摘要 |
Gel formers and gels contain a) acidic aluminium phosphates, optionally in the form of reaction products with 0.01 to 4 mol of alkanolamines per mol of aluminium phosphate, and b) reaction products of boric acid with alkanolamines, a) and b) being present in a weight ratio of 100:55 to 100:0.5, calculated as solids.
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