Modification of the surface chemistry of macromolecular species in the presence of a conjugated guanidine
The present invention relates to a method for preparing macromolecular species with a modified surface, comprising a step (e) in which macromolecular species (M), initially carrying -OH and/or -SH functions, are brought into contact with: a catalyst (C) carrying at least one conjugated guanidine fun...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The present invention relates to a method for preparing macromolecular species with a modified surface, comprising a step (e) in which macromolecular species (M), initially carrying -OH and/or -SH functions, are brought into contact with: a catalyst (C) carrying at least one conjugated guanidine function; and reactive species (E), comprising reactive groups including: (i) at least one group including an alpha,beta-unsaturated carbonyl group C=C-C=O and/or an alpha, beta-unsaturated thiocarbonyl group C=C-C=S; and/or (ii) at least one heterocyclic group comprising from 3 to 5 ring members, the group being selected from cyclic ethers, cyclic thioethers and aziridine rings; and/or (iii) at least one group selected from isocyanate -N=C=O or thioisocyanate -N=C=S groups, and trivalent groups of formula >C=CZ-, where Z is an electron-withdrawing group. The invention also relates to the macromolecular species with a modified surface that are obtained in this context. |
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