PURPOSE: To obtain a biodegradable powder soap at a low cost through a small number of steps without requiring any catalyst and without causing environmental pollution by spray-drying a slurry neat soap obtd. from a naturally occurring biodegradable fatty acid and an inorg. alkali.
CONSTITUTION: At the outset, a purely naturally occurring biodegradable fatty acid (pref. a fatty acid comprising 50 to 90 wt.% distilled palm oil fatty acid and 10 to 50 wt.% distilled coconut oil fatty acid) is reacted with an inorg. alkali (pref. caustic soda) to obtain a slurry neat soap. The soap is then spray dried by means of a spray drier to obtain the contemplated product. Pref., the spray drying is carried out by a method wherein a spray nozzle having a diameter of 0.5 to 5 mm is provided, the neat soap is fed by spraying at 2 to 30 atm while maintaining the neat soap at 60 to 100°C into a spray drier equipped with a spray hole having a trapezium shape, and, in addition, hot air is blown at an air pressure of 1 to 5 atom into the drier in a direction opposite to the direction of the neat soap ejected from the spray nozzle.
EDEICHIYA WARUMAN
SHISHISU
CHIYAN TSUAN TEN
| JPH01271500A | 1989-10-30 | |||
| JPS4959803A | 1974-06-11 | |||
| JPH06287599A | 1994-10-11 | |||
| JPS5074604A | 1975-06-19 | |||
| JPS52133166A | 1977-11-08 | |||
| JPS60500915A | 1985-06-20 |
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