Tile and binder for the same

Claim 1

A TILE BINDER CONTAINING 50% TO 80% TO POLYSTYRENE RESIN HAVING A MOLECULAR WEIGHT ABOVE 1000 AS DETERMINED BY THE STAUDINGER METHOD AND 50% TO 20% OF PLASTICIZER CONSISTING PRINCIPALLY OF MINERAL OIL WHICH IS NON-VIOLATILE AT ORDINARY ROOM TEMPERATURES, SAID RESIN AND PLASTICIZER HAVING A LIMITED INCOMPATIBILITY WITH EACH OTHER SUCH AS TO PRODUCE A CLOUD-LIKE SEPARATION, OR RESIN AND PLASTICIZER IN THE BINDER AT A TEMPERATURE BETWEEN 20* C. AND 70* C., SAID BINDER HAVING A CLOUD-LIKE SEPARATION OF RESIN AND PLASTICIZER RESULTING FROM THE LIMITED INCOMPATIBILITY OF RESIN AND PLASTICIZER CHARACTERIZED BY A CLOUD POINT BETWEEN 20* C. AND 70* C. WHEN THE CLOUD POINT IS DETERMINED BY HEATING THE BINDER UNTIL THE RESIN AND PLASTICIZER ARE IN SOLTUION AND NOTING THE TEMPERATURE AT WHICH THE BINDER BECOMES OPAQUE ON COOLING.