FIELD: chemistry.
SUBSTANCE: process includes resorcinol extraction with organic solvent tributyl phosphate (TBPh). The well-milled hard foamed polyurethane (FPU) will be modified at that with tributyl phosphate in the mass ratio FPU:TBPh = 1:(2.0-2.5), the extraction will be performed prior to establishing the interphase balance with subsequent isolation of organic phase from the water phase.
EFFECT: process enables one to enhance the concentrating coefficient and reduce expenditure of the organic solvent tributyl phosphate.
1 tbl, 2 ex
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