US PATENT SUBCLASS 521 / 49.8
.~.~ Treating polycarbonamide

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}
49.8.~.~ Treating polycarbonamide

DEFINITION

Classification: 521/49.8

Treating polycarbonamide:

(under subclass 40) Subject matter wherein the scrap or waste product contains a polycarbonamide.

(1) Note. A polycarbonamide is defined to be a polymer containing either at least two or more N- units, e.g., nylon 6, nylon 6-6 or a polyimide unit, N, and is generally derived either from an amino carboxylic acid or derivative; a diamine and a dicarboxylic acid; or a dicarboxylic acid derivative, a diacid halide, and a diamine; or is derived from the condensation of lactams.

(2) Note. A mere disclosure of a polycarbonamide in which the method of making said polycarbonamide is not claimed or disclosed is presumed to lie within the definition of this subclass.