| 摘要 |
A process for the production of an imidomethyl phthalocyanine derivative having the formla I (see Fig I) wherein Pc represents a phthalocyanine residue optionally substituted by chlorine or bromine; M is hydrogen, or any metal capable of forming a metal phthalocyanine; m is a number within the range of from 0 to 1.0; n is a number within the range of from 0.1 to 4 and X is a residue such that, in combination with the group -C(=O)-N-C(=O)- , it forms a ¦ 5-, 6- or 7-membered cyclic anhydride, which process comprises reacting an aminomethyl phthalocyanine having the formula II (SO3H)m-MPc(CH2NH2)n (II), wherein Pc, M, m and n have their previous significance, with a 5-, 6- or 7membered cyclic acid anhydride having the formula III wherein X has its previous significance. The compounds of formula I are useful as additives for surface coatings and as thermal stabilisers for pigments used in engineering plastics.
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