Patent GB-887247-A (GB)
Title: Soap compositions
Inventor: ATTERBY GUSTAF VILHELM FRED
IPC: C11D9/26
Filed: 1959-10-14
Abstract: A bactericidal aqueous soap composition comprises by weight (a) 8-30%, preferably 15-25%, of alkali metal soaps of C6-14 fatty acids; (b) 2-8%, preferably 3-5%, of alkali metal soaps of C16-20 fatty acids; (c) 1-6%, preferably 1,5-4% saturated C16-20 fatty acids; and (d) a sparingly soluble soap compatible bactericide, suitably in an amount of 0,1-3,5%, at least part of ingredients (c) and (d) being undissolved and held in stable suspension.  Soaps (a) and (b) are preferably at least partly present as potassium salts but the term "alkali metal" also embraces ammonium and organic substituted ammonium salts; soap (a) is suitably derived from palm kernel or coconut oil, and soap (b) from fatty acid of type (c), e.g. stearic acid. Bactericide (d) may be tetramethyl thiuram disulphide, 5:31:41-trichlorosalicylanilide, 3:5:41- tribromosalicylanilide, 3:5:31:41-tetrachlorosalicylanilide, or 3:4:41-trichlorocarbanilide, but is preferably bis-(3:5:6-trichloro-2-hydroxyphenyl) methane. Ingredients (a) and (d) both suitably have a particle size in suspension of 0,5-100m , preferably 10-60m , and (d) is most preferably present in amounts of 0,3-2%.  Sodium carboxymethyl cellulose, glycerol, cetyl alcohol, lanette wax, colour and perfume may also be incorporated.  The composition is suitably made by completely saponifying a mixture of fats or oils containing C6-14 fatty acids with a calculated excess of base, and then adding at 60 DEG -90 DEG C. a solution or suspension of the bactericide in a melt of the saturated C16-20 fatty acids (c) so as to leave the required excess of fatty acid (c) after all the base has been neutralized in forming soap (b), and finally cooling the mixture to 10 DEG -25 DEG C.  According to the Provisional Specification, 2-hydroxy-5-chlorbenz-31:41-dichloranilide may be used as the bactericide.ALSO:A bactericidal aqueous soap composition comprises, by weight, (a) 8-30%, preferably 15-25%, of alkali metal soaps of C6-14 fatty acids; (b) 2-8%, preferably 3-5%, of alkali metal soaps of C16-20 fatty acids; (c) 1-6%, preferably 1.5-4% saturated C16-20 fatty acids; and (d) a sparingly soluble soap compatible bactericide, suitably in an amount of 0.1-3.5%, and preferably 0.3-2%, at least part of ingredients (c) and (d) being undissolved and held in stable suspension. Soaps (a) and (b) are preferably at least partly present as potassium salts, but the term "alkali" also embraces ammonium and organic substituted ammonium salts; soap (a) is suitably derived from palm kernel or coconut oil and soap (b) from fatty acid of type (c), e.g. stearic acid.  Bactericide (d) may be tetramethyl thiuram disulphide, 5 : 31 : 41 - trichlorosalicylanilide, 3 : 5 : 41 - tribromosalicylanilide, 3 : 5 : 31 : 41-tetrachlorosalicylanilide, or 3 : 4 : 41-trichlorocarbanilide, but is preferably bis-(3 : 5 : 6-trichloro - 2 - hydroxyphenyl) methane; according to the Provisional Specification 2-hydroxy-5 - chlorbenz - 31 : 41 - dichloranilide may also be used.  (c) and (d) both suitably have a particle size in suspension of 0.5-100m .  Sodium carboxymethylcellulose, glycerol, cetanol, lanette wax, colour and perfume may also be present and a method of preparation is described (see Group III).