NOVEL ANIONIC POLYMERIZATION INITIATOR, USE THEREOF FOR SYNTHESIZING A DIENE ELASTOMER HAVING AN ALKYNE FUNCTION AT THE CHAIN END, AND FUNCIONALIZED DIENE ELASTOMER
申请人:COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
公开号:US20140243480A1
公开(公告)日:2014-08-28
An anionic polymerization initiator of formula:
in which:
Met, which can be borne by the ortho, meta or para position, denotes an alkali metal, R
1
and R
2
, and also R
3
and R
4
, which can be borne by the ortho, meta or para position, denote a hydrogen atom or an alkyl, cycloalkyl, aryl or arylalkyl group, and R
5
denotes an alkyl, cycloalkyl, aryl or arylalkyl group or a protective group for the alkyne functional group.
The use of such a polymerization initiator makes possible the synthesis of a diene elastomer bearing, at one or each of its chain ends, a group comprising an alkyne functional group with a high degree of functionalization.