SILICE POREUSE MODIFIEE, SON PROCEDE DE FABRICATION ET SON UTILISATION DANS LES PEINTURES ET COMME VECTEUR DE PIGMENTS ET COLORANTS

• Main Authors: D HERBECOURT BRUNO, WERTH MICHAEL, JULIEN OLIVIER, LERMAT YVES
• Format: Patent
• Language: French
• Published: 30.10.1998
• Edition: 6
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOUNDS THEREOF; CORRECTING FLUIDS; DYES; FILLING PASTES; HUMAN NECESSITIES; HYGIENE; INKS; INORGANIC CHEMISTRY; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; PREPARATION OF CARBON BLACK; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS

L'invention concerne des silices poreuses dont les pores sont au moins partiellement remplis avec des résines polyamides. Elles sont utilisables comme additifs de peintures liquides, comme vecteurs de pigments et/ou colorants, comme agents anti-bloquant pour des films en matière oléfinique pliés ou enroulés et dans des préparations cosmétiques, pharmaceutiques et/ou dermatologiques. A silica, modified with a polyamide resin, having a pore volume between 0.4 and 2 ml/g, an absorption power, measured according to DIN ISO 787N of between 100 and 350g oil/100g silica, and a particle size between 0.5 and 150 mu m, is prepared by one or more polyamide monomer(s) being dissolved in aqueous or aqueous alcoholic solution, with the porous silica added in such a quantity that all of the solution is absorbed by the silica powder, the solvent is eliminated, and then the polyamide resins are polymerised. The modified silica may also be obtained by dry mixing at ambient temperature, solid polyamide monomers in powder form, with the untreated silica powder, then polymerising the monomers.