Process for crystallizing polyethylene naphthalate

Details Process for crystallizing polyethylene naphthalate Process for crystallizing polyethylene naphthalate

1995-08-31

1996-06-04

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528272, 528298, 528308, 5283086, 525437, 525486, 525503, C08F 2000

Patent

active

055233619

ABSTRACT:
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.

REFERENCES:
patent: 2863854 (1958-12-01), Wilson
patent: 4171422 (1979-10-01), Lazarus et al.
patent: 4348314 (1982-09-01), Lazarus et al.
patent: 4374961 (1983-02-01), Kudo et al.
patent: 4963644 (1990-10-01), Duh
patent: 4996269 (1991-02-01), Richeson et al.
patent: 5290913 (1994-03-01), McAllister et al.
Huntsman brochure, "JEFFSOL.RTM. Ethylene and Propylene Carbonates," p. 6.

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