Salts of 5-sulfoisophthalic acid and method of making same
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United States of America Patent
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Jul 8, 2014
Grant Date -
Aug 15, 2013
app pub date -
Aug 15, 2012
filing date -
Aug 16, 2011
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Abstract
This invention relates to methods for the production of various metal salts of 5-sulfoisophthalic acid including those where the metal cation is selected from the group consisting of silver (I), sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, barium, manganese (II), iron (II), cobalt (II), nickel (II), copper (I), copper (II), zinc, yttrium, and cadmium. The methods utilize a solvent system that comprises acetic acid or water or a mixture of both. The invention also encompasses the various metal salts of 5-sulfoisophthalic acid.
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