.~ ION-EXCHANGE POLYMER OR PROCESS OF PREPARING {7}
26
.~.~ Process of regenerating
DEFINITION
Classification: 521/26
(under subclass 25) Subject matter directed to a used ion-exchange polymer which used ion-exchange polymer is subjected to a chemical treatment to effect regenerating to essentially its original ion-exchange polymeric form.
(1) Note. Regenerating is meant to include chemical treatment of a used ion-exchange polymer thereby rendering the treated polymer to assume essentially its original ion-exchange polymeric form.
(2) Note. Purification of a contaminated ion-exchange polymer by physical or chemical means is classified with the ion-exchange polymer purified.
SEE OR SEARCH CLASS
523, Synthetic Resins or Natural Rubbers,
310+, for a process of forming a desirable composition of a polymer involving the use of ion-exchange or sorptive material or semipermeable membrane in the process.
528, Synthetic Resins or Natural Rubbers, 482, for the treatment of a polymer with an ion-exchange material to effect purification of the polymer.
