Expandable non-sagging polyurethane compositions

Details Expandable non-sagging polyurethane compositions Expandable non-sagging polyurethane compositions

1990-04-19

1992-11-24

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 44, 528 60, 528 85, C08G 1830, C08G 1848

Patent

active

051663031

ABSTRACT:
The present invention is directed an expandable, non-sagging polyurethane composition prepared by mixing: a liquid polysocyanate with a liquid isocyanate reactive mixture. The isocyanate reactive mixture comprises i) one or more hydroxyl group containing compounds containing from 2 to 8 hydroxyl groups and having molecular weights of from about 1000 to about 6000, ii) one or more low molecular weight diols or triols having hydroxyl equivalent weights of about 200 or less, iii) one or more organic di- or polyamines, and iv) a relatively small amount of water.

REFERENCES:
patent: 4478960 (1984-10-01), Buethe et al.
patent: 4695618 (1987-09-01), Mowrer
patent: 4954199 (1990-09-01), Rains et al.

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