Processes to produce water-dispersible polyester stabilized fluoroalkyl compositions
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United States of America Patent
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Feb 6, 2007
Grant Date -
Feb 17, 2005
app pub date -
Aug 12, 2003
filing date -
Aug 12, 2003
priority date (Note) -
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Abstract
A process is provided to produce an aqueous dispersion wherein the aqueous dispersion enhances the water and oil repellency of materials. The process comprises: 1) contacting at least one fluoroalkyl monomer, at least one water-dispersible polyester, water, and optionally an ethylenically unsaturated monomer to form a pre-emulsion; and 2) polymerizing the pre-emulsion in a polymerization zone in the presence of an initiator to produce the aqueous dispersion.In another embodiment, a process to produce an aqueous dispersion is provided. The process comprises: 1) contacting at least one fluoroalkyl monomer, at least one water-dispersible polyester, water, and optionally an ethylenically unsaturated monomer to form a pre-emulsion; 2) shearing the pre-emulsion to produce a mini-emulsion; and 3) polymerizing the miniemulsion in a polymerization zone to produce the aqueous dispersion.
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