Patent ID: 9353005
Filing Date: 2016-05-31
CPC Classification: C04B

Claim Text:
1. Process for the production of powder redispersible in water, said powder comprising: an organic component, a water-soluble organic polymeric protective colloid and, optionally, one or more further additives, wherein the organic component contains at least one compound with a cyclic group, the cyclic group being completely or partially saturated and having a melting point of approximately −20 to 250° C. and a molecular weight of about 100 to 10,000, and the organic component further contains a terpeneoid, a resin acid, colophony, terpene resin, terpene-phenol resin and/or their derivatives, and wherein the water-soluble organic polymeric protective colloid has a content of monocarboxylic acid and dicarboxylic acid as well as their anhydrides of less than 50 mole %, and not consisting of aromatic sulfonic acid condensates, and said process comprising the steps of: dispersing the organic component in water to obtain an aqueous dispersion, stabilizing the aqueous dispersion with the water-soluble organic polymeric protective colloid, wherein the weight ratio of the organic component to the water-soluble organic polymeric protective colloid is 95:5 to 5:95, and drying the aqueous dispersion by spray drying, freeze drying, and/or fluid bed drying, thereby forming the redispersible powder.