3m Innovative Properties Company

Per Miles Nelson

Klaus Hintzer

Tilman C Zipplies

Harald Kaspar

Kai Helmut Lochhaas

Malte Korten

Denis Duchesne

Jeffrey N Bartow

Emily S Goenner

Gallus Schechner

Kristin LaVelle Thunhorst

Colin McCullough

Carsten Franke

Michael C Dadalas

Herve E Deve

Bernd Gangnus

Karl D Weilandt

Jens Schrooten

David Robert Mekala

Michael F Grether

David M Wilson

Andreas M Geldmacher

Fee Zentis

Gabriele H Gottschalk-Gaudig

Sebastian F Zehentmaier

Colin Mccullough

Provided are methods for making shaped fluoropolymer by additive processing using fluoropolymer particles, polymerizable binder and extraction with supercritical fluids. Also provided are 3D printable compositions for making shaped fluoropolymer articles and articles comprising a shaped fluoropolymer.

Additive processing of fluoropolymers

Methods and apparatuses () suitable for use in 3D-printing of gels from a solution () comprising a polymerizable material dispersed in a solvent are described. Such methods and apparatuses () include features () to control the relative saturation of the solvent in a gas phase region around the gel during the 3D-printing process.

Method and apparatus for 3D-printing gels

A copolymer having tetrafluoroethylene units, hexafluoropropylene units, and units independently represented by formula in a range from 0.02 to 2 mole percent, based on the total amount of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more &#x2014;O&#x2014; groups, n is from 1 to 6, and m is 0 or 1. The copolymer has a melt flow index in a range from 25 grams per 10 minutes to 35 grams per 10 minutes and has up to 50 unstable end groups per 10carbon atoms. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed. 

Tetrafluoroethylene/hexafluoropropylene copolymers including perfluoroalkoxyalkyl pendant groups and methods of making and using the same

A copolymer having tetrafluoroethylene units, hexafluoropropylene units, and units independently represented by formula in a range from 0.02 to 2 mole percent, based on the total amount of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more &#x2014;O&#x2014; groups, z is 1 or 2, each n is independently from 1 to 6, and m is 0 or 1. The copolymer has a melt flow index in a range from 25 grams per 10 minutes to 35 grams per 10 minutes and has a combined number of unstable end groups and &#x2014;CFH end groups in a range from 25 per 10carbon atoms up to 120 per 10carbon atoms. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed. 

Tetrafluoroethylene/hexafluoropropylene copolymers including perfluoroalkoxyalkyl pendant groups

Thermoset polymer composite wires including a multiplicity of substantially continuous fibers embedded in a solidified polymer composite matrix and forming a substantially continuous filament, the solidified polymer composite matrix further including a polymer formed by curing a polymer precursor from a liquid state and a multiplicity of nanoparticles having a median diameter of one micrometer or less substantially uniformly dispersed throughout the polymer composite matrix, and optionally, a corrosion resistant sheath surrounding the substantially continuous filament. In some embodiments, the multiplicity of particles includes surface-modified particles having a core and a surface modifying agent associated with the core and reacted with the polymer cured from a liquid state. Stranded cables including one or more such thermoset polymer composite wires, and methods of making and using such thermoset polymer composite wires and stranded cables are also described.

Fiber-reinforced nanoparticle-loaded thermoset polymer composite wires and cables, and methods

Growing community of inventors

Woodbury, MN, United States of America

Per Miles Nelson