Hydrophobic, salt-like structured silicate

Details Hydrophobic, salt-like structured silicate Hydrophobic, salt-like structured silicate

C - Chemistry, Metallurgy

09

C

C09C 1/42 (2006.01) G03G 9/097 (2006.01)

Patent

CA 2566386

A salt-like, hydrophobic structured silicate is disclosed. The cation of the salt-like structured silicate is a low-molecular organic cation or a combination thereof with an NH4 +, H3O+, alkali metal, alkaline earth metal, earth metal and/or transition metal ion. The anion of the salt-like structured silicate is an island, ring, group, chain, band, layer or tectosilicate, or a combination thereof. The structured silicate is produced by (a) reacting a structured silicate whose cation is an NH4 +, H3O+, alkali metal, alkaline earth metal, earth metal and/or transition metal ion or a combination thereof, and whose ion is an island, ring, group, chain, band, layer or tectosilicate, or a combination thereof, in an aqueous dispersion with a low-molecular organic cation; by (b) adding to and intensively blending with the aqueous structured silicate dispersion a hydrophobic compound from the group of waxes and metal soaps, in a quantity ranging from 0.2 to 200 % by weight of the salt- like structured silicate in step (a), before, during and/or after step (a) is carried out; and by (c) optionally removing, drying and isolating in the form of a powder the salt-like, hydrophobic structured silicate produced during step (b).

L'invention concerne un silicate structural salin rendu hydrophobe. Le cation du silicate structural salin est un cation organique de faible poids moléculaire ou une combinaison dudit cation et de NH4 +, H3O1, d'un ion de métal alcalin et/ou d'un ion de métal alcalino-terreux et/ou d'un ion de métal de transition. L'anion du silicate structural salin est un nésosilicate, un cyclosilicate, un sorosilicate, un inosilicate, un silicate en bandes, un phyllosilicate ou un tectosilicate ou une combinaison de ces différents silicates. Ledit silicate structural salin est obtenu de la manière suivante: (a) faire réagir un silicate structural dont le cation NH4 +, H3<SP>O+</SP> est un ion de métal alcalin, un ion de métal alcalino-terreux et/ou un ion de métal de transition ou une combinaison desdits ions et dont l'anion est un nésosilicate, un cyclosilicate, un sorosilicate, un inosilicate, un silicate en bandes, un phyllosilicate ou un tectosilicate ou une combinaison de ces différents silicates, en dispersion aqueuse avec un cation organique de faible poids moléculaire et (b) ajouter, avant, pendant et/ou après la fin de l'étape (a), un composé hydrophobe du groupe des cires et des savons métalliques, à la dispersion aqueuse du silicate structural, par mélange intime, dans une quantité comprise entre 0,2 et 200 % en poids par rapport au silicate structural salin, et (c) éventuellement libérer le silicate structural salin rendu hydrophobe du milieu liquide, le sécher et l'isoler sous forme pulvérulente.

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