Spacered Urea (Meth)Acrylates

A compound of the general formula (I):

• wherein
• R1 is —H or -Me;
• R2 is —H, or a C1-C20 linear, branched or cyclic alkyl or aryl group;
• R3 is —H, or a C1-C20 linear, branched or cyclic alkyl or acyl group, or benzene-sulfonyl, tosyl, p-chlorophenyl, adamantyl, 2,6-dimethyl phenyl, 3,5-dimethyl phenyl, or 2,6-dipropyl phenyl;
• R2 and R3 may be the same or different, with the exception that
• if R2=—H, then R3≠—H, and
• if R2=-Me, then R3≠-Me;
• X is —O— or —NH—;
• and
• L is a C4-C20 linear, branched or cyclic alkyl or aryl group, in which optionally, one or more carbon atoms within the carbon chain is replaced by one or more —O—, —NH— or —S— heteroatoms.