The scale inhibition composition may comprise: a a first acrylic acid polymer having an average molecular weight of from about to about ; b a second acrylic acid polymer having an average molecular weight of from about to about ; c an aminocarboxylic acid selected from methylglycine diacetic acid MGDA , glutamic acid diacetic acid GLDA , diethylene triamine pentaacetic acid DTPA , hydroxyethyl ethylene diamine triacetic acid HEDTA , ethylenediaminetetraacetic acid EDTA , and a combination thereof; and d a phosphonic acid selected from 1,1-diphosphonic acid HEDP , amino tris methylenephosphonic acid ATMP , ethylenediamine tetra methylene phosphonic acid EDTMP , tetramethylenediamine tetra methylene phosphonic acid TDTMP , hexamethylenediamine tetra methylene phosphonic acid HDTMP , diethylenetriamine penta methylene phosphonic acid DTPMP , and a combination thereof. Suitable oxygen-based bleaches are the peroxygen bleaches, such as sodium perborate tetra- or monohydrate , sodium carbonate or hydrogen peroxide. Clariant Wetting-Agents Document 7 pages. The formulations were added at a determined dosing amount e. Preferably, the weight ratio of the first polymer to the second polymer is from about 1.
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