Patents Assigned to Cassella Farbwerke Mainkur Aktiengesellschaft
  • Patent number: 4216314
    Abstract: Physiologically-acceptable substituted 1,2-ethylenediamines and 1,3-propylenediamines, in free-base and in acid-addition-salt form, have highly pronounced and cardioselective .beta.-adrenolytic action, antiarrhythmic action and hypotensive action on administration to humans. The diamines are, more specifically, N-[3-aryloxy-2-hydroxypropyl]-N'-[1,3-(di-R.sup.3)-2,4-dioxypyrimid-6-yl] (ethylene or propylene)diamines wherein R.sup.3 is --H or lower alkyl and the aryl nucleus is either further unsubstituted, further monosubstituted or further disubstituted.The compounds are prepared, e.g, by reacting a corresponding N-[3-phenoxy-2-hydroxypropyl] (ethylene or propylene)diamine with a corresponding 6-chloropyrimidine-2,4-dione in a suitable medium containing an acid-binding agent.
    Type: Grant
    Filed: May 2, 1978
    Date of Patent: August 5, 1980
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Thomas Raabe, Otto Grawinger, Josef Scholtholt, Eckhard Schraven
  • Patent number: 4116918
    Abstract: Melamine-formaldehyde resins of high transparency, good light fastness and low solubility are prepared from heavily N-oxymethylated melamines highly etherified with C.sub.1 to C.sub.2 alkyl, by vented kneading in liquid form at 120.degree.-160.degree. C followed by curing, all without local overheating and without the application of kneading pressure to solidified resin. A self-cleaning kneader is used and the resin that is produced is highly suited for carrying fluorescent dyes and the like.
    Type: Grant
    Filed: June 3, 1975
    Date of Patent: September 26, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Hans Gattner, Joachim Ribka
  • Patent number: 4088764
    Abstract: The present invention relates to new pharmacologically valuable derivatives of 1-phenoxy-3-amino-propan-2-ol having the formula ##STR1## Wherein A denotes -CH.sub.2 -alkoxy, -O-alkoxyalkyl, -O-hydroxyalkyl, or ##STR2## R.sub.1 denotes hydrogen or methyl, Het denotes the radical of a pyrrole, pyrazole, imidazole, furane, thiophene, thiazole, pyridine, pyridazine, pyrimidine or pyrazine, which can additionally be substituted by one or more methyl groups, said radical is linked through a C atom, and R.sub.2 and R.sub.3 denote hydrogen, alkyl, alkenyl or cycloalkyl or conjointly with the N atom to which they are linked, and optionally with a further oxygen or sulfur hetero-atom, denote a saturated, 5-membered or 6-membered, monocyclic, heterocyclic structure, and alkyl radicals contain 1 to 4 carbon atoms, alkoxy radicals contain 1 to 4 carbon atoms, alkenyl radicals contain 3 or 4 carbon atoms and cycloalkyl radicals contain 5 to 7 carbon atoms; and aldehyde condensation products and acid addition salts thereof.
    Type: Grant
    Filed: December 10, 1974
    Date of Patent: May 9, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Thomas Raabe, Otto Grawinger, Josef Scholtholt, Rolf-Eberhard Nitz, Eckhard Schraven
  • Patent number: 4087420
    Abstract: A water-insoluble azo dyestuff of the formula ##STR1## wherein D is an optionally substituted aromatic or heteroaromatic radical free of ionic groups; X is hydrogen or optionally substituted alkoxy; Y is hydrogen, optionally substituted alkyl, alkenyl, cycloalkyl, phenyl, hetaryl, alkoxy or phenoxy or --NHR.sup.4 wherein R.sup.4 is alkyl, alkenyl, cycloalkyl, aralkyl or aryl; R.sup.1 and R.sup.2 are hydrogen or alkyl and R.sup.3 is optionally substituted alkyl and its utility in the dyeing and printing of hydrophobic synthetic fibers and films such as polyesters.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: May 2, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Ernst Heinrich, Jachim Ribka, Joachim Valentin
  • Patent number: 4081426
    Abstract: Aminoplast preparation is greatly speeded by condensing an aminotriazine such as melamine with formaldehyde and etherifying alkanol under superatmospheric pressure and at a temperature between about 80.degree. and about 130.degree. C.
    Type: Grant
    Filed: April 15, 1976
    Date of Patent: March 28, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Walter Michel, Hans Honel, Manfred Schon
  • Patent number: 4080160
    Abstract: The formation of undesired difficulty removable film on dyeing equipment when dyeing with aqueous pigment dispersions containing cross-linking resin, is reduced by incorporating in the dispersions a mono-sulphated oleic acid amide.
    Type: Grant
    Filed: June 10, 1976
    Date of Patent: March 21, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Georg Cermak, Gerhard Pfeiffer
  • Patent number: 4079040
    Abstract: Spreadability and/or strength of water-setting inorganic bonding compositions are improved by incorporating in them a water-soluble condensation product of formaldehyde with a diphenol ##STR1## The condensation can also take place in the presence of a water-soluble sulfite, a water-soluble sulfamate, a water-soluble pyrosulfite, a phenol sulfonic acid or a naphthalene sulfonic acid.
    Type: Grant
    Filed: April 30, 1975
    Date of Patent: March 14, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Joachim Ribka, Otto Trosken, Karlfried Keller, Erwin Herrmann, Wolfgang Bodenstedt, Peter Dorries
  • Patent number: 4076662
    Abstract: N-formyl- or N-acetyl-aminomethyl ethers make very effective plasticizers for aminoplast resins and are particularly desirable for plasticizing such resins in resin-impregnated cellulosic products.
    Type: Grant
    Filed: December 15, 1976
    Date of Patent: February 28, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Karl Schnee, Steffen Piesch, Dieter Tichy
  • Patent number: 4075409
    Abstract: The present invention relates to pharmacologically valuable new benzophenone derivatives having a pronounced sedative action on the central nervous system and some of which also possess muscle-relaxing and aggression-inhibiting properties. These new derivatives have the structural formula ##STR1## and the pharmaceutically-acceptable acid-addition salts thereof in which R.sub.1 and R.sub.2 are substituents selected from the group consisting of hydrogen, saturated and unsaturated alkyl groups having 1-4 carbon atoms; R.sub.3 is selected from the group consisting of --COOC.sub.3 H.sub.7, --COOC.sub.4 H.sub.9, --COOC.sub.6 H.sub.5, --C.sub.6 H.sub.5, ##STR2## whereby R.sub.4 is an aliphatic radical with 1 to 4 carbon atoms or phenyl and Y is an oxygen or sulfur atom; if m is O R.sub.3 is further selected from the group consisting of --COOCH.sub.3 and --COOC.sub.2 H.sub.
    Type: Grant
    Filed: October 21, 1974
    Date of Patent: February 21, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Heinz Gunter Greve, Klaus Resag
  • Patent number: 4073616
    Abstract: Dyeing with sulfur or vat dyes is improved by using as oxidant for the oxidative after-treatment to bring out final dye shade and fastness, ##STR1## or a protonated product thereof R being hydrogen or --SO.sub.3 M, andM being hydrogen, ammonium or a compatible metal.
    Type: Grant
    Filed: December 2, 1976
    Date of Patent: February 14, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Christian Heid, Johannes Polster
  • Patent number: 4069013
    Abstract: Pulverulent dyestuffs of all kinds are made highly resistant to dusting by dispersing into the powder a small amount of mineral oil that boils within the range of 140.degree. to 310.degree. C, and an emulsifier having a polyethoxy hydrophile. These additives can be premixed.
    Type: Grant
    Filed: May 21, 1976
    Date of Patent: January 17, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Helmut Hett, Kurt Walser
  • Patent number: 4069012
    Abstract: Polyester fabrics are particularly effectively dyed with water-insoluble dyes having the formula: ##STR1##
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: January 17, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Ernst Heinrich, Joachim Ribka
  • Patent number: 4066768
    Abstract: The present invention relates to new pharmacologically valuable derivatives of 1-phenoxy-3-amino-propan-2-ol having the formula ##STR1## wherein X denotes ##STR2## A denotes --CH.sub.2 --alkoxy, --O--alkoxyalkyl, --O--hydroxyalkyl or ##STR3## AN AROMATIC OR QUASI-AROMATIC, 5-MEMBERED OR 6-MEMBERED, MONOCYCLIC RING WHICH IS LINKED THROUGH A C atom which has one or 2 nitrogen, oxygen and/or sulphur hetero-atoms and which can be substituted additionally by one or more methyl groups, and R.sub.2 and R.sub.
    Type: Grant
    Filed: March 24, 1976
    Date of Patent: January 3, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Thomas Raabe, Otto Grawinger, Josef Scholtholt, Rolf-Eberhard Nitz, Eckhard Schraven
  • Patent number: 4058518
    Abstract: Dyestuffs, free of ionic groups, of the formula: ##STR1## wherein R is alkyl having 1 to 6 carbon atoms and the utility thereof in the dyeing and printing of synthetic materials deep yellow with excellent fastness properties.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: November 15, 1977
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Ernst Heinrich, Joachim Ribka
  • Patent number: 4043984
    Abstract: Melamine resins are effectively elasticized with an elasticizer having the formula R-C.sub.6 H.sub.4 --COO--X--OH wherein C.sub.6 H.sub.4 denotes a phenylene group, R denotes a hydrogen atom or a methyl or ethyl group, and X denotes an unbranched or branched alkylene group with 2 to 6 carbon atoms whose carbon chain is either uninterrupted or interrupted by one oxygen atom. Such elasticized resins are particularly suitable for bonding together laminates.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: August 23, 1977
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Karl-Heinz Keil, Karlfried Keller, Joachim Ribka, Dieter Tichy
  • Patent number: 4039493
    Abstract: Low-viscosity high-solids-content melamine-formaldehyde condensates having high reactivity, low content of free formaldehyde and good compatibility, are prepared by effecting condensation in an alcohol having up to 3 carbons, then concentrating the condensate and heating the concentrate in a higher alcohol having from 3 to 18 carbons and again concentrating. The final product cures on heating to a hard glossy film and can be added to other uncured resins to improve the hardness of their films.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: August 2, 1977
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Manfred Schon, Helmut Durr, Dieter Plath, Karlfried Keller, Walter Michel
  • Patent number: 4035143
    Abstract: A water-insoluble azo dyestuff of the formula ##STR1## wherein D is an optionally substituted aromatic or heteroaromatic radical free of ionic groups; X is hydrogen or optionally substituted alkoxy; Y is hydrogen, optionally substituted alkyl, alkenyl, cycloalkyl, phenyl, hetaryl, alkoxy or phenoxy or --NHR.sup.4 wherein R.sup.4 is alkyl, alkenyl, cycloalkyl, aralkyl or aryl; R.sup.1 and R.sup.2 are hydrogen or alkyl and R.sup.3 is optionally substituted alkyl and its utility in the dyeing and printing of hydrophobic synthetic fibers and films such as polyesters.
    Type: Grant
    Filed: November 11, 1975
    Date of Patent: July 12, 1977
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Ernst Heinrich, Joachim Ribka, Joachim Valentin
  • Patent number: 4033945
    Abstract: Very effective direct dyeing of cotton and other hydroxyl- or nitrogen-containing fibers is effected with water-soluble triasazo dyes having the formula:A-N=N-A.sup.1 -N=N-A.sup.2 -N=N-A.sup.3where A is a radical of a diazoconstituent and A.sup.3 is a radical of a coupling constituent ##STR1## and A.sup.1 or A.sup.2 or both can have their azo linkages reversed. These dyes are very fast particularly to washing and to perspiration, and are so effective with cotton that dye baths for such use are rapidly exhausted and the disposal of used bath is less of a problem.
    Type: Grant
    Filed: May 20, 1975
    Date of Patent: July 5, 1977
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Wolfgang Bauer, Erwin Krusche, Joachim Ribka
  • Patent number: 4031064
    Abstract: Maleamic and fumaramic acids and certain of their derivatives make very good curing agents for converting aminoplast condensates to cured resins.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: June 21, 1977
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Karl Schnee, Dieter Tichy, Steffen Piesch
  • Patent number: 4020071
    Abstract: The present invention relates to new pharmacologically valuable derivatives of 1-phenoxy-3-amino-propan-2-ol having the formula ##STR1## and the aldehyde condensation products and acid addition salts thereof wherein X is selected from the group consisting of ##STR2## wherein the phenyl ring I may have attached to it up to three similar or different substituents selected from the group consisting of alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkenyl, alkoxy, alkenyloxy, alkinyloxy, benzyloxy, phenyl, halogen and --NR.sub.1 R.sub.2, wherein R.sub.1 is selected from alkyl and acyl, and R.sub.2 is selected from hydrogen and alkyl; and to the production thereof by a method selected from (A) reacting 1-phenoxy-3-amino-propan-2-ol having the formula ##STR3## with a compound having the formula Y-X, wherein X has the above-defined meaning and Y is selected from halogen, --OH, --OK or --ONa; (B) reacting a compound of the formula ##STR4## with a compound of the formula H.sub.
    Type: Grant
    Filed: December 10, 1974
    Date of Patent: April 26, 1977
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Thomas Raabe, Otto Grawinger, Josef Scholtholt, Rolf-Eberhard Nitz, Eckhard Schraven