Spray gel base and spray gel preparation

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/12 (2006.01) A61K 9/00 (2006.01) A61K 39/145 (2006.01) A61K 47/32 (2006.01)

Patent

CA 2012791

The present invention is directed to a spray gel base having an excellent spread-stick property, which is prepared by thickening a 0.2 - 1.5 % by weight aqueous solution of carboxyvinyl polymer with a water-soluble basic substance, followed by adjusting the viscosity thereof with a viscosity adjustor within the range of 500 - 5,000 centipoise so that the particle size distribution of spray after spraying is over 80 % in the area of 20 - 100 µm and to a spray gel preparation having an excellent spread-stick property, which is prepared by mixing an active medicament with said spray gel base.

Base pour gel à pulvériser, possédant d'excellentes propriétés d'étalement-adhérence; elle est préparée par épaississement d'une solution aqueuse de 0,2 à 1,5 % en poids de polymère carboxyvinylique avec une substance basique hydrosoluble, suivi de l'ajustement de la viscosité, à l'aide d'un dispositif d'ajustement, à l'intérieur d'une plage de 500 à 5000 centipoises, de telle façon que la distribution granulométrique du produit pulvérisé, après pulvérisation, se situe à plus de 80 % dans la zone de 20 - 100 microns, et finalement de l'obtention d'une préparation de gel à pulvériser avec d'excellentes propriétés d'étalement-adhérence, par mélange d'un médicament actif avec cette base.

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