Patents by Inventor Johannes P. Dix

Johannes P. Dix 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: 5534166
    Abstract: Condensates of arenesulfonic acids and formaldehyde are prepared by sulfonating arenes obtainable by thermal cracking of a naphthenic residue oil and fractional distillation of the cracked products of the fraction obtained at 100-120.degree. C. under atmospheric pressure, sulfonating this aromatics fraction with oleum at 120.degree.-160.degree. C. using an amount of from 0.7 to 1.2 parts by weight of oleum having an SO.sub.3 content of 24% by weight per part by weight of aromatics fraction, and subsequently condensing the arenesulfonic acids with formaldehyde in a conventional manner, and are used as dispersants, in particular for preparing dye formulations.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: July 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Ralf Brueckmann, Johannes P. Dix, Rolf Fikentscher, Manfred Herrmann, Norbert Zimmermann
  • Patent number: 5491043
    Abstract: An electrostatic toner contains a polymeric binder and as a charge stabilizer a polyamine whose average molecular weight is from 150 to 15,000 and wherein the nitrogen atoms are separated from each other by C.sub.1 -C.sub.13 - alkylene, which may be phenyl-substituted, or by phenylene, which may be C.sub.1 -C.sub.4 -alkyl-substituted, and are substituted by C.sub.1 -C.sub.13 -alkyl, which may be phenyl-, hydroxyl- or carboxyl-substituted, phenyl, C.sub.1 -C.sub.10 -alkanoyl, benzoyl, C.sub.1 - C.sub.6 - alkylcarbamoyl, phenylcarbamoyl or a radical of the formula CO-L-CO, where L is C.sub.2 -C.sub.8 -alkylene, the last case resulting in the crosslinking of two polyamine units.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: February 13, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes P. Dix, Ulf Baus, Karin H. Beck, Friedrich-Wilhelm Raulfs
  • Patent number: 5411556
    Abstract: There is described a process for dyeing leather with the dye of the formula ##STR1##
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: May 2, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes P. Dix, Gunther Lamm, Helmut Reichelt, Georg Zeidler
  • Patent number: 5393463
    Abstract: The present invention relates to the use of trialkanolamine polyethers obtained by condensation of one or more trialkanolamines in the presence of phosphorous acid and/or hypophosphorous acid as demulsifiers for oil-in-water emulsions.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: February 28, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fikentscher, Knut Oppenlaender, Johannes P. Dix, Wilfried Sager, Hans-Henning Vogel, Klaus Barthold, Guenther Elfers
  • Patent number: 5389110
    Abstract: Azo dyes useful for dyeing natural or synthetic substrates have the formula ##STR1## where n is from 1 to 4,q is 1 or 2,L.sup.1 is hydrogen or C.sub.1 -C.sub.3 -alkyl,L.sup.2 is acetyl, carbamoyl or hydroxysulfonyl, andD is the radical of a diazo component.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: February 14, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes P. Dix, Bernd Hupfeld, Gunther Lamm, Helmut Reichelt
  • Patent number: 5360454
    Abstract: Abstract of the Disclosure: A process for tanning leather comprises using for this purpose compounds of the general formula I ##STR1## where m is 0 or 1, and the radicalsR are independently of each other C.sub.1 -C.sub.18 -alkyl, which may be substituted by hydroxyl or carboxyl and/or interrupted by oxygen atoms, or else one of the radicals R is a radical of the formula ##STR2## where R.sup.1 is alkylene, which may be substituted by hydroxyl and/or interrupted by oxygen atoms.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: November 1, 1994
    Assignee: Basf Aktiengesellschaft
    Inventors: Norbert Grief, Knut Oppenlaender, Hermann Birkhofer, Brigitte Wegner, Johannes P. Dix
  • Patent number: 5298635
    Abstract: Tertiary amides useful as low-foam wetting agents in the textile industry have the formula I ##STR1## where R.sup.1 is straight-chain or branched C.sub.5 -C.sub.17 -alkyl or -alkenyl,R.sup.2 is straight-chain or branched C.sub.3 -C.sub.6 -alkyl,R.sup.3, R.sup.4 and R.sup.5 are each independently of the others hydrogen, methyl or ethyl, andn is from 3 to 15.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: March 29, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Eberhard Beckmann, Ralf Brueckmann, Johannes P. Dix, Peter Freyberg, Erich Kromm
  • Patent number: 5264560
    Abstract: Quaternized azo dyes whose diazo components are derived from a five-membered nitrogen-containing aromatic aminoheterocycle and whose coupling components are derived from the aniline series are prepared by reacting to corresponding neutral dye-bases with an alkylating agent in .gamma.-butyrolactone as inert diluent.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: November 23, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Hansen, Johannes P. Dix, Helmut Reichelt, Clemens Grund
  • Patent number: 5234626
    Abstract: The present invention relates to methods of demulsifying employing condensates as demulsifiers for oil-in-water emulsions and prepared fromA) a precondensate from one or more trialkanolamines of the general formula I ##STR1## in which R.sup.1 to R.sup.3 denote the same or different 1,2-alkylene groups of from 2 to 4 carbon atoms, andB) from 0.1 to 30% w/w, based on said precondensate, of one or more of the following compounds II:a) urea or a urea derivative of the general formula IIa ##STR2## b) a urea derivative of the general formula IIb ##STR3## c) a urethane of the general formula IIc ##STR4## and/or d) a urethane of the general formula IId ##STR5## in which R.sup.1 is hydrogen, C.sub.1 -C.sub.20 -alkyl or C.sub.2 -C.sub.20 -alkenyl,R.sup.2 and R.sup.3 are the same or different and denote hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.4 is C.sub.1 -C.sub.4 -alkyl andR.sup.5 is C.sub.1 -C.sub.12 -alkylene.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: August 10, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fikentscher, Knut Oppenlaender, Johannes P. Dix, Wilfried Sager, Hans-Henning Vogel, Guenther Elfers
  • Patent number: 5224963
    Abstract: Dyed leather is aftertreated with quaternized condensation products ofA) a precondensate of one or more trialkanolamines of the Formula I ##STR1## B) a) a carboxylic acid derivative thereof IIa ##STR2## b) a carboxamide IIb ##STR3## c) an epichlorohydrin IIc ##STR4## d) a monofunctional compound IId R.sup.9 --Y IIde) a bifunctional compound IIeZ'--R.sup.10 --Z.sup.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: July 6, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes P. Dix, Rolf Fikentscher, Ortwin Schaffer, Rolf Streicher
  • Patent number: 5186846
    Abstract: Dispersants of increased bioeliminability or biodegradability for use in dye and pigment preparations, as tanning aids, in plastics production and in crop protection formulations contain from 3 to 50% by weight of one or more aromatic or long-chain aliphatic carboxylic acids, salts thereof or anhydrides thereof or a mixture thereof.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: February 16, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Ralf Brueckmann, Willi Bury, Johannes P. Dix, Manfred Herrmann, Waldemar Dlugosch, Erich Kromm, Herbert Letter, Norbert Zimmermann, Wolf-Dieter Kermer, Klaus Taeger
  • Patent number: 5124438
    Abstract: Chemically modified proteins obtainable by reacting casein, collagen, gelatin, albumin or mixtures thereof(a) with 0.5 to 15% by weight of chlorine or of a compound which liberates chlorine under the reaction conditions, in an aqueous medium at a pH of from 0 to 7 or(b) with 0.5 to 50% by weight of a non-aromatic mono- or disulfonic acid which contains in its organic radical one or more groups or structural features which react with nucleophiles, in an aqueous medium at a pH of from 6 to 14,are used as dispersants in colorant formulations.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: June 23, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Ralf Brueckmann, Johannes P. Dix, Manfred Herrmann, Herbert Leiter, Norbert Zimmermann
  • Patent number: 5073634
    Abstract: Basic dyes of the formulaChr.sup..sym.[FeCl.sub.4 ].sup..crclbar.where Chr.sup.a is a dye cation are useful for dyeing acrylonitrile polymers or acid-modified polyesters.
    Type: Grant
    Filed: May 1, 1990
    Date of Patent: December 17, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes P. Dix, Guenter Hansen, Hellmut Kast
  • Patent number: 5015754
    Abstract: Quaternized condensation products useful as aftertreating agents for fixing reactive dyeings and prints on textile materials which contain cellulose fibers are formed fromA) a precondensate of one or more trialkanolamines I ##STR1## (R.sup.1 -R.sup.3 =C.sub.2 -C.sub.4 -1,2-alkylene), B) a) a carboxylic acid or a derivative thereof IIa ##STR2## [n=0, 1; R.sup.4, R.sup.5 =OH (except if n=0), C.sub.1 -C.sub.8 -alkoxy (possibly joined together to form a 5- or 6-membered ring if n=0), Cl, Br; R.sup.6 =C.sub.1 -C.sub.50 -alkylene (possibly interrupted by one or more nonadjacent oxygen atoms)],b) a carboxamide IIb ##STR3## [m, n, r=0, 1; R.sup.7 =H, C.sub.1 -C.sub.4 -alkyl; R.sup.8 =H, C.sub.1 -C.sub.25 -alkyl, C.sub.2 -C.sub.25 -alkenyl, Ph (possibly substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, F, Cl, Br)],c) an epihalohydrin IIc, ##STR4## d) a monofunctional compound IIdR.sup.9 --Y IId[R.sup.9 =C.sub.1 -C.sub.25 -alkyl, C.sub.2 -C.sub.25 -alkenyl, Ph (possibly substituted by C.sub.1 -C.sub.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: May 14, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes P. Dix, Rolf Fikentscher, Ingrid Steenken-Richter
  • Patent number: 4997680
    Abstract: Polymeric, unquaternized or quaternized condensates which contain piperazine rings bonded via chain members are used as conditioners for the pretreatment of nonmetallic surfaces of moldings before their activation for subsequent chemical metallization. This procedure gives particularly uniform and well adhering metal coatings.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: March 5, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Chung-Ji Tschang, Johannes P. Dix, Ekhard Winkler, Guenther Gotsmann, Klaus Glaser, Rolf Fikentscher
  • Patent number: 4976744
    Abstract: Concentrated solutions of cationic dyes are prepared by treating the cationic dyes, which contain as the counterions the anions customarily present during their preparation, with alkali metal salts of monocarboxylic acids and with or without complexing agents in an aqueous glycol ether medium, and separating off the organic phase, which contains the dyes in the form of their monocarboxylic acid salts.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: December 11, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes P. Dix, Guenter Hansen, Hellmut Kast
  • Patent number: 4940492
    Abstract: Colorant mixtures for use in printing inks contain isoquinoline-azo pigments of the formula I ##STR1## where X is chlorine, bromine, C.sub.1 -C.sub.4 -alkoxy or nitro,n is 1, 2 or 3, and the ring A can be substituted, and an isoquinoline-azo dye of the formula II ##STR2## where Y is C.sub.6 -C.sub.20 -alkoxy which may be interrupted by one or more oxygen atoms, and the ring B can be substituted.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: July 10, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinrich Kowarsch, Johannes P. Dix
  • Patent number: 4940609
    Abstract: Certain quaternary salts of di- and/or tri-(alkanol)-amines, which salts are soluble in the aqueous bath employed, are used as conditioners for pretreating nonmetallic surfaces of moldings prior to their activation for subsequent chemical metallization.Outstandingly uniform and strongly adhering metal coatings are obtained in this manner.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: July 10, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Chung-Ji Tschang, Johannes P. Dix, Ekhard Winkler, Guenther Gotsmann, Klaus Glaser, Rolf Fikentscher
  • Patent number: 4912791
    Abstract: Textile materials are pretreated in aqueous media by alkaline scouring and/or bleaching using an assistant comprising a compound of the general formula I ##STR1## where R is C.sub.6 -C.sub.10 -alkyl, X is H, Na, K or NR.sup.1 R.sup.2 R.sup.3 R.sup.4, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each H, C.sub.1 -C.sub.4 -alkyl or --CH.sub.2 --CH.sub.2 --OH.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: April 3, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Streit, Wolfgang Schenk, Matthias Kummer, Johannes P. Dix, Alfred Oftring
  • Patent number: 4908437
    Abstract: The invention relates to novel thienone compounds useful in dyeing fibers, of the formula: ##STR1## where R.sup.1 is cyano, C.sub.1 -C.sub.4 -alkoxycarbonyl, carbamoyl or C.sub.1 -C.sub.4 -monoalkylcarbamoyl or -dialkylcarbamoyl,R.sup.2 is hydrogen, C.sub.1 -C.sub.8 -alkyl, substituted or unsubstituted phenyl, furyl, thienyl or halogen,X is nitrogen or CR.sup.4 where R.sup.4 is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, cyano or substituted or unsubstituted phenyl, andR.sup.3 is an aniline, thiazole, indole, styrol or isoindole radical, with the proviso that if R.sup.1 is cyano, X is CH and R.sup.3 is 4-dimethylaminophenyl or styryl, then R.sup.2 is not methyl or phenyl and that if R.sup.1 is cyano, X is CH and R.sup.3 is phenyl or 4-methoxyphenyl, then R.sup.2 is not phenyl.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: March 13, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Hansen, Johannes P. Dix, Helmut Reichelt, Masahiro Hayashi