The "Cereclor" 70 is first dissolved in the polyester at room temperature and the antimony oxide ground into the blend before the appropriate quantities of catalyst and accelerator (for cold curing) are added. the preparation of laminates and moldings is carried out in the usual manner. The curing time for the polyester will be slightly retarded by the presence of the "Cereclor" 70 and antimony oxide but the effect will not be serious if the latter material is quite dry.
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