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

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United Kingdom

Application Number 0217155

Application Date 01.02.2001

Publication Number 2374302

Publication Date 04.09.2002

Publication Kind B

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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.

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47	Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
02	Inorganic compounds

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
9	Medicinal preparations characterised by special physical form
20	Pills, lozenges or tablets
28	Dragees; Coated pills or tablets

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47	Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
02	Inorganic compounds
04	Non-metals; Compounds thereof

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47	Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
30	Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
32	Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
K	PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47	Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
44	Oils, 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

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

C	CHEMISTRY; METALLURGY
09	DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
D	COATING 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
5	Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
03	Powdery paints