CA1162111A - Process for preparing microcapsules with a cellulose phthalate wall in a liquid vehicle - Google Patents

Process for preparing microcapsules with a cellulose phthalate wall in a liquid vehicle

Info

Publication number
CA1162111A
CA1162111A CA000375086A CA375086A CA1162111A CA 1162111 A CA1162111 A CA 1162111A CA 000375086 A CA000375086 A CA 000375086A CA 375086 A CA375086 A CA 375086A CA 1162111 A CA1162111 A CA 1162111A
Authority
CA
Canada
Prior art keywords
membrane
fact
polymer
process according
microcapsules
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
Application number
CA000375086A
Other languages
English (en)
French (fr)
Inventor
Massimo Calanchi
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.)
Adare Pharmaceuticals SRL
Original Assignee
Eurand International SpA
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 Eurand International SpA filed Critical Eurand International SpA
Application granted granted Critical
Publication of CA1162111A publication Critical patent/CA1162111A/en
Expired legal-status Critical Current

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
    • A61K9/48—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
    • A61K9/5005—Wall or coating material
    • A61K9/5021—Organic macromolecular compounds
    • A61K9/5036—Polysaccharides, e.g. gums, alginate; Cyclodextrin
    • A61K9/5042—Cellulose; Cellulose derivatives, e.g. phthalate or acetate succinate esters of hydroxypropyl methylcellulose
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2989—Microcapsule with solid core [includes liposome]

Landscapes

  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Medicinal Preparation (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Jellies, Jams, And Syrups (AREA)
CA000375086A 1980-04-09 1981-04-09 Process for preparing microcapsules with a cellulose phthalate wall in a liquid vehicle Expired CA1162111A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21271/80A IT1148784B (it) 1980-04-09 1980-04-09 Procedimento per la preparazione di microcapsule in un veicolo liquido
IT21271A/80 1980-04-09

Publications (1)

Publication Number Publication Date
CA1162111A true CA1162111A (en) 1984-02-14

Family

ID=11179324

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000375086A Expired CA1162111A (en) 1980-04-09 1981-04-09 Process for preparing microcapsules with a cellulose phthalate wall in a liquid vehicle

Country Status (9)

Country Link
US (1) US4460563A (OSRAM)
EP (1) EP0038585B1 (OSRAM)
JP (1) JPS56161833A (OSRAM)
AT (1) ATE8344T1 (OSRAM)
CA (1) CA1162111A (OSRAM)
DE (1) DE3164666D1 (OSRAM)
DK (1) DK158568C (OSRAM)
ES (1) ES501212A0 (OSRAM)
IT (1) IT1148784B (OSRAM)

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JPS5814253B2 (ja) * 1974-04-10 1983-03-18 カンザキセイシ カブシキガイシヤ ビシヨウカプセルノ セイゾウホウホウ
CA1040018A (en) * 1974-06-19 1978-10-10 Dale R. Shackle Cross-linked hydroxypropylcellulose microcapsules and process for making
JPS5231981A (en) * 1975-08-18 1977-03-10 Takeda Chem Ind Ltd Microcapsule preparation method
JPS55161849A (en) * 1979-06-04 1980-12-16 Toray Silicone Co Ltd Organopolysiloxane composition
US4317743A (en) * 1979-12-05 1982-03-02 Wallace Business Forms, Inc. Process for making microcapsules and resulting product
US4259315A (en) * 1980-06-13 1981-03-31 A. H. Robins Company, Inc. Controlled release potassium dosage form

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822535A (en) * 1985-07-12 1989-04-18 Norsk Hydro A.S. Method for producing small, spherical polymer particles

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ATE8344T1 (de) 1984-07-15
EP0038585A1 (en) 1981-10-28
IT1148784B (it) 1986-12-03
IT8021271A0 (it) 1980-04-09
DK160881A (da) 1981-10-10
JPH0411254B2 (OSRAM) 1992-02-27
DE3164666D1 (en) 1984-08-16
US4460563A (en) 1984-07-17
DK158568B (da) 1990-06-11
EP0038585B1 (en) 1984-07-11
JPS56161833A (en) 1981-12-12
DK158568C (da) 1990-11-12
ES8204613A1 (es) 1982-05-01
ES501212A0 (es) 1982-05-01

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