Patents Assigned to Cassella
  • Triazine/formaldehyde resin
    Patent number: 5328978
    Abstract: The present invention relates to a triazine/formaldehyde resin which contains a compound of the general formula I ##STR1## wherein R.sup.1 and R.sup.2 are defined as stated in claim 1, a process for its preparation and its use as a curing agent in surface coating systems.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: July 12, 1994
    Assignee: Cassella AG
    Inventors: Manfred Schon, Jurgen Ott, Uwe Kubillus, Elif Tas
  • Process for the preparation of pyrrole derivates
    Patent number: 5290947
    Abstract: The present invention relates to a process for the preparation of pyrrole derivatives of the general formula I ##STR1## by reaction of a compound of the general formula III ##STR2## where R, R.sup.1 and R.sup.2 are defined as specified in claim 1, in a Vilsmeier reaction. The reaction is carried out in an easily degradable solvent, the reaction product is isolated with the aid of a water-miscible extractant and is purified by high-vacuum distillation in the short path evaporator.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: March 1, 1994
    Assignee: Cassella Aktiengesellschaft
    Inventors: Gerhard Zoller, Eckard Kujath, Klaus Delpy, Manfred Schrod
  • Process for the preparation of finished dyeings which are fast to thermomigration: orange-dyed polyester fabrics
    Patent number: 5288680
    Abstract: The present invention relates to a process for the preparation of finished dyeings of high fastness to thermomigration on fibre materials consisting completely or partly of polyester, characterized in that the material is dyed with one or more dyestuffs of the general formula I ##STR1## wherein R denotes linear (C.sub.1 -C.sub.3)-alkyl or (C.sub.3 -C.sub.6)-alkyl which is interrupted by an oxygen atom andR.sup.1 denotes (C.sub.1 -C.sub.4)-alkyl,and the dyeing thus obtained is then finished.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: February 22, 1994
    Assignee: Cassella Aktiengesellschaft
    Inventors: Rudolf Binder, Ulrich Buhler, Friedrich Schophoff, Margareta Boos, Reinhard Kuhn
  • High temperature dyeing of polyester and polyester-containing textile materials under alkaline conditions
    Patent number: 5279621
    Abstract: The present invention relates to a process for the HT dyeing of polyester or polyester-containing textile materials at pH 8 to pH 11, characterized in that one or more monoazo dyes are used of the general formula I ##STR1## wherein X, Y, R.sup.1 and R.sup.2 are each as defined in Claim 1.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: January 18, 1994
    Assignee: Cassella AG
    Inventor: Ulrich Buhler
  • Process for the preparation of benzothioxanthene dyestuffs
    Patent number: 5280128
    Abstract: The present invention relates to a process for the preparation of benzothioxanthene dyestuffs and cyclisation of 3-(2'-aminophenylthio)-benzanathrones wherein the diazotisation and cyclisation are carried out simultaneously in polar, aprotic solvent in the presence of water.
    Type: Grant
    Filed: December 12, 1991
    Date of Patent: January 18, 1994
    Assignee: Cassella Aktiengesellschaft
    Inventors: Wolfgang Bauer, Eberhard Grimm, Uwe Nickel, Manfred Schrod, Herbert Wille
  • Binder for liquids
    Patent number: 5278206
    Abstract: Scatterable binder in pulverized form, for binding spilled liquids, comprisinga) superabsorbers,b) Kieselguhr, peat, sawdust, wood meal, wood wool, straw, paper fibers, pulp or plastics in fibrous or milled form andc) polyglycol,the content of polyglycol being up to 30% by weight and wherein said scatterable binder is in pulverized form and is a means for binding spilled liquids.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: January 11, 1994
    Assignee: Cassella Aktiengesellschaft
    Inventors: Gerd Gobel, Ferdinand Angerer, Ulrich Riegel
  • Process for the storage and transportation of liquid hydrocarbons
    Patent number: 5276248
    Abstract: The present invention relates to the use of hydrocarbon-rich gels as a safe storage or transportation form for liquid hydrocarbons and to a process for the safe storage and safe transportion of liquid hydrocarbons, characterised in thata) the hydrocarbon is converted into a hydrocarbon-rich gel by addition of a surfactant and water andb) after storage or transportation has taken place, the hydrocarbon-rich gel is broken down again.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: January 4, 1994
    Assignee: Cassella Aktiengesellschaft
    Inventors: Fritz Engelhardt, Gerlinde Ebert, Heinz Hoffmann, Gerhard Platz, Werner Ritschel, deceased
  • Process for obtaining the hydrocarbon from a hydrocarbon-rich gel
    Patent number: 5276247
    Abstract: The present invention relates to a process for obtaining the hydrocarbon from a hydrocarbon-rich gel based on an ionic surfactant by treatment of the gel with a laminar mineral.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: January 4, 1994
    Assignee: Cassella Aktiengesellschaft
    Inventors: Fritz Engelhardt, Gerlinde Ebert, Werner Zschau
  • Use of glycidyl phosphonates as crosslinkers in the preparation of hydrogels
    Patent number: 5274048
    Abstract: The present invention relates to the use of compounds of the general formula I ##STR1## in which R denotes alkyl, alkenyl or aryl, which can be optionally substituted, as crosslinkers in the preparation of hydrogels, and to the hydrogels thus prepared and their use.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: December 28, 1993
    Assignee: Cassella AG
    Inventors: Fritz Engelhardt, Ulrich Riegel, Hanss-Jerg Kleiner, Wolf-Dieter Muller
  • Aryl sulphide, aryl sulphoxide and aryl sulphone compounds
    Patent number: 5274184
    Abstract: The present invention relates to compounds of the general formula I ##STR1## wherein A.sup..sym. and B.sup..sym. independently of one another denote a proton, with the limitation that they do not both simultaneously denote protons, the equivalent part of the barium ion, an ion of the general formula II ##STR2## or an ion of the general formula III ##STR3## and wherein R.sup.1 to R.sup.8, R.sup.11 to R.sup.16, X and m and n are as defined in the description, processes for their preparation and their use as charge control agents in toners and developers and as charge improving agents in powders and varnishes.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: December 28, 1993
    Assignee: Cassella Aktiengesellschaft
    Inventors: Gert Nagl, Hans-Tobias Macholdt
  • High temperature dyeing of polyester and polyester-containing textile materials in alkaline medium
    Patent number: 5244471
    Abstract: The present invention relates to a process for the HT dyeing of polyester or polyester-containing textile materials at pH 8 to pH 11, characterized in that one or more monoazo dyes are used of the general formula I ##STR1## where X.sup.1 to X.sup.4, Y.sup.1 to R.sup.4 and R are each as defined in claim 1.
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: September 14, 1993
    Assignee: Cassella AG
    Inventor: Ulrich Buhler
  • Benzophenone ether esters, processes for their preparation, and their use for improving the light stability of polyester dyeings
    Patent number: 5244476
    Abstract: The present invention relates to compounds of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, x and y are defined as in the description, processes for their preparation, their use for improving the light stability of polyester dyeings and a dyeing process and dye preparations.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: September 14, 1993
    Assignee: Cassella AG
    Inventors: Joachim Schulz, Gunter Bartels
  • Hydrophilic, swellable polymers
    Patent number: 5236965
    Abstract: The present invention relates to hydrophilic, swellable polymers which consist of radicals of the general formula I ##STR1## wherein R.sup.1 to R.sup.3 are defined as stated in the description, and of radicals of a crosslinking agent which have originated from monomers having at least two olefinically unsaturated double bonds, and which are characterized in that they are in the form of a highly porous, foam-like polyhedral structure, their preparation and their use as absorption agents for water and aqueous solutions.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: August 17, 1993
    Assignee: Cassella Aktiengesellschaft
    Inventors: Friedrich Engelhardt, Gerlinde Ebert
  • Dyeing of cellulose with soluble sulphur dyes without reducing agent
    Patent number: 5230711
    Abstract: Water-soluble sulphur dyes can be applied to cellulose without reducing agents, without added salt and without oxidising agents if the cellulose has been grafted with a polymer obtained by polymerisation of at least one N-containing basic monomer.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: July 27, 1993
    Assignee: Cassella AG
    Inventors: Karl-Heinz Keil, Thomas Martini
  • Substituted 3-aminosydnonimines
    Patent number: 5221680
    Abstract: Substituted 3-aminosydnonimines of the formula I ##STR1## and pharmacologically acceptable acid addition salts thereof, in which R.sup.1 denotes hydrogen or the radical --COR.sup.4,R.sup.2 denotes alkyl or phenyl alkyl having 1 to 4 C atoms in the alkyl group,R.sup.4 denotes, for example, an aryl radical, and processes and formulations for controlling or preventing cardiovascular diseases by administering an effective amount of such compounds to a host in need thereof.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: June 22, 1993
    Assignee: Cassella Aktiengesellschaft
    Inventors: Karl Schonafinger, Rudi Beyerle, Helmut Bohn
  • Monoazo dye and preparation and use thereof
    Patent number: 5216140
    Abstract: The monoazo dye of the formula ##STR1## is highly suitable for dyeing and printing hydrophobic fibres.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: June 1, 1993
    Assignee: Cassella Aktiengesellschaft
    Inventor: Ulrich Buhler
  • Hydrophilic, swellable polymers
    Patent number: 5214075
    Abstract: The present invention relates to hydrophilic, swellable polymers which consist of radicals of the general formula I ##STR1## wherein R.sup.1 to R.sup.3 are defined as stated in the description, and of radicals of a crosslinking agent which have originated from monomers having at least two olefinically unsaturated double bonds, and which are characterized in that they are in the form of a highly porous, foam-like polyhedral structure, their preparation and their use as absorption agents for water and aqueous solutions.
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: May 25, 1993
    Assignee: Cassella Aktiengesellschaft
    Inventors: Friedrich Engelhardt, Gerlinde Ebert
  • Substituted 3-aminosydnone imines and salts thereof
    Patent number: 5204475
    Abstract: The invention relates to pharmacologically active substituted 3-aminosydnone imines of the general formula I ##STR1## in which n denotes 0 or 1, and their pharmacologically acceptable salts and acid addition salts, and to a process for the preparation of the compounds according to the invention and their use.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: April 20, 1993
    Assignee: Cassella Aktiengesellschaft
    Inventors: Karl Schonafinger, Rudi Beyerle, Helmut Bohn, Melitta Just
  • 2-(aminoalkyl)pyrrolealdehydes, process for their preparation and their use
    Patent number: 5192795
    Abstract: 2-(Aminoalkyl)pyrrolealdehydes of the general formula I ##STR1## in which R: denotes hydrogen, alkyl;R.sup.1 : denotes, for example, hydrogen, alkyl, phenyl;R.sup.2 and R.sup.3 : denote, for example, hydrogen, alkyl or alkanoyl, have useful pharmacological properties.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: March 9, 1993
    Assignee: Cassella Aktiengesellschaft
    Inventors: Gerhard Zoller, Ursula Schindler
  • Hydrophilic, swellable polymers
    Patent number: 5182312
    Abstract: The present invention relates to hydrophilic, swellable polymers which consists of radicals of the general formula I ##STR1## wherein R.sup.1 to R.sup.3 are defined as stated in the description, and of radicals of a crosslinking agent which have originated from monomers having at least two olefinically unsaturated double bonds, and which are characterized in that they are in the form of a highly porous, foam-like polyhedral structure, their preparation and their use as absorption agents for water and aqueous solutions.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: January 26, 1993
    Assignee: Cassella Aktiengesellschaft
    Inventors: Friedrich Engelhardt, Gerlinde Ebert