METHOD OF SYNTHESIS OF POLYOLEFIN DERIVATIVE CONTAINING SUCCINIC ANHYDRIDE GROUPS Russian patent published in 1995 - IPC

FIELD: organic chemistry. SUBSTANCE: method involves interaction of polyolefin containing succinic anhydride groups with above than molar excess of maleic anhydride. Polyolefin source: polyisobutylene with average molecular mass (M) 920-2000 and containing 74 mol. terminal groups as total quantity of terminal groups of the structural formula -C(CH₃)₂-CH₂-C(CH₃)=CH₂ and 10 mol. terminal groups of the structural formula -C(CH₃)₂-CH=C(CH₃)₂. Mole ratio of polyisobutylene maleic anhydride 1: (2-3), respectively. Synthesized polyisobutylene succinic anhydride interacts with amine containing at least four groups. Synthesis of polyisobutylene succinic anhydride is carried out at 198-235 C. EFFECT: improved method of polyolefin synthesis. 2 cl