Wax treated article and method of making
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United States of America Patent
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Aug 9, 2016
Grant Date -
Jul 23, 2015
app pub date -
Jan 21, 2014
filing date -
Jan 21, 2014
priority date (Note) -
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Abstract
Water swellable articles are treated with wax by applying a molten wax to the article, the wax having a kinematic viscosity of between about 0.1 cSt to 20 cSt at 100° C., wherein the temperature of the article at the time of applying is about 40° C. to 200° C., with the proviso that the temperature is not less than 30° C. below the melting point of the wax. Using this method of treatment, swelling of the article in water is reduced by at least 25% compared to the same article treated with molten wax wherein the article is at ambient temperature at the time the wax is applied.
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