CA2247900C - Procedes et appareil pour la precipitation et l'enrobage de particules au moyen d'antisolvants quasi-critiques et supercritiques - Google Patents

Procedes et appareil pour la precipitation et l'enrobage de particules au moyen d'antisolvants quasi-critiques et supercritiques Download PDF

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Publication number
CA2247900C
CA2247900C CA002247900A CA2247900A CA2247900C CA 2247900 C CA2247900 C CA 2247900C CA 002247900 A CA002247900 A CA 002247900A CA 2247900 A CA2247900 A CA 2247900A CA 2247900 C CA2247900 C CA 2247900C
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CA
Canada
Prior art keywords
antisolvent
particles
dispersant
solution
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CA002247900A
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English (en)
Other versions
CA2247900A1 (fr
Inventor
Bala Subramaniam
Said Saim
Roger A. Rajewski
Valentino Stella
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Kansas
Original Assignee
University of Kansas
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/723,463 external-priority patent/US5874029A/en
Priority claimed from US08/805,215 external-priority patent/US5833891A/en
Application filed by University of Kansas filed Critical University of Kansas
Priority claimed from PCT/US1997/003207 external-priority patent/WO1997031691A1/fr
Publication of CA2247900A1 publication Critical patent/CA2247900A1/fr
Application granted granted Critical
Publication of CA2247900C publication Critical patent/CA2247900C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/167—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction with an outer layer or coating comprising drug; with chemically bound drugs or non-active substances on their surface
    • A61K9/1676—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction with an outer layer or coating comprising drug; with chemically bound drugs or non-active substances on their surface having a drug-free core with discrete complete coating layer containing drug
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1682—Processes
    • A61K9/1688—Processes resulting in pure drug agglomerate optionally containing up to 5% of excipient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/025—Processes for applying liquids or other fluent materials performed by spraying using gas close to its critical state
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1682—Processes
    • A61K9/1694—Processes resulting in granules or microspheres of the matrix type containing more than 5% of excipient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/5089—Processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/90—Form of the coating product, e.g. solution, water dispersion, powders or the like at least one component of the composition being in supercritical state or close to supercritical state

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  • Bioinformatics & Cheminformatics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Medicinal Preparation (AREA)

Abstract

Cette invention se rapporte à un procédé et à un appareil améliorés (110) pour la précipitation et l'enrobage de particules au moyen d'un fluide dans des conditions quasi-critiques ou supercritiques. A cet effet, une dispersion fluide (128), contenant un dispersant en phase continue et au moins une substance précipitable, est mise en contact avec un fluide supercritique (FSC) servant d'antisolvant (126), afin de générer des ondes soniques d'antisolvant haute fréquence focalisées, ce qui rompt la dispersion en gouttelettes extrêmement petites. Les vitesses de transfert de masse accrues entre les gouttelettes et l'antisolvant entraînent la précipitation de particules très petites de l'ordre de 0,1 à 10 microns. Dans des procédés d'enrobage, un flux fluidisé turbulent de particules noyaux est créé au moyen d'un antisolvant FSC dans une zone fermée. Les particules noyaux sont mises en contact dans cette zone à des conditions quasi-critiques ou supercritiques avec une dispersion fluide contenant un dispersant et, conjointement, une substance précipitable. L'antisolvant épuise de dispersant et ladite substance est précipitée sur les particules fluidisées.
CA002247900A 1996-03-01 1997-02-28 Procedes et appareil pour la precipitation et l'enrobage de particules au moyen d'antisolvants quasi-critiques et supercritiques Expired - Lifetime CA2247900C (fr)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US1259396P 1996-03-01 1996-03-01
US1259296P 1996-03-01 1996-03-01
US08/723,463 US5874029A (en) 1996-10-09 1996-10-09 Methods for particle micronization and nanonization by recrystallization from organic solutions sprayed into a compressed antisolvent
US60/012,593 1997-02-27
US08/723,463 1997-02-27
US60/012,592 1997-02-27
US08/805,215 US5833891A (en) 1996-10-09 1997-02-27 Methods for a particle precipitation and coating using near-critical and supercritical antisolvents
US08/805,215 1997-02-27
PCT/US1997/003207 WO1997031691A1 (fr) 1996-03-01 1997-02-28 Procedes et appareil pour la precipitation et l'enrobage de particules au moyen d'antisolvants quasi-critiques et supercritiques

Publications (2)

Publication Number Publication Date
CA2247900A1 CA2247900A1 (fr) 1997-09-04
CA2247900C true CA2247900C (fr) 2006-08-01

Family

ID=36764348

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002247900A Expired - Lifetime CA2247900C (fr) 1996-03-01 1997-02-28 Procedes et appareil pour la precipitation et l'enrobage de particules au moyen d'antisolvants quasi-critiques et supercritiques

Country Status (1)

Country Link
CA (1) CA2247900C (fr)

Also Published As

Publication number Publication date
CA2247900A1 (fr) 1997-09-04

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