| abstract |
FIELD: chemistry. n SUBSTANCE: described is a liquid graft polymer obtained using a method which involves reaction of a polymer of a C 4 -C 7 monoolefin monomer and a C 4 -C 14 multiolefin monomer which contains butyl rubber, in the presence of a material for conducting graft copolymerisation, which contains maleic anhydride, and a free-radical polymerisation initiator which contains an organic peroxide, wherein the liquid graft polymer has number-average molecular weight (M n ) from 150000 to 30000. Described is a vulcanised compound containing the described liquid graft polymer and a vulcanising agent based on a multi-functional amine. Described is a method of decomposing a non-liquid butyl polymer to a liquid butyl graft polymer, where the method involves reaction of a non-liquid butyl polymer of a C 4 -C 7 monoolefin monomer and a C 4 -C 14 multiolefin monomer which contains butyl rubber, in the presence of a material for conducting graft copolymerisation, which contains maleic anhydride, and a free-radical polymerisation initiator containing dicumyl peroxide, wherein the liquid graft polymer has number-average molecular weight (M n ) from 150000 to 30000. n EFFECT: liquid maleated butyl rubber is obtained. n 16 cl, 2 tbl, 2 dwg, 10 ex |