| abstract |
The present invention relates to a stable water-in-oil emulsion system. The water-in-oil emulsion system of the present invention comprises 1 to 5% by weight of a water-in-oil emulsifier based on the total amount of the aqueous phase, oil phase and system, and 0.1 to 0.1 based on the total amount of the system. 20% by weight solid powder and 0.01-2% by weight of cationic surfactant, based on the total amount of system, where the cationic surfactant has the general formula R 1 R 2 R 3 R 4 N + X - a cationic surfactant of a quaternary ammonium salt represented by the formula, R 1, R 2, R 3 and R 4 are each independently or C 1 -C 28 alkyl groups, C 1 -C 4 acyl groups, C 2 -C 4 acyloxy groups, are selected from C 1 -C 28 alkyl group substituted with a hydroxy group or a C 2 -C 4 alkenyl group, X - is any suitable anion is there. [Selection figure] None |