Patents Assigned to BASF Lacke+Farben
  • Patent number: 4830775
    Abstract: Novel zinc, lead or zinc/lead salts of carboxylic acids of the formula ##STR1## where Y is --CO-- or --SO.sub.2 --, X is H or --NO.sub.2 and n is 1 or 2. The salts, in particular the basic salts of (I), are useful corrosion-inhibitors for coating systems, especially for aqueous or water-dilutable systems.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: May 16, 1989
    Assignee: BASF Lacke .+-. Farben Aktiengesellschaft
    Inventors: Egon Liedek, Gerhard Haegele
  • Patent number: 4830722
    Abstract: The invention relates to a water-dilutable binder for cationic electrocoating finishes. For the preparation of the binders po0 (A) a di-epoxide compound with an epoxide equivalent weight below 2,000 is reacted with(B) a phenol- or thiol-containing compound which reacts monofunctionally with epoxide groups, and with(C) primary and/or secondary amines or their salts and/or the salt of a tertiary amine, a sulfide/acid mixture or phosphine/acid mixture or a mixture of these compounds, as well as, if desired, with(D) a polyfunctional alcohol, a polycarboxylic acid, a polysulfide or a polyphenol.The components A and B are used in a molar ratio of from 10:1 to 1:1, preferably from 4: to 1.5:1 and the reaction of the component A with the component B is carried out at 100.degree. to 190.degree. C., if desired in the presence of a catalyst.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: May 16, 1989
    Assignee: BASF Lacke & Farben AG
    Inventors: Arnold Dobbelstein, Michael Geist, Gunther Ott, Georg Schon
  • Patent number: 4824927
    Abstract: The invention relates to water-dilutable binders for cationic electrocoating finishes. For the preparation of the binders, a di-epoxide compound, together with at least one mono-epoxide compound if desired, is converted by a polyaddition, carried out at 100.degree. to 195.degree. C. and initiated by a monofunctionally reacting initiator carrying either an alcoholic OH group, a phenolic OH group or an SH group, to form an epoxy resin which then subsequently is modified with(A) primary and/or secondary amines or their salts and/or the salt of a tertiary amine, a sulfide/acid mixture or a phosphine/acid mixture and with, if desired,(B) a polyfunctional alcohol, a polycarboxylic acid, a polysulfide or a polyphenol.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: April 25, 1989
    Assignee: BASF Lacke & Farben AKT
    Inventors: Arnold Dobbelstein, Michael Geist, Gunther Ott, Georg Schon
  • Patent number: 4817690
    Abstract: The invention relates to a device for filling transportable vessels with flowable materials in free fall, with a filler socket arranged on the top wall of the vessel, a first clamping ring which can be fastened removably to the filler socket, a second clamping ring which can be attached on the topside of the first clamping ring, and a flexible filler hose fastened at its respective ends to the first clamping ring and to the second clamping ring, the flexible filler hose being folded back inwards on itself in the region of the first clamping ring and having a weighting ring in its reversal region.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: April 4, 1989
    Assignee: Basf Lacke & Farben AG
    Inventors: Dieter Heeren, Friedrich Vock
  • Patent number: 4818356
    Abstract: The invention relates to a process for coating an electrically conductive substrate, the said substrate being immersed in an aqueous bath based on a cationic synthetic resin binder which is at least in part neutralized with acids and contains amino and/or hydroxyl groups. The said bath contains a mixture of crosslinking agents as well as pigments, fillers, corrosion inhibitors, paint auxiliary substances, and, if appropriate, catalysts, as well as organic solvents in an amount of up to 15% by weight based on the total weight of the coating, the said substrate being cathodically connected. By the action of direct current, a film is deposited on the substrate, after which the said substrate is removed from the bath and the film is cured by stoving, the mixture of crosslinking agents comprising at least two crosslinking agents of different reactivities based on activated esters and/or polyisocyanates blocked by different blocking agents.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: April 4, 1989
    Assignee: BASF Lacke & Farben Aktiengesellschaft
    Inventors: Michael Geist, Gunther Ott, Georg Schon, Arnold Dobbelstein, Wolfgang Batzill
  • Patent number: 4788260
    Abstract: The invention relates to water-dispersible binders which are intended for cationic electropaints and are based on reaction products which are formed from modified epoxy resins and primary and/or secondary amines and which can, if desired, also contain crosslinking agents, pigments, flow-control agents and other customary auxiliaries. They contain as reaction products those which have been prepared by reacting(A) low molecular weight epoxy resins which contain epoxy compound aromatic groups and have an epoxide equivalent weight of less than 375 with(B) aliphatic and/or alicyclic polyfunctional alcohols having hydroxyl groups or carboxylic acids having carboxylic groups and both having a molecular weight of less than 350 and addition of the hydroxyl groups and carboxylic groups to the epoxy groups of (A) in such a way that the reaction products of (A) and (B) contain 10-45% of aromatic groups, calculated as the phenylene group, and have terminal epoxy groups.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: November 29, 1988
    Assignee: BASF Lacke & Farben AG
    Inventors: Wolfgang Batzill, Horst Diefenbach, Michael Geist, Eberhard Schupp
  • Patent number: 4781808
    Abstract: The invention relates to an aqueous cathodic electrocoating material which contains a synthetic resin binder containing amino and/or hydroxyl groups and capable of being rendered water-soluble by the addition of an acid. The synthetic resin binder contains a mixture of crosslinking agents, as well as pigments, fillers, corrosion inhibitors, surface coating assistants, if appropriate catalysts, and organic solvents in an amount of up to 15% by weight, based on the total weight of the coating material. The mixture of crosslinking agents consists of at least two crosslinking agents which possess different reactivities and are based on activated esters and/or polyisocyanates blocked with different blocking agents. Different reactivities means that the crosslinking reactions begin at temperatures which are at least 10.degree. C. apart. The crosslinking reagent which reacts first is present in an amount of from 15 to 60 mol %, based on the mixture of crosslinking agents.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: November 1, 1988
    Assignee: BASF Lacke & Farben Aktiengesellschaft
    Inventors: Michael Geist, Georg Schon, Arnold Dobbelstein, Guther Ott
  • Patent number: 4780524
    Abstract: The invention relates to a water-dilutable binder for cationic electrocoating finishes. For the preparation of the binders(A) a di-epoxide compound with an epoxide equivalent weight below 2,000 is reacted with(B) a phenol- or thiol-containing compound which reacts monofunctionally with epoxide groups, and with(C) primary and/or secondary amines or their salts and/or the salt of a tertiary amine, a sulfide/acid mixture or phosphine/acid mixture or a mixture of these compounds, as well as, if desired, with(D) a polyfunctional alcohol, a polycarboxylic acid, a polysulfide or a polyphenol.The components A and B are used in a molar ratio of from 10:1 to 1:1, preferably from 4:1 to 1.5:1 and the reaction of the component A with the component B is carried out at 100.degree. to 190.degree. C., if desired in the presence of a catalyst.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: October 25, 1988
    Assignee: BASF Lacke + Farben AG
    Inventors: Arnold Dobbelstein, Michael Geist, Gunther Ott, Georg Schon
  • Patent number: 4769420
    Abstract: Binders which are rendered water-dilutable by protonation with an acid, a process for their preparation and their use.These binders are obtainable by reacting a(A) Reaction product of a(a) carboxyl-containing component, consisting of a(a1) carboxyl-containing butadiene/acrylonitrile copolymer having a molecular weight of from 500 to 8,000, if necessary as a mixture with(a2) a dicarboxylic acid which differs from (a1) and, if appropriate,(a3) a monocarboxylic acid and(b) a diprimary and/or primary/secondary amine, with the proviso that from 0.7 to 5 moles of the said amine are used per mole of carboxyl groups of component (a),with one or more(B) epoxy resins having a mean molecular weight from 300 to 6,000 and containing on average from 1.5 to 3.0 epoxide groups per molecule and, if required,(C) an aliphatic or cycloaliphatic secondary amine.In combination with a crosslinking agent, they are useful as coating materials, in particular for cathodic electrocoating.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: September 6, 1988
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Thomas Schwerzel, Rolf Osterloh, Eberhard Schupp, Klaas Ahlers
  • Patent number: 4762903
    Abstract: The invention relates to water-dilutable binders for cationic electrocoating finishes, the said binders containing latent primary amino groups. In order to prepare the binders, an epoxy resin is reacted with a polyamine, which in addition to a sterically hindered primary amino group also contains at least one primary amino group blocked by reaction with a ketone or aldehyde, and, if appropriate, further primary or secondary amines.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: August 9, 1988
    Assignee: BASF Lacke & Farben AG
    Inventors: Michael Geist, Gunther Ott, Georg Schon
  • Patent number: 4740384
    Abstract: The invention relates to a process and an apparatus for applying two or more colors of paint by applying a first paint to at least part of a substrate, followed by a second and, if desired, further different-colored paints to different parts of the substrate and hardening the applied coats of paint by baking, which comprises applying the second and if desired the further different-colored paints without interim baking of the first paint to the preselected different parts of the substrate using electrostatic atomization at stationary atomizer edges involving transport of the paint particles in an electric field and, after the first and subsequent paints have been applied, hardening all coats of paint together by baking.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: April 26, 1988
    Assignee: BASF Lacke & Farben AG
    Inventors: Roland A. Meisner, Hans Pollinger, Bernd Kruger
  • Patent number: 4721741
    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: October 1, 1986
    Date of Patent: January 26, 1988
    Assignee: BASF Lacke+Farben AG
    Inventor: Michael Geist