Antifoam composition

Claim 1

AN ANTIFOAM COMPOSITION WHICH CONSISTS ESSENTIALLY OF 1.5 TO 50 PERCENT BY WEIGHT OF A SILICONE-GLYCOL COPOLYMER HAVING THE GENERAL FORMULA (CH3)SIO)(CH3)2SIO)R((CH3)GSIO)YSI(CH3)3 WHEREIN X HAS AN AVERAGE VALUE FROM 6 TO 420, Y HAS AN AVERAGE VALUE FROM 3 TO 30, AND G IS A RADICAL OF THE STRUCTURE -D(OR)2A WHEREIN D IS AN ALKYLENE RADICAL CONTAINING FROM 1 TO 30 CARBON ATOMS, R IS COMPOSED OF ETHYLENE RADICALS AND RADICALS SELECTED FROM THE GROUP CONSISTING OF POPYLENE AND BUTYLENE RADICALS, THE AMOUNT OF ETHYLENE RADICALS RELATIVE TO THE OTHER ALKYLENE RADICALS BEING SUCH THAT THE RATIO OF CARBON ATOMS TO OXYGEN ATOMS IN THE TOTAL OR BLOCK RANGES FRON 2.3:1 TO 2.:1, Z HAS AN AVERAGE VALUE FROM 10 TO 100, AND A IS A CAPPING GROUP SELECTED FROM THE GROUP CONSISTING OF HYDROXY, ACYL, ETHER AND CARBONATE ESTER CAPPLING GROUPS; 2 5 TO 50 PERCENT BY WEIGHT OF POLYPROPYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE OF 1000 TO 200, 3.5 TO 50 PERCNT BY WEIGHT OF A GLYCOL COPOLYMER HAVING THE GENERAL FORMULA CH2=CH-D''M-(0C2H44)A(0H3H6)R'', WHERIN A AND B ARE INTEGERS GREATER THAN ZERO AND EACH HAS AN AVERAGE VALUE SUCH THAT THE COPOLYMER HAS AN AVERAGE MOLECULR WEIGHT IN THE RANGE OF 2000 TO 300,D'' IS AN ALKYLENE RADICAL CONTAINING FROM 1 TO 16 CARBON ATOMS, M IS ZERO OR ONE, AND R'' IS A CAPPING GROUP, SELECTED FROM THE FROUP CONSISTING OF HYDROXY, ACYL, ETHER AND CARBONATE ESTER CAPPING GROUPS; AND 4.40 TO 85 PERCENT BY WEIGHT OF WATER.