Abstract

The behaviour of 16 hydroquinone-quinone systems used as inhibitors in the curing of unsaturated polyester resin catalyzed by dibenzoyl peroxide was studied. The resin used in the experiments did not contain any inhibitor added in the manufacture process. To increase its reactivity the resin was accelerated by tertiary aromatic amines. In order to determine the influence of the inhibitors mixture on the resin properties induction times at 70°C, viscosities and gelation times were measured.

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