US PATENT SUBCLASS 521 / 142
.~.~ Cellular product derived from ethylenically unsaturated reactants only

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}
142.~.~ Cellular product derived from ethylenically unsaturated reactants only {5}
143  DF  .~.~.~> From acyclic mono-unsaturated hydrocarbon as only reactant {1}
145  DF  .~.~.~> From acyclic mono-unsaturated halogenated reactant
146  DF  .~.~.~> From aromatic reactant {2}
149  DF  .~.~.~> From oxygen containing reactant
150  DF  .~.~.~> From reactant containing two or more ethylenic unsaturated groups

DEFINITION

Classification: 521/142

Cellular product derived from ethylenically unsaturated reactants only:

(under subclass 50) Subject matter involving a cellular polymer-derived from only reactants which contain ethylenic unsaturation or process of preparing; composition containing a polymer derived from only reactants containing ethylenic unsaturation or from polymerizable reactants containing only ethylenic unsaturation and which composition is capable of preparing a cellular product or processes of preparing same: processes of treating a cellular polymer derived from only ethylenic reactants with a material which neither reacts with the cellular polymer to change or modify chemical bonds therein or neither forms a desired composition with the cellular polymer or products of such a treatment; processes of treating a cellular polymer derived from only ethylenic reactants without the addition of a material thereto whereby a physical or chemical change in the polymer may be effected or products which are the result of such a treatment.

(1) Note. Ethylenic unsaturation includes the acetylenic linkage (-C=C-).

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+, for a process of treating a cellular polymer with a material so as to modify or change chemical bonds in the cellular polymer or wherein a material is added to a cellular polymer to form a desired composition therewith, or for cellular products which are the result of such a treating process.