  • Novel phenoxyphenoxyalkanoylthioamides as herbicides
    Patent number: 4629498
    Abstract: Phenoxyphenoxyalkanoylthioamides of the formula I ##STR1## wherein X.sub.1 is chlorine or trifluoromethyl, X.sub.2 is chlorine or nitro, R.sub.1 is C.sub.1 -C.sub.4 alkyl, and R.sub.2 is the amino group or an amidino group ##STR2## wherein each of R.sub.3 and R.sub.4 independently is hydrogen or C.sub.1 --C.sub.4 alkyl or taken together they form a C.sub.4 --C.sub.5 alkylene chain, have herbicidal and growth regulating properties. They are suitable for selectively controlling weeds in crops of useful plants, especially in cereals and rice.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: December 16, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Otto Rohr, Georg Pissiotas
  • Recording material for color photography
    Patent number: 4629682
    Abstract: Recording material for color photography which contains in at least one photosensitive silver halide emulsion layer, one intermediate layer and/or one protective layer, at least one polyalkylpiperidine compound of the formula I ##STR1## in which n is the number 0 or 1 and X is a group of the formula ##STR2## or of the formula ##STR3## Color-forming agents which are obtained by imagewise exposure and development of this recording material for color photography are particularly stable towards the effect of visible and ultraviolet light.Reference is made to the description in respect of the meanings of the substituents and symbols in the formulae.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: December 16, 1986
    Assignee: Ciba-Geigy AG
    Inventors: David G. Leppard, Jean Rody
  • Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids
    Patent number: 4627889
    Abstract: Sizing agents which are novel compounds and have at least one anionic or acidic group which is optionally in salt form and at least two hydrophobic substituents of which at least two of the most adjacent ones are bonded to each other with a bridging member which has at least 1 carbon atom and 2 hetero atoms, at least one sulfur atom being present as hetero atom, in particular sulfimides or bisulfimides of fatty acid derivatives, are highly suitable for use, together with commercially available retention aids, in a process for sizing paper or cardboard.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: December 9, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Michael Bernheim, Hubert Meindl, Peter Rohringer, Hans Wegmuller, Dieter Werthemann
  • Novel imidazolides and their use as curing agents for polyepoxide compounds
    Patent number: 4628105
    Abstract: There are described novel imidazolides (N-acylimidazoles) of the formula I ##STR1## wherein R.sub.1 is methyl, ethyl or isopropyl,R.sub.2, R.sub.3 and R.sub.4 independently of one another are each hydrogen, methyl, ethyl or isopropyl, with the proviso that R.sub.2 is hydrogen only when R.sub.1 is isopropyl,R.sub.5, R.sub.6 and R.sub.7 independently of one another are each hydrogen, methyl, ethyl or isopropyl, or phenyl which is unsubstituted or substituted by methyl or ethyl groups, with the proviso that at least one of the symbols R.sub.5, R.sub.6 and R.sub.7 is phenyl which is unsubstituted or substituted according to definition.The imidazolides (I) are suitable as curing agents for polyepoxide compounds.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: December 9, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Rolf Schmid, Helmut Zondler, Michael Fischer, Werner Stauffer
  • Certain 5-(pyridyl-2'-oxy)-2-nitrobenzoic acid ester derivatives herbicidal compositions containing same and their herbicidal use
    Patent number: 4626275
    Abstract: The invention relates to 5-(pyridyl-2'-oxy)-2-nitrobenzoic acid derivatives of the formula ##STR1## wherein A is the cyano group, the carboxyl group or a salt, an ester, a thioester or an amide thereof, X is halogen or a halomethyl group, Y is hydrogen, halogen or a halomethyl group. These compounds have herbicidal properties and are suitable for selectively controlling weeds in crops of useful plants, especially in soybeans, cereals and rice crops.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: December 2, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Hermann Rempfler
  • Process for the production of colored photographic polymer images
    Patent number: 4626497
    Abstract: A light-sensitive recording material which provides polymer images and contains, on a base, a layer of a photocrosslinkable polymer with an average molecular weight of 10.sup.3 to 10.sup.6, the copolymer having been prepared from(1) a (meth)acrylate, (meth)acrylamide or vinyl ether derivative which contains at least one maleimide group of the formula ##STR1## in which R.sub.1 and R.sub.2 are each alkyl having 1 to 4 carbon atoms, or R.sub.1 and R.sub.2 together with the carbon atoms to which they are bonded form a 5-membered or 6-membered carbocyclic ring,(2) an ethylenically unsaturated comonomer containing acid groups, this comonomer being present in an amount of at least 18 percent by weight, based on the total amount of the comonomers, and, optionally,(3) at least one further ethylenically unsaturated comonomer which differs from the comonomers (1) and (2).
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: December 2, 1986
    Assignee: Ciba-Geigy AG
    Inventors: Martin Roth, Beat Muller, Joseph Berger, Peter Loew
  • Certain pyridylacetylene compounds, compositions containing same and herbicidal methods of use
    Patent number: 4626272
    Abstract: Compounds of the formula ##STR1## wherein Z is phenyl optionally mono- or di-substituted by halogen, nitro, cyano, trifluoromethyl, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkyl; naphthyl; or furyl;R is cyano, C.sub.1 -C.sub.4 alkoxy, di(C.sub.1 -C.sub.6 -alkyl)-amino, halogen or C.sub.1 -C.sub.4 alkyl;n is 0, 1 or 2;Y is oxygen or sulfur;Q is straight-chain or branched-chain C.sub.2 -C.sub.6 -alkylene;each of R.sub.1 and R.sub.2 is C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 -alkenyl, C.sub.3 -C.sub.6 -alkynyl or C.sub.3 -C.sub.8 -cycloalkyl; orR.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached form a C.sub.5 or C.sub.6 heterocyclic group with a maximum of two hetero atoms, which group is optionally substituted by C.sub.1 -C.sub.3 alkyl are useful selective herbicides for post-emergence application in crops of cereals, rice and maize.
    Type: Grant
    Filed: December 14, 1984
    Date of Patent: December 2, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans-Georg Brunner, Rolf Schurter, Henry Szczepanski
  • Guanidines, pharmaceutical compositions and use
    Patent number: 4626537
    Abstract: The invention relates to novel guanidine derivatives, particularly to substituted guanidines of the formula ##STR1## having hypoglycaemic activity, for the oral treatment of hyperglycaemia in mammals, especially for the oral treatment of Diabetes mellitus.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: December 2, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Krishna G. Dave, Thomas George
  • Substituted pyridazinones, pharmaceutical preparations containing these compounds, and the use thereof
    Patent number: 4624951
    Abstract: The present invention relates to novel substituted pyridazinones of the general formula I ##STR1## wherein R is a halogen atom, a lower alkyl or lower alkoxy group, the nitro, hydroxyl, cyano, carboxyl, lower alkoxycarbonyl or carbamoyl group or the trifluoromethyl group, and Z is hydrogen or an acyl group, and the salts and tautomeric forms thereof, which have a marked antithrombotic action, to the production of these novel compounds, to pharmaceutical preparations containing them, and to their use.
    Type: Grant
    Filed: January 10, 1986
    Date of Patent: November 25, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Richard Goschke
  • Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release, their manufacture and use
    Patent number: 4624848
    Abstract: An active agent containing controlled release diffusion device comprising a swellable hydrogel matrix in the non-swollen state, interpenetrated with an active agent solute having a stable concentration distribution increasing in a gradient normal to the surface of the device and between the surface and the core thereof, said gradient being in the form of a substantially continuous, inflection point containing, sigmoidal curve, such that the device, when placed in an aqueous hydrogel swelling environment, releases said active agent in a controlled continuous manner by diffusion for a predetermined period of time, a method of preparing such a device, and the use thereof to release an active agent into the intended environment of use.
    Type: Grant
    Filed: May 10, 1984
    Date of Patent: November 25, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Ping I. Lee
  • Process for the preparation of granular dye formulations
    Patent number: 4624678
    Abstract: The invention describes a process for the preparation of granular dye formulations by mixing a (preferably water-soluble) dye, water, and optionally further assistants with a polyethylene glycol that melts in the range from 40.degree. to 150.degree. C., and drying the resultant solution or suspension in a spray drier or fluidized bed drier. The granular formulations so obtained are permanently dust-free, dissolve rapidly in an aqueous dyebath, and do not cause foaming during dyeing.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: November 25, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Dieter Schneider
  • Thermally transferable layers of radiation sensitive epoxy resins used to prepare protective coatings and relief images
    Patent number: 4624912
    Abstract: A process for the production of a protective layer or a relief image on a substrate, wherein a radiation-sensitive layer, consisting of a solid film-forming epoxy resin containing a photoinitiator, which can be activated by radiation, for the polyaddition reaction, is transferred from a support to a substrate, then exposed directly or under a photomask and hardened by the action of heat, after which, if appropriate, the unexposed parts are developed with a solvent. The process is suitable, for example, for the production of printed circuits, solder resist masks and offset printing plates.
    Type: Grant
    Filed: February 6, 1985
    Date of Patent: November 25, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans Zweifel, Sigrid Bauer, Kurt Meier
  • Bisquinazolines useful in color former systems
    Patent number: 4625027
    Abstract: Chromogenic bisquinazolines of the formula ##STR1## wherein Q is the direct bond or an aliphatic or cycloaliphatic hydrocarbon radical, or is --CO--, --S-- or --SO.sub.2 --, andY is the radical of a couplable compound, in particular an N-substituted 4-aminophenyl radical or a hydrogenated quinoline radical, and the rings A, B and D are unsubstituted or substituted by cyano, nitro, halogen, lower alkyl, phenyl, benzyl, lower alkoxy or lower alkoxycarbonyl.These compounds are particularly suitable color formers for pressure-sensitive or heat-sensitive recording materials and produce intense yellow or orange color of excellent fastness to light and, in particular, sublimation.
    Type: Grant
    Filed: October 14, 1983
    Date of Patent: November 25, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Rudolf Zink, Ian J. Fletcher
  • Metal complexes of azo dyes containing a 2-(P-N-aceloacetylaminophenyl) benzothiozole moiety
    Patent number: 4625017
    Abstract: Metallizable azo dyes of the formula I ##STR1## wherein A is the radical of a diazo component of the benzene or naphthalene series, which diazo component contains in the o-position with respect to the azo group a metallizable hydroxyl group,R is methyl or chloromethyl, or phenyl which can be substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen,R.sub.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sub.2 is hydrogen or methyl,n is 0 or 1, andm is 0, 1, 2 or 3.In the form of their heavy-metal complexes, the dyes are suitable in particular for dyeing leather. These dyes are deeply colored, cover well, have good substantivity and build-up while simultaneously having good fastness properties.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: November 25, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Alois Puntener
  • Process for producing light-reflecting bodies
    Patent number: 4623562
    Abstract: A process for producing light-reflecting bodies is described. The wall of the light-reflecting body consists of a polyalkylene terephthalate and/or a copolyester thereof, containing in each case 10-40% by weight of a finely-divided filler, a light-reflecting metal layer being applied directly to at least one surface of the wall. According to the novel process, a polyester moulding compound containing:(a) 90-60% by weight of a polyalkylene terephthalate and/or copolyester thereof, or of a mixture of polyalkylene terephthalates, and(b) 10-40% by weight of a finely-divided filleris subjected before shaping, at elevated temperature but at a temperature below the melting point of the moulding compound, to a vacuum treatment.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: November 18, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Franz Breitenfellner, Karl Leidig, Thomas Kainmuller