Process for producing poly(ethylene aromatic carboxylate...

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 63/87 (2006.01) C08G 63/85 (2006.01) C08J 5/00 (2006.01) D01F 6/62 (2006.01) C08G 63/183 (2006.01)

Patent

CA 2459580

A poly(ethylene aromatic dicarboxylate ester) resin usable for the production of fibers, films and bottle-formed articles, is produced by polycondensing a diester of an aromatic dicarboxylic acid with ethylene glycol by using a catalyst including a non-reacted mixture or reaction product of a titanium compound component including at least one member selected from titanium alkoxides and reaction products of the titanium alkoxides with aromatic polyvalent carboxylic acids or anhydrides thereof, with a specific phosphorus compound, in which catalyst the contents of titanium and phosphorus elements are controlled.

L'invention se rapporte à procédé selon lequel, soit un mélange inaltéré comprenant un composé phosphoreux spécifique ainsi qu'un ingrédient composé de titane comportant un ou plusieurs alcoxydes de titane et un produit issu de la réaction entre un alcoxyde de titane et un acide polycarboxylique aromatique ou son anhydride ; soit un produit obtenu par réaction de ce mélange inaltéré, subit un processus au cours duquel sa teneur en élément titane et sa teneur en élément phosphore sont régulées, puis il est utilisé comme catalyseur pour polymériser par condensation un diester d'un acide carboxylique aromatique avec un éthylène-glycol, pour produire une résine de poly(éthylène-ester dicarboxylique aromatique). Cette dernière peut servir à produire des fibres, des films et des pièces moulées en forme de bouteille.

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