Calcium Carbonate an overview ScienceDirect Topics
Professor Marianne Gilbert, Mr.Stuart Patrick, in Brydson's Plastics Materials (Eighth Edition), 2017. 188.8.131.52 Calcium Carbonate. Calcium carbonate (also known as chalk), mined as calcite, is the most commonly used filler for PVC. It is discussed in detail in Section 8.4.1.It is usually surface treated with stearic acid, producing a layer of calcium stearate on the filler surface.