配方类型:

RUBBER, RESINS, PLASTICS AND WAXES

配方说明:

Cation-Exchange Resin (Indian Patnet 47,468)

配方组成:

Formaldehyde/110 cc.
Naphthalene/52 g.
Sulfuric Acid (66'Be.)/33 cc.

配制方法:

Heat the naphthalene to 120'C. and add the acid, with stirring.
Then heat at 140 to 150'C. for 5 to 6 hours. Cool to 90'C. and add the formaldehyde, with good stirring, until a hard black resin results. Wash with water and regenerate with 5% hydrochloric acid.