Use of stannylenes and germylenes as polymerization catalysts for heterocycles

US7084237B2 · kind B2 · utility

Assignees

• Société de Conseils de Recherches et d'Applications Scientifiques (S.C.R.A.S) SAS · FR
• CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR

Inventors

• Anca Dumitrescu · Toulouse, FR
• Heinz Gornitzka · Pompertuzat, FR
• Blanca Martin-Vaca · Toulouse, FR
• Didier Bourissou · Plaisance-du-Touch, FR
• Guy Bertrand · Riverside, US
• Jean-Bernard Cazaux · Aramon, FR

Key dates

• Filing date: May 10, 2001
• Grant date: Aug 1, 2006
• Expiry date: Nov 4, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J31/0274
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The use of stannylenes and germylenes of general formula (I) wherein: M represents a tin or geranium 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 polymerization catalysts of heterocycles.