ORGANIC-INORGANIC COMPOSITE

摘要

An inorganic-organic composite comprises an inorganic phase, such as gypsum crystals, and a film forming organic phase. The film forming organic phase i s selected from substituted starches having a degree of polymerization; degree of substitution and viscosity such that the substituted starches are insolub le in water during mixing but dissolve at a higher processing temperature durin g forming, setting or drying of the composite. Thus, excessive migration of th e substitute starch is prevented and the composite is substantially strengthen ed.