BR9906081A - Processo de secagem de suspensões coloidais de nanocápsulas e nanoesferas poliméricas por aspersão - Google Patents

Processo de secagem de suspensões coloidais de nanocápsulas e nanoesferas poliméricas por aspersão

Info

Publication number
BR9906081A
BR9906081A BR9906081A BR9906081A BR9906081A BR 9906081 A BR9906081 A BR 9906081A BR 9906081 A BR9906081 A BR 9906081A BR 9906081 A BR9906081 A BR 9906081A BR 9906081 A BR9906081 A BR 9906081A
Authority
BR
Brazil
Prior art keywords
drying process
nanocapsules
nanospheres
spraying
colloidal suspensions
Prior art date
Application number
BR9906081A
Other languages
English (en)
Inventor
Silvia Staniscuaski Guterres
Claudia Regina Muller
Valquiria Linck Bassani
Adriana Raffin Pohlmann
Teresa Cristina Tavares Costa
Original Assignee
Univ Fed Do Rio Grande Do Sul
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
Application filed by Univ Fed Do Rio Grande Do Sul filed Critical Univ Fed Do Rio Grande Do Sul
Priority to BR9906081A priority Critical patent/BR9906081A/pt
Priority to FR0015084A priority patent/FR2801227B1/fr
Publication of BR9906081A publication Critical patent/BR9906081A/pt

Links

Classifications

    • 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
    • A61K9/1605—Excipients; Inactive ingredients
    • A61K9/1611—Inorganic compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19—Carboxylic acids, e.g. valproic acid
    • A61K31/195—Carboxylic acids, e.g. valproic acid having an amino group
    • A61K31/196—Carboxylic acids, e.g. valproic acid having an amino group the amino group being directly attached to a ring, e.g. anthranilic acid, mefenamic acid, diclofenac, chlorambucil
    • 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
    • A61K9/51—Nanocapsules; Nanoparticles
    • 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
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Public Health (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biomedical Technology (AREA)
  • Optics & Photonics (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Medicinal Preparation (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

<MU><MU>"PROCESSO DE SECAGEM DE SUSPENSõES COLOIDAIS DE NANOCáPSULAS E NANOESFERAS POLIMéRICAS POR ASPERSãO"<MV><MV> a partir de suspensões aquosas coloidais de nanocápsulas e nanoesferas poliméricas. Constitui-se numa alternativa tecnológica interessante para a melhoria da estabilidade físico-química com a manutenção e/ou melhoria das propriedades dos sistemas coloidais, bem como para a preparação de produtos intermediários para a produção de formas farmacêuticas compartimentadas (cápsulas e comprimidos) ou não (granulados e pós).
BR9906081A 1999-11-22 1999-11-22 Processo de secagem de suspensões coloidais de nanocápsulas e nanoesferas poliméricas por aspersão BR9906081A (pt)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR9906081A BR9906081A (pt) 1999-11-22 1999-11-22 Processo de secagem de suspensões coloidais de nanocápsulas e nanoesferas poliméricas por aspersão
FR0015084A FR2801227B1 (fr) 1999-11-22 2000-11-22 Procede de sechage de suspensions colloidales de nanocapsules et de nanospheres polymeres par aspersion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR9906081A BR9906081A (pt) 1999-11-22 1999-11-22 Processo de secagem de suspensões coloidais de nanocápsulas e nanoesferas poliméricas por aspersão

Publications (1)

Publication Number Publication Date
BR9906081A true BR9906081A (pt) 2001-06-26

Family

ID=4074310

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9906081A BR9906081A (pt) 1999-11-22 1999-11-22 Processo de secagem de suspensões coloidais de nanocápsulas e nanoesferas poliméricas por aspersão

Country Status (2)

Country Link
BR (1) BR9906081A (pt)
FR (1) FR2801227B1 (pt)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576759A (en) * 1968-04-12 1971-04-27 Ncr Co Process for en masse production of spherules by desiccation
DE2930409A1 (de) * 1979-07-26 1981-02-12 Bayer Ag Spruehtrocknung von mikrokapseldispersionen
JP2560220B2 (ja) * 1990-03-27 1996-12-04 工業技術院長 徐放性粒状体とその製造方法

Also Published As

Publication number Publication date
FR2801227A1 (fr) 2001-05-25
FR2801227B1 (fr) 2003-06-27

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Legal Events

Date Code Title Description
B07A Technical examination (opinion): publication of technical examination (opinion)
B07A Technical examination (opinion): publication of technical examination (opinion)
B09B Decision: refusal

Free format text: INDEFIRO O PRESENTE PEDIDO DE PATENTE COMO INVENCAO - DE ACORDO COM O ART 8O DA LPI.