Patents by Inventor Helmut Waniczek

Helmut Waniczek 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: 5023299
    Abstract: The present invention relates to poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carboxylic acids of Mw (weight average) 2000 to 350,000, to their preparation by oxidative degradation of polyolefines or by reaction of "Living" polyolefines with CO.sub.2, to their conversion into poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carbonyl halides and to their use for preparing polyolefine/polycarbonate block copolymers and the block copolymers obtainable by the process according to the invention.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: June 11, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt P. Meuer, Helmut Waniczek, Gerd Sylvester, Josef Witte
  • Patent number: 4986884
    Abstract: A process for the production of monomeric .alpha.-cyanoacrylates by pryrolysis of poly-.alpha.-cyanoacrylates and subsequent distillation of the resulting monomeric .alpha.-cyanoacrylates.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: January 22, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Arlt, Helmut Waniczek, Richard Viard, Dieter Bruck
  • Patent number: 4929689
    Abstract: The present invention relates to poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carboxylic acids of Mw (weight average) 2000 to 350,000, to their preparation by oxidative degradation of polyolefines or by reaction of "Living" polyolefines with CO.sub.2, to their conversion into poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carbonyl halides and to their use for preparing polyolefine/polycarbonate block copolymers and the block copolymers obtainable by the process according to the invention.
    Type: Grant
    Filed: September 27, 1988
    Date of Patent: May 29, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt P. Meurer, Helmut Waniczek, Gerd Sylvester, Josef Witte
  • Patent number: 4885191
    Abstract: The invention relates to a pigment coated with polycyanoacrylate and to a process for coating pigments.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: December 5, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Podszun, Helmut Waniczek
  • Patent number: 4812546
    Abstract: This invention relates to copolymers of .alpha.-cyanoacrylates and acrylates, their preparation and their use.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: March 14, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt P. Meurer, Helmut Waniczek, Christian Ohm, Josef Witte
  • Patent number: 4798873
    Abstract: The present invention relates to poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carboxylic acids of Mw (weight average) 2000 to 350,000, to their preparation by oxidative degradation of polyolefines or by reaction of "Living" polyolefines with CO.sub.2, to their conversion into poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carbonyl halides and to their use for preparing polyolefine/polycarbonate block copolymers and the block copolymers obtainable by the process according to the invention.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: January 17, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt P. Meurer, Helmut Waniczek, Gerd Sylvester, Josef Witte
  • Patent number: 4783515
    Abstract: The present invention relates to copolymers containing ethylene monomer units and .alpha.-cyanacrylate monomer units and processes for their production.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: November 8, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waniczek, Herbert Bartl, Jens Herwig
  • Patent number: 4719164
    Abstract: Improved electrostatographic suspension developers contain a pigment coated with polycyanoacrylate.Wherein the polycyanoacrylate comprises an inner shell on a pigment dispersed in an electrically insulating carrier liquid having a volume resistance of at least 10.sup.9 ohm.cm and a dielectric constant below 3 and the pigment has an additional shell of a copolymer ofA. cationic monomers which contain ammonium, phosphonium or sulfonium groups and of which the anions are derived from CH-acid compounds containing at least one C.sub.6 -C.sub.24 hydrocarbon radical andB. radically polymerizable olefinically unsaturated compounds as comonomers.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: January 12, 1988
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventors: Wolfgang Podszun, Helmut Waniczek, John Goossens
  • Patent number: 4683267
    Abstract: Moulding compounds consisting of a mixture of (A) from 99.99 to 60 parts, by weight, of a polyoxymethylene; (B) from 0 to 40 parts, by weight, of an elastomer having a softening temperature below the crystallite melting point of polyoxymethylene (A) and a freezing point below 0.degree. C.; and (C) from 0.01 to 40 parts, by weight, of an aliphatic, rubber-like, high molecular weight adipate-carbonate mixed ester.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: July 28, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Karola Brudermanns, Helmut Waniczek, Walter Uerdingen, Helmut Hurnik
  • Patent number: 4659335
    Abstract: Mixtures of nitrocellulose and polyether are used as ignition improvers for alcoholic propellants.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: April 21, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Wegner, Helmut Waniczek
  • Patent number: 4650826
    Abstract: This invention relates to stabilized adhesives, to which silyl esters are added for stabilization.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: March 17, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waniczek, Wilfried Kniege
  • Patent number: 4602056
    Abstract: The invention relates to the use of grafted ethylene-vinylacetate copolymers (EVA-copolymers) for the production of hotmelt adhesives.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: July 22, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waniczek, Gerhard Hohmann, Herbert Bartl, Ludwig Mott
  • Patent number: 4533397
    Abstract: Contact lenses prepared from a polymer alloy essentially free from low molecular weight plasticizers and which comprises(A) 97-80% by weight of one or more cellulose esters of one or more aliphatic carboxylic acids, and(B) 3-30% by weight of an aliphatic polymeric compound having ester moieties, carbonate moieties or both ester and carbonate moieties in the polymer chain and having an average molecular weight of 2,000 to 300,000, with less than 2% by weight of compounds having a molecular weight below 500.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: August 6, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Frank Wingler, Helmut Waniczek, Otto-Christian Geyer
  • Patent number: 4533728
    Abstract: Non-aromatic polyester carbonates which have a high molecular weight are obtained if polycondensation is stopped in a reversible manner by the addition of phenol, the phenol is subsequently removed and polycondensation is continued.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: August 6, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waniczek, Walter Uerdingen, Karola Brudermanns
  • Patent number: 4522965
    Abstract: The present invention relates to new thermoplastic contact adhesives. They have high heat resistance and bond strength.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: June 11, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waniczek, Herbert Bartl, Gerhard Hohmann, Ludwig Mott
  • Patent number: 4506045
    Abstract: Thermoplastic moulding compositions consisting of from 1 to 99% by weight of at least one cellulose ester or cellulose mixed ester, from 99 to 1% by weight of an aliphatic polyester or polyether containing carbonate groups and, optionally, standard auxiliaries and additives.
    Type: Grant
    Filed: September 14, 1983
    Date of Patent: March 19, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waniczek, Christian Lindner, Carlhans Suling, Herbert Bartl, Walter Uerdingen
  • Patent number: 4465028
    Abstract: Nitric acid esters of monosaccharides and/or polysaccharides can be used as ignition improvers for alcoholic fuels for internal combustion engines.
    Type: Grant
    Filed: July 8, 1982
    Date of Patent: August 14, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waniczek, Herbert Bartl, Klaus Kruger
  • Patent number: 4395517
    Abstract: Modified olefine polymers of 20 to 98 parts by weight of an olefine homopolymer or copolymer and 0.5 to 80 parts by weight of a polymer containing aliphatic polyester blocks, which polymers are chemically linked through 0.5 to 40 parts by weight of a polymer of a monomer containing olefinic double bonds, a method for their manufacture, and their employment as moulding compositions.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: July 26, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waniczek, Carlhans Suling, Christian Lindner, Herbert Bartl