US PATENT SUBCLASS 521 / 186
.~.~ Cellular product derived from reactant which is an aldehyde or aldehyde derivative

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}
186.~.~ Cellular product derived from reactant which is an aldehyde or aldehyde derivative {1}
187  DF  .~.~.~> Nitrogen containing reactant {1}

DEFINITION

Classification: 521/186

Cellular product derived from reactant - which is an aldehyde derivative:

(under subclass 50) Subject matter involving a cellular polymer derived from at least one aldehyde or derivative as a reactant or processes of preparing; composition containing a polymer derived from an aldehyde or derivative as a reactant or involving a polymerizable aldehyde or derivative and which composition is capable of forming a cellular product or processes of preparing; processes of treating a cellular polymer derived from an aldehyde or derivative 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 without the addition of a material whereby a physical or chemical change in the polymer may be effected or products which are the result of such a treatment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53, for processes 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 operation.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, the Glossary, for a definition of the term "aldehyde".

528, Synthetic Resins or Natural Rubbers,

230, for a definition of the term "aldehyde derivative".