FIELD: chemistry.
SUBSTANCE: invention relates to a method of obtaining a mother stock of natural rubber and silicon oxide. The method includes doping silicon oxide with aluminium; preparing a dispersion of the doped silicon oxide in water; bringing into contact and mixing plantation latex of natural rubber and the aqueous dispersion of the doped silicon oxide to obtain a coagulate; extracting the coagulate; drying the extracted coagulate to obtain a mother stock. One of the following conditions is satisfied: pH in the range of 3.5-6.0; 6-8 or higher than 8. The pH is measured immediately after bringing the two dispersions into contact.
EFFECT: invention increases the efficiency of obtaining a mother stock to more than 80%.
16 cl, 7 tbl, 3 ex
