Process for preparing terminally functionalized living and quasiliving cationic telechelic polymers
AssigneesChevron Oronite Company LLC, The University of Southern Mississippi
InventorsCasey D. Stokes, Robson F. Storey, James J. Harrison
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Abstract
Disclosed is a method of preparing terminally functionalized telechelic polymers using a cationic living polymer product or a terminal tert-chloride chain end of a carbocationic quasiliving polymer product, which comprises quenching the polymer product with an N-substituted pyrrole to thereby functionalize the N-substituted pyrrole at the terminal reactive polymer chain end(s). Also disclosed are the terminal functionalized polyisobuyl N-substituted pyrrole compounds where the polyisobutyl group is substituted at the 2 and 3 position of the N-substituted pyrrole.
Claims25
A method for preparing an in situ telechelic polymer functionalized by having a heteroatomic chain end group, comprising quenching a cationic living polymer product or a terminal tert-chloride chain end of a carbocationic quasiliving polymer product in the presence of a Lewis acid, with an N-substituted pyrrole of formula I
- wherein:
- R1 and R2 are independently in each —(CR1R2)— unit selected from the group consisting of hydrogen and alkyl from C1 to C6 carbon atoms;
- m is an integer from 1 to 20;
- and
- X is selected from the group consisting of hydrogen, alkyl, aryl, alkaryl, alkoxy, heteroaryl, nitro, ureido, —OC(O)R3, —C(O)R4, —C(O)OR5, —C(O)NR6R7, —P(R8)3, —P(OR9)3, —SR10, —OSO3R11, and —S(O)R12;
- wherein R3 is alkyl or alkenyl;
- and R4, R5, R6, R7, R8, R9, R10, R11, and R12 are alkyl.
Dependencies are inferred from the claim text.