FIELD: chemistry.
SUBSTANCE: method involves vacuum drying at temperature of 76-120°C and excess pressure of 10-200 mmHg of a fat-wax mixture. The mixture is cooled to 4-40°C in 5-72 hours and the precipitated wax crystals are separated.
EFFECT: invention enables recycling without using chemical additives.
6 cl, 4 ex
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Authors
Dates
2010-04-10—Published
2008-12-29—Filed