| abstract |
Disclosed is a casting material consisting of: a curable liquor containing a liquid monomer and (optionally) polymer components dissolved in the monomer; and an inorganic filler containing a quartz sand product. In order to simplify the production of white moulded articles, it is proposed that the quartz sand product used should be a product whose grains should each have a core essentially of quartz and an outer layer essentially of alpha -cristobalite (low-temperature modification). |