Patents by Inventor Frank P. Woerner

Frank P. Woerner 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).

  • Continuous preparation of aqueous melamine/formaldehyde precondensate solutions
    Patent number: 4996289
    Abstract: The continuous preparation of melamine/formaldehyde precondensate solutions is carried out by a process in which melamine, formaldehyde and, if required, modifiers and/or additives are metered into a continuous mixer, and the homogeneous mixture is passed into a single-screw or twin-screw extruder, condensed at elevated temperatures, cooled and extruded.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: February 26, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Berbner, Klaus Ebel, Michael Kuczaty, Bernhard Seid, Frank P. Woerner, Hans D. Zettler
  • Preparation of resilient melamine foams
    Patent number: 4666948
    Abstract: Resilient foams based on melamine resins are prepared by foaming an aqueous solution which contains a melamine/formaldehyde precondensate, an emulsifier, a volatile blowing agent and a curing agent and then curing the foam. In this process, from 0.2 to 4% by weight of an alkali metal, alkaline earth metal or aluminum salt of an organic, preferably polybasic acid, of a polyphosphoric acid or of a boron acid are added to the aqueous solution.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: May 19, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank P. Woerner, Peter Neumann, Harald Mahnke, Josef Lamprecht, Dieter Horn, Gerhard Turznik, Friedrich Kraus, Hanshelmut Kaeppel, Eduard Heim
  • Resilient foam based on a melamine-formaldehyde condensate
    Patent number: 4540717
    Abstract: A resilient foam, based on a melamine-formaldehyde condensate, which exhibits a number of important performance characteristics, namely:(a) low bulk density(b) low heat conductivity(c) low compressive strength(d) low modulus of elasticity(e) large deflection on break(f) low flammabilityThe foam may be used particularly for heat and sound insulation in the construction industry.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: September 10, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Harald Mahnke, Frank P. Woerner, Heinz Weber, Guenter Kreibiehl
  • Stabilized melamine resin foams
    Patent number: 4530940
    Abstract: Stabilized melamine resin foams contain, as a stabilizer, a copper or iron compound in an amount corresponding to from 10 ppm to 3%, based on the weight of the melamine resin, of Cu or Fe, preferably an oxide, hydroxide or carbonate of copper.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: July 23, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank P. Woerner, Horst Reimann, Harald Mahnke, Peter Neumann, Gerhard Turznik, Hanshelmut Kaeppel
  • Resilient foam based on a melamine-formaldehyde condensate
    Patent number: 4511678
    Abstract: A resilient foam, based on a melamine-formaldehyde condensate, which exhibits a number of important performance characteristics, namely:(a) low bulk density(b) low heat conductivity(c) low compressive strength(d) low modulus of elasticity(e) large deflection on break(f) low flammabilityThe foam may be used particularly for heat and sound insulation in the construction industry.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: April 16, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Harald Mahnke, Frank P. Woerner, Heinz Weber, Guenter Kreibiehl
  • Manufacture of resilient foams based on a melamine-formaldehyde condensate
    Patent number: 4334971
    Abstract: A process for the manufacture of a resilient foam based on a melamine-formaldehyde condensate, wherein an aqueous or alcoholic solution or dispersion containing a melamine-formaldehyde precondensate, an emulsifier, a blowing agent and a hardener is foamed by ultra-high-frequency irradiation and the foam is hardened by crosslinking the precondensate. The foam may be employed for heat and sound insulation, and as a packaging material.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: June 15, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Harald Mahnke, Guenter Kreibiehl, Heinz Weber, Frank P. Woerner