Process for obtaining a polyol-containing homogeneous liquid com

Details Process for obtaining a polyol-containing homogeneous liquid com Process for obtaining a polyol-containing homogeneous liquid com

1975-12-19

1977-03-29

Miller, Edward A.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

260 23, C09K 300, B29H 1900, C08J 1104

Patent

active

040148092

ABSTRACT:
A process for obtaining a polyol-containing homogeneous liquid composition, which can be directly reused as a polyol component for the production of rigid polyurethane foam, from a rigid polyurethane foam, which comprises treating said foam at a temperature of from 150.degree. to 220.degree. C in the presence of a mixture of (a) an aliphatic diol having 4-7 carbon atoms and having a boiling point higher than 160.degree. C and (b) a monoalkanolamine having 2 to 8 carbon atoms, the amount of said monoalkanolamine (b) present in said mixture being within the range of from 1 to 20 percent by weight.

REFERENCES:
patent: 3114722 (1963-12-01), Einhorn et al.
patent: 3143515 (1964-08-01), Hurley
patent: 3300417 (1967-01-01), McElroy
patent: 3378497 (1968-04-01), Lanhan
patent: 3404103 (1968-10-01), Matsudaira et al.
patent: 3441616 (1969-04-01), Pizzini et al.

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