US PATENT SUBCLASS 521 / 41
.~.~.~ Treating rubber (or rubberlike materials) or polymer derived from a monomer having at least two ethylenic unsaturated moieties

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}
40.5  DF  .~.~ Process of treating scrap or waste product containing at least one polymer derived from ethylenic unsaturated monomers only {3}
41.~.~.~ Treating rubber (or rubberlike materials) or polymer derived from a monomer having at least two ethylenic unsaturated moieties {6}
41.5  DF  .~.~.~.~> Treating with organic phosphorus-containing material
42  DF  .~.~.~.~> Treating with organic nitrogen-containing material
42.5  DF  .~.~.~.~> Treating with organic chalcogen-containing material {3}
44.5  DF  .~.~.~.~> Treating with hydrocarbon or halogenated hydrocarbon material
45  DF  .~.~.~.~> Treating with steam or water
45.5  DF  .~.~.~.~> Treating with mechanical action and in the absence of a chemically reactive additive or solvent

DEFINITION

Classification: 521/41

Treating rubber (or rubberlike materials)or polymer derived from a monomer having at least two ethylenic unsaturated moieties:

(under subclass 40.5) Subject matter wherein the scrap or waste product either contains rubber (or rubberlike materials) or is derived for a monomer having at least two points of ethylenic unsaturation.

(1) Note. Included herein are processes of treating a polymeric scrap or waste product which is a mixture of two synthetic resins (e.g., polyacrylo-nitrile or poly (methyl) methacrylate) and a polymer derived for a monomer having at least two points of ethylenic unsaturation, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

40.5, for a process of treating a polymeric scrap or waste product, said polymeric scrap or waste product being derived solely from a monoolefinic unit which is not provided for below (e.g., polyacrylonitrile, poly (methyl) methacrylate, etc.).