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US 12,435,014 B1Granted
Propylene oligomerization processes with enhanced olefinic yields
AssigneeChevron U.S.A. Inc.
InventorsOleg A. Mironov, Sven Ivar Hommeltoft
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Abstract
In one embodiment the application pertains to a process which provides longer chain and less isomerized (more linear molecules). A propylene-derived olefin mixture is reacted under suitable conditions to form a mixture of oligomers in the presence of a catalyst comprising alkyl aluminum halide complex. A suitable alkyl aluminum halide complex comprises ethyl aluminum dichloride bis(2-chloroethyl) ether complex which may be used with a tert-butyl chloride or other initiator.
Claims12
A process comprising:
- providing a propylene-derived olefin mixture to a reactor;
- and
- reacting the propylene-derived olefin mixture under suitable conditions to form a mixture of oligomers in the presence of a catalyst comprising alkyl aluminum halide complex;
- wherein the propylene-derived olefin mixture comprises propylene dimer, propylene trimer, propylene tetramer, or any mixture thereof and wherein at least about 60% by weight of the total amount of propylene dimer, propylene trimer, and propylene tetramer in the propylene-derived olefin mixture is reacted to form the mixture of oligomers and wherein the formed mixture of oligomers comprises propylene oligomers comprising at least 15 carbons atoms.
1 more element
A process comprising:
- providing a propylene-derived olefin mixture to a reactor;
- and
- reacting the propylene-derived olefin mixture under suitable conditions to form a mixture of oligomers in the presence of a catalyst comprising an ethyl aluminum dichloride bis(2-chloroethyl) ether complex and a tert-butyl chloride initiator;
- wherein the propylene-derived olefin mixture comprises propylene dimer, propylene trimer, propylene tetramer, or any mixture thereof and wherein at least about 60% by weight of the total amount of propylene dimer, propylene trimer, and propylene tetramer in the propylene-derived olefin mixture is reacted to form the mixture of oligomers and wherein the formed mixture of oligomers comprises propylene oligomers comprising at least 15 carbons atoms;
- and
- wherein the suitable conditions comprise a temperature of at least about 15° C. and a catalyst concentration of at least about 0.02 M based on aluminum concentration.
3 more elements
Dependencies are inferred from the claim text.