Modified Mannich condensates and manufacture of rigid polyuretha

Details Modified Mannich condensates and manufacture of rigid polyuretha Modified Mannich condensates and manufacture of rigid polyuretha

1983-10-25

1984-12-11

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, 528 73, 528 78, C08G 1814, C08G 1832

Patent

active

044878524

ABSTRACT:
The invention relates to Mannich condensates of phenol, formaldehyde and an amine mixture consisting of diethanolamine and melamine which is then alkoxylated with propylene oxide or a mixture of propylene oxide and ethylene oxide. The thus-prepared alkoxylated Mannich condensates are then used as all or a part of the polyol component in making a rigid polyurethane foam having improved fire retardancy properties.

REFERENCES:
patent: 3297597 (1967-01-01), Edwards et al.
patent: 4137265 (1979-01-01), Edwards et al.
patent: 4221875 (1980-09-01), Yukuta et al.
patent: 4317889 (1982-03-01), Pcolinsky
patent: 4369258 (1983-01-01), Johnson

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