Magnesium hydroxide solid solutions, their production method and use
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United States of America Patent
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Apr 6, 1999
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app pub date -
Mar 26, 1997
filing date -
Jun 2, 1995
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Abstract
A production method of a magnesium hydroxide solid solution, Mg.sub.1-x M.sup.2+ .sub.x (OH).sub.2 or a resin and/or rubber material having as its effective elements containing said solid solution as its flame retardant, characterized by having M.sup.2+ distributed unevenly in a high concentration in the vicinity of the surface of each crystal, in the magnesium solid represented by the formula Mg.sub.1-x M.sup.2+ .sub.x (OH).sub.2 wherein M.sup.2+ is at least one divalent metal ion selected from the group consisting of Mn.sup.2+, Fe.sup.2+, Ni.sup.2+, Cu.sup.2+, Zn.sup.2+ and x indicates a range of 0.001.ltoreq.x<0.5.
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