Unsaturated alcohols as accelerators for hydrosilation

摘要

Hydrosilation comprises contacting (A) silicon hydride of formula (I) (R1)a(H)bSiX(4-a-b) and (B) an unsatd. reactant selected from (i) opt. substd. unsatd. organic cpds., and/or (ii) silicon cpds. comprising opt. substd. unsatd. organic substits., in presence of a platinum catalyst (VI) (platinum cpds. or platinum complexes) and an accelerator (unsatd. sec. or tert. alcohols of formula (II) and (III) or silylated unsatd. sec. or tert. alcohols of formula (IV) and (V)). In the formulae, R1 is 1-20C alkyl, 1-12 cycloalkyl or aryl; X is halo or OR1; a is 0-3; b is 1-3 and z+b is 1-4. R2 is H or 1-6C alkyl; R3 is 1-6C alkyl; c and d are 0-3; c+d is 0-3; e and f is 1-4 and n is 0-10.