process for the production of linear polymers (npcl amp; amp; darr; 2 amp; amp; darr;) amp; amp; darr; n amp; amp; darr; product

摘要

The molecular weight of the (NPCl2) polymer produced from the thermal polymerization of chlorocyclophosphazene trimer and/or tetramer or mixtures of trimer and tetramer is controlled by conducting the polymerization in the presence of controlled amounts of PCl5.