The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 01, 2006
Filed:
May. 10, 2001
Anca Dumitrescu, Toulouse, FR;
Heinz Gornitzka, Pompertuzat, FR;
Blanca Martin-vaca, Toulouse, FR;
Didier Bourissou, Plaisance du Touch, FR;
Guy Bertrand, Riverside, CA (US);
Jean-bernard Cazaux, Aramon, FR;
Anca Dumitrescu, Toulouse, FR;
Heinz Gornitzka, Pompertuzat, FR;
Blanca Martin-Vaca, Toulouse, FR;
Didier Bourissou, Plaisance du Touch, FR;
Guy Bertrand, Riverside, CA (US);
Jean-Bernard Cazaux, Aramon, FR;
Abstract
The use of stannylenes and germylenes of general formula (I) wherein: M represents a tin or geranium atom; Land Lindependently represent a group of formula: -E(R) (R') (R″), -E(R) (R′) or -E(R)) or together form a chain of formula -L′-A- L′; A represents a saturated or unsaturated chain comprising one, two or three elements of group 14; L′and L′, represent, independently, a group of formula: -E(R) (R′)-, E(R)- or -E-; Eis an element of group 14; Eis an element of group 15; Eis an element of group 16; R, R′, R″, R, R′and Rrepresent variable groups as polymerization catalysts of heterocycles.