Patents by Inventor Jan Pecka

Jan Pecka 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).

  • Method for controlled radiation polymerization of olefinic monomers
    Patent number: 4069124
    Abstract: Method for the cationic polymerization of at least one olefinic monomer and more particularly the homopolymerization of a mono-olefinic monomer such as isobutylene and the copolymerization thereof with a di-olefinic monomer (diene) such as butadiene and optionally another mono-olefinic monomer in the presence of, as initiator of a halide of tetravalent vanadium, titanium and zirconium, an activator and under the influence of visible ultraviolet or infra-red light.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: January 17, 1978
    Assignee: Ceskoslovenska akademie ved
    Inventors: Miroslav Marek, Ludek Toman, Jan Pecka
  • Method for controlled radiation polymerization of olefinic monomors
    Patent number: 4069125
    Abstract: Method for the cationic polymerization of at least one olefinic monomer and more particularly the homopolymerization of a mono-olefinic monomer such as isobutylene and the copolymerization thereof with a di-olefinic monomer (diene) such as butadiene and optionally another mono-olefinic monomer in the presence of, as initiator of a halide of tetravalent vanadium, titanium and zirconium, an activator and under the influence of visible ultraviolet or infra-red light.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: January 17, 1978
    Assignee: Ceskoslovenska akademie ved
    Inventors: Miroslav Marek, Ludek Toman, Jan Pecka
  • Method of radiation polymerization and copolymerization of isobutylene by a cationic mechanism
    Patent number: 4025402
    Abstract: Method for the cationic polymerization of at least one olefinic monomer and more particularly the homopolymerization of a mono-olefinic monomer such as isobutylene and the copolymerization thereof with a di-olefinic monomer (diene) such as butadiene and optionally another mono-olefinic monomer in the presence of, as initiator of a halide of tetravalent vanadium, titanium and zirconium, an activator and under the influence of visible ultraviolet or infra-red light.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: May 24, 1977
    Assignee: Ceskoslovenska akademie ved
    Inventors: Miroslav Marek, Ludek Toman, Jan Pecka
  • Method of radiation polymerization and copolymerization of isobutylene by a cationic mechanism
    Patent number: 4025403
    Abstract: Method for the cationic polymerization of at least one olefinic monomer and more particularly the homopolymerization of a mono-olefinic monomer such as isobutylene and the copolymerization thereof with a di-olefinic monomer (diene) such as butadiene and optionally another mono-olefinic monomer in the presence of, as initiator of a halide of tetravalent vanadium, titanium and zirconium, an activator and under the influence of visible ultraviolet or infra-red light.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: May 24, 1977
    Assignee: Ceskoslovenska akademie ved
    Inventors: Miroslav Marek, Ludek Toman, Jan Pecka
  • Method for radiation polymerization and copolymerization of isobutylene by a cationic mechanism
    Patent number: 4018659
    Abstract: Method for the cationic polymerization of at least one olefinic monomer and more particularly the homopolymerization of a mono-olefinic monomer such as isobutylene and the copolymerization thereof with a di-olefinic monomer (diene) such as butadiene and optionally another mono-olefinic monomer in the presence of, as initiator of a halide of tetravalent vanadium, titanium and zirconium, an activator and under the influence of visible ultraviolet or infra-red light.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: April 19, 1977
    Assignee: Ceskoslovenska akademie ved
    Inventors: Miroslav Marek, Ludek Toman, Jan Pecka
  • Method of radiation polymerization and copolymerization of isobutylene by a cationic mechanism
    Patent number: 4012304
    Abstract: Method for the cationic polymerization of at least one olefinic monomer and more particularly the homopolymerization of a mono-olefinic monomer such as isobutylene and the copolymerization thereof with a di-olefinic monomer (diene) such as butadiene and optionally another mono-olefinic monomer in the presence of, as initiator of a halide of tetravalent vanadium, titanium and zirconium, an activator and under the influence of visible ultraviolet or infra-red light.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: March 15, 1977
    Assignee: Ceskoslovenska akademi ved
    Inventors: Miroslav Marek, Ludek Toman, Jan Pecka
  • Process for radiation polymerization and copolymerization of monomers with olefinic double bonds using metal halide catalysts
    Patent number: 3997417
    Abstract: Process for polymerization and copolymerization of momo-olefinic monomers, such as isobutylene, either with one another or with dienes, catalyzed by tetravalent metal halides, and initiated or accelerated by the action of ultraviolet, visible or infrared light. The polymerization or copolymerization can be affected with or without solvent. Suitable solvents are aliphatic, aromatic or halogenated hydrocarbons. The polymerization is carried out at a temperature in a range of from about -140.degree. C. to about +30.degree. C.
    Type: Grant
    Filed: September 28, 1971
    Date of Patent: December 14, 1976
    Assignee: Ceskoslovenska akademie ved
    Inventors: Miroslav Marek, Ludek Toman, Jan Pecka