Polymer compositions containing phosphates
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United States of America Patent
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Aug 30, 2011
Grant Date -
May 27, 2010
app pub date -
Nov 20, 2009
filing date -
Nov 21, 2008
priority date (Note) -
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Abstract
In a second aspect of the present invention, there is provided a mixture comprising the polymer composition of the first aspect described above and one or more matrix resin.In a third aspect of the present invention, there is provided a process for making a polymer composition comprising the steps of providing a multistage polymer latex, coagulating said multistage polymer latex, mixing said multistage polymer with an aqueous solution of an alkaline phosphate, and drying said multistage polymer to a water content of less than 1% by weight of water based on the dry weight of said multistage polymer, wherein said dried multistage polymer comprises 100 ppm or more, based on the dry weight of said multistage polymer, of phosphorous that is in the form of an alkaline phosphate.
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