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1. GB2374302 - Power material for electrostatic application to a substrate and electrostatic application of the powder material to a substrate

Office
United Kingdom
Application Number 0217155
Application Date 01.02.2001
Publication Number 2374302
Publication Date 04.09.2002
Publication Kind B
IPC
A61K 47/02
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
02Inorganic compounds
A61K 9/28
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
20Pills, lozenges or tablets
28Dragees; Coated pills or tablets
A61K 47/04
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
02Inorganic compounds
04Non-metals; Compounds thereof
A61K 47/32
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
30Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
32Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers
A61K 47/44
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
44Oils, fats or waxes according to two or more groups of A61K47/02-A61K47/42107; Natural or modified natural oils, fats or waxes, e.g. castor oil, polyethoxylated castor oil, montan wax, lignite, shellac, rosin, beeswax or lanolin
C09D 5/03
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
A61K 9/2893
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9Medicinal preparations characterised by special physical form
20Pills, tablets, ; discs, rods
28Dragees; Coated pills or tablets ; , e.g. with film or compression coating
2893Tablet coating processes
C09D 5/031
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
031characterised by particle size or shape
Applicants PHOQUS LTD
PHOQUS PHARMACEUTICALS LTD
Inventors MARTIN TREVOR IAN
REEVES LINDA ANN
Priority Data 0002305 01.02.2000 GB
0100425 01.02.2001 GB
Title
(EN) Power material for electrostatic application to a substrate and electrostatic application of the powder material to a substrate
Abstract
(EN) This invention concerns a powder material suitable for electrostatic application to a substrate and a method of electrostatically applying said powder material to a substrate. At least some of the particles which constitute the powder material comprise a core and a shell surrounding the core. The shell and core generally base differing compositions and have different chemical and/or physical propenies. Components which are likely to be altered can be placed in the core whilst maintaining the shell composition, thus allowing changes in formulation of the powder material without destroying the performance of the material in electrostatic application. The powder material is especially suitable for electrostatic application to pharmaceutical solid dosage forms.