DETERGENT FOR INTERNAL CLEANING OF EQUIPMENT IN FOOD INDUSTRY Russian patent published in 2014 - IPC C11D1/66 C11D1/94 C11D3/04 

FIELD: chemistry.

SUBSTANCE: described is a detergent which contains an alkali metal hydroxide, a dye and water, and additionally a tetrasodium salt of oxyethylenediphosphonic acid, a salt of ethylenediaminotetraacetic acid, sodium gluconate, an antifoaming polydimethylsiloxane liquid, a compound of the type RO-(CHR'CHR'-O)_nH, where R is a linear or branched alkyl substitute with backbone chain length of C₁-C₄, R' is H, CH₃, n ranges from 1 to 4, with the following ratio of components, wt %: alkali metal hydroxide - 20-45%; tetrasodium salt of oxyethylenediphosphonic acid - 0-5%; salt of ethylenediaminotetraacetic acid - 1-5%; sodium gluconate - 2-10%; antifoaming polydimethylsiloxane liquid - 0,2-1%; compound of the type RO-(CHR'CHR'-O)_nH, where R is a linear or branched alkyl substitute with backbone chain length of C₁-C₄, R' is H, CH₃, n ranges from 1 to 4 - 3-10%; dye 0.05-0.5%; water - the balance.

EFFECT: reduced foaming, low cost and high capacity for binding water hardness salts.

6 cl, 3 ex