Treatment method, which promotes the removal of dirt, for...

D - Textiles – Paper – 06 – M

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D06M 23/08 (2006.01) C11D 1/02 (2006.01) C11D 1/66 (2006.01) C11D 1/90 (2006.01) C11D 1/94 (2006.01) C11D 3/00 (2006.01) C11D 3/37 (2006.01) C11D 17/00 (2006.01) D06M 11/00 (2006.01) D06M 13/46 (2006.01) D06M 15/263 (2006.01) D06M 15/285 (2006.01) D06M 15/356 (2006.01) D06M 15/61 (2006.01)

Patent

CA 2450264

The invention relates to a treatment method, which promotes the removal of dirt, for the surfaces of textiles and non-textiles. According to said method, cationically modified, hydrophilic nanoparticles, based on cross-linked polymers, are applied from an aqueous dispersion to the surface of the materials. Said cross-linked polymers consist of (a) between 60 and 99.99 wt. % of one or more ethylenically unsaturated monomers containing carboxyl groups, or the salts thereof, (b) between 0 and 40 wt. % of one or more water- insoluble, monoethylenically unsaturated monomers, (c) between 0.01 and 30 wt. % of one or more ethylenically polyunsaturated monomers, (d) between 0 and 25 wt. % of one or more monomers containing sulphonic acid and/or phosphonic acid, or the salts thereof, (e) between 0 and 30 wt. % of one or more water- soluble, non-ionic monomers. The dispersion of the hydrophilic nanoparticles can be stabilised with anionic, non-anionic and/or betainic emulsifiers and/or protective colloids. The hydrophilic nanoparticles have a particle size of between 10 and 2 µm and are modified cationically by covering their surface with one or more cationic polymers, one or more polyvalent metallic ions and/or one or more cationic surfactants.

L'invention concerne un procédé de traitement de la surface de matières textiles et non textiles. Ce procédé consiste à appliquer sur la surface desdites matières des nanoparticules hydrophiles cationiquement modifiées et à base de polymères réticulés composés de (a) 60 à 99,99 % en poids d'au moins un monomère éthyléniquement insaturé contenant des groupes carboxyle ou de leurs sels, (b) 0 à 40 % en poids d'au moins un monomère monoéthyléniquement insaturé insoluble dans l'eau, (c) 0,01 à 30 % en poids d'au moins un monomère éthyléniquement poly-insaturé, (d) 0 à 25 % en poids d'au moins un monomère contenant des groupes d'acide sulfonique et/ou d'acide phosphonique ou de leurs sels, (e) 0 à 30 % en poids d'au moins un monomère non ionique soluble dans l'eau. On peut stabiliser la dispersion de nanoparticules hydrophiles par des émulsifiants et/ou colloïdes de protection anioniques, non ioniques et/ou bétaïniques. Les nanoparticules hydrophiles ont une granulométrie de 10 nm à 2 µm et on les modifie cationiquement en garnissant leur surface d'au moins un polymère cationique, d'au moins un ion métallique polyvalent et/ou d'au moins un tensio-actif cationique.

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