Tantalum phosphinates of the general formula: [Ta(OPRR'O).sub.p (Z).sub.5b.-p ].sub.n wherein 1.ltoreq.p.ltoreq.3; R and R' are aryl groups; Z may be a halo, alkoxy, or aryloxy group or a mixture thereof; and n may be any number. The preparation thereof is based on the reaction of a tantalum pentavalent compound (TaZ.sub.5) with a phosphinic acid (RR'P(O)OH) in a dry inert solvent at reflux temperature. Such compounds are useful in high temperature laminates as fillers. Oxide hydrates of these compounds may be prepared by hydrolysis and are similarly useful in high temperature laminates as fillers.
通式为[Ta(OPRR'O).sub.p (Z).sub.5b.-p ].sub.n的
钽膦酸盐,其中1≤p≤3;R和R'是芳基基团;Z可以是卤素、烷氧基、芳氧基或其混合物;n可以是任意数字。其制备基于
钽五价化合物(TaZ.sub.5)与
膦酸(RR'P(O)OH)在干燥惰性溶剂中回流温度下的反应。这些化合物在高温层压板中作为填料非常有用。这些化合物的氧化物
水合物可以通过
水解制备,并且同样可作为高温层压板中的填料。