Organopolysiloxane-halofluorocarbon hydraulic fluid

Claim 1

A LIQUID COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF (1) FROM 30 TO 60 PERCENT BY WEIGHT OF AN ALIPHATIC HALOFLUOROCARBON HAVING THE EMPIRICAL FORMULA CAHBXDFD WHERE A IS A INTERGER FROM 4 TO 5 INCLUSIVE B IS AN INTEGER FROM 0 TO 1 INCLUSIVE, C IS AN INTEGER FROM 4 TO 7 INCLUSIVE, D IS AN INTEGER FROM 2 TO 6 INCLUSIVE, THE SUM OF B+C+D HAVING A MINIMUM VALUE OF 8 AND A MAXIMUM VALUE OF 2A+2, AND X REPRESENTS AN ATOM OF THE GROUP CONSISTING OF C1 AND BR ATOMS, SAID HALOFLUOROCARBON HAVING A BOILING POINT OF AT LEAST 150* C. AT ATMOSPHERIC PRESSURE, (2) FROM 0 TO 15 PERCENT BY WEIGHT INCLUSIVE OF AN ALKYL DIESTER OF AN ALIPHATIC DISCARBOXYLIC ACID HAVING FROM 4 TO 10 INCLUSIVE CARBON ATOMS IN THE CHAIN EXCLUSIVE OF THE CARBOXYLIC GROUPS, THE ALKYL ESTER GROUPS CONTAINING FROM 2 TO 10 CARBON ATOMS INCLUSIVE, (3) FROM 25 TO 70 PERCENT BY WEIGHT OF A LIQUID ORGANOPOLYSILOXANE CONTAINING REPEATING UNITS OF THE FORMULA (RR''SIO) WHERE R AND R'' ARE SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS OF FROM 1 TO 7 CARBON ATOMS INCLUSIVE AND HALOGENATED MONOVALENT HYDROCARBON RADICALS OF FROM 1 TO 7 CARBON ATOMS INCLUSIVE, SAID RADICALS BEING FREE OF ACETYLENIC LINKAGES, FROM 80 TO 100 INCLUSIVE MOLAR PERCENT OF THE ORGANIC RADICALS IN THE POLYMER BEING METHYL, AND SAID SILOXANE HAVING AN AVERAGE DEGREE OF SUBSTITUTION OF FROM 1.9 TO 2.3 ORGANIC RADICALS ATTACHED TO SILICON PER ATOM (4) FROM 0.043 TO 0.86 PERCENT BY WEIGHT OF AN ACID ANHYDRIDE SELECTED FROM THE GROUP CONSISTING OF ALKYL SUCCINI-, ALKENYL SUCCINIC-, ALKLY GLUTARIC-, AND ALKENYL GLUTARIC ANHYDRIDES, THE ALKYL AND ALKENYL RADICALS IN SAID ACID ANHYDRIDE CONTAINING FROM 8 TO 23 INCLUSIVE CARBON ATOMS, (5) FROM 0.043 TO 0.86 PERCENT BY WEIGHT OF AN ALKYL DIESTER OF THE AFORESAID ACID ANHYDRIDES IN WHICH THE ALCOHOLIC RESIDUAL RADICAL CONTAINS FROM 1 TO 4 INCLUSIVE CARBON ATOMS, AND (6) FROM 0.14 TO 0.28 PERCENT BY WEIGHT OF BENZOTRIAZOLE.