Abstract: The disclosure is directed to a method for preparing an adhesive composition, in which an aqueous phase comprising a modified colloidal silica is mixed with an organic phase comprising one or more monomers in the presence of an initiator, wherein conditions are maintained such that polymerisation of the one or more monomers occurs to form an aqueous polymeric dispersion, wherein; (i) the aqueous polymeric dispersion comprises polymer particles with protective colloid on their surface; (ii) the modified colloidal silica comprises colloidal silica particles with at least one surface-bound hydrophilic organosilane moiety and/or comprises colloidal silica particles with at least one additional element on its surface, the element being able formally to adopt a +3 or +4 oxidation state; and (iii) the initiator is at least partially soluble in water.

Abstract: The present disclosure relates to a coating composition, in particular a cool roof or solar reflective coating composition, which comprises an organosilane-functionalised colloidal silica and hollow microspheres, wherein the organosilane-functionalised colloidal silica comprises silica particles with one or more organosilane moieties bound to their surface, and wherein the hollow microspheres comprise a polymeric shell. The present disclosure also relates to substrate coated with the coating composition, and to a method for making such a coating composition.

Abstract: The present disclosure relates to a pigment dispersion comprising silane-modified colloidal silica particles, an organic and/or inorganic pigment, a water-soluble thickening polymer in an amount of 0.1 wt. %, and water. The pigment dispersion is useful for tinting paint compositions, and exhibits excellent storage stability and washout resistance of the resulting coating. Another aspect of the present disclosure relates to a method for tinting a paint composition.

Abstract: The present disclosure relates to a method for preparing a coating composition, in which an aqueous phase comprising an organosilane-functionalised colloidal silica is mixed with an organic phase comprising one or more monomers in the presence of an initiator and a protective colloid, wherein conditions are maintained such that polymerisation of the one or more monomers occurs to form an aqueous polymeric dispersion, in which the aqueous polymeric dispersion comprises polymer particles with protective colloid on their surface; the organosilane-functionalised colloidal silica comprises colloidal silica particles with at least one surface-bound organosilane moiety; and the initiator is at least partially soluble in water.

Abstract: The disclosure is directed to a method for preparing an adhesive composition, in which an aqueous phase comprising a modified colloidal silica is mixed with an organic phase comprising one or more monomers in the presence of an initiator, wherein conditions are maintained such that polymerisation of the one or more monomers occurs to form an aqueous polymeric dispersion, wherein; (i) the aqueous polymeric dispersion comprises polymer particles with protective colloid on their surface; (ii) the modified colloidal silica comprises colloidal silica particles with at least one surface-bound hydrophilic organosilane moiety and/or comprises colloidal silica particles with at least one additional element on its surface, the element being able formally to adopt a +3 or +4 oxidation state; and (iii) the initiator is at least partially soluble in water.

Abstract: The present disclosure relates to a coating composition, in particular a cool roof or solar reflective coating composition, which comprises an organosilane-functionalised colloidal silica and hollow microspheres, wherein the organosilane-functionalised colloidal silica comprises silica particles with one or more organosilane moieties bound to their surface, and wherein the hollow microspheres comprise a polymeric shell. The present disclosure also relates to substrate coated with the coating composition, and to a method for making such a coating composition.

Abstract: Methylsilyl derivatized silica particles are disclosed. The methylsilyl derivatized silica particles have a methylsilyl content in a range of between 1-6 ?mol m?2 on a surface of the silica particles. Colloidal silica comprising the methylsilyl derivatized silica particles is also disclosed. Methods for the manufacture of the methylsilyl derivatized silica particles are disclosed. Kits for coatings comprising the methylsilyl derivatized silica particles are also disclosed.

Abstract: Methylsilyl derivatised silica particles are disclosed. The methylsilyl derivatised silica particles have a methylsilyl content in a range of between 1-6 ?mol m?2 on a surface of the silica particles. Colloidal silica comprising the methylsilyl derivatised silica particles is also disclosed. Methods for the manufacture of the methylsilyl derivatised silica particles are disclosed. Kits for coatings comprising the methylsilyl derivatised silica particles are also disclosed.

Abstract: The invention relates to a method of providing an aqueous paint dispersion comprising silanized colloidal silica particles and an acrylate-based binder wherein the weight ratio of SiO2 to acrylate-based binder on a dry basis ranges from 0.02 to 0.2, and wherein the content of SiO2, measured by XRF, in said dispersion ranges from 1.05 to 7.5 wt %, wherein silane groups present in the silanized colloidal silica particles are derived from silanes containing an epoxy group, glycidoxy group, glycidoxypropyl group, ureido-based silanes, methacrylamido silanes, mercapto silanes, and combinations thereof. The invention also relates to the use thereof.

Abstract: The present invention relates to a method of producing a dispersion comprising a) mixing an aqueous dispersion of silanized colloidal silica particles with at least one organic compound containing at least two hydroxyl groups to provide an aqueous dispersion of silanized colloidal silica particles and said at least one organic compound, wherein the mixing is performed in the substantial absence of any monofunctional alcohol b) withdrawing water from the formed aqueous dispersion until the remainder of water in the dispersion is below about 10 wt %. The invention also relates to a dispersion obtainable therefrom and the use of the dispersion.

Abstract: The present invention relates to a coating composition comprising: a) silanized colloidal silica particles; b) alkyd-containing binder; c) a carrier fluid, wherein the coating composition is essentially free from a cobalt-based drier. The present invention also relates to a method of producing a coating composition and the use of such coating composition for coating of a substrate.

Abstract: The present invention relates to a method of producing an aqueous dispersion of silanized colloidal silica particles comprising mixing in an aqueous medium a) at least one silane compound containing an epoxy-functionality, b) at least one silane compound having no epoxy-functionality capable of modifying colloidal silica particles; and c) colloidal silica particles in any order to form an aqueous dispersion of silanized colloidal silica particles containing silane compounds originating from a) and b). It also relates to a dispersion obtainable by said method and to the use thereof in coating applications.

Abstract: The invention relates to a method of providing an aqueous paint dispersion comprising silanized colloidal silica particles and an acrylate-based binder wherein the weight ratio of SiO2 to acrylate-based binder on a dry basis ranges from 0.02 to 0.2, and wherein the content of SiO2, measured by XRF, in said dispersion ranges from 1.05 to 7.5 wt %, wherein silane groups present in the silanized colloidal silica particles are derived from silanes containing an epoxy group, glycidoxy group, glycidoxypropyl group, ureido-based silanes, methacrylamido silanes, mercapto silanes, and combinations thereof. The invention also relates to the use thereof.

Abstract: The present invention relates to a coating composition comprising: a) silanized colloidal silica particles; b) alkyd-containing binder; c) a carrier fluid, wherein the coating composition is essentially free from a cobalt-based drier. The present invention also relates to a method of producing a coating composition and the use of such coating composition for coating of a substrate.

Abstract: The present invention relates to a method of producing a dispersion comprising a) mixing an aqueous dispersion of silanised colloidal silica particles with at least one organic compound containing at least two hydroxyl groups to provide an aqueous dispersion of silanised colloidal silica particles and said at least one organic compound, wherein the mixing is performed in the substantial absence of any monofunctional alcohol b) withdrawing water from the formed aqueous dispersion until the remainder of water in the dispersion is below about 10 wt %. The invention also relates to a dispersion obtainable therefrom and the use of the dispersion.

Abstract: The present invention relates to a method of producing an aqueous dispersion of silanized colloidal silica particles comprising mixing in an aqueous medium a) at least one silane compound containing an epoxy-functionality, b) at least one silane compound having no epoxy-functionality capable of modifying colloidal silica particles; and c) colloidal silica particles in any order to form an aqueous dispersion of silanized colloidal silica particles containing silane compounds originating from a) and b). It also relates to a dispersion obtainable by said method and to the use thereof in coating applications.

Abstract: A process for primer coating steel which is intended to be fabricated and overcoated, in which process the steel is primer coated with a primer coating comprising a silica binder. The binder comprises alumina-stabilized aqueous silica sol and, optionally, a minor amount of alkali metal silicate. The binder has a SiO2/M2O mole ratio, wherein M represents the total of alkali metal and ammonium ions, of at least 6:1. After the primer coating has dried to the extent that it is touch dry, it is optionally treated with a solution which increases the film strength of the primer coating.

Abstract: Coating composition suitable for coating a metal, preferably steel, substrate which is intended to be fabricated and overcoated, said composition comprising: i) zinc powder and/or a zinc alloy and ii) a modified silica sol comprising colloidal silica particles modified with 6-40 wt % of one or more silane compounds, based on the combined dry weight of silane compound(s) and colloidal silica particles, and being obtainable by adding said silane compound(s) to a silica sol with a rate of not more than 20 silane molecules per nm2 colloidal silica surface per hour. This coating composition has a relatively long pot life, good white rust resistance, and good film properties.