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Dimensionally stable alkaline cleansing agents of low density, and a process for their preparation

  • US 4,915,865 A
  • Filed: 06/16/1988
  • Issued: 04/10/1990
  • Est. Priority Date: 06/30/1987
  • Status: Expired due to Fees
First Claim
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1. A process for the preparation of a dimensionally stable alkaline cleansing agent of low density, said agent comprising2 to 50% by weight of alkali metal phosphate,2 to 50% by weight of a silicate and1 to 60% by weight of alkali metal hydroxide,alkali metal carbonate or bicarbonate or mixtures thereof,which process comprises foaming 0.25 to 10% by weight, on the same weight basis as the listed ingredients a phosphoric acid partial ester, selected from the group consisting of phosphoric acid monoester, phosphoric acid diester or mixtures thereof having been obtained by reaction of a phosphorylating agent with an organic hydroxy compound, with water in a weight ratio of (1:

  • 2) to (1;

    80), using intensive stirring, incorporating into the foam further components selected from alkali metal phosphate, a silicate, alkali metal hydroxide, alkali metal carbonate and alkali metal bicarbonate, using stirring and kneading, respectively, converting the resulting mixture to moldings and allowing the moldings to set for 0.5 to 15 hours.

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