Copolymerization of polyenes and alkenes
AssigneeBridgestone Corporation
InventorZengquan Qin
Life of this patent
Estimating the term…
Abstract
Catalyst compositions that include a vanadium compound can be used to polymerize ethylenically unsaturated hydrocarbon monomers that include at least one polyene and at least one C?2#191-C?8#191 α-olefin, with the presence of a highly halogenated ketone increasing the activity of the catalyst composition while not negatively impacting the relative percentage (molar) of olefin mer incorporation.
Claims20
A process of polymerizing ethylenically unsaturated hydrocarbon monomers comprising contacting said monomers with a catalyst composition, said ethylenically unsaturated hydrocarbon monomers consisting of one or more conjugated dienes and propylene, said catalyst composition comprising a vanadium-containing compound and a highly halogenated ketone represented by the general formula
- where each of R1 and R2 independently is a C1-C8 (hydro)haloalkyl group represented, respectively by the general formulas CmQ2m+1 and CnQ2n+1 where Q is H or X, with X representing a halogen atom, and m and n each independently is an integer of from 1 to 8 inclusive, with the proviso that the quotient of z/y is from 1 to 2 inclusive, where z represents the total number of Q atoms in the highly halogenated ketone and y represents the total number of Q atoms that are halogen atoms, said contacting of said monomers with said catalyst composition optionally occurring at a temperature of from −10° to −30° C.
A process of polymerizing ethylenically unsaturated hydrocarbon monomers comprising contacting said monomers with a catalyst composition, said ethylenically unsaturated hydrocarbon monomers consisting of one or more conjugated dienes and a C2-C3 α-olefin, said catalyst composition comprising a vanadium-containing compound and a highly halogenated ketone represented by the general formula
- where each of R1 and R2 independently is a C1-C8 (hydro)haloalkyl group represented, respectively by the general formulas CmQ2m+1 and CnQ2n+1 where Q is H or X with the proviso that each Q on each C atom adjacent the carbonyl group of said highly halogenated ketone is X, with X representing a halogen atom, and m and n each independently is an integer of from 1 to 8 inclusive, with the proviso that the quotient of z/y is from 1 to 2 inclusive, where z represents the total number of Q atoms in the highly halogenated ketone and y represents the total number of Q atoms that are halogen atoms, said contacting of said monomers with said catalyst composition occurring at a temperature of from −10° to −30° C.
Dependencies are inferred from the claim text.