Solvay Specialty Polymers Italy S.p.a.

Liubov Chernysheva

Marco Apostolo

Riccardo Pieri

Giovanni Comino

Giulio Brinati

Ivan Diego Wlassics

Marco Avataneo

Mattia Bassi

Serena Carella

Bradley Lane Kent

Ugo De Patto

Matteo Fantoni

Valeriy Kapelyushko

Valeri Kapeliouchko

Stefano Bossolo

Lidia Maria Baiguera

Nicola Ranieri

Davide Vicino

The invention pertains to UV-curable compositions comprising a iodine-containing (per)fluoroelastomer, and well-defined amount of certain combinations of given photoinitiators and crosslinking which are particularly effective in delivering through low temperature UV curing crosslinked parts possessing outstanding mechanical properties.

Fluoroelastomer curable composition

The present invention relates to a method for manufacturing of partially fluorinated polymers, notably vinylidene fluoride (VDF)-based polymers, in emulsion polymerization, and to a polymer obtained from said method.

Method for manufacturing partially fluorinated polymers

The invention pertains to a (per)fluoroelastomer composition comprising: &#x2014;a (per)fluoroelastomer [fluoroelastomer (A)]; and &#x2014;at least one (per)fluoropolyether additive [polymer (E)] comprising a (per)fluoropolyether chain comprising recurring units having at least one catenary ether bond and at least one fluorocarbon moiety, and comprising at least one chain end comprising at least one per(halo)fluorinated aromatic group [group (Ar)], said polymer (E) being comprised in the composition in an amount of 0.5 to 30 phr, with respect to fluoroelastomer (A).

Fluoroelastomer compositions

The invention pertains to peroxide-curable fluoroelastomers for the oil and gas industry, including explosive decompression, and which can be easily processed to yield cured parts in standard machineries at reasonable throughput rates, said fluoroelastomers comprising: recurring units derived from vinylidene fluoride (VDF); recurring units derived from hexafluoropropylene (HFP); recurring units derived from at least one bis-olefin [bis-olefin (OF)] having general formula: wherein R, R, R, R, Rand R, equal or different from each other, are H, a halogen, or a C-Coptionally halogenated group, possibly comprising one or more oxygen group; Z is a linear or branched C-Coptionally halogenated alkylene or cycloalkylene radical, optionally containing oxygen atoms, or a (per)fluoropolyoxyalkylene radical; and iodine or bromine cure-sites;said fluoroelastomers further possessing a Mooney viscosity (ML) of at least 85 MU (1+10@121&#xb0; C.), when measured according to ASTM D1646.

Fluoroelastomers

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

The invention pertains to a process for manufacturing a (per)fluoropolymer, said process comprising polymerizing one or more fluorinated monomers in the presence of a multi-phase medium, said medium comprising:

Method for manufacturing fluoropolymers

The invention pertains to a process for cryogenic milling mixtures of (per)fluoroelastomers and semicrystalline thermoplastic VDF polymers, and to free-flowing micronized pellets obtainable therefrom, said micronized pellets advantageously yielding, after extrusion and compounding, excellent mechanical properties, even improved over those of base fluoroelastomer matrix.

Milling process

A process for manufacturing a (per)fluoroelastomer having a heat of fusion of less than 5 J/g as measured by ASTM D-3418-08, comprising polymerizing at least one fluorinated monomer in the presence of at least one initiator in a polymerization medium comprising: 

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Caronno Pertusella, Italy

Liubov Chernysheva