Chemistry of Polysulfide Impression MaterialJournal: International Journal of Science and Research (IJSR) (Vol.9, No. 4)
Publication Date: 2020-04-05
Authors : Vidhya. T. K;
Page : 417-418
Keywords : polysulfide; impression;
The base plate, is a polysulfide polymer that contain a multi-functional mercaptan (-SH) called a polysulfide polymer, a suitable filler such as lithopone or titanium dioxide to provide the required strength a plasticizer (dibutyl phthalate) to confer appropriate viscosity to the paste and a small quantity of sulphur, approximately 0.5 % as an accelerator the catalyst paste contains lead dioxide, filler and plasticizer as in the base paste, and oleic stearic acid as a retarder to the control the rate of the setting reaction.
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