Anionic polymerization modifier

Details Anionic polymerization modifier Anionic polymerization modifier

C - Chemistry, Metallurgy

08

F

C08F 4/50 (2006.01) C08F 36/04 (2006.01) C08F 236/10 (2006.01)

Patent

CA 2076148

Abstract of the Disclosure ANIONIC POLYMERIZATION MODIFIER It has been unexpectedly discovered that various compounds, such as alkyl tetrahydrofurfuryl ethers, can be used to modify anionic polymerizations of conjugated diene monomers. These modifiers can be used to polymerize isporene monomer into high 3,4- polyisoprene at excellent polymerization rates. This is in contrast to the modifiers such as tetramethylethylen diamine which are typically used to modify such polymerizations. This invention more specifically discloses a process for the synthesis of 3,4-polyisoprene which comprises polymerizing isoprene monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a lithium initiator and (b) ethyltetrahydrofurfuryl ether.

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