Redox resins

Claim 1

AN INSOLUBLE, INFUSIBLE, CORSS LINKED, REDOX RESIN WHICH IS THE ACID CONDENSATION PRODUCT WITH AN ALDEHYDE MARERIAL SELECTED FROM THE GROUP CONSISTING OF AN ALIPHATIC ALDEHYDE, FURFURAL, AND A COMPOUND CAPABLE OF YIELDING AN ALIPHTIC ALDEHYDE UNDER THE REACTION CONDITIONS, OF A POLHYDROXYLATED PHENOL OF NOT MORE THAN TWELVE AROMATIC RING CARBON ATOMS, ALL OF SAID RING CARBOB ATOMS BEING BOUND TO EACH OTHER BY CARBON-CARBON BONDS, HAVING FOUR TO FIVE HYDROXYL GROUPS ATTACHED TO SAID AROMATIC CARBON ATOMS, HAVING TWO PAIRS OF PHENOLIC HYDROXYL GROUPS CAPABLE OF FORMING METALLIC CHELATES AND HAVING AT LEAST ONE ALDEHYDE REACTIVE POSITION ON THE AROMATIC RING, THERE BEING IN ADDITION TO SAID POLYHYDROXYLATED PHENOL ALSO THE PHENOL, CATECHOL, AS THE SOLE ADDITIONAL WHENEVER THE NUMBER OF ALDEHYDE REACTIVE POSITIONS ON THE AROMATIC RING OF THE POLYHYDROXYLATED PHENOL IS LESS THAN THREE, SAID POLYHYDROXLATED PHENOL BEING OXIDIZABLE TO A QUINONE, THE RATIO OF THE NUMBER OF MOLES OF SAID ALDEHYDE MATERIAL TO THE NUMBER OF MOLES OF TOTAL PHENOL IN THE RANGE OF 1.1-2.5 TO 1.