Patents by Inventor Hans Mollet

Hans Mollet 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).

  • Patent number: 5196142
    Abstract: Storage-stable, non-sedimenting emulsions comprisinga) 10 to 80% by weight, based on the emulsion, of one or more anti-oxidants,b) 0.25 to 10% by weight, based on the emulsion, of a surfactant in the form of a fatty acid salt of formula R-COOY, wherein R is straight chain or branched C.sub.3 -C.sub.18 alkyl or straight chain or branched C.sub.3 -C.sub.18 -alkenyl, or is phenyl(C.sub.3 -C.sub.18)alkyl, and Y is an alkali metal, which salt is prepared in situ from the fatty acid,c) 0.25 to 10% by weight, based on the emulsion, of a co-surfactant in the form of an alcohol of the general formula R'--OH, wherein R' is straight chain or branched C.sub.4 -C.sub.19 alkyl or straight chain or branched C.sub.4 -C.sub.19 alkenyl, or is phenyl(C.sub.4 -C.sub.19)alkyl, andd) water to make up 100%.The emulsions are used for stabilizing emulsion-polymerized polymers and copolymers such as ABS.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: March 23, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans Mollet, Martin Holer
  • Patent number: 5116534
    Abstract: Storage-stable, non-sedimenting emulsions containinga) 10 to 40% by weight, based on the emulsion, of (A) phenolic antioxidants and antioxidants from the series comprising (B) thiodipropionic acid esters or/and (C) organic phosphites,b) 0.25 to 10% by weight, based on the emulsion, of a surfactant of the formula R-COOY, in which R is alkyl having 3 to 18 atoms, alkenyl having 3 to 18 C atoms or phenyl-C.sub.3 -C.sub.18 alkyl and Y is an alkali metal,0.25 to 10% by weight, based on the emulsion, of an alcohol of the formula R'-OH, in which R' is alkyl having 4 to 19 C atoms, alkenyl having 4 to 19 C atoms or phenyl-C.sub.4 C.sub.19 alkyl, andwater as the remainder to make 100% by weight.The emulsions are employed in particular for stabilizing emulsion-polymerized polymers and copolymers, for example ABS.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: May 26, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans Mollet, Martin Holer
  • Patent number: 5059347
    Abstract: Storage-stable, non-sedimenting emulsions comprisinga) 10 to 80% by weight, based on the emulsion, of one or more antioxidants,b) 0.25 to 10% by weight, based on the emulsion, of a surfactant in the form of a fatty acid salt of formula R-COOY, wherein R is straight chain or branched C.sub.3 -C.sub.18 alkyl or straight chain or branched C.sub.3 -C.sub.18 -alkenyl, or is phenyl(C.sub.3 -C.sub.18)alkyl, and Y is an alkali metal, which salt is prepared in situ from the fatty acid,c) 0.25 to 10% by weight, based on the emulsion, of a co-surfactant in the form of an alcohol of the general formula R'--OH, wherein R' is straight chain or branched C.sub.4 -C.sub.19 alkyl or straight chain or branched C.sub.4 -C.sub.19 alkenyl, or is phenyl(C.sub.4 -C.sub.19)alkyl, andd) water to make up 100%.The emulsion are used for stabilizing emulsion-polymerized polymers and copolymers such as ABS.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: October 22, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans Mollet, Martin Holer
  • Patent number: 4518392
    Abstract: The invention describes a process for the HT dyeing of polyester fibre material with dyes which are sparingly soluble in water, which process comprises the use of a dyebath which contains at least one block polymer of ethylene oxide and propylene oxide having a molecular weight higher than 5000.The use of such a polymeric non-ionic dispersant ensures, even in low concentration, the stability of the dye dispersion under HT conditions, with at the same time substantial to complete bath exhaustion.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: May 21, 1985
    Assignee: Ciba Geigy Corporation
    Inventors: Hans Mollet, Paul Dussy
  • Patent number: 4411668
    Abstract: The invention relates to dyestuff preparations comprising water, a water-insoluble or sparingly water-soluble dye, a dispersant, a humectant, and optionally further additives, wherein said humectant is a compound of the formula I ##STR1## wherein R is a C.sub.1 -C.sub.16 alkyl group which is unsubstituted or substituted by OH, CN, halogen or --N(C.sub.1 -C.sub.4 alkyl).sub.2, and R' is hydrogen or the --CH.sub.2 --CHOH--CH.sub.2 OH group.These preparations are suitable for use in aqueous or aqueous-organic dye liquors or printing inks or also for obtaining printing pastes. After partial or complete dehydration they are also very readily redispersible.
    Type: Grant
    Filed: January 20, 1982
    Date of Patent: October 25, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Suresh C. Agarwal, Horst Jager, Nitya G. Podder, Hans Mollet
  • Patent number: 4314815
    Abstract: New solid dyestuff preparations are disclosed consisting of an anionic dyestuff having a particle size of less than 10.mu., a dispersing agent, a basic component, especially sodium bicarbonate, a solid acid component, preferably tartaric acid, as well as, optionally, further additives.The new dyestuff preparations are stable in storage, and have good solubility in water, they are therefore extremely suitable for the preparation of aqueous dye liquors.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: February 9, 1982
    Assignee: Ciba-Geigy Corporation
    Inventor: Hans Mollet
  • Patent number: 4297100
    Abstract: Aqueous dye preparations having a migration-regulating action and containing at least one dye insoluble in water, a dispersing agent and at least one further additive, which preparations are characterized in that they contain at least one water-soluble polymerization product containing carboxyl groups.
    Type: Grant
    Filed: August 17, 1979
    Date of Patent: October 27, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Zdenek Koci, Hans Mollet
  • Patent number: 4295850
    Abstract: Stable dust-free commercial preparations of organic substances are described, which preparations comprise an organic substance especially a dyestuff or optical brightener in dry powder form enclosed in a covering, particularly in a sack or bag sealed on all sides, made from polyethylene oxide having a molecular weight of more than 200,000 and a thickness of 10 to 80.mu., which covering is soluble in the same medium as the content.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: October 20, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Roland Haberli, Hans Mollet, Gustaaf Scherer
  • Patent number: 4208370
    Abstract: Described is a process for agglomerating a substance from a liquid system with subsequent separation and drying, which liquid system is composed of at least two liquids, which at 20.degree. C. are completely miscible with one another.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: June 17, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Roland Haberli, Hans Mollet, Christel Tempel
  • Patent number: 4179267
    Abstract: Stable, highly concentrated dyestuff solutions which are miscible with water in any proportion are described and which contain at least one azo or nitro dyestuff containing sulphonic acid groups or at least one anthraquinone dyestuff dissolved in a solvent mixture consisting of an aprotic solvent or a mixture of aprotic solvents, a glycol ether and optionally water, e.g. N-methylpyrrolidone/diethylene glycol monomethyl ether which mixture exhibits a pronounced synergetic effect with regard both to the solubility of the dyestuffs and to the stability of the dyestuff solution.These dyestuff solutions are suitable for the production of dye solution for the dyeing or printing of in particular, natural or synthetic nitrogen containing organic fibers especially polyamide carpets.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: December 18, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Roger Lacroix, Hans Mollet
  • Patent number: 4134725
    Abstract: An improved process for the production of granules, comprising application of a granulating liquid to a pulverulent substance being subjected to a rotating movement in such an amount that the point of equilibrium between the moisture content of the substance and that of the air is exceeded, and subsequently drying this moist substance until its moisture content falls to or below this point of equilibrium.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: January 16, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Urs Buchel, Hans Mollet
  • Patent number: 4117066
    Abstract: A novel process for the complete isolation and rapid drying of a solid, or mixtures of solids, from a suspension, is described in that there is added to the aqueous or organic suspension containing said solid an additional liquid, or a mixture of such liquids, which is a solvent for the solid contained in the suspension, and which liquid is insoluble, or soluble to only a limited extent, in the suspension liquid, in such a way that a multiphase system is formed; and the mixture is maintained in a state of intense turbulence until agglomerates of the solid are formed; and this is then seperated from the multiphase system and optionally dried.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: September 26, 1978
    Assignee: Ciba-Geigy AG
    Inventors: Hans Mollet, Roland Haberli, Alberto Rabassa, Fridolin Babler
  • Patent number: 4110073
    Abstract: The present invention concerns new fluid and stable dispersions of anionic dyestuffs, containing(a) dispersed anionic dyestuff with a maximum particle size of 5.mu.,(b) a dispersing agent which comprises(i) a combination of at least two different anion-active dispersing agents or(ii) a combination of an anion-active dispersing agent and at least one wetting agent or(iii) a combination of at least two different anion-active dispersing agents and at least one wetting agent,(c) optionally further auxiliaries and(d) water,As well as a process for their production and their application to dyeing and printing of organic material, in particular fibre material of natural and synthetic polyamide.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: August 29, 1978
    Assignee: Ciba-Geigy AG
    Inventors: Hans Mollet, Wolfgang Rehmann
  • Patent number: 4105401
    Abstract: Disclosed is a solid preparation containing at least one anionic dye or optical brightener, at least one anionic compound having hydrotropic activity, and/or at least one anion-active solubilising agent as well as optionally further additives, such as and preferably a anti-dust agent, whereby this preparation has a very good solubility especially in cold water compared with that of equally strong dyes diluted with customary fillers and can be used for producing aqueous dye preparations useful for dyeing and printing materials dyeable with anionic dyes or optical brighteners.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: August 8, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Zdenek Koci, Hans Mollet
  • Patent number: 4055439
    Abstract: A process for the manufacture of an easily isolatable, dustless, readily dispersible pigment granulate which comprises subjecting a suspension of a finely dispersed organic pigment or pigment preparation, in the presence of water-insoluble granulating assistants belonging to the class of natural, synthetic or semi-synthetic resins, esters of dicarboxylic acids, of arylcarboxylic acids, of arylsulphonic acids, of phosphoric and phosphorous acid, phenylsulphonamides or the alkaline salts of fatty acids containing 12 to 14 carbon atoms, but in the absence of wetting agents, in a two-phase system consisting of an aqueous phase and a second liquid phase which consists substantially of an organic solvent that is virtually insoluble in water and in which the granulating assistant is at least partially soluble, to a turbulent mixing until a granulate has formed, then isolating said granulate, which consists substantially of pigment or pigment preparation, granulating assistant and organic solvent, and removing the so
    Type: Grant
    Filed: August 28, 1975
    Date of Patent: October 25, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Fridolin Babler, Hans Mollet, Gunther Zwahlen
  • Patent number: 3967921
    Abstract: Solid non-dusty, porous dyestuff-foams are described of any desired shape and size containing at least one dyestuff, a foaming agent and optionally bonding agents and/or further additives.These foams are useful for preparing dye liquors or printing pastes by sprinkling said foams into water or organic solvents.
    Type: Grant
    Filed: July 9, 1973
    Date of Patent: July 6, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Roland Haberli, Hans Mollet