Patent ID: 11881585
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC C  H

Claim 3:
4. A preparation method of a binder compound, the method comprising:
(i) making, in presence of an initiator, a chain transfer agent of formula (II) to undergo a polymerization reaction with a vinylidene fluoride monomer in a solvent:, wherein R1 and R2 each independently represents a straight or branched C1-12 alkyl, R3 represents a halogen or cyano group, and Z represents a straight or branched C1-12 alkylene;
(ii) making a reaction product obtained in step (i) to react with a reducing agent in a solvent to obtain a compound of a following formula (I); or
(iii) making the reaction product obtained in step (i) react with an amination agent in a solvent; and
(iv) making a reaction product obtained in step (iii) to react with an oxidant under an alkaline condition, to obtain a binder compound of the following formula (I),, wherein R4 represents a hydroxymethyl or amino; and m represents an integer selected from 7600-47000.