| 摘要 |
<p>Provided is a catalyst for the production of polyurethane resin, which has a sufficiently long working life (pot life) and therefore exhibits excellent mold-filling properties and excellent applicability to a substrate, and which can achieve rapid cure after the lapse of a certain time. The catalyst is characterized by comprising a salt (E) which comprises a cycloamidine (C) represented by general formula (1), a weak acid (WA) having a pKa1 of 4 to 11, and a strong acid (SA) having a pKa1 of 2 or lower, and in which the content of (WA) is 0.2 to 0.8mol per mol of (C), the content of (SA) is 0.2 to 0.8 mol per mol of (C), and the content of (WA+SA) is 0.8 to 1.2mol per mol of (C). In general formula (1), m is an integer of 2 to 6; and each methylene hydrogen may be substituted by an organic group.</p> |
