Solvay Specialty Polymers Italy S.p.a.

Manuel Gregori

Stefano Millefanti

Giuseppe Marchionni

Vito Tortelli

Joel Pollino

Emanuela Antenucci

Stefania Albonetti

Letanzio Bragante

Giuseppe Fornasari

Debaki Ghosh

Rahul Shingte

The invention pertains to a multi-step process for making polyfunctional aromatic compounds comprising two phenyl rings bearing reactive groups susceptible of polycondensation reaction to provide polycondensed polymers, said method using economic raw materials, and possessing high selectivity and overall yield.

Method of making perfluorocyclobutane-containing monomer

The invention pertains to a process for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HFE) having general formula (I-A) or (I-B):RfO&#x2014;CRf'X&#x2014;CRf&#x2033;Rf&#x2032;&#x2033;X&#x2033;&#x2003;&#x2003;(I-A)wherein Rf represents a C1-C6 perfluoro(oxy)alkyl group; Rf&#x2032;, Rf&#x2033; and Rf&#x2032;&#x2033;, equal or different from each other, independently represent fluorine atoms or C1-C5 perfluoro(oxy)alkyl groups; X and X&#x2032;, equal or different from each other, are independently chosen among Cl, Br or I; wherein Rf* and Rf*&#x2032;, equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoro(oxy)alkyl groups; Y1 and Y2, equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoroalkyl groups; X and X&#x2032; are as above defined;said process comprising contacting said halofluoroether (HFE) with hydrogen in the presence of a catalyst comprising palladium and at least one transition metal (M) selected from the group consisting of the metals of group VIIIB, other than palladium, and of group IB.

Method for manufacturing perfluorovinylethers

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Meldola, Italy

Manuel Gregori