| 摘要 |
In the preparation of a high resiliency polyurethane foam by reacting a polyisocyanate with a polyurea dispersion-containing polyol based masterbatch composition also containing a tertiary amine catalyst for the polyurethane reaction, the improvement for eliminating cure draft of such stored polyol compositions which comprises employing a catalyst composition consisting essentially of 5 to 15 wt % triethylenediamine, 20 to 35 wt % 4-(2-dimethylaminoethyl) morpholine, 20 to 35 wt % N,N,N',N'-tetramethyl-1,2-diamino-2-methylpropane, 10 to 25 wt % bis(dimethylaminoethyl)ether, and 5 to 40 wt % of an N-hydroxyalkyl quaternary ammonium acid salt.
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