Patents Represented by Law Firm Plumley & Tyner
  • Process for the production of dyed acrylic fibres
    Patent number: 4087494
    Abstract: This invention relates to a process for the production of dyed filaments or fibres of acrylonitrile polymers, wherein carbon black pigments are added to the polymer before the spinning process and the filament containing carbon black pigments are dyed. By this process it is possible to save considerable amounts of dye-stuff.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: May 2, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Reinehr, Hans-Dieter Braun, Robert Dippelhofer
  • Printing inks for transfer printing
    Patent number: 4087241
    Abstract: Printing inks for the production of auxiliary carriers for transfer printing on acid-modified textile fiber materials, characterized in that they contain at least(a) as a dyestuff intermediate, a carbinol base of cationic dyestuffs, which can be sublimed at 160.degree.-240.degree. C, of the formula ##STR1## (b) a practically anhydrous neutral organic solvent and (C) A NEUTRAL RESIN WHICH IS SOLUBLE IN THIS SOLVENT.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: May 2, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hubertus Psaar
  • Method for preparing and treating vegetable segments
    Patent number: 4086368
    Abstract: A process and apparatus for making holes in vegetable segments wherein the hole-making step is integrally connected with the steps of cutting and slicing of the segments prior to blanching, dehydrating and/or rehydrating whereby the time of processing of vegetable segments can be quite substantially reduced.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: April 25, 1978
    Assignee: J. R. Simplot
    Inventors: Roy E. Bosley, Paul T. Mann, Gary D. Decoteau, Kert F. Ivi, Elden D. Winslow
  • Solid .epsilon.-caprolactam dyestuff preparations
    Patent number: 4083689
    Abstract: Dyestuff preparations consisting of one or more water-soluble dyestuffs, one or more water-soluble carboxylic acid amides with melting points between 40.degree. and 200.degree. C optionally further customary auxiliaries are easily wettable with water and easily and rapidly soluble even in cold water.
    Type: Grant
    Filed: September 26, 1975
    Date of Patent: April 11, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karlheinz Wolf, Konrad Nonn, Reinhold Hornle, Hans Werner Petroll
  • Polyazo dyestuffs having a dianisidine component, a diaminophenyl sulfonic acid component, and a naphthol component
    Patent number: 4083845
    Abstract: The invention relates to polyazo dyestuffs of the formula ##STR1## in which R denotes hydrogen, methyl or chlorine,X denotes methyl or ethyl andK represents a radical of the formula ##STR2## WHEREIN M DENOTES 1, 2 OR 3, OR REPRESENTS A RADICAL OF THE FORMULA ##STR3## wherein Y denotes hydrogen, chlorine, nitro, --SO.sub.3 H, alkyl, alkoxy, etc.The new dyestuffs are particularly suitable for dyeing and printing cellulose fibre materials, especially paper and cotton.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: April 11, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Erich Kramer, Horst Nickel, Karl-Heinz Schundehutte
  • Process for the preparation of azo dyestuffs
    Patent number: 4083846
    Abstract: The invention relates to the preparation of azo dyestuffs which are free from sulphonic acid groups by diazotization, coupling and subsequent nucleophilic exchange of a halogen atom of the diazo component is in the o-position relative to the azo group. The process is characterized in that all the reaction steps are carried out in a neutral organic dipolar solvent, with the proviso that when using diazo components which are not diazotizable, or only incompletely diazotizable, in dilute aqueous mineral acids, the diazotization medium employed consists of aprotic solvents which do not undergo any chemical reaction with the diazonium salt of this component. The new process is distinguished by less contamination of the effluent.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: April 11, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventor: Klaus Leverenz
  • Process for dyeing synthetic fibre materials from an organic water-immiscible solvent
    Patent number: 4083685
    Abstract: Exhaustion process for dyeing synthetic fiber materials with dispersions of azo dyestuffs which contain carbamate groups, in organic water-immiscible solvents. The dyestuffs are distinguished by good drawing properties and good general fastness properties.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: April 11, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventor: Winfried Kruckenberg
  • Printing inks for transfer printing
    Patent number: 4083680
    Abstract: Printing inks for the preparation of temporary supports for transfer printing on acid-modified textile fibre materials, containing(a) as a dyestuff intermediate a dyestuff base which can be sublimed at 160.degree.-240.degree. C, of the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl,R.sub.3 is hydrogen, alkyl, cycloalkyl or aralkyl,R.sub.4 is hydrogen or a non-ionic substituent,R.sub.5 is hydrogen, an alkyl, alkoxycarbonyl or nitrile group,R.sub.6 and R.sub.7 are hydrogen or non-ionic substituents,B represents --CH--, --N.dbd. or ##STR2## (B) A ORGANIC SOLVENT AND (C) A NEUTRAL RESIN.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: April 11, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hubertus Psaar
  • Phenylazo orthocyano phenylazo or orthocyano phenylazo phenylazo containing dyestuffs
    Patent number: 4083844
    Abstract: Disazo dyestuffs of the formulaA'--N.dbd.N--B'--N.dbd.N--Kare disclosed in whichA' is an aromatic carbocyclic or aromatic heterocyclic radical;B' is aromatic carbocyclic and at least one of A' and B' carries a cyano group ortho to the azo group; andK is the radical of a coupling component, e.g. parahydroxyaryl or N-substituted paraaminoaryl radicals.These dyestuffs are useful for dyeing synthetic hydrophobic materials such as polyesters, cellulose triacetate, polyamides, polyolefins, polyurethanes and polymers and copolymers of acrylonitrile to give greenish-blue to bluish-red shades with good fastness properties.
    Type: Grant
    Filed: March 21, 1974
    Date of Patent: April 11, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Alois Gottschlich, Klaus Leverenz
  • Dyeing preparations, which are soluble in cold water, of anionic dyestuffs
    Patent number: 4082505
    Abstract: Solid dyestuff preparations at most 10 microns, which contain an anionic dyestuff as the guanidinium salt, of a particle size, a surface-active agent and optionally further customary additives are soluble in cold water.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: April 4, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Konrad Nonn, Karlheinz Wolf, Reinold Hornle
  • Sulphonamidosalicylaldehydes
    Patent number: 4080379
    Abstract: 4-Sulphonamidosalicylaldehydes of the formula ##STR1## wherein R represents an optionally substituted straight-chain or branched alkyl or cycloalkyl group or an optionally substituted aryl group, are valuable intermediates for the preparation of optical brighteners.
    Type: Grant
    Filed: June 23, 1976
    Date of Patent: March 21, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Florin Seng, Carl Wolfgang Schellhammer
  • Transfer printing process
    Patent number: 4080331
    Abstract: The use of dyestuffs of the formula ##STR1## wherein R represents an alkyl, aralkyl, cycloalkyl or aryl radical, an alkylene radical bonded to the naphthalene ring, or hydrogen, andX represents an electron-attracting group for dyeing textiles by transfer printing.
    Type: Grant
    Filed: September 25, 1974
    Date of Patent: March 21, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventor: Alfred Brack
  • Process for dyeing dry-spun aromatic polyamides
    Patent number: 4078889
    Abstract: The invention relates to a process for the production of dyed filaments from aromatic polyamides which are modified with acid groups.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: March 14, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Dieter Wolf, Ralf Miessen, Hans Egon Kunzel, Francis Bentz
  • Process for the preparation of concentrated solutions of urea compounds
    Patent number: 4077767
    Abstract: The invention relates to the preparation of storage-stable, concentrated solutions of urea compounds of the formulaF.sub.1 --HN--CO--NH--F.sub.2wherein F.sub.1 and F.sub.2 denote radicals of dyestuffs or dyestuff intermediates containing acid groups by reacting 2 equivalents of amines of the formulaF.sub.1,2 --NH.sub.2with one equivalent of a compound of the formulaCl--CO--Xwherein X is chlorine or an aryloxy radical in the presence of alkaline earth metal ions in the pH range of 4.0 to 8.0, separating off the sparingly soluble alkaline earth metal salt of the resulting urea compounds, adding -- for example -- a salt of lithium of which the anion forms a salt, which is sparingly soluble in the reaction medium, with the alkaline earth metal cation of the urea compound to the suspension of these urea compounds and separating off the alkaline earth metal salt which has precipitated.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: March 7, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolf-Eckhard Bleck, Horst Nickel, Erich Kramer
  • Process for the halogenation of copper phthalocyanine
    Patent number: 4077974
    Abstract: An improved process for the perhalogenation of copper phthalocyanine is characterized in that the halogenation is carried out in an aluminum chloride/sulphuryl chloride mixture which contains 8 to 25% by weight of an anhydrous alkali metal halide, relative to the amount of aluminium chloride.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: March 7, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventor: Diether Wessling
  • Process for the preparation and conditioning of copper phthalocyanine
    Patent number: 4077972
    Abstract: A process and apparatus for conditioning crude copper phthalocyanine pigment prepared in a solvent-free process which comprises kneading at a shear gradient of 300-20,000 sec..sup.-1 for 10 seconds to 15 minutes and with an energy comsumption of 0.4-50 KWH/Kg. of copper phthalocyanine, a mixture of1. 1.0 part crude copper phthalocyanine which has not previously been subjected to extractive boiling;2. 0.1-20 parts of a salt which is soluble in water or in aqueous acids or bases; and3. 0.3-5 parts of an organic or inorganic solvent or mixture thereof which does not have significant amounts of the pigment or the salt.
    Type: Grant
    Filed: April 2, 1976
    Date of Patent: March 7, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinz-Ewald Baurecht, Reinhold Hornle, Rudolf Erdmenger, Gerd Muller, Karlheinz Wolf
  • Water-soluble anthraquinone dyestuff
    Patent number: 4077987
    Abstract: The dyestuff of the formula ##STR1## is suitable for the dyeing of nitrogen-containing textile materials with good fastness properties.
    Type: Grant
    Filed: February 24, 1976
    Date of Patent: March 7, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Harms, Dieter Hullstrung
  • Styryl dyestuffs
    Patent number: 4077962
    Abstract: The invention relates to water-insoluble styryl dyestuffs of the formula ##STR1## in which A is arylB is an alkylene bridge,D denotes the remaining members of a heterocycleY denotes a non-ionic substituent,n is 0, 1, 2 or 3 andZ denotes a cyano group or a carboxylic acid ester group.The dyestuffs are outstanding suitable for the dyeing of synthetic fibre materials which are dyed in greenish-yellow shades with good fastness properties, especially good resistance to hydrolysis.
    Type: Grant
    Filed: September 24, 1975
    Date of Patent: March 7, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hermann Beecken
  • Method of inhibiting skin irritation
    Patent number: 4076799
    Abstract: A method of inhibiting or reducing the irritation of skin resulting from allergic contact dermatitis, caused by contact with natural or synthetic allergenic agents, e.g. poison ivy, and dinitrochlorobenzene, respectively, is described. The method comprises applying to the skin an irritating reducing effective amount of a protective agent which is an organic compound having at least two polar groups, e.g. carboxyl groups, separated by a chain of at least 15 atoms the majority of which are carbon atoms and optionally containing a cyclic moiety of at least 5 atoms, prior to contact of the skin with the allergenic agent. The protective agent may be combined in a pharmacologically acceptable base for application to the skin.
    Type: Grant
    Filed: December 27, 1972
    Date of Patent: February 28, 1978
    Assignee: Cincinnati Milacron, Inc.
    Inventors: Sharon Gail Willer, Paul Ronald Yust, Ralph Kelly
  • Anthraquinone dyestuffs
    Patent number: RE29577
    Abstract: Anthraquinone dyestuffs of the formula ##STR1## in which X.sub.1 denotes hydroxyl or amino, X.sub.2 denotes hydroxyl, amino, alkylamino, cycloalkylamino, arylamino, acylamino, alkylmercapto or arylmercapto, R denotes hydrogen, alkyl, aralkyl, cycloalkyl or aryl, Z denotes alkylene, Ac denotes acyl and Y denotes hydrogen or halogen, and in which the ring A can optionally by substituted by halogen, as well as their preparation and use for the dyeing of synthetic fibre materials. The dyed materials show good fastness to light and sublimation.
    Type: Grant
    Filed: January 4, 1977
    Date of Patent: March 14, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Volker Hederich, Friedrich Wilhelm Krock, Gunter Gehrke, Rutger Neeff