US PATENT SUBCLASS 525 / 410
.~.~ Solid polymer derived from hetero-O-cyclic compounds as sole reactants wherein at least one reactant contains a hetero-O-ring other than solely as a 1,2-epoxy or anhydride, and wherein none of the reactants contains a plurality of methylol groups or derivatives thereof

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}
410.~.~ Solid polymer derived from hetero-O-cyclic compounds as sole reactants wherein at least one reactant contains a hetero-O-ring other than solely as a 1,2-epoxy or anhydride, and wherein none of the reactants contains a plurality of methylol groups or derivatives thereof {5}
411  DF  .~.~.~> Mixed with carboxylic acid or derivative reactant or polymer therefrom
412  DF  .~.~.~> Mixed with unsaturated reactant or polymer therefrom
413  DF  .~.~.~> Mixed with -O-C(=O)- or hal-C(=O)- reactant or polymer derived therefrom
414  DF  .~.~.~> Mixed with aldehyde or aldehyde derivative or polymer derived therefrom
415  DF  .~.~.~> Solid polymer derived from carboxylic acid cyclic ester, e.g., lactone, etc.

DEFINITION

Classification: 525/410

Solid polymer derived from hetero-O-cyclic compounds as sole reactant wherein at least one reactant contains a hetero-O-ring other than solely as a 1,2-epoxy or anhydride, and wherein none of the reactants contains a plurality of methylol groups or derivative thereof:

(under subclass 50) Subject matter involves processes of mixing a solid polymer derived from only hetero-O-cyclic reactants and wherein at least one reactant thereof contains a hetero-O-ring other than solely as a 1,2-epoxy or anhydride and wherein none of the reactants contain a plurality of methylol groups or is a derivative thereof with additional solid polymer, specified polymer-forming ingredients, specified intermediate condensation product, chemical treating agent or ethylenic agent; processes of reacting the above mixtures; or products resulting from the mixing or reacting processes, e.g., dioxane homopolymers, trioxane-ethylene oxide copolymers, etc.

(1) Note. Cyclic anhydrides and 1,2-epoxy groups are not considered as being hetero-O-cyclic and proper for this subclass. When these groups are present, however, there must be an additional hetero-O-ring present. This additional ring may be part of the 1,2-epoxy or anhydride group-containing compound or it may be a separate compound which is devoid of 1,2-epoxy or anhydride ring.

(2) Note. This subclass includes homo- or co-polymers of only hetero-O-cyclic compounds.