Patents by Inventor Jurgen Ritz

Jurgen Ritz 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: 4543375
    Abstract: Process for producing storable concentrates for producing paints containing water, undissolved, finely divided, as well as dissolved synthetic resins as paint binders, pigments, optionally paint additives and organic solvents by wet grinding in several stages, wherein(a) in a first grinding stage the undissolved synthetic resins, whereof at least 80% by weight are present with a particle size between 500 .mu.m and 20 mm, mixed with water, the solids content representing 30 to 70% by weight, based on the total mixture quantity, as well as 0 to 60% by weight of dissolved ionic synthetic resins (solids) are ground to a particle size of less than 200 .mu.m and preferably less than 100 .mu.m, and(b) 40 to 100% by weight of the dissolved ionic synthetic resins (solids) and pigments are added and the mixture is ground in a second grinding stage until 95% of all the particles have a particle size of less than 15 .mu.m.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: September 24, 1985
    Assignee: Herberts Gesellschaft mit beschraenkter Haftung
    Inventors: Klaus P. Doebler, Knut Graf, Kurt E. Jager, Friedrich Johannsen, Jurgen Ritz, Dietrich Saatweber
  • Patent number: 4497915
    Abstract: Molding composition containing(a) 2,4,5-triketoimidazolidine precondensates containing terminal oxamide ester, urethane and/or isocyanate groups and(b) customary organic and/or inorganic fillers, which contains the triketo compound (a) in the form of an amorphous precondensate as a reactive filler and(c) at least one further reactive component of a binder from the group consisting of phenolic resins, amine resins, epoxide resins, polyester resins, hydrocarbon resins containing functional groups and/or polymerization resins containing functional groups; their use for manufacturing radiation-, light- and/or heat-resistant and/or abrasion-resistant shaped articles.
    Type: Grant
    Filed: August 31, 1982
    Date of Patent: February 5, 1985
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ernst Horoldt, Kurt Kraft, Jurgen Ritz
  • Patent number: 4482674
    Abstract: A water-dilutable binder for coatings based on reaction products of diene polymers and poly-unsaturated polyfunctional amidoamines, which comprises (a) a cyclorubber, (b) a polyfunctional amidoamine which has been added to component (a) and is derived from reaction with a monomeric unsaturated fatty acid free from conjugated double bonds but having 12 to 18 carbon atoms or from its oligomers, and (c) a polyisocyanate which is bonded to component (b) and whose isocyanate groups which are not bonded to component (b) are blocked, a process for its preparation and its use for paints and coatings.
    Type: Grant
    Filed: December 14, 1982
    Date of Patent: November 13, 1984
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Christoph Just, Jurgen Ritz, Rolf Zimmermann
  • Patent number: 4481311
    Abstract: Binders based on co-condensates of epoxy resins and resols with amines, the epoxy resin being partially defunctionalized and still containing on average 0.5-1.3 epoxide groups per molecular unit, the resol component being composed of methylol compounds of oligomethylene compounds, which are additionally substituted by hydrocarbon or hydroxyalkyl or hydroxyaralkyl radicals, and the amine containing at least one primary or secondary amino group and at most 2 hydroxyl groups.The invention further relates to a process for the preparation of a binder and for the electrophoretic deposition of a cationic resin from an aqueous dispersion onto an article connected as the cathode and to an aqueous electrophoresis bath for carrying out this process.
    Type: Grant
    Filed: August 31, 1982
    Date of Patent: November 6, 1984
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Wolfgang Hesse, Jurgen Ritz, Rolf Zimmermann
  • Patent number: 4373078
    Abstract: Process for the manufacture of hardenable copolymers by the polymerization of unsaturated esters with unsaturated polymerizable monomers containing no free COOH groups, wherein an olefinically unsaturated diester containing OH groups is used as the unsaturated ester, said diester being obtained by reacting olefinically unsaturated dicarboxylic acids or the anhydrides thereof with a polyhydric alcohol and a monoepoxide compound in one or more steps, characterized in that the copolymerization of the diesters with monomers which contain no free COOH groups is carried out in the presence of copolymerizable monomers containing free COOH groups, and the use of the copolymers as hardenable binders for lacquers and/or coating compositions.
    Type: Grant
    Filed: August 19, 1981
    Date of Patent: February 8, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jurgen Ritz, Hannes Fischer, Helmut Plum
  • Patent number: 4289866
    Abstract: A process for the preparation of copolymers in which in a first step an olefinically unsaturated dicarboxylic acid is reacted with a polyhydric alcohol to yield a hemi-ester having free hydroxyl groups, which in a second step is reacted with a monoepoxy compound to yield an olefinically unsaturated diester containing hydroxyl groups, wherein the diester is copolymerized in at least one further step with at least one unsaturated monomer having no free carboxyl groups, and the hardenable reaction product thus obtained is either isolated or hardened with a hardening agent, and coating and adhesive compositions containing a copolymer thus obtained.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: September 15, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jurgen Ritz, Hermann Hotze, Hans-Dieter Mummenthey
  • Patent number: 4072642
    Abstract: An air-drying alkyd resin comprising (I) at least one .alpha.,.beta.-olefinically unsaturated dicarboxylic acid unit or a mixture thereof with (I') a polycarboxylic acid unit being free from polymerizable olefinic and acetylenic bonds, said units bound as an ester, (II) at least one trihydric alcohol unit or a combination thereof with a minor amount of a dihydric alcohol unit, (III) from 10 to 35% by weight (referred to the total alkyd resin) of cyclopentadiene units and (IV) at least one predominantly aliphatic monocarboxylic acid unit, wherein the amount by weight of monocarboxylic acid units is at least as large as the total amount of polycarboxylic acid units, the latter being calculated as anhydride and a process of preparation said resin.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: February 7, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jurgen Ritz, Rolf Zimmermann, Hannes Fischer
  • Patent number: 4047903
    Abstract: A process for preparing abrasives which comprises coating a fibrous substrate with a binder comprising a hardenable resin and subsequently curing the binder coat by electron irradiation. The radiation dose may have an energy of from 175,000 to 1,000,000 eV and a dose of from 0.5 to 30 Mrad. An abrasive which is obtained by the process and which is water resistant.
    Type: Grant
    Filed: September 5, 1975
    Date of Patent: September 13, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Wolfgang Hesse, Jurgen Ritz, Eckart Teschner
  • Patent number: 4016141
    Abstract: An epoxy resin containing acetoacetic ester groups in which at least a part of the acetoacetic ester groups is enolized by atoms of at least one metal from groups I to VI or Ia to Viiia of the Periodic Table according to Meyer and Mendelejeff which metal atoms are partially bound to the enolic oxygen of the acetoacetic ester group in the form of a chelate. A process for preparing said resins wherein an epoxy resin product containing acetoacetic ester groups is further reacted in the presence of a solvent (a) first with an alkali metal alcoholate and subsequently with at least one salt of at least one chelate-forming metal; or (b) with at least one chelate-forming metal in the presence of a tertiary amine or (c) for the preparation of an epoxy resin containing chemically bound atoms of at least one metal partially bound as a chelate an epoxy resin containing acetoacetic ester groups is further reacted in the presence of a solvent with an alcoholate of at least one chelate-forming metal.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: April 5, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jurgen Ritz, Johannes Reese
  • Patent number: 3984444
    Abstract: A process for the isomerization of an ester of an alcohol having 1 to 12 carbon atoms and an fatty acid having 10 to 24 carbon atoms and isolated double bonds to the corresponding compound having conjugated double bonds which comprises isomerizing said ester at a temperature of 0.degree. to 160.degree.C in the presence of at least 0.8% by weight of an alkaline reacting metal alcoholate of a monohydric alcohol having 1 to 12 carbon atoms and a strongly polar aprotic solvent, the weight ratio of the solvent to said ester being at least 0.5:1 and the weight ratio of the alcoholate being calculated as potassium methylate and based on said ester and a coating composition containing as an essential ingredient a binder obtained according to said process.
    Type: Grant
    Filed: December 4, 1974
    Date of Patent: October 5, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jurgen Ritz, Johannes Reese