| 配方類型： |
COSMETICS AND DRUGS |
| 配方說明： |
Emollient Skin Cream (Aerosol) |
| 配方組成： |
Atlas "G-1425"/0.9
Castor Oil AAA Grade/70.5
Lanolin U.S.P. Anhydrous/19.1
Water/9.5 |
| 配制方法： |
The water and G-1425 are mixed and heated to 150F, then slowly added with agitation to the mixture of castor oil and lanolin which has been heated to 160F. After emulsification is complete, the product is filled into cans. After the valve has been crimped in place, ten percent by weight of dichlorodifluoromethane is pressure-filled into the container. Although the foam stability of this product is poor, this does not interfere with its functioning.
Where it is necessary or desirable to have a water-inn-oil foaming aerosol emulsion with a good stable foam, it can be accomplished in a circuitous manner. If the propellent is first emulsified in water using a suitable emulsifier and then pressure-filled into the water-in-oil emulsion, there results a system which can be designated as an oil-in-water/water-in-oil emulsion. The dispersed phase is droplets of water and droplets of propellent emulsified in water (oil-in-water phase). The continuous phase is the oil which now does not contain the propellent. Al |
|
