FIELD: chemical technology. SUBSTANCE: method involves mixing of vat residues in production of higher amines of C18-C20-fraction with 3-nitrobenzoic of 3-nitrophthalic acid and with 1,5-naphthalenedisulfoacid at 60-100 C at mass ratio of components 1: 0.1: 0.001, respectively. EFFECT: improved method of emulsifier preparing. 2 tbl
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Authors
Dates
1994-03-15—Published
1991-01-22—Filed