REDISPERSIBLE POLYMER POWDER Russian patent published in 2013 - IPC C08L7/00 C08L7/02 C08C1/02 C08C19/04 C08C19/28 C08J3/12 C04B26/02 C04B28/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a redispersible, water-soluble polymer powder based on at least one modified natural latex. The modified natural latex can be obtained by mixing natural latex with at least one radical initiator and/or oxidising agent. The latex can also be obtained by mixing and reacting natural latex with at least one unsaturated olefin monomer and with at least one radical initiator. The polymer powder contains up to about 95 wt % of least one natural latex, about 0 to 50 wt % of at least one protective colloid, about 2 to 70 wt % of at least one filler and/or anti-caking agent, as well as optionally further additives.

EFFECT: invention increases looseness of the polymer powder, the powder does not cake over a long period of time at high temperature, compositions containing said polymer powder have high water repellence or low water absorption.

10 cl, 5 tbl, 17 ex