| abstract |
Purpose: modified cis-1,4-polyisoprene can be used in the manufacture of tires and rubber products. SUMMARY OF THE INVENTION: Modification of cis-1,4-polyisoprene is carried out with two modifiers. As one of them, an adduct of maleic anhydride with a furan resin with a condensation degree of 2-80 is used. The second is a compound selected from the group comprising hydroquinone, hydrolyzed lignin, and bis- (2-methyl-5-tert-butyl-6-hydroxyphenyl) methane. The molar ratio of the adduct in terms of maleic anhydride and hydroquinone or bis- (3-methyl-5-tert-butyl-6-hydroxyphenyl) methane is from 1: 0.2 to 1: 0.4, respectively. The mass ratio of the adduct per maleic anhydride and lignin is from 1: 1 to 1: 2, respectively. 1 tab. sl C |