Process for crystallizing polyethylene naphthalate

Details Process for crystallizing polyethylene naphthalate Process for crystallizing polyethylene naphthalate

C - Chemistry, Metallurgy

08

G

C08G 63/88 (2006.01) C08G 63/80 (2006.01) C08K 5/109 (2006.01)

Patent

CA 2229085

Polyethylene naphthalate pellets coated with an alkylene carbonate such as ethylene carbonate or propylene carbonate crystallize more quickly and at lower temperature than uncoated pellets, reducing the tendency of the pellets to stick together during the crystallization process prior to solid-state polymerization.

Les granules de polyéthylène-naphtalate enrobés de carbonate d'alkylène tel que le carbonate d'éthylène ou le carbonate de propylène cristallisent plus rapidement et à une température plus faible que les granules non enrobés, ce qui réduit leur tendance à coller les uns aux autres pendant le procédé de cristallisation, avant la polymérisation en phase solide.

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