Slow-crystallizing polyester resins

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 3/08 (2006.01) C08G 63/183 (2006.01) C08G 63/20 (2006.01) C08G 63/672 (2006.01) C08K 3/00 (2006.01) C08K 3/02 (2006.01) C08K 3/04 (2006.01) C08K 3/22 (2006.01)

Patent

CA 2526992

The present invention relates to slow-crystallizing polyethylene terephthalate resins that possess a significantly higher heating crystallization exotherm peak temperature (TCH) as compared with those of conventional antimony-catalyzed polyethylene terephthalate resins. The polyethylene terephthalate resins of the present invention are especially useful for making hot-fill bottles having exceptional clarity.

La présente invention concerne des résines de téréphtalate de polyéthylène à cristallisation lente possédant une température (T<SB>CH</SB>) maximale exothermique de chaleur de cristallisation sensiblement plus élevée que celle des résines de téréphtalate de polyéthylène conventionnelles à catalyse par l'antimoine. Ces résines de téréphtalate de polyéthylène de la présente invention sont tout particulièrement utiles pour la fabrication de bouteilles remplies à chaud d'une pureté exceptionnelle.

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