PHENOTHIAZINE DERIVATIVES PROCESS FOR THEIR PREPARATION AND THEIR USE AS STABILIZERS FOR PLASTICS PREPARED BY MEANS OF POLYISOCYANATE ADDITION POLYMERIZATION

摘要

NEW PHENOTHIAZINE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND THEIR USE AS STABILIZERS FOR PLASTICS PREPARED BY MEANS OF POLYISOCYANATE ADDITION POLYMERIZATION The subject invention relates to new phenothiazine derivatives, processes for their preparation, and, in particular, the use of the phenothiazine derivatives which are preferably liquid at 20.degree.C as stabilizers against UV radiation and thermal decomposition in plastics prepared by means of polyisocyanate addition polymerization, preferably non-cellular, microcellular and cellular polyurethanepolyurea elastomers.