| 摘要 |
<p>Polymers containing flame retardant amounts of addition products of alkylhalogen-free esters of (1a) phosphorus acids, (1b) carboxylic acids, or (1c) sulfonic acids and (2) a bicyclic phosphite (1-alkyl-4-phospha-3,5,8-trioxabicyclo-[2,2,2]-octane), said addition products having the following group; WHERE R is lower alkyl C1-C4), preferably C1-C2, an hydroxyalkyl (C1-C4), preferably C2-C3; the addition products of (1a) or (1b) and (2); and preparation of the addition products by heating a mixture of (1a) or (1b) and (2) to an elevated temperature (e.g., 175 DEG -300 DEG C.).</p> |
