The Dow Chemical Company

Alvin W Baker

Patrick H Martin

Robert DeVellis

Robin A Withers

Vinyl ester/styrene mixtures are flexibilized by addition thereto of minor amounts of urethanes which (1) comprise at least one polyglycol moiety and two urethane groups and are terminated by vinyl-reactive end groups, and (2) form a dispersed second phase in the cured mixture. The flexibilized compositions otherwise largely retain the characteristic properties of the unflexibilized mixtures.

Toughening of cured vinyl ester resins by inclusion in the uncured

Solutions of amine-salified phosphoresins and the free amine in organic solvents are converted to stable dispersions of the salified resins in water by steam stripping under conditions such that at least part of the water is provided as condensed steam.

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Antioch, CA, United States of America

Alvin W Baker