Process for hydrolysing polyurethane degradation products

Details Process for hydrolysing polyurethane degradation products Process for hydrolysing polyurethane degradation products

1997-01-21

1998-02-03

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Process of treating scrap or waste product containing solid...

521 49, 568621, C08J 1104

Patent

active

057145237

ABSTRACT:
Process for alcoholizing and hydrolysing a flexible polyurethane foam by bringing a flexible polyurethane foam in contact with an alcoholizing polyol, allowing the foam and the polyol to react in the presence of a catalyst which enhances alcoholysis and hydrolysis of the foam in an amount of 0.001 to 0.25 and preferably 0.001 to 0.08% by weight based on the weight of the foam, then allowing the mixture to separate in an upper phase and a lower phase and collecting these phases in separate containers, wherein the hydrolysis is conducted by adding water and allowing the mixture to react with the water after the foam has been combined with the polyol and before the mixture is allowed to separate.

REFERENCES:
patent: 4317939 (1982-03-01), Gerlock et al.

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