Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Reexamination Certificate
2005-10-11
2005-10-11
Nguyen, Cam N. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
C502S308000, C502S321000, C502S322000, C502S349000, C502S355000, C502S324000, C502S344000, C423S618000
Reexamination Certificate
active
06953768
ABSTRACT:
This invention relates to new multi-component catalyst systems for the polycondensation of polyesters. More particularly, this invention pertains to novel multi-component, germanium based catalyst systems for the polycondensation of PET (polyethylene terephthalate) used in the manufacture of bottles, fiber or film. A multi-component catalyst system for the polycondensation of a polyester comprising the element germanium and one or more catalyst enhancers selected from the group of elements consisting of aluminium, silicon, molybdenum, manganese, lithium and combinations thereof, said elements being in the form of compounds, salts, compositions, oxides or organic complexes.
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Farnaby Alan David
Martin Philip James
Wallace Andrew
Nguyen Cam N.
Synnestvedt Lechner & Woodbridge LLP
Teck Cominco Metals Ltd.
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