Solvay Specialty Polymers Italy S.p.a.

Solvay Solexis, Inc.

Cable Components Group, LLC

Ausimont USA, Inc.

Bradley Lane Kent

Giulio Brinati

Valeriy Kapelyushko

Shiow-Ching Lin

Charles A Glew

Jeffrey A Hrivnak

Kenneth R Boyle

Michelle Kelly

Alessio Marrani

Serena Carella

Milena Stanga

Fiorenza D'Aprile

Fabrizio Spada

Mario Visca

Giambattista Besana

Riccardo Pieri

Giovanni Comino

Liubov Chernysheva

Stefana Musio

Alessandro Veneroni

Anna Maria Bertasa

Laura Ponta

Philip Schild

Craig Norman Kamsler

Steven John Burks

Suneel Bandi

Michelle S Kelly

Kun Li

Edwin Figueroa

Charles A Cable Components Group Llc Glew

The present invention relates to a process for preparing a fluoropolymer in a liquid reaction medium, comprising the following steps:

Method for manufacturing fluoropolymers

The present invention relates to a fluorosurfactant-free emulsion polymerization method for the synthesis of a fluoropolymer, more in particular of a VDF-based polymer.

Method for the synthesis of fluoropolymers

The invention pertains to a fluoropolymer composition comprising: &#x2014;at least one polymer comprising recurring units derived from ethylene (E) and from chlorotrifluoroethylene (CTFE) [ECTFE polymer]; &#x2014;at least one water-soluble polyelectrolyte [polyelectrolyte (E)]; and&#x2014;at least one antioxidant compound [compound (P)], said composition having improved thermal resistance.

Fluoropolymer composition

A process for manufacturing a dispersion of a vinylidene fluoride (VDF) thermoplastic polymer [polymer (F)], said process includes polymerizing VDF in an aqueous phase that includes: at least one surfactant selected from the group consisting of non-fluorinated surfactants [surfactant (HS)] and fluorinated surfactants having a molecular weight of less than 400 [surfactant (FS)]; and at least one functional (per)fluoropolyether (functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain (R')] and at least one functional group, said functional PFPE having a number average molecular weight of at least 1000 and a solubility in water of less than 1% by weight at 25&#xb0; C., wherein said functional PFPE is present in the aqueous phase in an amount of 0.001 to 0.3 g/l.

Process for manufacturing a dispersion of a vinylidene fluoride polymer

The present invention pertains to an aqueous composition comprising: (A) an aqueous latex comprising at least one vinylidene fluoride (VDF) polymer [polymer (F)] comprising recurring units derived from vinylidene fluoride (VDF) and at least one (meth)acrylic monomer (MA) having formula (I) here below: wherein: &#x2014;R, Rand R, equal to or different from each other, are independently selected from a hydrogen atom and a C-Chydrocarbon group, and &#x2014;Ris a hydrogen atom or a C-Chydrocarbon moiety comprising at least one hydroxyl group, (B) at least one powdery electrode material, and (C) optionally, less than 10% by weight, based on the total weight of the aqueous composition, of at least one organic solvent (S), wherein the polymer (F) in the aqueous latex is under the form of primary particles having an average primary particle size of less than 1 &#x3bc;m, as measured according to ISO 13321. The present invention also pertains to a process for manufacturing an electrode using said aqueous composition, to an electrode comprising a metal substrate coated on at least one surface with said aqueous composition and to use of said electrode for manufacturing a non-aqueous-type electrochemical device. 

Aqueous vinylidene fluoride-(meth)acrylic co-polymer latex, electrode and lithium ion secondary battery using the same

The invention pertains to a process for manufacturing a fluoroelastomer [fluoroelastomer (A)] having a heat of fusion of less than 5 J/g as measured by ASTM D-3418-08, said method comprising emulsion polymerizing vinylidene fluoride (VDF) in the presence of at least one additional fluorinated monomer, in an aqueous polymerization medium, said method comprising polymerizing VDF and said additional fluorinated monomer(s) in the presence of a redox radical initiator system comprising: &#x2014;at least one organic oxidizing agent [agent (O)]; &#x2014;at least one organic reducing agent [agent (R)]; wherein agent (O) is fed to said polymerization medium separately from agent (R), so that agent (O) comes in contact with agent (R) exclusively in said polymerization medium comprising VDF and optional additional monomer(s), to fluoroelastomers having low amount of chain defects and low amount of polar end groups, notably obtainable from said process, and to curable compositions therefrom.

Method for manufacturing fluoroelastomers

A process for manufacturing a dispersions of a vinylidene fluoride (VDF) thermoplastic polymer [polymer (F)], said process comprising polymerizing VDF in an aqueous phase comprising:

A process for manufacturing a dispersion of a vinylidene fluoride (VDF) thermoplastic polymer [polymer (F)], said process comprising polymerizing VDF in an aqueous phase comprising from 0.5 to 1.5 g/l of at least one surfactant of formula F&#x2014;(CFCF)&#x2014;CHCH&#x2014;SOX, wherein Xis H, a alkali metal or a NRgroup, with Rbeing H or a C-Chydrocarbon group [surfactant (T)] and an organic oxidizing agent [agent (O)] as polymerization initiator.

Method for polymerizng vinylidene fluoride

The present invention pertains to a fluoropolymer [polymer (F)] comprising: wherein: The invention also pertains to a process for the manufacture of said polymer (F) and to use of said polymer (F) as binders for the manufacture of electrodes or for the manufacture of membranes.

Vinylidene fluoride copolymers

The present invention relates generally to a method for manufacturing a foamed article, which comprises providing a composition comprising a melt-processable perfluoropolymer and talc, said perfluoropolymer comprising at least 50 percent by weight of said composition and said talc comprising about 2 percent to 3 percent by weight of said composition; wherein said melt-processable perfluoropolymer is selected from the group consisting of tetrafluoroethylent/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP), and perfluroralkoxy (PFA) and any blend thereof. The composition is heated to a processing temperature of at least 600&#xb0; F. at which talc functions as a foaming agent, thereby causing the foaming of said composition at a foaming rate in a range from 20% to 50% so as to form a foamed article. The talc is the only foaming agent in said composition and the foaming is achieved without gas injection. Further, hydrogen-containing fluoropolymers are absent from the composition.

Compositions for compounding, extrusion and melt processing of foamable and cellular fluoropolymers

The present invention relates generally to the use of talc as a chemical foaming agent in perfluoropolymers to form foamable and foamed compositions. For example, in one aspect, a foamable composition is disclosed, which comprises (i) one or more base perfluoropolymers comprising at least 50 percent by weight of the composition, and (ii) talc blended with the one or more base perfluoropolymers, where the talc comprises 3 percent to about 15 percent by weight of the composition. Each of the perfluoropolymers is selected from the group consisting of tetrafluoroethylene/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP) and perfluoroalkoxy (PFA) and any blend thereof, where hydrogen-containing fluoropolymers are absent from the composition. The one or more base perfluoropolymers are melt-processable at one or more elevated processing temperatures of at least about 600&#xb0; F. at which the talc functions as a chemical foaming agent for extrusion or mold processing of the composition into a foamed article having uniform cell structures.

Use for the preparation of paints for substrata coatings of aqueous dispersions of VDF-based polymers having an average particle size between 0.260 and 0.3 micrometers comprising a bifunctional surfactant of formula:A-R-B &#x2003;&#x2003;(I)wherein A=&#x2014;O&#x2014;CFX&#x2014;COOM; B=&#x2014;CFX&#x2014;COOM with X=F, CF; M=NH, alkaline metal, H; Ris a linear or branched perfluoroalkyl chain, or a (per)fluoropolyether chain such that the number average molecular weight of (I) is in the range 600-800.

Use of aqueous dispersions of VDF-based polymers in the preparation of paints for coatings of architectural substrata

A process for making pigmented PVDF-based powder coatings by coagulation and powder based coatings made by the process. The process involves blending a PVDF latex and a water reducible acrylic polymer and pigment dispersion, adding coagulant to precipitate solid PVDF and pigment associated by ionic interaction with acrylic polymer binder, separating solids and drying the precipitate. Also, methods for coating substrates with the powder coating and coated substrates.

Growing community of inventors

Woolwich Township, NJ, United States of America

Bradley Lane Kent