Process for heating PET pellet feed to a solid stating...

Details Process for heating PET pellet feed to a solid stating... Process for heating PET pellet feed to a solid stating...

2007-02-20

2007-02-20

Boykin, Terressa (Department: 1711)

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

Synthetic resins

From carboxylic acid or derivative thereof

C264S009000, C264S014000, C422S131000, C528S271000

Reexamination Certificate

active

10666415

ABSTRACT:
Considerable energy savings may be realized by recovering heat from hot PET pellets exiting a solid state polymerization reactor, and using this heat to heat cool pellets entering the crystallizer or solid state polymerization reactor. The heat may be transferred from hot to cool pellets employing a heat exchanger.

REFERENCES:
patent: 4436782 (1984-03-01), Ho
patent: 5532333 (1996-07-01), Stouffer et al.
patent: 5597891 (1997-01-01), Nelson et al.
patent: 6159406 (2000-12-01), Shelby et al.
patent: 2004/0113300 (2004-06-01), Jurgens et al.
International Search Report and Written Opinion.

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