Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1982-10-18
1984-09-04
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528 68, 252182, C08G 1881
Patent
active
044698569
ABSTRACT:
This invention relates to new liquid or fluid polyamine/carbonic acid salt compositions free from crystalline content and their preparation from mixtures containing at least one aliphatic or cycloaliphatic polyamine, an aliphatic or cycloaliphatic hydroxyamine having at least one hydroxyl group and at least one amino group, and water and optionally diluents and/or conventional auxiliary agents and additives, by the addition of carbon dioxide. The proportion of polyamine to hydroxyamine is in the range of from about 95:5 to 10:90 % by weight, the quantity of water added is from about 0.01 to 5 mol of H.sub.2 O per amine equivalent (but at least 1 mol of water per mol of CO.sub.2) and the quantity of CO.sub.2 added is from about 0.01 to 0.99 mol of CO.sub.2 per amine equivalent. The invention further relates to the use of these liquid polyamine/carbonic acid salt compositions for the production of foamed polyurethane ureas, especially for coating substrates or for the production of sheet products, using prepolymers preferably containing blocked isocyanate groups and the liquid polyamine/carbonic acid salt compositions as chain lengthening agents and/or crosslinking agents and at the same time as physiologically harmless blowing agents.
REFERENCES:
patent: 2855384 (1958-10-01), Lehman et al.
patent: 3425964 (1969-02-01), Stanley
Rasshofer Werner
Schmitz Anton
Thoma Wilhelm
Bayer Aktiengesellschaft
Gil Joseph C.
Harsh Gene
Kight III John
Moore M. L.
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