Production of rigid foams based on isocyanate

Compositions – Preservative agents – Anti-corrosion

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521116, C08K 300, C08J 914

Patent

active

056840926

ABSTRACT:
In a process for producing rigid foams based on isocyanate, the blowing agent used is a mixture of at least one low-boiling hydrocarbon having from 3 to 7 carbon atoms, low molecular weight monohydric alcohols containing primary or secondary hydroxyl groups and having from 1 to 4 carbon atoms, and, if desired, the carbon dioxide formed from water and isocyanate. The rigid foams can be used as insulation material.

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Rudolf Brdicka, Grundlagen Der Physikalischen Chemie, 4th Edition, Veb Deutscher Verlag Der Wissenschaften, Berlin 1963, p. 855.

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