Isobutene polymer functionalization by means of hydroboration
AssigneeBASF SE
InventorsGabriele Lang, Hans Rath, Helmut Mach
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Abstract
A process is described for functionalizing isobutene polymers having terminal olefinic unsaturation by treating with the reaction product of a borane source with from 0.5 to 1.8 equivalents of an alkene having a molecular weight of less than 250 per mole of borane or by treating the isobutene polymer with the borane source in the presence of the alkene. The reaction mixtures retain low viscosity and good stirrability.
Claims19
A process for functionalizing isobutene polymers comprising reacting an isobutene polymer comprising at least one terminal olefinic unsaturation with a hydroborating agent, wherein the hydroborating agent used is the reaction product of a borane source with from 0.5 to 1.8 equivalents of an alkene comprising a molecular weight of less than 250 per mole of borane, or by reacting the isobutene polymer with the borane source in the presence of 0.5 to 1.8 equivalents of the alkene.
Dependencies are inferred from the claim text.