a suitable reactor the microemulsion is then diluted to 18 8 solids with the isoparaffinic solvent used above 41 9 parts of the above dmam solution is added to the reactor at a rate of 0 53 ml min with ample stirring subsequent to the addition the reaction is heated to 35 u00b0 c and held for 4 5 hours the mannich product is stored under refrigeration and has an sv of 3 8 cps 3 26 parts of alkylaryl polyethylene glycol ether aapeg are added to 100 parts of the mannich product at the rate of 0 1 ml min this mixture is then transferred to a parr series 4560 mini reactor and stirred the reactor is evacuated to 100 torr and heated to 30 u00b0 c 10 56 parts of methyl chloride gas are delivered at 30 psig upon completion of the methyl chloride charge the reactor is heated to 35 u00b0 c for 16 hours the reactor is then slowly evacuated to 100 torr and maintained for 30 minutes to strip excess methyl chloride the quaternary microemulsion product qmm is clear and stable with an sv of 1 61 cps examples 2 to 8 describe the standard viscosity measurements and ph measurements for a series of trialkylamines and their effect on the qmm from example 1 a summary of the ph of the qmm the ph of the inverted solution and the sv.