Metallic inserts may be recovered undamaged from phenolic moldings by the following method: Cut or break the molding into pieces and discard all excess material. Place the pieces in a wiremesh basket and treat at 200 to 210'F. in the following solution Water/1 gal. Sodium Cyanide*/1 oz. Potassium Hydroxide/8 oz. *Highly poisonous. "Duponol" WA/0.1 OZ. Sodium Hydroxide/8 oz.
配制方法:
the cured phenolic molding compound will rapidly disintegrate in the solution and the metallic inserts are readily removed. If the inserts are discolored by the treatment, they may be put through a bright dip and are then ready for reuse.
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