| 摘要 |
<p>N-(2,2,6,6-tetraalkyl-4-piperidinyl)imide containing polymer is prepared by blending together a mixture of a polymer containing anhydride functions and a 4-amino-2,2,6,6-tetraalkylpiperidine or its 1-alkyl or 1-acyl derivatives and heating said materials in the blend, either prior to or during the blending step to the molten stage of the polymer; thereafter, heating said blend above 180 DEG C for a sufficient time to form the product. All volatile by-products are removed either simultaneously or concurrently with the above 180 DEG C heating step.</p> |
