Patent ID: 7285596
Filing Date: 2007-10-23
Classification: C07F,C08F

Abstract:
1. An anionic polymerization diinitiator prepared by admixing a diisopropenyl benzene compound selected from the group 1,2-diisopropenylbenzene; 1,3-diisopropenylbenzene; 1,4-diisopropenylbenzene; 3,4,5,6 - tetramethyl-1,2-diisopropnenylbenzene; 2,4,5,6-tetraethyl-1,3-diiso-propenylbenzene; 2,3,5,6-tetra-n-hexyl-1,4-diisopropenyl-benzene; 3,4-dicyclohexyl-1,2-diisopropenyl-benezene; 5-(3-methyl-cyclopentyl)-1,3-diiso-propenylbenzene; 3-cyclopentyl-methyl-6-n-propyl-1,4 -diisopropenyl-benzene; 4-(2-cyclo-butyl-1-ethyl)-1,2-diisopropenylbenzene; 3-(2-n-propylcyclopropyl)-1,4-diisopropenylbenzene; 2-methyl-5 -n-hexyl-1,3-diisopropenylbenzene; 4-methyl-1,2-diiso-propenyl-benzene; 5-ethyl-1,3-diisopropenylbenzene; 3-methyl-1,4-diisopropenylbenzene; and mixtures thereof, with diethyl ether, ethylene, an organo lithium compound, and a solvent under reaction conditions sufficient to prepare a diinitiator having primary lithium alkyl reactive sites.