Patents by Inventor Wilhelm Elser

Wilhelm Elser 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: 6462113
    Abstract: Copolymerizates of methyl methacrylate and butyl methacrylate are used as plastisols in the automotive sector and as floor coverings. The invention describes a way to increase the storage stability of the plastisols by using small amounts of cross-linking agents.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: October 8, 2002
    Assignee: Roehm GmbH & Co. KG
    Inventors: Wilhelm Elser, Guenther Schmitt, Ursula Rausch, Theodor Mager
  • Patent number: 6337360
    Abstract: Poly(meth)acrylate dispersions, comprised of: (A) 50-90 wt. % methacrylic acid esters; (B) 5-30 wt. % acrylic acid alkyl esters; [lit., “acrylic acid acrylic esters”]; (C) 2-10 wt. % of another functionalized monomer; (D) 2-10 wt. % of a radically polymerizable carboxylic acid or a polycarboxylic acid or a partially esterified polycarboxylic acid; and (E) 0-40 wt. % of a monomer which is copolymerizable with components (A) to (D).
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: January 8, 2002
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Hubert Scheuermann, Dieter Tessmer, Karl Foelsch, Wilhelm Elser, Michael Wicke
  • Patent number: 6323292
    Abstract: Poly(meth)acrylate dispersions, comprised of: (A) 50-90 wt. % methacrylic acid esters; (B) 5-30 wt. % acrylic acid alkyl esters; (C) 2-10 wt. % of another functionalized monomer; (D) 2-10 wt. % of a radically polymerizable carboxylic acid or a polycarboxylic acid or a partially esterified polycarboxylic acid; and (E) 0-40 wt. % of a monomer which is copolymerizable with components (A) to (D).
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: November 27, 2001
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Hubert Scheuermann, Dieter Tessmer, Karl Foelsch, Wilhelm Elser, Michael Wicke
  • Publication number: 20010044491
    Abstract: Copolymerizates of methyl methacrylate and butyl methacrylate are used as plastisols in the automotive sector and as floor coverings. The invention describes a way to increase the storage stability of the plastisols by using small amounts of cross-linking agents.
    Type: Application
    Filed: December 8, 1997
    Publication date: November 22, 2001
    Inventors: WILHELM ELSER, GUENTER SCHMITT, URSULA RAUSCH, THEODOR MAGER
  • Publication number: 20010025077
    Abstract: Poly(meth)acrylate dispersions, comprised of:
    Type: Application
    Filed: May 11, 2001
    Publication date: September 27, 2001
    Applicant: ROEHM GMBH CHEMISCHE FABRIK
    Inventors: Hubert Scheuermann, Dieter Tessmer, Karl Foelsch, Wilhelm Elser, Michael Wicke
  • Patent number: 6268065
    Abstract: A hot-sealable coated substrate comprising a primer layer from an aqueous poly(meth)acrylate dispersion, comprised of: (A) 50-90 wt. % methacrylic acid esters; (B) 5-30 wt. % acrylic acid alkyl esters [lit., “acrylic acid acrylic esters”]; (C) 2-10 wt. % of another functionalized monomer; (D) 2-10 wt. % of a radically polymerizable carboxylic acid or a polycarboxylic acid or a partially esterified polycarboxylic acid; and (E) 0-40 wt. % of a monomer which is copolymerizable with components (A) to (D).
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: July 31, 2001
    Assignee: Roehm GmbH Cemische Fabrik
    Inventors: Hubert Scheuermann, Dieter Tessmer, Karl Foelsch, Wilhelm Elser, Michael Wicke
  • Patent number: 6194514
    Abstract: Poly(meth)acrylate dispersions, comprised of: (A) 50-90 wt. % methacrylic acid esters; (B) 5-30 wt. % acrylic acid alkyl esters, [lit., “acrylic acid acrylic esters”]; (C) 2-10 wt. % of another functionalized monomer; (D) 2-10 wt. % of a radically polymerizable carboxylic acid or a polycarboxylic acid or a partially esterified polycarboxylic acid; and (E) 0-40 wt. % of a monomer which is copolymerizable with components (A) to (D).
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: February 27, 2001
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Hubert Scheuermann, Dieter Tessmer, Karl Foelsch, Wilhelm Elser, Michael Wicke
  • Patent number: 5744565
    Abstract: A bead polymerizate P which is prepared by suspension polymerization of monomer and then mechanically comminuted.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: April 28, 1998
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Peter Denkinger, Wilhelm Elser
  • Patent number: 5492944
    Abstract: A powdery bonding agent for paints which is soluble in pure aliphatic compounds, and which is in the form of powdery polymerizate particles, which consists of, at least on the particle surface, of a copolymerizate formed of: (i) 60 to 95 percent by weight of units of at least one hardening monomer selected from the group consisting of (A) isobutylmethacrylate and (B) cycloalkylmethacrylate; and (ii) 5 to 40 percent by weight of units of at least one aliphatic-substance-solubilizing monomer selected from the group consisting of (C) alkylmethacrylates having 6 to 18 carbon atoms in the alkyl residue, where the units of isobutylmethacrylate account for no more than 60 percent by weight and the units of cycloalkylmethacrylates account for no less than 10 percent by weight, based on, in each case, the weight of the copolymerizate.
    Type: Grant
    Filed: November 25, 1994
    Date of Patent: February 20, 1996
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Wilhelm Elser, Karl J. Folsch, Peter Rossberg, Dieter Tessmer, Michael Wicke
  • Patent number: 5185387
    Abstract: An aqueous synthetic resin dispersion having a minimum film forming temperature below 50.degree. C., containing an emulsion polymer having a core/shell structure consisting ofA) 65-90 percent by weight of a weakly crosslinked core polymer having a glass transition temperature, T.sub.g, below 0.degree. C. and an extensibility of at least 150 percent, andB) 10-35 percent by weight of an essentially non-crosslinked shell polymer having a T.sub.g below 60.degree. C. the T.sub.g of the core polymer being at least 10 Centigrade degrees below that of the shell polymer.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: February 9, 1993
    Assignee: Rohm GmbH
    Inventors: Wolfgang Klesse, Wilhelm Elser, Theodor Mager, Juergen Christner, Hertha Kraus, Peter Rossberg, Marliese Weber
  • Patent number: 5139882
    Abstract: Varnishing plastic surfaces with a clear or pigmented aqueous dispersion of a (meth)acrylate copolymer of (a) 20 to 90% by weight of acrylic and/or methacrylic acid alkyl or cycloalkyl esters with 1 to 10 carbon atoms in the ester group; (b) 80 to 10% by weight of acrylic and/or methacrylic acid esters with aromatic groups as the ester group or containing aromatic groups in the ester group; and (c) optionally, small quantities of other monomers, results in the formation of a firmly adhering, water and alcohol resistant finish. The copolymers are preferably emulsion polymers and are synthesized as multiple-phase polymers according to the core-shell model.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: August 18, 1992
    Assignee: Rohm GmbH Chemische Fabrik
    Inventors: Wilhelm Elser, Klaus Langerbeins, Dieter Tessmer, Ursula Rausch, Karl-Josef Folsch
  • Patent number: 5021469
    Abstract: The inventive vehicle, or binder, for water based gloss paints contains, dispersed in a aqueous phase, particles of a multiphase emulsion polymer made up of(a) core material having a glass transition temperature exceeding 40.degree. C. and(b) a shell material having a glass transition temperature of less than 70.degree. C. and at least 20 K. below that of the core material.The particles have an average diameter of less than 200 nm. The composition of the shell material includes an emulsion polymer with at least 4 percent by weight of an ethylenically unsaturated carboxylic acid and more than 80 percent by weight of one or more monomers from the group consisting of styrene and alkyl esters of acrylic and/or methacrylic acid. Paint coats produced with this vehicle are distinguished by a high blocking point.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: June 4, 1991
    Assignee: Rohm GmbH
    Inventors: Klaus Langerbeins, Wolfgang Klesse, Dieter Tessmer, Wilhelm Elser, Hans-Juergen Geyer
  • Patent number: 4582730
    Abstract: A method for priming an absorbent mineral or wood substrate to provide a wet-adhering coating, which comprises applying to said substrate a solution, in an organic solvent which has a normal boiling point between 50.degree. C. and 180.degree. C., of a copolymer of monomers of acrylate and methacrylate esters, of styrene and of vinyl esters, and of dialkylaminoalkyl esters of acrylic acid and of methacrylic acid and their corresponding amides, the maximum glass transition temperature of the copolymer being in the range from 20.degree. C. to 80.degree. C. and the reduced viscosity of the copolymer being in the range from 20 to 60 ml/g.
    Type: Grant
    Filed: January 28, 1985
    Date of Patent: April 15, 1986
    Assignee: Rohm GmbH
    Inventors: Wilhelm Elser, Peter Rossberg, Michael Wicke
  • Patent number: 4542171
    Abstract: A two-step emulsion polymerization method for making an aqueous emulsion of core/shell polymer particles recoverable as a polymer powder by spray drying the emulsion, said polymer being capable of swelling and forming a gel in gasoline, and paints and coating compositions containing gasoline and such a polymer powder as a thickening agent or binder.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: September 17, 1985
    Assignee: Rohm GmbH
    Inventors: Wilhelm Elser, Klaus Huebner, Werner Siol, Theodor Mager, Michael Wicke
  • Patent number: 4460721
    Abstract: A printing ink or varnish having a binder comprising isopropylmethacrylate and hydrophilic comonomers, particularly unsaturated carboxylic acids, their hydroxyalkyl esters, or a mixture thereof; preferably in combination with cellulose esters such as nitrocellulose, as an additional binder. The ink or varnish also contains dissolved or undissolved dyes, as well as a lower alkyl alcohol solvent. The printing and coatings thus produced are characterized by hardness and a high sealing stability.
    Type: Grant
    Filed: May 24, 1983
    Date of Patent: July 17, 1984
    Assignee: Rohm GmbH Chemische Fabrik
    Inventors: Wilhelm Elser, Manfred Munzer
  • Patent number: 4171407
    Abstract: Non-blocking coatings are disclosed, which coatings comprise an acrylate ester emulsion polymer prepared by polymerization in the presence of a degraded starch which, in a 10 percent solution in 1 N NaOH, has a viscosity not greater than 15 mPa . s at a velocity gradient D=532.1 s.sup.-1.
    Type: Grant
    Filed: December 15, 1977
    Date of Patent: October 16, 1979
    Assignee: Rohm GmbH
    Inventors: Wilhelm Elser, Klaus Huebner, Hans Ottofrickenstein, Hans Boessler
  • Patent number: 4104227
    Abstract: Aqueous film-forming dispersions of a synthetic resin, said resin containing from 0.5 to 5 percent by weight of a heterocyclic comonomer of the formula ##STR1## wherein A--B is --C.dbd.C-- or --CH--CH--; R.sup.1 is hydrogen or lower alkyl; and R is an aliphatic group having a polymerizable carbon-carbon double bond therein; water-base paints comprising a pigment and filler dispersed in such an aqueous dispersion; and a method for overpainting substrates of oil-base paints or alkyl resin paints with such a water-base paint.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: August 1, 1978
    Assignee: Rohm GmbH
    Inventors: Hanns Boessler, Wilhelm Elser, Klaus Huebner, Hans Ottofrickenstein