VERFAHREN ZUM HERSTELLEN POLYOLHALTIGER FLUESSIGKEITEN AUS POLYURETHANABFAELLEN

摘要

1. Method for the manufacture of polyhydric alcohol containing fluids from polyurethane scrap by heating of optionally reduced-size polyurethane scrap with at least one glycol in the presence of at least one metal of the first or of the second main groups of the periodic system of elements and/or at least one strongly basic compound of a metal of the first or second main group of the periodic system of elements as catalyst at temperatures of approximately 150 to 220 degrees C, characterised in that dipropylene glycol and/or tripropylene glycol are used as the glycol.