Patents Assigned to BASF Farben & Fasern AG
  • Patent number: 4769400
    Abstract: The invention relates to a heat-curable binder mixture which comprises an organic synthetic resin A and a crosslinking agent B. Said synthetic resin A can be an epoxy resin, a polyester resin or an acrylate resin having a number average molecular weight of 500 to 20,000 and at least 0.2 equivalent per 100 g of resin of primary and/or secondary amino groups and/or hydroxyl groups, and said crosslinking agent B is an organic compound having at least 2 .beta.-alkoxyalkyl ester groups per molecule.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: September 6, 1988
    Assignee: BASF Farben + Fasern AG
    Inventors: Michael Geist, Gunther Ott, Georg Schon
  • Patent number: 4724254
    Abstract: The invention relates to water-dispersible binding agents for cationic electro-immersion varnishes on the basis of modified epoxy resins. The binding agents are reaction products of(A) low-molecular epoxy resins containing aromatic groups, with an equivalent epoxy weight of less than 375,(B) aliphatic and/or alicyclic polyfunctional alcohols and/or carboxylic acids with a molecular weight less than 350, where the intermediate product obtained from (A) and (B) has a content of aromatic groups of 10 to 45%, calculated as a phenylene group,(C) polyfunctional alcohols, carboxylic acids and/or SH-compounds with a molecular weight of 500 to 5000, and(D) amino alcohols with at least one concealed primary or a tertiary nitrogen atom.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: February 9, 1988
    Assignee: BASF Farben & Fasern AG
    Inventors: Michael Geist, Gunther Ott, Georg Schon
  • Patent number: 4707232
    Abstract: This application discloses a synthetic resin based on alcohol-modified polyepoxides. The synthetic resin can be prepared by reacting a diepoxide, or a mixture of diepoxides, having an epoxide equivalent weight of less than about 500, with compounds with a hydroxyl group, which is reactive towards epoxide groups, in a molar ratio from about 2:1 to about 7:6 at temperatures from about 100.degree. C. to about 180.degree. C. in an organic solvent free of hydroxyl groups. The synthetic resin has terminal epoxide gorups and a mean molecular weight from about 400 to about 5000.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: November 17, 1987
    Assignee: BASF Farben & Fasern AG
    Inventors: Wolfgang Batzill, Arnold Dobbelstein, Michael Geist, Georg Schon, Gunther Ott
  • Patent number: 4691002
    Abstract: The invention relates to unsaturated homo- and/or copolymerizable polyesters which have been prepared from an alcohol component comprising a multivalent alcohol, a carboxylic acid component comprising a multivalent carboxylic acid and optionally, hydroxycarboxylic acids or their derivatives capable of forming esters, and an acid component selected from the group consisting of maleic acid, fumaric acid, itaconic acid, mesaconic acid, aconitic acid, their derivatives capable of forming esters and mixtures thereof. As part of the alcohol coponent, hydroxylated polybutadiene with an average molecular weight of 2400 to 3000 and a hydroxy-functionality of 2.2 to 2.4 is condensed into the polyester. The polyesters exhibit useful flow anomalies which are due to their molecular structure.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: September 1, 1987
    Assignee: BASF Farben & Fasern AG
    Inventors: Gunther Hegemann, Karin Miedeck
  • Patent number: 4686249
    Abstract: A heat-hardenable binder mixture based on organic resins comprises an organic resin having primary and/or secondary and, if appropriate, also additional tertiary amino groups and a crosslinking agent based on an organic compound which contains at least 2 .beta.-hydroxyalkyl ester groups. The binder mixture can additionally contain pigments, fillers, crosslinking catalysts, corrosion inhibitors and other paint auxiliaries. The binder mixture is used in a process for preparing coatings by applying a coating agent in the form of a film to a substrate and subsequently hardening the film by stoving.
    Type: Grant
    Filed: August 27, 1985
    Date of Patent: August 11, 1987
    Assignee: BASF Farben + Fasern AG
    Inventors: Horst Diefenbach, Michael Geist
  • Patent number: 4684676
    Abstract: The invention relates to binders for cathodically depositable coating compositions for the electrocoating lacquering process using cationic synthetic resins, which binders have been obtained by polymerizing (A) 5 to 95% by weight of ethylenically unsaturated polymerizable monomers in the presence of (B) 95 to 5% by weight of a cationic synthetic resin in an aqueous phase, the total amount of the components (A) and (B) being 100%.Esters of acrylic acid and/or methacrylic acid are preferable for use as component (A). The invention also relates to a process for preparing the binders and to their use for cathodically depositable electrocoating lacquers.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: August 4, 1987
    Assignee: BASF Farben & Fasern AG
    Inventors: Horst Diefenbach, Arnold Dobbelstein, Hans-Dieter Hille
  • Patent number: 4661410
    Abstract: The heat-hardenable binder mixture based on organic resins comprises an organic resin having primary and/or secondary and, if appropriate, also additional tertiary amino groups and a cross-linking agent based on an organic compound containing at least 2 carbalkoxymethyl groups. The binder mixture can additionally contain pigments, fillers, cross-linking catalysts, corrosion inhibitors and further finish auxiliaries. The binder mixture is used in a process for preparing coatings by applying a coating agent in the form of a film to a substrate and subsequently hardening the film by baking.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: April 28, 1987
    Assignee: BASF Farben & Fasern AG
    Inventor: Michael Geist
  • Patent number: 4661541
    Abstract: This application discloses a synthetic resin based on alcohol-modified polyepoxides. The synthetic resin can be prepared by reacting a diepoxide, or a mixture of diepoxides, having an epoxide equivalent weight of less than about 500, with compounds with a hydroxyl group, which is reactive towards epoxide groups, in a molar ratio from about 2:1 to about 7:6 at temperatures from about 100.degree. C. to about 180.degree. C. in an organic solvent free of hydroxyl groups. The synthetic resin has terminal epoxide groups and a mean molecular weight from about 400 to about 5000.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: April 28, 1987
    Assignee: BASF Farben & Fasern AG
    Inventors: Wolfgang Batzill, Arnold Dobbelstein, Michael Geist, Georg Schon, Gunther Ott
  • Patent number: 4659450
    Abstract: An improved and substantially contamination free electro-immersion finish is provided on an electrically conductive substrate such as a motor vehicle body. An immersion tank holds an aqueous liquid containing an electrophoretically precipitable resin. The substrate to be coated is immersed in the liquid and transported through the tank. The bath liquid in the lower region of the tank is circulated parallel to the direction of transport of the substrate. The bath liquid in the upper region is circulated opposite to the direction of transport of the substrate. The bath liquid may be recirculated by removing the liquid from the tank at the end of the tank where the substrate is removed from the tank. The bath liquid may be purified by filter units prior to being returned to the tank. A separator, such as a cyclone separator, may be disposed in the liquid recirculation conduit ahead of the filtration units.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: April 21, 1987
    Assignee: BASF Farben & Fasern AG
    Inventor: Arno Lauke
  • Patent number: 4627876
    Abstract: The invention relates to a printing ink which is to be used for printing paper and which consists of pigment, an alkyd resin binder which has been modified with fatty acids having an iodine number below 20, and, if desired, further binder and further customary constituents, such as lubricants, solvents, thickeners and thixotropic agents. The alkyd resin is an epoxy alkyd resin having an acid number below 11 and is present in the printing ink in an amount of at least 40% by weight, based on the total binder content. It has been prepared by reacting(a) a fatty acid of 6-20 carbon atoms or a mixture of such acids or triglycerides thereof,(b) a polyol,(c) an epoxy resin having a molecular weight of 380-2,900, an epoxide equivalent weight of 175 to 2,050 and an ester equivalent weight of 80 to 200 and(d) a dicarboxylic acid, the proportion of the epoxy resin amounting to 1 to 40 mole %, based on the total amount of polyol and epoxy resin.
    Type: Grant
    Filed: May 8, 1985
    Date of Patent: December 9, 1986
    Assignee: BASF Farben & Fasern AG
    Inventors: Werner Fries, Karl-Wilhelm Klemm
  • Patent number: 4622117
    Abstract: The invention relates to a self-crosslinking heat-curable binder, in particular for electrocoating finishes, based on an organic synthetic resin which contains primary and/or secondary hydroxyl groups, esterified carboxyl groups and quaternary ammonium groups and can be diluted with water as a result of partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which has a negative inductive effect.
    Type: Grant
    Filed: February 7, 1985
    Date of Patent: November 11, 1986
    Assignee: BASF Farben & Fasern AG
    Inventors: Michael Geist, Gunther Ott
  • Patent number: 4609691
    Abstract: The invention relates to water-dispersible binders for cationic electro-dip paints with a base of modified epoxy resins. The binders are produced by reaction of(A) epoxy resins having a molecular weight of at least 350 with(B) elasticized polyphenols having a molecular weight of over 350 with addition to the epoxide groups and further reaction of the reaction product of (A) and (B) with(C) primary and/or secondary amines or ammonium salts to obtain the required water-dispersibility.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: September 2, 1986
    Assignee: BASF Farben & Fasern AG
    Inventors: Michael Geist, Gunther Ott, Georg Schon
  • Patent number: 4581294
    Abstract: The heat-hardenable binder mixture based on organic resins comprises an organic resin having primary and/or secondary and, if appropriate, also additional tertiary amino groups and a cross-linking agent based on an organic compound containing at least 2 carbalkoxymethyl groups. The binder mixture can additionally contain pigments, fillers, cross-linking catalysts, corrosion inhibitors and further finish auxiliaries. The binder mixture is used in a process for preparing coatings by applying a coating agent in the form of a film to a substrate and subsequently hardening the film by baking.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: April 8, 1986
    Assignee: BASF Farben & Fasern AG
    Inventor: Michael Geist
  • Patent number: 4566963
    Abstract: This application discloses water-dispersible binders which are based on modified epoxide/amine adducts and are the reaction products ofA. polyepoxides having an epoxide equivalent greater than 1 and a mean molecular weight M.sub.n of 140 to 5,000 withB. diphenylolalkanoate esters andC. amines.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: January 28, 1986
    Assignee: BASF Farben + Fasern AG
    Inventors: Gunther Ott, Arnold Dobbelstein, Michael Geist, Georg Schon, Klaas Ahlers
  • Patent number: 4565730
    Abstract: A coating composition, in particular for producing the transparent topcoat of a multilayer coating. The coating composition contains as binders two acrylic polymers, A and B, as well as aliphatic and/or cycloaliphatic polyisocyanates. Acrylic polymer A has a molecular weight of 800 to 4,000, a hydroxyl number of 80 to 180 and a glass transition temperature of below -10.degree. C. Acrylic polymer B has a molecular weight of 3,000 to 10,000, a hydroxyl number of 40 to 120 and a glass transition temperature of -10.degree. C. to +10.degree. C. Whereas in acrylic polymer A the proportion of acrylic acid esters predominates, polymer B contains methacrylic acid esters as predominant monomer components.
    Type: Grant
    Filed: June 14, 1984
    Date of Patent: January 21, 1986
    Assignee: BASF Farben & Fasern AG
    Inventors: Ulrich Poth, Fritz Bartol, Adolf Machholz
  • Patent number: 4557976
    Abstract: The invention relates to a heat-hardenable binder mixture which comprises(A) an organic nonacidic resin having a hydroxyl group content of at least 0.2 equivalent in 100 g of resin and having a molecular weight of at least 850, and(B) a crosslinking agent based on an organic compound which contains at least 2 carbalkoxymethyl ester groups per molecule.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: December 10, 1985
    Assignee: BASF Farben & Fasern AG
    Inventors: Michael Geist, Horst Diefenbach
  • Patent number: 4558090
    Abstract: A water-dilutable coating agent for preparing the base layer of a multilayer coating. The coating agent contains pigments and optionally flow-control agents, thixotroping agents, fillers, organic solvents and other customary auxiliaries.
    Type: Grant
    Filed: October 2, 1984
    Date of Patent: December 10, 1985
    Assignee: BASF Farben & Fasern AG
    Inventors: Hermann-Josef Drexler, Franz Ebner, Hans-Dieter Hille, Ulrich Poth
  • Patent number: 4554212
    Abstract: The invention relates to binders for cathodically depositable coating compositions for the electrocoating lacquering process using cationic synthetic resins, which binders have been obtained by polymerizing (A) 5 to 95% by weight of ethylenically unsaturated polymerizable monomers in the presence of (B) 95 to 5% by weight of a cationic synthetic resin in an aqueous phase, the total amount of the components (A) and (B) being 100%. Esters of acrylic acid and/or methacrylic acid are preferable for use as component (A). The invention also relates to a process for preparing the binders and to their use for cathodically depositable electrocoating lacquers.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: November 19, 1985
    Assignee: BASF Farben & Fasern AG
    Inventors: Horst Diefenbach, Arnold Dobbelstein, Hans-Dieter Hille
  • Patent number: 4548965
    Abstract: The invention relates to water-dispersible binders for cationic electrocoating finishes, which are obtained by reaction of(A) epoxy resins containing low molecular weight aromatic groups and having an epoxide equivalent weight of less than 375 with(B) aliphatic and/or alicyclic polyfunctional alcohols or carboxylic acids having a number average molecular weight of less than 350, further reaction of the product of (A) and (B) with(C) a polyfunctional alcohol having a molecular weight of more than 350, addition at the epoxide groups taking place so that the reaction products of (A) and (B) contain an amount of aromatic groups of from 10 to 45% by weight, calculated as phenylene groups, and further modification of the resulting intermediate with(D) primary and/or secondary amines or ammonium salts in order to achieve the required water-dispersibility.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: October 22, 1985
    Assignee: BASF Farben & Fasern AG
    Inventors: Michael Geist, Horst Diefenbach, Arnold Dobbelstein
  • Patent number: 4539385
    Abstract: The invention relates to a self-crosslinking heat-curable binder, in particular for electrocoating finishes, based on an organic synthetic resin which contains primary and/or secondary hydroxyl groups, esterified carboxyl groups and quaternary ammonium groups and can be diluted with water as a result of partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which has a negative inductive effect.
    Type: Grant
    Filed: June 14, 1984
    Date of Patent: September 3, 1985
    Assignee: BASF Farben & Fasern AG
    Inventors: Michael Geist, Gunther Ott