US PATENT SUBCLASS 521 / 77
.~.~ Preparing a cellular product by decomposition of a solid polymer; or process of forming a composition containing a solid polymer which decomposes so as to subsequently form a cellular polymer, or composition therefrom

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}
50  DF  .~ CELLULAR PRODUCTS OR PROCESSES OF PREPARING A CELLULAR PRODUCT, E.G., FOAMS, PORES, CHANNELS, ETC. {27}
77.~.~ Preparing a cellular product by decomposition of a solid polymer; or process of forming a composition containing a solid polymer which decomposes so as to subsequently form a cellular polymer, or composition therefrom

DEFINITION

Classification: 521/77

Preparing a cellular product by decomposition of a solid polymer; or process of forming a composition containing a solid polymer which decomposes so as to subsequently form a cellular polymer, or composition therefrom:

(under subclass 50) Subject matter wherein cell formation is achieved or initiated by decomposing in whole or part a solid synthetic polymer so as to form cells in an additional polymer or to form cells in the polymer undergoing decomposition.

(1) Note. This subclass provides (1) for processes of forming cellular products in the presence of a decomposing solid polymer; (2) for compositions which are capable of forming a cellular product which composition contains a solid polymer capable of decomposition; or (3) for processes of preparing a cellular forming composition containing a decomposable solid polymer.

(2) Note. This subclass includes a single solid polymer which decomposes so to form materials which will form cells in the decomposition product and is still a solid polymer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

134, for a cellular product which is the result of decomposing a solid polymer in the presence of a different solid polymer and wherein the decomposed polymer is still a solid polymer.