| 摘要 |
The present invention relates to the curative component of poly urethane/urea-forming casting compositions containing (a) an aromatic polyamine containing at least one thioether group, (b) a phosphate ester and (c) an aldehyde or a compound which forms an aldehyde upon reaction with water. Component (c) prevents the composition from discoloring with time into an unacceptable dark color and also neutralises the strong odor resulting from the amine curative and its decomposition byproducts.
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