US PATENT SUBCLASS 568 / 871
.~.~.~.~.~.~ Of spent ethylene glycol from polyester production

Current as of: June, 1999
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568 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
700  DF  .~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10}
840  DF  .~.~.~ Acyclic {16}
852  DF  .~.~.~.~ Polyhydroxy {9}
868  DF  .~.~.~.~.~ Purification or recovery {3}
871.~.~.~.~.~.~ Of spent ethylene glycol from polyester production

DEFINITION

Classification: 568/871

Of spent ethylene glycol from polyester production:

(under subclass 868) Processes wherein the compound is separated from the excess or spent ethylene glycol used in the preparation of polyester.