FIELD: spherical powders.
SUBSTANCE: powder varnish is prepared by mixing in an aqueous medium a mixture of cellulose nitrates with recycled process waste together with diphenylamine and a solvent – ethyl acetate. Powder varnish is dispersed into spherical particles. Powder elements are dehydrated and the solvent is removed from them. As cellulose nitrates, pyroxylin or a powder mass based on flax cellulose is used. It is mixed in an aqueous medium for 40-55 minutes. 4.0-8.0 weight parts of solvent ethyl acetate are added. Then the powder varnish is prepared for 90-100 minutes.
EFFECT: obtaining one- and two-basic spherical powders from pyroxylin and powder mass based on flax cellulose.
1 cl, 2 tbl
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