Solid particulate catalysts comprising bridged metallocenes

A solid, particulate catalyst comprising:

• (i) a complex of formula (I) having two multicyclic ligands:
• wherein
• M is zirconium or hafnium;
• each X of X2 is a sigma ligand;
• L is a divalent bridge selected from —R′2C—, —R′2C—CR'2—, —R′2Si—, —R′2Si—SiR′2—, —R′2Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-alkyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl;
• each R1 independently is a linear or branched C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms from groups 14-16;
• T1 and T4, which can be the same or different, are an OR2, a SR2, CH(R18)2 , CH2R18, aryl or heteroaryl group;
• each R2, which can be the same or different, is a C1-C20 hydrocarbyl radical;
• each R18, which can be the same or different, is a C1-C20 hydrocarbyl radical or two R18 groups together with the carbon atom to which they are attached may form a cyclic C4-C20 hydrocarbyl group;
• T2 and T3, which may be the same or different, are a C(R18)3 group;
• W1 and W2, which may be the same or different, are a 5 or 6 membered aryl or heteroaryl ring wherein each atom of said ring is optionally substituted with an R5 group;
• each R5, which can be the same or different, is a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16;
• and optionally two adjacent R5 groups taken together can form a further mono or multicyclic ring condensed to W1 or W2, optionally substituted by one or two groups R5;
• and
• (ii) a cocatalyst;
• wherein the solid, particulate catalyst is free of an external carrier.