Grafting process, ensuring waterproofing, of a polymeric material by a fluorinated monomer and material obtained thereby
AssigneeInstitut Textile de France
InventorsJacques Poulenard, Louis Gavet, Roger Chatelin, Annie Giorgio
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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.
Claims9
A process for cografting a polymeric material including the steps of:
- (a) forming an aqueous emulsion by adding a fluorinated monomer and a graftable derivative of morpholine in the presence of at least one surface-active agent and mechanically stirring,
- (b) creating free radicals on the material by activation,
- (c) impregnating the material with said aqueous emulsion containing the fluorinated monomer and the graftable derivative of morpholine.
A grafted polymeric material comprising polymerized fluorinated groups and morpholine groups into the polymeric material.
Dependencies are inferred from the claim text.