Hydrosilylation reaction catalysts and curable compositions and methods for their preparation and use

摘要

A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition is capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains an iron-organosilicon ligand complex that can be prepared by reacting an iron carbonyl compound and an organosilicon ligand.

主权项

1. A composition comprising: either ingredients comprising
(A) a catalytically active reaction product of
i) an iron carbonyl compound having general formula (i): Fea(CO)b, where
subscript a is an integer with a value ranging from 1 to 3,subscript b is an integer with a value ranging from 5 to 12; andii) a silicon containing ligand that coordinates with Fe, where the silicon containing ligand has, per molecule, at least one atom of Si and at least one aliphatically unsaturated group; and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction; and optionally (C) an SiH functional compound having an average, per molecule, of one or more silicon bonded hydrogen atoms; which is distinct from ingredients (A) and (B); with the proviso that when ingredient (B) lacks a silicon bonded hydrogen atom, then the composition includes ingredient (C); oringredients comprising
(A) a catalytically active reaction product of
i) an iron carbonyl compound having general formula (i): Fea(CO)b, where
subscript a is an integer with a value ranging from 1 to 3,subscript b is an integer with a value ranging from 5 to 12; andii) a polyorganosiloxane ligand that coordinates with Fe, where the ligand has, per molecule, at least one aliphatically unsaturated group, and where the ligand is present in a molar excess based on the molar amount of ingredient i); and optionally (C) an SiH functional compound having an average, per molecule, of one or more silicon bonded hydrogen atoms; which is distinct from ingredient (A) and ingredient ii);
with the proviso that when ingredient ii) lacks a silicon bonded hydrogen atom, then the composition includes ingredient (C).