C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 230/08 (2006.01) C08F 275/00 (2006.01) C14C 11/00 (2006.01)
Patent
CA 2587517
The invention relates to an aqueous polymeric dispersion comprising polymeric particles bearing silane and carboxylic groups, the said carboxylic groups being possible to be either in the form of acid or of its salt with monovalent cation, the said polymer particles being crosslinked by the presence of at least one multivalent metal compound selected from: oxides, hydroxides or its salts or complexes, with the Tg of the said polymer being not higher than 0~C. The invention also relates to a preparation process, to a composition for leather treatment comprising the said dispersion, to its use in the treatment of leather, in particular for embossed and automotive leather, and to a leather treated with the said composition.
La présente invention concerne une dispersion aqueuse de polymère comprenant des particules polymères portant des groupements silane et carboxyliques. Lesdits groupements carboxyliques peuvent être soit sous forme acide, soit sous forme d~un sel de cation monovalent. Les particules polymères sont réticulées du fait de la présence d~au moins un composé métallique multivalent sélectionné parmi : les oxydes, les hydroxydes, leurs sels ou leurs complexes, la Tg dudit polymère étant inférieure ou égale à 0 °C. La présente invention concerne également un procédé de préparation, une formule pour le traitement du cuir incluant ladite dispersion, son utilisation dans le traitement du cuir, en particulier pour le cuir imprimé et le cuir employé dans l~automobile, ainsi qu~un cuir traité par ladite formule.
Lugli Mario
Saija Leo
Cray Valley Italia S.r.l.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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