C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 67/02 (2006.01) C08G 63/183 (2006.01) C08G 63/84 (2006.01) C08K 3/10 (2006.01) C08K 5/13 (2006.01)
Patent
CA 2711883
Articles comprising at least one polyester polymer melt phase product comprising at least one polyethylene terephthalate polyester; at least one metal compound chosen from alkali metal- aluminum compounds; and from 5 ppm to 1000 ppm of at least one phenolic stabilizer. Also provided is a melt phase process for making a polyester polymer melt phase product comprising: forming a slurry comprising at least one glycol chosen from ethylene glycol and derivatives of ethylene glycol and at least one acid chosen from terephthalic acid and derivatives of terephthalic acid; adding 5 ppm to 1000 ppm of at least one phenolic stabilizer; and reacting said at least one glycol and said at least one acid in the presence of at least one catalyst chosen from alkali metal- aluminum catalysts.
L'invention concerne des articles comprenant au moins un produit en phase fondue de polymère de type polyester contenant au moins un polyester de type polytéréphtalate d'éthylène; au moins un composé de métal choisi parmi des composés de métal alcalin-aluminium; et de 5 ppm à 1000 ppm d'au moins un stabilisant phénolique. L'invention concerne également un procédé en phase fondue permettant de fabriquer un produit en phase fondue de polymère de type polyester et consistant à : former une suspension épaisse comprenant au moins un glycol choisi parmi l'éthylène glycol et les dérivés de l'éthylène glycol et au moins un acide choisi parmi l'acide téréphtalique et les dérivés de l'acide téréphtalique; ajouter 5 ppm à 1000 ppm d'au moins un stabilisant phénolique; et faire réagir ledit ou lesdits glycols et ledit ou lesdits acides en présence d'au moins un catalyseur choisi parmi les catalyseurs de métal alcalin-aluminium.
Jenkins Jason Christopher
Pearcy Barry Glen
Quillen Donna Rice
Weinhold Stephen
White Alan Wayne
Eastman Chemical Company
Gowling Lafleur Henderson Llp
Grupo Petrotemex S.a. de C.v.
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