| 摘要 |
PURPOSE: To obtain toothpaste free from lowering of flavoring, containing a flavoring agent and unmilled precipitated alumina trihydrate having a definite intermediate particle size as an abrasive. CONSTITUTION: This toothpaste is obtained by including 0.8-1.0wt.% flavoring agent such as peppermint, spearmint or wintergreen oil and 20-60wt.% unmilled precipitated alumina trihydrate as an abrasive and as necessary, mixing these compound with sorbitol, sodium carboxymethylcellulose, sodium saccharin, benzoic acid, surfactant, water, etc., according to a conventional method. The intermediate particle size of alumina trihydrate is <30μm, preferably 5-20μm. Particle size distribution of alumina trihydrate particles specified by a ratio (d10 -d90 )/d50 is preferably <1.3 in order to obtain paste having proper viscosity.
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