Patent ID: 8754138

Claim:
Cross-linkable polymer obtained by anionic polymerization initiation followed by cationic cross-linking of a monomer of general formula: (A) n Q(Y) p wherein Q represents a bond, —CO—, —SO 2 —, 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 CH 2 ; R represents H, an alkyl or oxa-alkyl radical of from 1 to 12 carbon atoms, CN or CH 2 COOR 1 wherein R 1 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.