Grafting process, ensuring waterproofing, of a polymeric material by a fluorinated monomer and material obtained thereby
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United States of America Patent
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Feb 20, 1990
Grant Date -
N/A
app pub date -
Apr 14, 1988
filing date -
Apr 14, 1987
priority date (Note) -
Expired
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Abstract
The grafting reaction according to the invention occurs after having impregnated the polymeric material, on which were previously created free radicals by activation within an emulsion containing the fluorinated monomer and a graftable derivative of the morpholine. The preferred reagents are morpholinoethyl methacrylate and 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl methacrylate. The invention is applicable to the waterproofing of textile articles, particularly made of cotton, silk, linen. The material thus grafted is waterproof when cold, but when hot, it may be washed, dyed or printed by transfer.
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