Dispersible vinylidene chloride polymer powders as additives...

C - Chemistry – Metallurgy – 08 – L

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C08L 27/08 (2006.01) C08F 214/08 (2006.01) C08J 3/11 (2006.01) C08J 9/00 (2006.01) C08L 67/02 (2006.01) C08L 75/04 (2006.01)

Patent

CA 1127790

Abstract of the Disclosure A vinylidene chloride polymer powder, having a second order transition temperature of at least 50°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 poly- urethane foams to impart enhanced flame retardancy and load-bearing properties thereto.

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