C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 63/85 (2006.01) C08G 63/183 (2006.01)
Patent
CA 2276652
This invention relates to a method for manufacturing polyesters, in particular, to using a lithium titanyl oxalate as the catalyst for such reaction to provide fast reactions with excellent color properties for the resulting polyester. The present invention provides an improved method of producing polyester by the polycondensation of polyester forming reactants wherein the improvement comprises utilizing, as the polycondensation catalyst, lithium titanyl oxalate. The improved process produces a polyester of improved color verses other titanyl oxalate catalysts and a novel polyester without the presence of antimony.
Cannon Kevin C.
Dirkx Ryan R.
Seshadri Sri R.
Atofina Chemicals Inc.
Borden Ladner Gervais Llp
Elf Atochem North America Inc.
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