Dynamit Nobel Aktiengesellschaft

Gregor Weisgerber

Werner Trautvetter

A composition comprising a polyvinylidene fluoride and a fluoroelastomer, especially a fluoroelastomer containing moieties of vinylidene fluoride and hexa- or pentafluoropropylene, and methods for the preparation of formed articles from such composition and formed articles thereof having improved notch impact toughness and elongation at rupture.

Polyvinylidene fluoride compositions, and fabricated products thereof

An improvement in a process for the preparation of thermoplastically workable fluoro-polyolefins and their copolymers wherein a fluorine containing olefin is polymerized or copolymerized in the aqueous phase in the presence of a water-soluble, radical-forming catalyst and a polymerization regulator, the improvement residing in employing as the polymerization regulator a halogenated hydrocarbon having from one to three carbon atoms and at least three halogen atoms of which at least one is a fluorine atom and at least one is a bromine or iodine atom.

Process for the preparation of thermoplastically workable fluoro-olefin

A process for coagulating a fluoro-elastomer in an aqueous medium which comprises adding to an aqueous acidic medium thereof an organic base or salt thereof which acts as a vulcanization accelerator.

Method of coagulating a fluoro-elastomer from an aqueous  dispersion

An improvement in a process for the preparation of thermoplastically workable fluoro-polyolefins and their copolymers wherein a fluorine containing olefin is polymerized or copolymerized in the aqueous phase in the presence of a water-soluble, radical-forming catalyst and a polymerization regulator, the improvement residing in employing as the polymerization regulator a halogenated hydrocarbon having from 1 to 3 carbon atoms and at least three halogen atoms of which at least one is a fluorine atom and at least 1 is a bromine or iodine atom.

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Munich, Georgia

Gregor Weisgerber