| 摘要 |
<p>PURPOSE:To recover a high-quality cellulose plastics contg. little impurities. CONSTITUTION:A cellulose plastics is recovered by immersing a molded article based on the plastics in an aq. alkaline or acidic soln. and treating the article with cellulase. An example of the article is a photographic film made by coating a carrier film comprising the plastics with an undercoating layer; an example of the plastics, a cellulose ester of a lower fatty acid.</p> |
