| 摘要 |
<p>A composition comprising a gas-expandable polymeric material and an activated hydrazodicarboxylate blowing agent, wherein the activator is selected from nickelbis(3,5-di-t-butyl-4-hydroxyben-zoate), a mixture of 2-hydroxy-4-n-octoxybenzophenone and nickel bis (2-oxy-4-n-octoxybenzophenone), nickel stearate, nickel trifluoroacetylacetonate, ¢2,2'-thiobis(4-t-octylphenolato)!nickel, nickelbis ¢O-ethyl-(3,5-di-t-butyl-4-hydroxybenzyl)phosphonate!, nickelammoniumsulfate, ethylenediaminetetra(methylenephosphonic acid), and hexamethylenediaminetetra(methylenephosphonic acid).</p> |
