US PATENT SUBCLASS 521 / 49.5
.~.~.~ Treating with alcohol or amine

Current as of: June, 1999
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521 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {3}
40  DF  .~ PROCESS OF TREATING SCRAP OR WASTE PRODUCT CONTAINING SOLID ORGANIC POLYMER TO RECOVER A SOLID POLYMER THEREFROM {5}
49  DF  .~.~ Treating polyurethane, polyurea (excluding urea-formaldehyde polymers), polyisocyanurate or polycarbodiimide {1}
49.5.~.~.~ Treating with alcohol or amine

DEFINITION

Classification: 521/49.5

Treating with alcohol or amine:

(under subclass 49) Subject matter wherein said polymeric scrap or waste product is treated with an alcohol or amine.

(1) Note. This subclass includes the use of an alcohol or amine as solvent.