Reduction of the amine content of recycled polyols

Details Reduction of the amine content of recycled polyols Reduction of the amine content of recycled polyols

1998-08-19

1999-10-19

Gorr, Rachel

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

Synthetic resins

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

521163, 564 59, 564 78, 528 85, 25218226, C08G 1832

Patent

active

059689927

ABSTRACT:
In a process for reducing the primary amine content of a composition comprising at least one polyol, in which a composition comprising at least one polyol is admixed with at least one isocyanate which contains only secondary and/or tertiary, aliphatically bound isocyanate groups, isocyanate is added in an amount of up to 5% by weight, based on the total composition, and a polyol preparation is obtained.

REFERENCES:
patent: 5357006 (1994-10-01), Gassan et al.
patent: 5616623 (1997-04-01), Munzmay

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