公开(公告)号：WO1996023013A1

公开(公告)日：1996-08-01

申请号：PCT/IB1996000168

申请日：1996-01-29

Applicant: ALLIEDSIGNAL INC.

Inventor： ALLIEDSIGNAL INC. ,  ROTH, David, W., H., Jr. ,  DAS, Sajal

IPC: C08G08/28

CPC classification number: C08G8/28 ,  Y10S210/904 ,  Y10S210/908

Abstract: The invention is directed to a process of preparing multicyanate esters by: a) reacting an adduct of a tertiary amine and a phenol-formaldehyde oligomer with cyanogen halide in a solvent to form a reaction product stream containing at least one compound selected from the group consisting of tertiary amine-hydrohalide salt, solvent, and impurities, and, based upon the total weight of the reaction product stream excluding the weight of the tertiary amine-hydrohalide salt, from about 10 percent to about 40 percent of a multicyanate ester; b) recycling a portion of the reaction product stream into the mixture of step a; and c) separating and recovering the solvent and tertiary amine from the reaction product stream. The multicyanate ester products produced are useful as bonding agents in friction materials, molding materials, coatings, and adhesives.

Abstract translation: 本发明涉及通过以下方法制备多氰酸酯的方法：a）使叔胺和苯酚 - 甲醛低聚物的加合物与氰卤化物在溶剂中反应，形成含有至少一种选自以下的化合物的反应产物流： 的叔胺 - 氢卤酸盐，溶剂和杂质，并且基于除了叔胺 - 氢卤酸盐的重量之外的反应产物流的总重量，约10％至约40％的多氰酸酯; b）将一部分反应产物流再循环到步骤a的混合物中; 和c）从反应产物流中分离和回收溶剂和叔胺。 所生产的多氰酸酯产物可用作摩擦材料，模塑材料，涂料和粘合剂中的粘合剂。