US PATENT SUBCLASS 525 / 521
.~.~ Solid polymer or SICP derived from at least one ketone reactant and at least one aldehyde or aldehyde derivative reactant

Current as of: June, 1999
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525 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
521.~.~ Solid polymer or SICP derived from at least one ketone reactant and at least one aldehyde or aldehyde derivative reactant {1}
522  DF  .~.~.~> Mixed with reactant containing more than one 1,2-epoxy group per mole or polymer derived therefrom

DEFINITION

Classification: 525/521

Solid polymer or specified intermediate condensation product

derived from at least one ketone reactant and at least one aldehyde or aldehyde derivative reactant:

(under subclass 50) Subject matter involves processes of mixing a solid polymer or specified intermediate condensation product derived from at least one ketone reactant and at least one aldehyde or aldehyde derivative or polymer thereof as reactant, with additional solid polymer, with additional specified intermediate condensation product, with specified polymer-forming ingredients or with ethylenic agent; processes of mixing solid polymer derived from at least one ketone reactant and at least one aldehyde reactant with a chemical treating agent; or processes of forming or reacting or products resulting from any of the above mixtures.

(1) Note. In this and indented subclasses a condensate of a ketone reactant and an aldehyde or aldehyde derivative reactant must be a solid polymer in order for a mixture of a ketone-aldehyde condensate and a chemical treating agent to be classified herein. A mixture would be placed in Class 528. See the Glossary and (1) note of subclass 480 of this class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

480, the Note, for furthur elucidation.

SEE OR SEARCH CLASS

528, Synthetic Resins or Natural Rubbers, the Glossary, for a mixture of a nonsolid ketone-aldehyde condensate and a chemical treating agent, such as a catalyst.