Patent ID: 8586143

Claim:
A method for grafting hollow or solid composite capsules onto a support, said method comprising the following steps: a) optionally preparing the capsules so as to adapt a lipophilic/hydrophilic character of a capsule membrane depending on the nature of the support; b) functionalising the membrane of the capsules by grafting a functionalization compound selected from the group consisting of: ethylenediamine, diethylenetriamine, triethylenetetraamine, tetraethylenepentamine, tris-amino-ethyl amine and poly(oxyalkylene)amines; c) activating the functionalised capsules, the support, or both the functionalized capsules and the support, by grafting reactive groups from an activation compound selected from the group consisting of: α-bromo-acrylic acid, adipic acid, 2,4,6-trichlorotriazine and dichloroquinoxaline, said reactive groups being able to form covalent bonds with other reactive groups present at a surface of the support and/or the functionalised capsules; d) contacting the functionalised capsules with the support from step c) and grafting the capsules to the support by forming covalent bonds between said capsules and said support; and e) recovering and rinsing the support comprising composite capsules grafted to the support by covalent bonding.