The Dow Chemical Company

Jack H Benson

Dale S Gibbs

Reet T Fernandez

A vinylidene chloride polymer powder, having a second order transition temperature of at least about 50.degree. C., is recovered from a latex and dispersed with moderate shear in a non-solvent for vinylidene chloride polymers, such as a polyol used in the preparation of polyurethane materials. A dispersion of the powder and a polyol is eminently suitable for use in the preparation of polyurethane foams to impart enhanced flame retardancy and load-bearing properties thereto.

Dispersible vinylidene chloride polymer powders as additives for polymers

A crosslinked vinylidene chloride polymer microgel powder is recovered from a latex and dispersed with moderate shear in a nonsolvent for vinylidene chloride polymers, such as a polyol used in the preparation of polyurethane materials. A dispersion of the powder and a polyol is eminently suited for use in the preparation of polyurethane foams to impart enhanced flame-retardancy and load-bearing properties thereto.

Growing community of inventors

Midland, MI, United States of America

Jack H Benson