this solution, applied by brush, spray, or dipping, will leave a thin film which is impervious to oil and grease. applied to paper or fiber containers, it will enable them to retain oils and greases sugar/0.6 caustic soda/0.1 water/90.5 sodium salicylate/0.2 glycerin/2.0 starch/6.6
配制方法:
the caustic soda is dissolved in the water. then the starch is made into a thick paste by adding a portion of this solution. the paste is then added to the water. the resulting mixture is placed on a water bath and heated to about 85℃, until all the starch granules have broken. the temperature is maintained about 1/2 hour longer at 85℃. the other substances are then added and thoroughly mixed. the composition. less water may be used if applied hot and then a thcker coating will result.
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