Patents Represented by Attorney, Agent or Law Firm John A. Burtis
  • Melt-processable electroconductive fluoroplastic
    Patent number: 5552199
    Abstract: This invention provides a melt-processable conductive fluoroplastic composition comprising a melt-processable, thermoplastic fluoropolymer component of interpolymerized units comprising those derived from vinylidene fluoride, a conductive particulate component comprising conductive carbon black particles, and a hydrocarbon polymer component. The composition is useful for making, for example by melt-processing, conductive shaped articles including tubing.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: September 3, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Thomas J. Blong, Claude Lavall ee
  • Melt-processable fluoroplastic
    Patent number: 5549948
    Abstract: This invention provides a melt-processable fluoroplastic composition comprising a blend of a melt-processable thermoplastic fluoropolymer component of interpolymerized units derived from vinylidene fluoride and an ethylenically-unsaturated, copolymerizable, fluorinated comonomer, and a hydrocarbon polymer component comprising a poller of ethylene or propylene. The composition is useful for making shaped articles including tubing or film.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: August 27, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Thomas J. Blong, Claude Lavall ee
  • Surfactants to create fluoropolymer dispersions in fluorinated liquids
    Patent number: 5532310
    Abstract: This invention provides a fluoropolymer dispersion useful for coating applications. The dispersion is a homogeneous and non-ozone depleting dispersion comprising a lubricious fluoropolymer, an inert perfluorinated liquid, a polar solvent, and an effective amount of a surface active agent selected from the group consisting of:a. perfluoroaliphatic amidoalkanols;b. polymerized products formed from the reaction of a mixture comprising a hydrophilic monomer and a monomer of the general formula: ##STR1## wherein p and q are integers between 1 and 4 inclusive, x and y are integers between 0 and 4 inclusive, m is 1 or 2, n is an integer between 3 and 10 inclusive, X' is either a methyl group or a single hydrogen atom, g is 0 or 1, and Q is a sulfonamido constituent group according to the formula: ##STR2## wherein R.sup.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: July 2, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark W. Grenfell, Richard M. Flynn, Patricia M. Savu
  • Melt-processable fluoroplastic
    Patent number: 5527858
    Abstract: This invention provides a melt-processable fluoroplastic composition comprising a blend of a melt-processable thermoplastic fluoropolymer component of interpolymerized units derived from vinylidene fluoride and at least one ethylenically-unsaturated, copolymerizable, fluorinated comonomer, and a hydrocarbon polymer component comprising poly(oxyalkylene). The composition is useful for making shaped articles including tubing or film.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: June 18, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Thomas J. Blong, Claude Lavallee