Redispersible polymer powders by redistribution of polyvinyl...

Details Redispersible polymer powders by redistribution of polyvinyl... Redispersible polymer powders by redistribution of polyvinyl...

C - Chemistry, Metallurgy

08

J

C08J 3/12 (2006.01)

Patent

CA 2147803

A process for making a spray dried redispersible polymer powder, especially a VAE copolymer powder, by spray drying a polymer emulsion containing a polyvinyl alcohol redispersant. A sufficient amount of the total polyvinyl alcohol redispersant is added to the polymer emulsion prior to spray drying and the remaining amount of polyvinyl alcohol redispersant is added as a dry powder to the spray dried polymer powder.

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