Process for the dispersion of chain extender in polyol

Details Process for the dispersion of chain extender in polyol Process for the dispersion of chain extender in polyol

1982-11-01

1984-04-03

Padgett, Benjamin R.

Compositions

Reductive bleachant, deoxidant, reductant, or generative

Sulfur containing reductant, bleachant, deoxidant, or...

521177, 528 75, C09K 300, C08G 1810

Patent

active

044406649

ABSTRACT:
The present invention provides a process for preparing stable, uniform dispersions of chain extenders in polyurethane-forming polyol. The preferred chain extender is hydroquinone di(.beta.-hydroxyethyl)ether. The process comprises an adiabatic quenching step in combination with an annealing step. The inventive process avoids the need for slow, carefully controlled cooling schemes.

REFERENCES:
patent: 3791984 (1974-02-01), Brogli et al.
patent: 3909445 (1975-09-01), Ernst
patent: 4374970 (1983-02-01), Robinson

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