Patents by Inventor Joern Rueter

Joern Rueter 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: 4711925
    Abstract: A precipitation procedure for preparing pulverulent coating compositions of high molecular weights by post condensation and based on polyamides having at least ten aliphatically bound carbon atoms per carbonamide group. The starting materials are uncontrolled polyamides having a relative solution viscosity of between 1.7 and 2.0 (measured in 0.5% meta cresol solution at 25.degree. C.) and contain not more than 0.2% by weight of phosphoric acid. After the cooling stage of the precipitation step of the polyamides, from 0.3 to 1.2% by weight of phosphoric acid referred to the polyamide are dispersed in the suspension prior to the precipitation in the solution or after the precipitation stage.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: December 8, 1987
    Assignee: Huls Aktiengesellschaft
    Inventors: Salih Mumcu, Hans J. Panoch, Joern Rueter
  • Patent number: 4157330
    Abstract: Cyclic esters of dodecanedioic acid with aliphatic diols of 2-12 carbon atoms in the chain and substituted by up to two alkyl of 1-4 carbon atoms, are produced by thermolysis of corresponding linear polyesters under reduced pressure in the presence of catalysts by subjecting the linear polyesters to thermolysis at temperatures between 200.degree. and 300.degree. C., and by utilizing as catalyst a tin(II) salt of an aliphatic monocarboxylic acid of up to 18 carbon atoms, of an aromatic or araliphatic monocarboxylic acid of up to 36 carbon atoms, of an aliphatic or aromatic hydroxy-, poly-, ketocarboxylic acid or of a dicarboxylic acid of up to 18 carbon atoms; or a mixture of an organotin compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl of 1-18 carbon atoms, or aryl or aralkyl of 6-36 carbon atoms, and an O,O-dialkyl-(3,5-di-tert.-butyl-4-hydroxybenzyl)-phosphonate wherein each alkyl is of 2-18 carbon atoms.
    Type: Grant
    Filed: January 6, 1978
    Date of Patent: June 5, 1979
    Assignee: Chemische Werke Huels Aktiengesellschaft
    Inventors: Joern Rueter, Klaus Burzin, Karl-Heinz Magosch, Roland Feinauer
  • Patent number: 4129551
    Abstract: Nonflammable molding compositions consisting of:1. a thermoplastic, saturated linear polyester;2. a triarylphosphine oxide or an aryl or alkyl ester of an arylphosphinic acid;3. a nuclear-brominated alkylbenzene;4. customary auxiliary agents and additives; and containing, based on (1) through (4), 0.5 - 10% by weight of bromine and 0.1 - 2% by weight of phosphorus.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: December 12, 1978
    Assignee: Chemische Werke Huels Aktiengesellschaft
    Inventors: Joern Rueter, Raban Grundamann
  • Patent number: 4105672
    Abstract: Cyclic esters of dodecanedioic acid with aliphatic diols of 2-12 carbon atoms in the chain and substituted by up to two alkyl of 1-4 carbon atoms, are produced by thermolysis of corresponding linear polyesters under reduced pressure in the presence of catalysts by subjecting the linear polyesters to thermolysis at temperatures between 200.degree. and 300.degree. C., and by utilizing as catalyst a tin(II) salt of an aliphatic monocarboxylic acid of up to 18 carbon atoms, of an aromatic or araliphatic monocarboxylic acid of up to 36 carbon atoms, of an aliphatic or aromatic hydroxy-, poly-, ketocarboxylic acid or of a dicarboxylic acid of up to 18 carbon atoms; or a mixture of an organotin compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl of 1-18 carbon atoms, or aryl or aralkyl of 6-36 carbon atoms, and an O,O-dialkyl-(3,5-di-tert.-butyl-4-hydroxybenzyl)-phosphonate wherein each alkyl is of 2-18 carbon atoms.
    Type: Grant
    Filed: October 19, 1976
    Date of Patent: August 8, 1978
    Assignee: Chemische Werke Huels Aktiengesellschaft
    Inventors: Joern Rueter, Klaus Burzin, Karl-Heinz Magosch, Roland Feinauer