Composition adhesive pour milieu humide a base de copolymeres a blocs comportant au moins un bloc hydrophile

Adhesive composition for a humid medium based on block copolymers comprising at least one hydrophilic block

Abstract

The invention relates to a block copolymer which is produced by a controlled radical polymerisation, has an individual composition and structure and is used for adhesion in a humid medium The inventive copolymer comprises a continuous flexible and water repellent matrix (of elastomer nature) and a dispersed phase in the form of hydrophilic nanodomains. Said copolymer exhibits an excellent adhesion as a result of the structure thereof also in a very humid medium.
L'invention décrit l'utilisation dans l'adhésion en milieu humide d'un copolymère à blocs obtenu par polymérisation radicalaire contrôlée et présentant une structure et une composition particulières. Le copolymère de l'invention présente une matrice continue souple (à caractère élastomère) et hydrophobe et une phase dispersée sous la forme de nanodomaines hydrophiles. Grâce à cette structure le copolymère de l'invention a une excellente adhésion même en milieu très humide.

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