PURPOSE: To obtain a catalyst for hydrosilylation reaction having a specified chemical structure, excellent in catalytic activity and crosslinking ability and suitable for use in the preparation of an organopolysiloxane, etc.
CONSTITUTION: The catalyst comprises a compd. of formula I {where M is Pt, Pd, Rh or the like; X is ANNNR, ANNNRR1, ANNNNA1 [R is a monovalent (substd.) hydrocarbon or the like; R1 is H or a monovalent (substd.) hydrocarbon; and each of A and A1 is a group of formula II (where G is CH or N; and R4 is a 1-12C monovalent hydrocarbon, halogen, amino, OH or the like) or the like ] or the like; Y is Cl, Br, I, NH3, P(C2H5)3, H, CO, pyridine, phenylnitrile or the like; (a) is 1-4; and (b) is 0-6}, e.g. Pt[C6H5NNNCH2CH3]4. The catalyst is obtd., e.g., by reacting a triazene of formula III (where R' is R) with a transition metallic compd. of formula IV [where M' is Pt, Pd or the like; and (d) is 1-8] in the presence of a base.
UDO PEETSU
BERUNBUARUTO DOIPUTSUAA
