Catalyst and composition for producing polyurethane foam
AssigneeHitachi, Ltd.
InventorsYasuo Hira, Susumu Tsuzuku, Masao Gotoh, Hitoshi Yokono
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Abstract
In a composition for producing polyurethane foam which comprises an organic polyisocynate compound, a compound having at least one active hydrogen atom in the molecule, a foaming agent and a catalyst as essential components, an aminoalkylsilane represented by the following general formula is contained: ##STR1## wherein n is 1 or 2, and R.sub.1 to R.sub.5 are alkyl groups. By use of such a catalyst polyurethane foam having a even color distribution and excellent mechanical properties is produced.
Claims8
A catalyst for producing polyurethane foam, which comprises at least one aminoalkylsilane compound represented by the following general formula:
- ##STR4## wherein n is 1 or 2, and R.sub.1 to R.sub.5 are alkyl groups and at least one of tertiary amine compounds, Bronsted acid salts thereof, and organic tin compounds as an additional catalyst component in a mixing ratio of the aminoalkylsilane compound to said additional catalyst component of 1:4-4:1 by mole.
A catalyst for producing polyurethane foam, which comprises
- (a) at least one aminoalkylsilane compound represented by the following general formula;
- ##STR5## wherein n is 1 or 2, and R.sub.1 to R.sub.5 are alkyl groups of C.sub.1 -C.sub.4 ;
- (b) at least one of a tertiary amine compound, a morpholine compound, an imidazole compound, 1,8-diazabicyclo(5,4,0)undecene-7, a Bronsted acid salt thereof and an organic tin compound in a mixing ratio of the aminoalkylsilane compound (a) to the said additional compound (b) of 1:4-4:1 by mole.
Dependencies are inferred from the claim text.