FIELD: chemistry of polymers, chemical technology.
SUBSTANCE: invention relates to a method for synthesis of secondary polytetrafluoroethylene powder. Method involves milling polytetrafluoroethylene waste, treatment of formed powder with chemical reagents followed by washing with water and drying. Treatment of prepared powder with chemical reagents is carried out with applying ultrasonic oscillations. Invention provides increasing the whiteness coefficient of secondary polytetrafluoroethylene powder from 77-79 to 92-95 as compared with prototype. Invention can be used in secondary processing polytetrafluoroethylene waste.
EFFECT: improved preparing method.
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