US PATENT SUBCLASS 525 / 427
.~.~.~.~.~ Mixed with aldehyde or aldehyde derivative reactant or polymer therefrom

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}
418  DF  .~.~ Solid polymer derived from at least one carboxylic acid or derivative {3}
419  DF  .~.~.~ Solid polymer derived from at least one lactam; from an amino carboxylic acid or derivative; or from a polycarboxylic acid or derivative {3}
420  DF  .~.~.~.~ Solid polymer derived from an amino carboxylic acid or derivative; from a polyamine and a polycarboxylic acid or derivative; from at least one lactam; or from a polyamine salt of a polycarboxylic acid {14}
427.~.~.~.~.~ Mixed with aldehyde or aldehyde derivative reactant or polymer therefrom {2}
428  DF  .~.~.~.~.~.~> Contains amine-, N-C(=X)-, or N-S(=O)- containing reactant or polymer thereof (X is chalcogen)
429  DF  .~.~.~.~.~.~> Contains phenolic reactant or polymer thereof

DEFINITION

Classification: 525/427

Mixed with aldehyde or aldehyde derivative reactant or polymer therefrom:

(under subclass 420) Subject matter wherein the solid polymer is mixed with an aldehyde or aldehyde derivative reactant or polymer derived therefrom.

(1) Note. Hexamethylenetetramine is regarded for this subclass as an aldehyde derivative and not as an amine reactant. Reactions therewith are in this subclass.