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1. WO1989000598 - POWDER COATINGS

Publication Number WO/1989/000598
Publication Date 26.01.1989
International Application No. PCT/AU1988/000246
International Filing Date 07.07.1988
IPC
C09D 5/03 2006.1
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
5Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
03Powdery paints
CPC
C09D 5/034
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
5Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced
03Powdery paints
033characterised by the additives
034Charge control agents
Applicants
  • ICI AUSTRALIA OPERATIONS PROPRIETARY LIMITED [AU]/[AU]
Inventors
Agents
  • DAVY, John, R.
Priority Data
PI 327522.07.1987AU
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) POWDER COATINGS
(FR) ENDUITS A BASE DE POUDRES
Abstract
(EN) Powder coatings may be given tribo-charging characteristics by the addition thereto of an additive which comprises aluminium oxide and/or hydroxide which has been sheared such that the additive resulting therefrom is a fine, essentially aggregate-free powder which comprises at least 5 % by weight of particles of maximum particle size 0.2 micrometres. A preferred way of achieving the particle size requirement is to add to the aluminium oxide/hydroxide prior to shearing a proportion of a fine particle extender of maximum particle size 0.2 um. The preferred extender is fumed silica. The additive is simply added to any powder coating composition in a quantity sufficient to confer on it the desired degree of tribo-charging characteristics.
(FR) On peut conférer des caractéristiques de charge tribologique à des enduits à base de poudres en y ajoutant un additif qui comprend de l'oxyde et/ou de l'hydroxyde d'aluminium qui a été cisaillé, de sorte que l'additif qui en résulte constitue une fine poudre essentiellement exempte d'aggrégats qui contient au moins 5 % en poids de particules dont la granulométrie maximum est de 0,2 micromètres. Un moyen préféré pour obtenir la granulométrie désirée consiste à ajouter à l'oxyde/hydroxyde d'aluminium avant le cisaillement une certaine proportion d'un diluant de particules fines dont la granulométrie maximum est de 0,2 m$g(m). Le diluant préféré est constitué par de la silice fumée. L'additif est simplement ajouté à n'importe quelle position d'enduction à base de poudres en une quantité suffisante pour lui conférer le degré désiré de caractéristiques de charge tribologique.
Related patent documents
NO19891079This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.
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