Use of water-soluble mixed polymers as a flowing medium and/or as a hardening retarder for refractory materials which contain aluminate cement
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United States of America Patent
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Feb 7, 2006
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N/A
app pub date -
Jul 8, 1999
filing date -
Jul 9, 1998
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Abstract
The use of a three-component water-soluble polymer comprising 5-90% by weight of a component a), preferably of the maleic acid, fumaric acid or itaconic acid type, 5-90% by weight of a component b) essentially from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, vinylsulfonic acid and vinylphosphonic acid, and 5-90% by weight of a component c) comprising acrylic acid, methacrylic acid, acrylamide or methacrylamide, as fluidizer for refractory compositions comprising alumina cement is described. The copolymer, which has a preferred molecular weight Mw of <50,000, can also be combined with further quality-improving additives such as silica, lime or soda and further customary additives for refractory compositions.
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