METHOD OF PREPARING SYNTHETIC FILM FORMING AGENT Russian patent published in 2000 - IPC

FIELD: petrochemical and paint-and-varnish industry. SUBSTANCE: cooligomerization of components of piperylene-containing mixes is carried out at 50-120 C. Catalyst is titanium tetrachloride, promoter is mixture of lower carbonyl compound with water. After cooligomerization, polymerizate is maintained at 50-120 C, light C₅-C₇ hydrocarbons are degassed, and the resulting product is maintained at 50-120 C for 10-25 h, catalyst is then deactivated and light hydrocarbons are degassed. Catalyst promoter is introduced into polymerizate at each maintenance stage. EFFECT: lower amount of siccative used stabilized whiteness of white paint and higher water resistance. 1 dwg, 2 tbl