Arkema Inc.

Atofina Chemicals, Inc.

Roice Andrus Wille

Mehdi Durali

Lotfi Hedhli

Ramin Amin-Sanayei

Gregory Scott O'Brien

Kurt Arthur Wood

Sayed Youssef Antoun

Scott R Gaboury

Michael Timothy Burchill

John Schmidhauser

Walter Phillip Kosar

Roderick Reber, Iii

Gregory S O'BRIEN

The invention relates to an aqueous fluoropolymer hybrid composition having superior weathering resistance while maintaining excellent mechanical properties in coatings, paints, caulks and adhesives. The composition is comprised of: a) a vinylidene fluoride polymer, such as KYNAR® polymers from Arkema, b) a first vinyl polymer immiscible with the vinylidene fluoride polymer and having a Tg of less than 0° C., and c) a second vinyl polymer of a different composition, also having a Tg of less than 0° C., and containing groups capable of crosslinking. The invention also relates to waterborne coatings or paints containing the aqueous fluoropolymer hybrid composition, and an article, object, or structure coated with the fluoropolymer hybrid composition on at least one surface, either in a factory or in the field, to confer protection and decorative properties. Free films made from the waterborne compositions of the invention have a dynamic mechanical analysis loss tangent, tan (δ), of greater than 0.22 at a temperature of 0° C.

Fluoropolymer compositions with improved mechanical dampening

The invention relates to an aqueous fluoropolymer hybrid composition having superior weathering resistance while maintaining excellent mechanical properties in coatings, paints, caulks and adhesives. The composition is comprised of: a) a vinylidene fluoride polymer, such as KYNAR&#xae; polymers from Arkema, b) a first vinyl polymer immiscible with the vinylidene fluoride polymer and having a Tg of less than 0&#xb0; C., and c) a second vinyl polymer of a different composition, also having a Tg of less than 0&#xb0; C., and containing groups capable of crosslinking. The invention also relates to waterborne coatings or paints containing the aqueous fluoropolymer hybrid composition, and an article, object, or structure coated with the fluoropolymer hybrid composition on at least one surface, either in a factory or in the field, to confer protection and decorative properties. Free films made from the waterborne compositions of the invention have a dynamic mechanical analysis loss tangent, tan (&#x3b4;), of greater than 0.22 at a temperature of 0&#xb0; C.

Hollow fiber membranes having improved toughness and durability are prepared using a vinylidene fluoride polymer-containing component, such as Kynaro resins, having relatively low crystallinity. One aspect of the invention provides a membrane in the form of a fiber, wherein i) the fiber has a porous wall of a polymeric component enclosing a central hollow space extending the length of the fiber, ii) the polymeric component has a crystallinity as determined by wide angle x-ray diffraction of less than about 35%, iii) the polymeric component is comprised of at least one homopolymer or copolymer of vinylidene fluoride and iv) the membrane has an energy to break of at least about 0.5 J per square mm of membrane cross section.

High toughness hollow fiber membranes based on vinylidene fluoride polymers

The invention relates to methods of polymerizing fluoromonomers using non-fluorinated surfactants, in particular to emulsion polymerization method for producing fluoropolymer latex. Specifically, the method of polymerization uses one or more alkyl sulfate surfactants.

Method of producing fluoropolymers using alkyl sulfate surfactants

The present invention relates to a method for the polymerization of fluoromonomers using non-fluorinated alkyl phosphonate surfactants, and to the fluoropolymers formed thereby. Specifically, the method of the polymerization uses one or more alkyl phosphonic acids or salts thereof.

Polymerization of fluoropolymers using alkyl phosphonate surfactants

This invention relates to a heterogeneous copolymer composition of polyvinylidene fluoride with one or more perfluoroalkyl ethers. These copolymers have excellent low temperature impact properties, while maintaining a high melting point.

Vinylidene fluoride copolymer composition with improved low-temperature impact properties

Nonfluorinated surfactants selected from C7&#x2013;C20 linear 1-alkanesulfonates, 2-alkanesulfones, and 1,2-alkanedisulfones are particularly effective for stabilizing emulsions in preparing non-elastomeric fluoropolymers containing at least 71 wt % vinylidene fluoride and having at least a 2% crystalline polyvinylidene fluoride content. Processes for making such fluoropolymers using these surfactants, particularly in combination with one or both of a nonionic polymerization initiator and the use of mechanical coagulation to isolate the product, are also provided, as are fluoropolymers made thereby.

Method of producing thermoplastic fluoropolymers using alkyl sulfonate surfactants

Fluoropolymers are prepared by a process comprising polymerizing at least one fluoromonomer in an aqueous reaction medium containing monomer, a radical initiator and a 3-allyloxy-2-hydroxy-1-propanesulfonic acid salt as surfactant. The medium may optionally contain one or more of an antifoulant, a buffering agent and a chain-transfer agent.

Polymerization of fluoromonomers using a 3-allyloxy-2-hydroxy-1-propanesulfonic acid salt as surfactant

Halogenated polymers are prepared by a process comprising polymerizing at least one halogen-containing monomer in an aqueous medium containing monomer, radical initiator, and siloxane surfactant. The medium may optionally contain one or more of an antifoulant, a buffering agent and a chain-transfer agent.

Polymerization of halogen-containing monomers using siloxane surfactant

New and novel copolymers of vinylidene fluoride and hexafluoropropylene containing up to 24% by weight hexafluoropropylene having lower DSC melting temperatures at 8 weight percent or greater nominal HFP content, and having improved solution clarity and fluidity, longer gel times and lower extractables than prior art vinylidene fluoride-hexafluoropropylene copolymers of comparable HFP content whose syntheses are disclosed in sufficient detail to duplicate, to novel compositions of matter and articles of manufacture containing such copolymers, processes for the preparation and use of the copolymers, of the compositions of matter containing such copolymers and of the articles of manufacture containing such copolymers are disclosed. Improved electrochemical cells based on the new and novel copolymers are particularly disclosed.

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Malvern, PA, United States of America

Roice Andrus Wille