| 摘要 |
<p>Amino and amido carboxylates of divalent tin, zinc, cobalt and nickel which are useful as catalysts for polyurethane formulations. Such compounds correspond to either of the formulae: , or wherein R1 and R2 are independently C1-C20 alkyl, C6-C20 cyclohydrocarbyl, C2-C20 hydroxyalkyl or alkoxyalkyl, or R1 and R2 together with N form a nitrogen-containing heterocyclic ring of 5 or 6 atoms; R3 is a group where n is an integer from 2 to 6 or a group where R4 is an alkyl, cycloalkyl or aryl group of up to 6 carbon atoms: A is wherein R5 and R6 are independently hydrogen, C1-C4 alkyl or R5 and R6 together form part of a six-member cyclohydrocarbyl ring, and M is divalent tin. zinc, cobalt or nickel.</p> |
