Random isomonoolefin/allyl styrene copolymers and functionalized derivatives thereof
AssigneeExxon Chemical Patents Inc.
InventorsTimothy Daniel Shaffer, David Yen-Lung Chung
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Abstract
The invention provides a copolymer of an isomonoolefin having from 4 to 7 carbon atoms and containing a copolymerized alkenyl styrene moiety represented by the formula I: where m=0-2, n=0-20, each of R1 through R7 are independently selected from the group consisting of hydrogen, C1 to C10 alkyl and C1 to C10 primary or secondary alkyl halides, and at least one of R1, R2 or R3 is hydrogen, and when m=1 or 2, R3 and R1 are —CH2—.
Claims8
A copolymer of an isomonoolefin having from 4 to 7 carbon atoms and an alkenyl styrene moiety represented by the formula:
- wherein m =0-2, n=0-20, each of R1 through R3 are independently selected from the group consisting of hydrogen and C1 to C10 alkyl, each of R4 through R7 are independently selected from the group consisting of hydrogen, C1 to C10 alkyl and C1 to C10 primary or secondary alkyl halides, and at least one of R1, R2, or R3 is hydrogen, and when m =1 or 2, R3 and R1 are —CH2—.
A functionalized copolymer of an isomonoolefin having from 4 to 7 carbon atoms and a functionalized styrenic-type moiety represented by the formula:
- wherein m=0-2, n=0-20, each of R1 through R3 are independently selected from the group consisting of hydrogen and C1 to C10 alkyl, each of R4 through R7 are independently selected from the group consisting of hydrogen, C1 to C10 alkyl and C1 to C10 primary or secondary alkyl halides, and at least one of R1, R2, R3 is hydrogen, and when m=1 or 2, R3 and R1 are —CH2—, and at least one of X and Y is a functional group containing oxygen, sulfur, silicon, nitrogen, carbon, halogen or phosphorous, and not more than one of X and Y is hydrogen.
A process for preparing a copolymer of an isoolefin having from 4 to 7 carbon atoms and an alkenyl styrene moiety represented by the formula:
- wherein m=0-2, n=0-20, each of R1 through R3 are independently selected from the group consisting of hydrogen and C1 to C10 alkyl, each of R4 through R7 are independently selected from the group consisting of hydrogen, C1 to C10 alkyl and C1 to C10 primary or secondary alkyl halides, and at least one of R1, R2, or R3 is hydrogen, and when m=1 or 2, R3 and R1 are —CH2—;
- said process comprising contacting the isoolefin and styrenic moiety under cationic polymerization conditions comprising a Lewis Acid Catalyst, said Lewis Acid Catalyst being weaker than aluminum trichloride.
Dependencies are inferred from the claim text.