Which one of the following impression materials is elastic, sets by a chemical reaction and is catalyzed by chloroplatinic acid_______________?
Correct answer: B. Poly vinyl siloxane
- A. Condensation silicone
- B. Poly vinyl siloxane
- C. Polysulfide
- D. Polyether
Explanation
Polyvinyl siloxane is an addition-cured silicone whose platinum catalyst is commonly supplied as chloroplatinic acid or a related platinum compound. Condensation silicone uses an organotin catalyst, while polysulfide uses a different oxidizing system.
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