CPC C08F 279/02 (2013.01) [B60C 1/00 (2013.01); C08F 236/06 (2013.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01)] | 14 Claims |
1. A diene elastomer bearing pendant imidazole functions in a molar content of at least 0.05 to 4 mol % of the constituent repeating units of the diene elastomer, wherein the diene elastomer is a copolymer of ethylene and of 1,3-butadiene which contains units of formula (I) or formula (II)
![]() the ethylene units representing at least 50 mol % of the constituent repeating units of the diene elastomer, and wherein the pendant imidazole functions are of formula (III)
![]() in which the symbols Y1, Y2, Y3 and Y4, which may be identical or different, represent a hydrogen or a substituent, and one of the symbols Y1, Y2, Y3 and Y4 denotes an attachment to a diene unit which is one of a plurality of diene units of the diene elastomer, a portion of the diene units of the diene elastomer are modified by grafting a modifying agent which contains a group that is reactive with respect to carbon-carbon double bonds and a group of formula (IV)
![]() in which the symbols Z1, Z2, Z3 and Z4, which may be identical or different, represent a hydrogen atom or a substituent, and at least one of the symbols Z1, Z2, Z3 and Z4 denotes an attachment to the reactive group.
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