Polyurethane foams based on amino polyols

Details Polyurethane foams based on amino polyols Polyurethane foams based on amino polyols

1985-10-24

1987-03-31

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521902, C08G 1814, C08G 1832

Patent

active

046543767

ABSTRACT:
An improved method for preparing amino polyols is disclosed. The method is the Mannich condensation of phenol, formaldehyde and diethanolamine in a molar ratio of (1:1:1), and then alkoxylation with a mixture of ethylene oxide and propylene oxide in a weight ratio of about 5:95 to 20:80 to form an amino polyol of hydroxyl number 440 to 515.
The method gives higher yields of aromatic amino polyols of lower viscosity than those of the comparative example.

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patent: 4499264 (1985-02-01), McDaniel
patent: 4500655 (1985-02-01), Brennan
patent: 4525488 (1985-06-01), Cuscurida et al.

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