Stain resistant grout

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/28 (2006.01) C04B 26/10 (2006.01) C08G 18/08 (2006.01) C08G 18/79 (2006.01)

Patent

CA 2552436

Polymeric grout formulations comprising one or more urethane oligomers of at least two polymerized units comprising the reaction product of: (a) one or more polyfunctional isocyanate compounds; (b) one or more polyols; (c) one or more monoalcohols selected from the group consisting of fluorocarbon monoalcohols; and (d) one or more silanes. In another embodiment, the polymeric grout composition comprises an additive comprising an oligomer comprising at least two polymerized units, each said polymerized unit comprising a urethane group, and said oligomer being substituted with (i) one or more covalently bonded perfluoroalkyl groups, or one or more covalently bonded perfluoroheteroalkyl groups, and (ii) one or more covalently bonded silyl groups.

La présente invention a trait à des formulations de coulis à base de polymères comportant un ou des oligomères d'uréthanne d'au moins deux motifs polymérisés comprenant le produit réactionnel de : (a) un ou des composés d'isocyanate polyfonctionnels ; (b) un ou des polyols ; (c) une ou des monoalcools choisis parmi le groupe constitué de monoalcools de carbone fluoré ; et (d) un ou des silanes. Dans un autre mode de réalisation, la composition de coulis à base de polymères comporte un additif comprenant un oligomère comportant au moins deux motifs polymérisés, chaque dit motif polymérisé comportant un groupe uréthanne, et ledit oligomère étant substitué avec (i) un ou des groupes perfluoroalkyle à liaison covalente, ou un ou des groupes perfluorohétéroalkyle à liaison covalente, et (ii) un ou des groupes silyle à liaison covalente.

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