Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2007-01-30
2007-01-30
Pezzuto, Helen L. (Department: 1713)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S152000, C502S167000, C502S200000, C526S126000, C526S135000, C526S172000, C526S320000
Reexamination Certificate
active
10474617
ABSTRACT:
The invention concerns the use of zinc derivatives of general formula (I) wherein: L1represents a group of formula: —E14(R14)(R′14)(R″14), —E15(R15) (R′15) or —E16(R16); E is an atom of group 15; L2and L3independently 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′2—A—L′3—; A represents a saturated or unsaturated chain comprising one, two or three elements of group 14; L′2and L′3independently represent a group of formula —E14(R14)(R′14) —E15(R15) or —E16—; E14is an element of group 14; E15is an element of group 15; E16is an element of group 16; R14, R′14, R″14, R15, R′15and R16represent various groups, as (co) polymerisation catalysts of cyclic esters
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Bertrand Guy
Blanca Martin-Vaca
Bourissou Didier
Cazaux Jean-Bernard
Dumitrescu Anca
Centre National de la Recherche Scientifique (C.N.R.S.)
Muserlian Charles A.
Pezzuto Helen L.
Societe de Conseils de Recherches et d'Applications Scientifique
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