Composition for use in eliminating oil and grease smudges from offset printing mats and plates

Claim 1

A METHOD FOR RENDERING OIL AND GREASE SMUDGES PRESENT ON PLANOGRAPHIC MATS AND PLATES INCAPABLE OF ATTRACTING INK DURING THE PLANOGRAPHIC PROCESS COMPRISING INTIMATELY CONTACTING SAID SMUDGES WITH A COMPOSITION COMPRISING AS AN AQUEOUS PHASE 10-80 PARTS BY VOLUME OF A WATER-MISCIBLE ALIPHATIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL AND GLYCOLS, WATER AND 10-60 PARTS BY VOLUME OF A COLLOIDAL SOLUTION CONTAINING 1-15% BY WEIGHT OF SILICIC ACID IN WATEAR, SAID AQUEOUS PHASE HAVING A PH IN THE RANGE OF 3-5, AND AS A NON-AQUEOUS PHASES 10 ML. PER 100 ML. OF SOLUTION OF A PETROLEUM ETHER TRACTION HAVING A BOILING POINT WITHIN THE RANGE OF 300-420* F., SAID NON-AQUEOUS PHASES BEING DISPERSED THROUGHOUT SAID AQUEOUS PHASES IN THE FORM OF DROPLETS AS A RESULT OF AGITATION OF THE TWO PHASES TOGETHER AT THE TIME OF APPLICATION OF SAID COMPOSITION TO SAID MATS AND PLATES.