Diene polymers and copolymers terminated by reaction with N-alky

Details Diene polymers and copolymers terminated by reaction with N-alky Diene polymers and copolymers terminated by reaction with N-alky

1991-07-19

1992-05-05

Lipman, Bernard

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

525315, 525316, B60C 902

Patent

active

051099071

ABSTRACT:
A process is provided for preparing a terminally functionalized polymer from a living polymer obtained by anionic polymerization of a diene monomer or mixture of a diene monomer and a vinyl aromatic hydrocarbon monomer which comprises reacting the living polymer with a compound having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are selected from the group consisting of H, alkyl, cycloalkyl, aryl, dialkylaminoaryl, aralkyl, and aprotic O, N and S- containing alkyl, cycloalkyl, aryl and aralkyl groups; wherein R.sub.3 is selected from the group consisting of alkyl, cycloalkyl, aryl, dialkylaminoaryl, aralkyl, and aprotic O, N and S- containing alkyl, cycloalkyl, aryl and aralkyl groups; with the proviso that at least one of the R.sub.1, R.sub.2 and R.sub.3 groups must be a dialkylaminoaryl group and that not all of the R.sub.1, R.sub.2 and R.sub.3 groups can be aryl groups.
The resultant terminally functionalized polymer has reduced hysteresis properties and may be utilized to prepare elastomer compositions and tire treads having reduced rolling resistance.

REFERENCES:
patent: 3178348 (1965-04-01), Strobel et al.
patent: 4677153 (1987-06-01), Kitahara et al.
patent: 4735994 (1988-04-01), Roggero et al.
patent: 4816520 (1989-03-01), Bronstert

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