Patents by Inventor Rudolf Lukas

Rudolf Lukas 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: 4950733
    Abstract: The invention pertains to capryloyloxyalkyl acrylates of the general formulaCH.sub.2 .dbd.CH--CO--O--R--O--CO--(CH.sub.2).sub.6 --CH.sub.3,where R is an alkylene group with 2 to 6 carbon atoms, their polymers and copolymers containing structure units of the general formula ##STR1## where R is alkylene group or different alkylene groups with 2 to 6 carbon atoms and the polymer contains either 100% of the capryloyloxyalkyl acrylate structure units or additional vinyl chloride structure units in the main chain or side chains.The invention also pertains to the method for preparation of capryloyloxyalkyl arcylate which consists in the esterification of hydroxyalkyl caprylate of the general formulaHO--R--O--CO--(CH.sub.2).sub.6 --CH.sub.3,where R has the above given meaning, with acrylic acid, its chloride, bromide or anhydride or of hydroxyalkyl acrylate of the general formulaHO--R--O--CO--CH.dbd.CH.sub.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: August 21, 1990
    Assignee: Ceskoslovenska akademie ved
    Inventors: Rudolf Lukas, Stanislav Sevcik, Vera Paleckova, Vladimir Pacovsky, Zdenek Mrazek, Jareslava Nohova, Olga Pradova, Milos Malik, Miloslav Kolinsky
  • Patent number: 4260541
    Abstract: The invention relates to the method for producing internally plasticized poly(vinyl chloride) suitable for the purposes of earth insulation and medical care. The production method according to the invention consists in the polymerization or copolymerization of vinyl chloride in an aqueous dispersion medium in the presence of up to 50 weight %, related to vinyl chloride, of a polymeric plasticizer prepared by polyesterification of dicarboxylic acids and diols. If desired, the polymerization can be carried out also in the presence of up to 12 weight % of alkyl esters of cyanuric acid and/or the copolymer of ethylene with vinyl acetate as the stabilizers of polymer-chain structure. The polymerization is carried out to the conversion of vinyl chloride 55 to 94% at temperature -20.degree. to +80.degree. C. in the presence of an emulsifier and the resulting polymer is isolated and worked up in the known way.
    Type: Grant
    Filed: September 18, 1979
    Date of Patent: April 7, 1981
    Assignee: Ceskoslovenska Akademie Ved
    Inventors: Miloslav Kolinsky, Vendelin Macho, Juraj Porubsky, Vladislav Kuska, Jaroslav Manas, Stanislav Sykora, Rudolf Lukas