Abstract: The present invention relates to polycondensates of the general formula I ##STR1## in which ##STR2## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.
Type:
Grant
Filed:
February 6, 1995
Date of Patent:
January 30, 1996
Assignee:
Cassella AG
Inventors:
Fritz Engelhardt, Jurgen Kuhlwein, Wilfried Schuler, Ralf Zerrer, Werner Antwerpen
Abstract: The azo dyes of the formula I ##STR1## where X.sup.1 is for example hydrogen or (C.sub.1 to C.sub.6)alkyl,X.sup.2 is cyano or nitro,X.sup.3 is for example hydrogen or (C.sub.1 to C.sub.4)alkoxy,X.sup.4 is for example (C.sub.1 to C.sub.4)alkoxy, chlorine or hydrogen,R.sup.1 is hydrogen or (C.sub.1 to C.sub.6)alkyl,R.sup.2 is hydrogen or (C.sub.1 to C.sub.6)alkyl andR.sup.3 is for example (C.sub.1 to C.sub.8)alkyl,are highly suitable for dyeing and printing hydrophobic fiber materials.
Abstract: The invention relates to a preparation process for aromatic methyl methoxycarboxylates by reaction of aromatic hydroxycarboxylic acids in the form of a mixture with the methoxycarboxylic acids with dimethyl sulphate in water.
Abstract: Phenylimidazolidine derivatives of the general formula I ##STR1## in which, for example, Y denotes --CH.sub.2 --CH.sub.2 --CO--r denotes 0 to 3Z denotes oxygenW denotes hydroxylR.sup.1 denotes --NH--C(.dbd.NH)--NH.sub.2R, R.sup.2, R.sup.3 denote hydrogenR.sup.4 denotes --CO--NHR.sup.5,where --NH--R.sup.5 represents an .alpha.-amino acid radical, have useful pharmacological properties such as inhibition of platelet aggregation and osteoclast binding to the bone surfaces.
Type:
Grant
Filed:
July 22, 1993
Date of Patent:
June 13, 1995
Assignee:
Cassella AG
Inventors:
Gerhard Zoller, Bernd Jablonka, Melitta Just, Otmar Klingler, Gerhard Breipohl, Jochen Knolle, Wolfgang Konig
Abstract: The present invention relates to a process for the preparation of compounds of the general formula I ##STR1## by reaction of compounds of the general formula II ##STR2## with amines of the general formula III ##STR3## wherein R.sup.1 and R.sup.2 independently of one another denote hydrogen, (C.sub.1 -C.sub.4)-alkyl, C.sub.1 -C.sub.4)-hydroxyalkyl or (C.sub.5 -C.sub.6)-cycloalkyl, or, together with the nitrogen atom carrying them, form (C.sub.4 -C.sub.6)-heterocyclyl and R.sup.3 and R.sup.4 independently of one another denote hydrogen, (C.sub.1 -C.sub.4)-alkyl, (C.sub.1 -C.sub.4)-hydroxyalkyl, (C.sub.1 -C.sub.2)-alkylcarbonyl or tosyl.
Type:
Grant
Filed:
December 3, 1992
Date of Patent:
May 9, 1995
Assignee:
Cassella AG
Inventors:
Willi Steckelberg, Rolf Muller, Peter Koch
Abstract: The present invention relates to a process for the preparation of methyl 5-bromo-6-methoxy-1-naphthoate by brominating methyl 6-methoxy-1-naphthoate with bromine, in which between 0.5 and 0.6 mol of bromine (Br.sub.2) are employed per mole of methyl 6-methoxy-1-naphthoate and the bromination is carried out in the presence of an oxidant.
Abstract: The present invention relates to 3-(cis-2,6-dimethylpiperidino)sydnone imine salts of the general formula I ##STR1## in which X denotes H.sub.2 PO.sub.4 or ##STR2## processes for their preparation and their use.
Type:
Grant
Filed:
May 10, 1993
Date of Patent:
March 21, 1995
Assignee:
Cassella AG
Inventors:
Karl Schonafinger, Eckard Kujath, Dieter Voegele
Abstract: The present invention relates to 2,4-dioxoimidazolidine compounds of the formula I ##STR1## a process for their preparation and their use as inhibitors of platelet aggregation, metastasis of carcinoma cells and osteoclast binding to the bone surfaces.
Type:
Grant
Filed:
April 12, 1993
Date of Patent:
March 14, 1995
Assignee:
Cassella AG
Inventors:
Gerhard Zoller, Wolfgang Konig, Jochen Knolle, Melitta Just, Bernd Jablonka
Abstract: The present invention relates to phenylfuroxans of the general formula I ##STR1## in which one of the radicals R.sup.1 and R.sup.2 represents phenyl and the other represents ##STR2## where R.sup.3, R.sup.4 and n are defined as indicated in claim 1, processes for their preparation and their use.
Abstract: The invention relates to compounds of the formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and Y have the meanings indicated in Claim 1, to processes for their preparation and their use as active pharmacological substances.
Type:
Grant
Filed:
August 4, 1992
Date of Patent:
February 14, 1995
Assignee:
Cassella AG
Inventors:
Wolfgang Konig, Gerhard Zoller, Melitta Just, Bernd Jablonka
Abstract: The black water-soluble sulphur dyes of the formula ##STR1## in which, for example, F is the dye chromophore of C.I. Leuco Sulphur Black 1,R.sup.1 if hydrogen, alkyl,M.sym. is an alkali metal cation andn is such a large number that the dye contains 5 to 20% by weight of COO.sup..crclbar. groups are, inter alia, outstandingly suitable for producing recording fluids.
Type:
Grant
Filed:
September 30, 1993
Date of Patent:
January 24, 1995
Assignee:
Cassella AG
Inventors:
Wolfgang Bauer, Gert Nagl, Willi Steckelberg, Josef Ritter, Wilhelm Mauelshagen
Abstract: The present invention relates to pyrimidofuroxans of the general formula I ##STR1## in which A denotes ##STR2## where in each case the nitrogen atom is bonded via the C-4 and the carbon atom via the C-3 of the furoxan ring and the R radicals are defined as indicated in Claim 1, processes for their preparation and their use for the control and prevention of disorders of the cardiovascular system, in particular for the control and prevention of angina pectoris, and for the treatment of erectile dysfunctions.
Type:
Grant
Filed:
May 25, 1993
Date of Patent:
January 17, 1995
Assignee:
Cassella AG
Inventors:
Joachim Brendel, Karl Schonafinger, Helmut Bohn
Abstract: The water-insoluble dyes of the formula I ##STR1## in which, for example, F is the dye chromophore of C.I. Leuco Sulphur Black 1,R is hydrogen, alkyl,M.sup..sym. is a quaternary ammonium cation or phosphonium cation in which the sum of carbon atoms in the hydrophobic radicals present is at least 6, andn is such a large number that the dye I contains 5 to 20% by weight of --COO.sup..crclbar. groups,are suitable in particular for producing recording fluids.
Type:
Grant
Filed:
October 6, 1993
Date of Patent:
December 20, 1994
Assignee:
Cassella AG
Inventors:
Wolfgang Bauer, Willi Steckelberg, Josef Ritter, Wilhelm Mauelshagen
Abstract: The water-insoluble sulphur dyes of the general formula I ##STR1## in which F is a dye chromophore of, for example, C.I. Sulphur Black 1 and R.sup.1 to R.sup.4 and n are as defined in Claim 1, are suitable in particular for producing recording fluids.
Type:
Grant
Filed:
November 1, 1993
Date of Patent:
November 29, 1994
Assignee:
Cassella AG
Inventors:
Wolfgang Bauer, Willi Steckelberg, Josef Ritter, Wilhelm Mauelshagen
Abstract: 4-(2-Aminophenylthio)naphthalic anhydride derivatives are obtained in good yields and purities by reaction of 2-aminothiophenolates with 4-chloro- or 4-bromonaphthalic anhydrides having a particle size of at most 50 .mu.m.
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
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.
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
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.
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.