US PATENT SUBCLASS 525 / 488
.~.~.~.~ With carboxylic acid or derivative reactant or polymer derived therefrom

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
480  DF  .~.~ Solid polymer or specified intermediate condensation product derived from at least one phenolic reactant and at least one aldehyde or aldehyde-type reactant or polymer therefrom {10}
481  DF  .~.~.~ Mixed with reactant containing more than one 1,2-epoxy group per mole or polymer derived therefrom {6}
488.~.~.~.~ With carboxylic acid or derivative reactant or polymer derived therefrom

DEFINITION

Classification: 525/488

With carboxylic acid or derivative reactant or polymer derived therefrom:

(under subclass 481) Subject matter wherein a solid polymer or specified intermediate condensation product derived from at least one phenolic reactant and at least one aldehyde or aldehyde-type reactant mixed with a reactant containing more than one 1,2-epoxy group per mole or polymer derived therefrom is further mixed with a carboxylic acid or derivative reactant or polymer derived therefrom.