Polyvinylidenefluoride having high mechanical properties and...

Details Polyvinylidenefluoride having high mechanical properties and... Polyvinylidenefluoride having high mechanical properties and...

C - Chemistry, Metallurgy

08

F

C08F 114/22 (2006.01) C08F 2/38 (2006.01)

Patent

CA 2124549

ABSTRACT "POLYVINYLIDENEFLUORIDE HAVING HIGH MECHANICAL PROPERTIES AND HIGH THERMOCHEMICAL STABILITY AND THE PREPARATION PROCESS THEREOF" A polyvinylidenefluoride (PVDF) having high mechanical properties both at room temperature and at high temperatures, having very good processability and high thermochemical re- sistance to dehydrofluorination, is prepared by means of a polymerization process of vinylidenefluoride in aqueous emulsion at a temperature comprised between 95° and 120°C, in the presence of a chain transfer agent. In this way it is possible to obtain, using non-hazardous peroxidic initiators (for instance diterbutylperoxide), a PVDF particularly suitable for applications where high mechanical and thermochemical resistance properties are required, such as for instance the manufacture of articles for chemical industry (pipes, valves, fittings, tanks, heat exchangers, membranes, flanges, etc.).

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