Process for continuously producing polyester articles with scrap

Details Process for continuously producing polyester articles with scrap Process for continuously producing polyester articles with scrap

1997-10-24

1999-08-31

Seidleck, James J.

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

Synthetic resins

Process of treating scrap or waste product containing solid...

521 485, 528272, C08J 1104, C08L 6702

Patent

active

059454601

ABSTRACT:
A process for producing polyester articles, which generates little or no polyester waste. The process provides esterification or transesterification of one or more dicarboxylic acids or their dialkyl esters, polycondensation to produce a high molecular weight polyester, and molding or shaping of the polyester for produce the desired product. Scrap produced during the molding process is recycled back to the esterification or transesterification or polycondensation portion of the process. Optionally, the scrap may also be recycled to intermediate steps prior to the molding operation.

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