配方类型：	PAPER
配方说明：	Water-Resistant Coating for Paper
配方组成：	28% Aqueous Ammonia/15 Oleic Acid/10 Zein/50 Solvent/20-50 Water/300 Rosin/40
配制方法：	In making formula 2, the rosin and oleic acid are first dissolved in the solvent. Zein is slurred in the water with stirring; ammonia is added to the slurry, followed by the cool solvent-oleic acidrosin solution. Stirring is continued until the solution is complete. The most satisfactory solvents are n-butyl alcohol, ethylene glycol monobutyl ether, or methyl isobutyl ketone.

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