US PATENT SUBCLASS 525 / 443
.~.~.~.~.~.~ Contains an amine-, N-C(=X)-, or N-S(=O)-containing reactant or polymer thereof (X is chalcogen)

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}
437  DF  .~.~.~.~ Solid polymer derived from polyhydroxy reactant and polycarboxylic acid or derivative reactant; or derived from di- or higher ester of a polycarboxylic acid as sole reactant {9}
441  DF  .~.~.~.~.~ Mixed with aldehyde or aldehyde derivative reactant or polymer derived therefrom {2}
443.~.~.~.~.~.~ Contains an amine-, N-C(=X)-, or N-S(=O)-containing reactant or polymer thereof (X is chalcogen)

DEFINITION

Classification: 525/443

Contains an amine-, N-C-, or N-S- containing reactant or polymer thereof (X is chalcogen):

(under subclass 441) Subject matter which contains an amine-, N, or N- containing reactant (X is chalcogen) or polymer thereof.

(1) Note. This subclass includes, for example, a mixture of a solid polymer derived from a polyhydroxy reactant and a polycarboxylic acid reactant or from a di- or higher ester of a polycarboxylic acid as sole reactant with an amine-, C- or N-containing reactant or solid polymer thereof and an aldehyde or aldehyde derivative or polymer thereof; or the reaction product of an amine-, C-, or N-containing reactant with an aldehyde or aldehyde derivative.

SEE OR SEARCH THIS CLASS, SUBCLASS:

441, for reactions with hexamethylenetetramine which is regarded therein as an aldehyde derivative.