Perfluoroelastomers

• Main Authors: APOSTOLO, MARCO, ARRIGONI, STEFANO
• Format: Patent
• Language: English; French; German
• Published: 26.10.2005
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

Perfluoroelastomers, curable by peroxidic route, obtainable by polymerizing the following monomers: a) tetrafluoroethylene (TFE); b) fluorovinylethers of general formula: CFX=CXOCF2OR c) bis-olefins having general formula: R 1R 2 C=CR 3-Z-CR 4=CR 5R 6 d) optionally, one or more fluorinated olefinic comonomers selected from C2-C8 perfluoroolefins, perfluoroalkylvinylethers (PAVE) CF2=CFOR f, perfluoro-oxyalkylvinylethers CF2=CFOX, said perfluoroelastomers comprising iodine and/or bromine atoms in the chain and/or in end position, said halogen atoms deriving from "cure site" comonomers and/or from chain transfer agents used in polymerization.