METHOD OF OBTAINING POLYMER BASE OF SOAKING COMPOSITION FOR TYRE CORD Russian patent published in 2014 - IPC C08L9/10 C08F236/10 D06M15/19 D06M15/693 

FIELD: chemistry.

SUBSTANCE: invention relates to the tyre industry, in particular to a method of obtaining a polymer base of a soaking composition for the tyre cord. Obtaining the polymer base of the soaking composition is performed in three stages: at the first stage latex of an inoculating butadiene-styrene-butylacrylate copolymer, containing in the main chain a copolymer of butadiene, styrene and butylacrylate in a ratio (13-45):(50-80):(5-12) respectively, is obtained. In the process of the copolymer obtaining a combination of anion-active surface active substances: sodium alkylbenzolsulphonate and sodium salt of sulphate of oxyethylated alkylphenol or oxyethylated fatty alcohol with a degree of oxyethylation 10-40 is applied. At the second stage of polymerisation butadiene, methacrylic acid, methacrylamide are inoculated to the main polymer chain in a ratio (93.0-97.5):(2-5):(0.5-2.0), respectively, with a ratio between the basic polymer and the total quantity of monomers being (20 - 35):(65 - 80). At the third stage butadiene-1,3, which has not reacted, is distilled with further bringing the polymer base to a value of pH 9.0-9.5.

EFFECT: invention makes it possible to obtain a universal, non-toxic, fire-safe highly adhesive polymer base for soaking the tyre cords of various makes in the absence of a leukanol disperser, producing a negative effect on ecology.

1 tbl, 8 ex