Aim With PAM as the substitute of the PAF in the aqueous inner coating

the environmental pollution due to free formol in the PVF can be eliminated. Method With acrylamide as momoner

PAM is synthesized through aqueous solution polymerization without initiating agent. Then with PAM as adhesive

with starch adhesive and carboxymethyl-cellulose as thickening agent

with assistants being added

the inner coating can be synthesized. Result Aqueous inner coating without formol can be made. Conclusion Through performance test

it is proved that it is a perfect substitute of the current aqueous inner coating.