A method for preparing polybutene by polymerization of a raw material of a carbon number 4 (C4) compounds having an isobutene amount of 50 to 75% by weight, is disclosed. The raw material of C4 compounds is selected from the group consisting of (a) C4 compound material obtained by adding high purity isobutene to C4 raffinate-1; (b) C4 compound material obtained by adding high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process to C4 raffinate-1; (c) C4 compound material obtained by adding high purity to butane-butene oil (B-B oil); (d) C4 compound material obtained by adding high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process to butane-butene oil (B-B oil); (e) C4 compound material obtained by adding a dilute solvent to high purity isobutene; (f) C4 compound material obtained by adding a dilute solvent to high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process; (g) C4 compound material obtained by adding high purity isobutene to a mixture generated in dehydrogenation reaction that converts isobutane to isobutene; and (h) C4 compound material obtained by adding high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process to a mixture generated in dehydrogenation reaction that converts isobutane to isobutene.

A method for preparing polybutene by polymerization of a raw material of a carbon number 4 (C4) compounds having an isobutene amount of 50 to 75% by weight, is disclosed. The raw material of C4 compounds is selected from the group consisting of (a) C4 compound material obtained by adding high purity isobutene to C4 raffinate-1; (b) C4 compound material obtained by adding high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process to C4 raffinate-1; (c) C4 compound material obtained by adding high purity to butane-butene oil (B-B oil); (d) C4 compound material obtained by adding high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process to butane-butene oil (B-B oil); (e) C4 compound material obtained by adding a dilute solvent to high purity isobutene; (f) C4 compound material obtained by adding a dilute solvent to high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process; (g) C4 compound material obtained by adding high purity isobutene to a mixture generated in dehydrogenation reaction that converts isobutane to isobutene; and (h) C4 compound material obtained by adding high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process to a mixture generated in dehydrogenation reaction that converts isobutane to isobutene.

A method for preparing polybutene by polymerization of a raw material of a carbon number 4 (C4) compounds having an isobutene amount of 50 to 75% by weight, is disclosed. The raw material of C4 compounds is selected from the group consisting of (a) C4 compound material obtained by adding high purity isobutene to C4 raffinate-1; (b) C4 compound material obtained by adding high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process to C4 raffinate-1; (c) C4 compound material obtained by adding high purity to butane-butene oil (B-B oil); (d) C4 compound material obtained by adding high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process to butane-butene oil (B-B oil); (e) C4 compound material obtained by adding a dilute solvent to high purity isobutene; (f) C4 compound material obtained by adding a dilute solvent to high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process; (g) C4 compound material obtained by adding high purity isobutene to a mixture generated in dehydrogenation reaction that converts isobutane to isobutene; and (h) C4 compound material obtained by adding high amount isobutene mixture which is generated in an olefin conversion unit (OCU) process to a mixture generated in dehydrogenation reaction that converts isobutane to isobutene.

Disclosed herein, inter alia, are oxidized polyisobutene compounds and compositions and methods of making the same.

Disclosed herein, inter alia, are oxidized polyisobutene compounds and compositions and methods of making the same.

The present invention provides a method for preparing a polybutene oligomer including a step of oligomerizing a polymerization solution including a halogenated hydrocarbon solvent, a nonpolar hydrocarbon solvent and an isobutene monomer in the presence of an organometal catalyst.

The present invention provides a method for preparing a polybutene oligomer including a step of oligomerizing a polymerization solution including a halogenated hydrocarbon solvent, a nonpolar hydrocarbon solvent and an isobutene monomer in the presence of an organometal catalyst.

The present invention provides a method for preparing a polybutene oligomer including a step of oligomerizing a polymerization solution including a halogenated hydrocarbon solvent, a nonpolar hydrocarbon solvent and an isobutene monomer in the presence of an organometal catalyst.

Provided herein are polyolefin dispersants, as well as methods for producing polyolefin dispersants. The polyolefin dispersants can be defined by the formula below ##STR00001## where R.sup.x is cationic initiator residue; R.sup.a is a polyolefin group; R.sup.1 and R.sup.2 are each, independently in each —(CR.sup.1R.sup.2) unit, H, alkyl, alkoxy, or alkylaryl; R.sup.3 and R.sup.4 are each, independently, H, alkyl, or alkoxy; m is an integer from 1 to 20; n is an integer from 1 to 6; r is an integer from 1 to 4; Y is a polyvalent amine linker comprising one or more tertiary amines, wherein the polyvalent amine linker does not include a primary amine or a secondary amine; and A is absent, or comprises a dispersive moiety.

Provided herein are polyolefin dispersants, as well as methods for producing polyolefin dispersants. The polyolefin dispersants can be defined by the formula below ##STR00001## where R.sup.x is cationic initiator residue; R.sup.a is a polyolefin group; R.sup.1 and R.sup.2 are each, independently in each —(CR.sup.1R.sup.2) unit, H, alkyl, alkoxy, or alkylaryl; R.sup.3 and R.sup.4 are each, independently, H, alkyl, or alkoxy; m is an integer from 1 to 20; n is an integer from 1 to 6; r is an integer from 1 to 4; Y is a polyvalent amine linker comprising one or more tertiary amines, wherein the polyvalent amine linker does not include a primary amine or a secondary amine; and A is absent, or comprises a dispersive moiety.