Patents by Inventor Gunther Kirsch

Gunther Kirsch 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).

  • 1-hydroxydihydrophosphole oxides and 1-hydroxy-phospholane oxides, preparation thereof and use thereof as flame retardants
    Patent number: 6087423
    Abstract: Salts of 1-hydroxydihydrophosphole oxides and 1-hydroxyphospholane oxides and use thereof as flame retardants. The salts of 1-hydroxydihydrophosphole oxides and 1-hydroxyphospholane oxides are useful as flame retardants, especially for plastics such as polyester or polyamide. The aluminum salts are preferred.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: July 11, 2000
    Assignee: Ticona GmbH
    Inventors: Hans-Jerg Kleiner, Winfried Budzinsky, Gunther Kirsch
  • Flameproofed polyester molding compositions
    Patent number: 6013707
    Abstract: Polyesters such as polyethylene terephthalate or polybutylene terephthalate are provided with a flame-retardant finish by addition of calcium salts or aluminum salts of phosphinic or diphosphinic acids.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: January 11, 2000
    Assignee: Ticona GmbH
    Inventors: Hans-Jerg Kleiner, Winfried Budzinsky, Gunther Kirsch
  • Salts of phosphonous acids and use thereof as flame retardants in plastics
    Patent number: 5891226
    Abstract: Salts of phosphonous acids are useful as flame retardants in plastics. Preferred salts are calcium or aluminum salts of phenylphosphonous acid and of methanephosphonous acid. Plastic molding materials rendered flame-retardant in this way are useful for manufacturing molded parts, especially electrical components, mechanical components, plugs, mounts, housings, coverings, sheathings and overcoatings.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: April 6, 1999
    Assignee: Ticona GmbH
    Inventors: Hans-Jerg Kleiner, Winfried Budzinsky, Gunther Kirsch
  • Flameproofed polyester molding composition
    Patent number: 5780534
    Abstract: Polyesters such as polyethylene terephthalate or polybutylene terephthalate are provided with a flame-retardant finish by addition of calcium salts or aluminum salts of phosphinic or diphosphinic acids.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: July 14, 1998
    Assignee: Ticona GmbH
    Inventors: Hans-Jerg Kleiner, Winfried Budzinsky, Gunther Kirsch
  • Low-flammability polyamide molding materials
    Patent number: 5773556
    Abstract: Low-flammability polyamide molding materials are obtained by admixing calcium or aluminum phosphinates. These salts confer improved flame protection on polyamides compared with other metal salts.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: June 30, 1998
    Assignee: Ticona GmbH
    Inventors: Hans-Jerg Kleiner, Winfried Budzinsky, Gunther Kirsch
  • Molding compositions based on oxymethylene polymers
    Patent number: 4169867
    Abstract: A thermoplastic molding composition being a suitable material for technical purposes comprises a mixture of an oxymethylene polymer and of an elastomeric copolyester having short-chain and long-chain diol elements as well. The molding composition is prepared by mixing and homogenizing the components and may contain usual additives, especially stabilizers.
    Type: Grant
    Filed: October 15, 1975
    Date of Patent: October 2, 1979
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karlheinz Burg, Gunther Kirsch
  • Thermoplastic polyamide moulding compositions
    Patent number: 4014957
    Abstract: The present invention relates to thermoplastic moulding compositions of (A) 99.5 to 80% by weight, of at least one amorphous linear polyamide and (B) 0.5 to 20% by weight of at least one segmented thermoplastic elastomeric copolyester. These novel moulding compositions combine good toughness and hardness with good elongation and stiffness properties as well as good flowing properties of the molten material.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: March 29, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gunther Kirsch, Harald Cherdron, Walter Herwig