ES397948A1 - Procedure for the manufacture of stable detergent compositions. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Process for preparing stable detergent compositions, containing sodium perborate and products labile to the action of oxidants, characterized by comprising the following operations: A) cosulfonate the straight chain alkylbenzene of 10 to 14 carbon atoms, with a content of 2 to 12% of phenyldecades, of 25 to 40% of phenylundecanes, of 30 to 40% of phenyldodecanes, of 15 to 30% of phenyltridecanes and from zero to 5% of phenyltetradecanes, with a molecular weight of 238 to 245, and with a total content of 2-phenyl-alkane isomers of less than 20%, with toluene by means of sulfuric anhydride diluted in air in a concentration between 15 and 15. 6 and 19.3% by weight, the toluene concentration being between 0.5 and 18% by volume, and preferably 25 to 11%. B) mix the sodium perborate with a granular detergent composition dried countercurrently with hot air, and that at the time of mixing said detergent granulate is at a temperature between 55-95º c, preferably between 65-75º c, and especially between 68-70º c, to produce the melting and surface inactivation of sodium perborate in order to stabilize it, the process being applied in a ratio between the sodium perborate and the dried granular detergent from 0.5: 100 to 50: 100, and preferably from 5: 100 to 35 : 100 C) then mix those heat-labile products that are sensitive to the action of unstabilized sodium perborate. Among them are: perfumes, in a proportion of 1 to 2.5 per thousand; bacteriostats, in a proportion of 0.01 to 0.5 percent: and enzymes, in a proportion of 0.001 to 5 percent, especially proteases, amylases and lipases. (Machine-translation by Google Translate, not legally binding)