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published February 2, 2004
posted in Oxyfluorides, Papers - 2004
author

New perfluorovinylethers through the bis(fluoroxy)difluoromethane (BDM) chemistry

 

Author(s): Navarrini, W; Corti, S.

Source: JOURNAL OF FLUORINE CHEMISTRY

Volume: 125 Issue: 2 Pages: 189-197

DOI: 10.1016/j.jfluchem.2003.07.011 Published: FEB 2 2004

ABSTRACT:

In the present work we give an overview of the CF2(OF)(2) radical reactivity and report the synthesis of new perfluorovinylethers. CF2=CF-OCF2OCF2CF3 and CF2=CF-OCF2OCF2CF2OCF3 are prepared in a semi-continuous methodology starting from CF2(OF)(2). These highly reactive vinylethers are characterized by the OCF2O group directly bonded to the insaturation. For this reason they are excellent candidates for the preparation of very low T-g perfluororubbers.

http://www.sciencedirect.com/science/article/pii/S0022113903002732

published January 1, 2004
posted in Papers - 2004
author

Perfluoro-4-methyl-1,3-dioxole: a new monomer for high-T-g amorphous fluoropolymers

 

Author(s): Russo, A; Navarrini, W.

Source: JOURNAL OF FLUORINE CHEMISTRY

Volume: 125 Issue: 1 Pages: 73-78

DOI: 10.1016/j.jfluchem.2003.10.009 Published: JAN 1 2004

ABSTRACT:

A 4-Chloro-5-trifluoromethyl-2,2,4-trifluoro-1,3-dioxolane (1) was synthesised by reaction of CF2(OF)(2) with CF3-CH=CFCl; the elimination of HCl from (1) in basic conditions led to the formation of dioxole perfluoro-4-methyl-1,3-dioxole (2). Both these synthetic steps gave the corresponding product in high yield. A new synthetic route for the preparation of CF3-CH=CFCl, starting from CF2ClBr and CH2=CF2, together with some examples of polymerisation products obtained by reaction of dioxole (2) with fluoroolefins are also reported.

http://www.sciencedirect.com/science/article/pii/S0022113903003099