Process for hydrophilicizing the surface of polymeric...

Details Process for hydrophilicizing the surface of polymeric... Process for hydrophilicizing the surface of polymeric...

C - Chemistry, Metallurgy

08

J

C08J 7/16 (2006.01)

Patent

CA 2242090

Disclosed is a process for hydrophilicizing a surface of a polymeric substrate by free-radical polymerization of a hydrophilic vinyl monomer, wherein the substrate is treated beforehand with a solution of a macroinitiator having a free-radical-forming group in a side chain. The macroinitiator is preferably a reaction product of a copolymer of a C3-C40 olefin and an unsaturated carboxylic acid with an alkyl hydroperoxide. If desired, the hydrophilic vinyl monomer may be used together with a crosslinking vinyl monomer which has 2 or more olefinic double bonds and which may additionally contain a hydrophilic group.

Divulgation d'un procédé pour rendre hydrophile une surface d'un substrat polymérique par polymérisation d'un monomère hydrophile vinylique, où le substrat est traité préalablement avec une solution d'un macro-initiateur possédant un groupe générant un radical libre dans une chaîne latérale. Le macro-initiateur est de préférence un produit de réaction d'un copolymère d'une oléfine C3-C40 et d'un acide carboxylique insaturé avec un hydroperoxyde d'alkyle. Si on le souhaite, il est possible d'utiliser le monomère vinylique hydrophile avec un monomère vinylique réticulant, possédant 2 ou plusieurs doubles liaisons oléfiniques et pouvant renfermer en plus un groupe hydrophile.

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