Patents by Inventor Rolf-Volker Meyer

Rolf-Volker Meyer 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).

  • Polyamide blends
    Patent number: 4287315
    Abstract: Polymer blends with improved impact strength consisting essentially of a polyamide and a copolymer of an .alpha.-olefine, an amide and an ester of an .alpha.,.beta.unsaturated carboxylic acid.
    Type: Grant
    Filed: August 23, 1979
    Date of Patent: September 1, 1981
    Inventors: Rolf-Volker Meyer, Rolf Dhein, Friedrich Fahnler
  • Transparent copolyamides from 2,4'-PACM
    Patent number: 4255560
    Abstract: Copolyamides with improved properties are obtained by polycondensing aliphatic and/or aromatic dicarboxylic acids with an amine mixture of diaminodicyclohexyl methanes and optionally homologous polycyclohexyl polyamines and one or more aliphatic diamines, said copolyamide being useful for the production of shaped articles such as films, sheets and injection moldings.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: March 10, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf-Volker Meyer, Rolf Dhein, Friedrich Fahnler, Dietrich Michael, Hans Rudolph, Werner Nielinger
  • Polyamides from 2,4'-diaminodicyclohexyl methane
    Patent number: 4223127
    Abstract: Transparent copolyamides obtained by polycondensing a lactam or a corresponding amino acid, an aliphatic and/or aromatic dicarboxylic acid and a mixture of hydrogenated condensation products of aniline and formaldehyde.
    Type: Grant
    Filed: July 18, 1978
    Date of Patent: September 16, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf-Volker Meyer, Rolf Dhein, Hans Rudolph
  • Transparent polyamides from PACM and a mixture of dicarboxylic acids
    Patent number: 4205159
    Abstract: A transparent polyamide which is the polycondensation product of bis-(4-aminocyclohexyl)-methane and a mixture of azelaic acid and at least one acid selected from group consisting of isophthalic acid and adipic acid. Up to 30 mol % of said bis-(4-aminocyclohexyl)-methane may also be replaced with hexamethylene diamine or another C.sub.8 -C.sub.15 cycloaliphatic diamine. Said transparent polyamide is useful for the production of sheets, films, plates, tubes, rods and containers of various types by extruding or molding.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: May 27, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf-Volker Meyer, Rolf Dhein, Friedrich Fahnler
  • Activated anionic polymerization of lactams with liquid isocyanatoallophanate activator
    Patent number: 4195163
    Abstract: Processes for the production of polyamides by polymerizing lactams in the presence of a catalyst and anisocyanatoallophanate as activator.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: March 25, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf-Volker Meyer, Rolf Dhein, Friedrich Fahnler
  • Transparent polyamides
    Patent number: 4195164
    Abstract: Transparent copolyamides obtained by polycondensation of mixtures of positional isomeric diaminodicyclohexyl methanes and optionally further diamines and azelaic acid and optionally isophthalic and/or adipic acid. The copolyamides are valuable moulding compounds for the manufacture of various products such as sheets, films, plates, tubes, rods and containers.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: March 25, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf-Volker Meyer, Rolf Dhein, Friedrich Fahnler
  • Activated anionic polymerization of lactam with partially masked polyisocyanate
    Patent number: 4191819
    Abstract: A process for the activated anionic polymerization of lactams wherein as activator a fluid partially masked aliphatic araliphatic or cycloaliphatic polyisocyanate being masked with 0.5-0.7 equivalents of lactam per equivalent of NCO groups is used.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: March 4, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf-Volker Meyer, Rolf Dhein, Kurt Schneider, Friedrich Fahnler
  • Process for the production of high-impact thermoplastic moulding compositions
    Patent number: 4100223
    Abstract: A moulding composition consisting of:From 60 to 93 parts, by weight, of a polyamide;From 6 to 30 parts, by weight, of a polyethylene; andFrom 1 to 20 parts, by weight, of a copolymer of an aromatic vinyl compound, an .alpha., .beta.-unsaturated mono- and/or di-carboxylic acid or an anhydride thereof, free acid groups optionally being neutralized by a mono- and/or poly-amine or with ammonia, and an ester of the said mono- and or di-carboxylic acid.
    Type: Grant
    Filed: March 15, 1977
    Date of Patent: July 11, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf-Volker Meyer, Rolf Dhein