Particulate carbonates and their preparation and use in breathable film
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United States of America Patent
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Jun 13, 2006
Grant Date -
Jul 29, 2004
app pub date -
Nov 26, 2003
filing date -
May 5, 2000
priority date (Note) -
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Abstract
The present invention is a method of producing a breathable film including producing an inorganic filler by treating particles of an inorganic particulate material comprising an alkaline earth metal carbonate compound by reaction with a hydrophobizing surface treatment agent comprising one or more aliphatic carboxylic acids having at least 10 chain carbon atoms to produce a hydrophobic coating on the particles including a classification step to result in an inorganic filler having a reduced level of interfering particles. The invention is also breathable polymeric films made using the novel filler.
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