Polymers obtained from monomers allowing a sequential polymerization, and their use for preparing ionic conductors

Cross-linkable polymer obtained by anionic polymerization initiation followed by cationic cross-linking of a monomer of general formula:

• (A)nQ(Y)p
• wherein
• Q represents a bond, —CO—, —SO2—, or an organic radical of n+p valence non reactive towards reagents initiating anionic or cationic polymerization, said organic radical being selected from alkyl, alkylaryl, arylalkyl optionally comprising oxa or aza substituents, and comprising from 1 to 30 carbon atoms;
• A is selected from the group consisting of
• Y is selected from the group consisting of
• and said Y is non-reactive toward agents initiating anionic polymerization;
• Z represents O or CH2;
• R represents H, an alkyl or oxa-alkyl radical of from 1 to 12 carbon atoms, CN or CH2COOR1 wherein R1 is H or an alkyl or oxa-alkyl radical of 1 to 12 carbon atoms;
• R′ represents H or an alkyl radical of 1 to 12 carbon atoms;
• and
• r varies between 1 and 6.
• n varies between 1 and 3;
• and
• p varies between 1 and 6.