| 摘要 |
A hard toilet soap is obtained from a soap containing at least 25 per cent and preferably 30 per cent or more of saponified lower fatty acids or topped lower fatty acids and superfatted with 5 to 100 per cent of fatty acids calculated on the bound fatty acids, by reducing the water content of such a soap to less than 10 per cent and preferably less than 9 per cent. The soaps prepared according to Specification 648,722 and containing the preferred proportion of saponified lower fatty acids are cut up into chips, dried to the desired water content and then milled and plodded in the usual manner. The soaps are made from fatty oils or fatty acids containing the preferred proportion of fats, fatty oils or fatty acids of the coconut oil group, viz. coconut oil, palm kernel oil, murumuru fat, cohune oil, babassu oil or their corresponding fatty acids, all of which contain large proportions of lauric acid, which oils or fatty acids may be topped, i.e. have the caproic, caprylic and capric acids or their glycerides removed. In the many examples given, the above oils or fatty acids are used mixed with tallow, palm oil fatty acids, corn oil, palm oil, ground nut oil fatty acids, or stearic acid. The fatty acids for superfatting as exemplified comprise palm oil fatty acids, stearic acid, topped coconut fatty acids, hydrogenated tallow fatty acids, palm kernel oil fatty acids, hydrogenated whale oil fatty acids, hydrogenated cottonseed oil fatty acids mixed with cocoa butter fatty acids, hydrogenated palm oil fatty acids, hydrogenated ground nut oil fatty acids mixed with stearic acid, and hydrogenated linseed oil fatty acids. The soaps may also contain as toughening agents, saponified rosin, hydrogenated rosin, or castor oil.
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