| 摘要 |
<p>Polymers containing a predominance of units of N-(lower alkyl)dimethylglutarimide and substantially free of units of methacrylic acid or methacrylic anhydride may be stabilized against discoloration, both in processing of the polyglutarimide and in heat aging, by inclusion of certain trialkylphosphite or aliphatic bicyclic diphosphite stabilizers.</p> |
