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1. (WO2001088014) USE OF STANNYLENES AND GERMYLENES AS POLYMERISATION CATALYSTS FOR HETEROCYCLES

Pub. No.:    WO/2001/088014    International Application No.:    PCT/FR2001/001405
Publication Date: Nov 22, 2001 International Filing Date: May 10, 2001
IPC: B01J 31/12
B01J 31/16
C08G 63/82
C08G 65/12
C08G 65/26
Applicants: SOCIETE DE CONSEILS DE RECHERCHES ET D'APPLICATIONS SCIENTIFIQUES (S.C.R.A.S.)
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.)
DUMITRESCU, Anca
GORNITZKA, Heinz
MARTIN-VACA, Blanca
BOURISSOU, Didier
BERTRAND, Guy
CAZAUX, Jean-Bernard
Inventors: DUMITRESCU, Anca
GORNITZKA, Heinz
MARTIN-VACA, Blanca
BOURISSOU, Didier
BERTRAND, Guy
CAZAUX, Jean-Bernard
Title: USE OF STANNYLENES AND GERMYLENES AS POLYMERISATION CATALYSTS FOR HETEROCYCLES
Abstract:
The invention concerns the use of stannylenes and germylenes of general formula (1) wherein: M represents a tin or germanium atom; L1 and L2 independently represent a group of formula: -E14(R14)(R'14)(R''14), -E15(R15)(R'15) or -E16(R16), or together form a chain of formula -L'1-A-L'2; A represents a saturated or unsaturated chain comprising one, two or three elements of group 14; L'1 and L'2, represent, independently, a group of formula: -E14(R14)(R'14)-, E15(R15)- or -E16-; E14 is an element of group 14; E15 is an element of group 15; E16 is an element of group 16; R14, R'14, R''14, R15, R'15 and R16 represent variable groups as polymerisation catalysts of heterocycles.