US PATENT SUBCLASS 521 / 73
.~.~ Process of preparing a cellular product of a plastisol of a solid polymer derived solely from ethylenically unsaturated monomers; forming a plastisol of a solid polymer derived solely from an ethylenically unsaturated monomer which is designed to be formed into a cellular product, or composition thereof

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}
73.~.~ Process of preparing a cellular product of a plastisol of a solid polymer derived solely from ethylenically unsaturated monomers; forming a plastisol of a solid polymer derived solely from an ethylenically unsaturated monomer which is designed to be formed into a cellular product, or composition thereof {2}
74  DF  .~.~.~> By incorporation of material in gaseous state
75  DF  .~.~.~> System contains two or more solid polymers or contains at least one solid polymer and at least one polymer-forming system

DEFINITION

Classification: 521/73

Process of preparing a cellular product of a plastisol of a solid polymer derived solely from ethylenically unsaturated monomers; forming a plastisol of a solid polymer derived solely from an ethylenically unsaturated monomer which is designed to be formed into a cellular product, or composition thereof:

(under subclass 50) Subject matter wherein a cellular product is produced from a nongelled plastisol containing a solid polymer derived solely from ethylenically unsaturated monomers.

(1) Note. This subclass provides (1) for processes of forming a cellular product from a plastisol composition; (2) for plastisol compositions which will form a cellular product; or (3) for processes of preparing a cellular forming plastisol composition.

(2) Note. A plastisol is a dispersion of solid polymeric particles in a plasticizer at ambient temperature and which dispersion gels upon heating.

(3) Note. Patent claims are placed herein when the term "plastisol" is employed in the claim or when the term "plasticize" is employed and there is evidence in the disclosure that a plastisol is intended.

SEE OR SEARCH THIS CLASS, SUBCLASS:

82+, for processes involving a stated ingredient wherein a gelled material is ground to a powder and processed.