AT310127B - Process for encasing or embedding solid particles or liquid droplets with cellulose esters or in cellulose esters - Google Patents

Process for encasing or embedding solid particles or liquid droplets with cellulose esters or in cellulose esters

Info

Publication number
AT310127B
AT310127B AT173571A AT173571A AT310127B AT 310127 B AT310127 B AT 310127B AT 173571 A AT173571 A AT 173571A AT 173571 A AT173571 A AT 173571A AT 310127 B AT310127 B AT 310127B
Authority
AT
Austria
Prior art keywords
cellulose esters
encasing
solid particles
liquid droplets
embedding solid
Prior art date
Application number
AT173571A
Other languages
German (de)
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Application granted granted Critical
Publication of AT310127B publication Critical patent/AT310127B/en

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
    • A61K9/5047—Cellulose ethers containing no ester groups, e.g. hydroxypropyl methylcellulose
    • 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
    • A61K9/1629—Organic macromolecular compounds
    • A61K9/1652—Polysaccharides, e.g. alginate, cellulose derivatives; Cyclodextrin
    • 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
    • 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
    • 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
    • B01J13/06—Making microcapsules or microballoons by phase separation
    • B01J13/12—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
AT173571A 1970-03-04 1971-03-01 Process for encasing or embedding solid particles or liquid droplets with cellulose esters or in cellulose esters AT310127B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702010116 DE2010116A1 (en) 1970-03-04 1970-03-04 Process for the production of micro-granules

Publications (1)

Publication Number Publication Date
AT310127B true AT310127B (en) 1973-09-25

Family

ID=5764038

Family Applications (1)

Application Number Title Priority Date Filing Date
AT173571A AT310127B (en) 1970-03-04 1971-03-01 Process for encasing or embedding solid particles or liquid droplets with cellulose esters or in cellulose esters

Country Status (13)

Country Link
JP (1) JPS5344424B1 (en)
AT (1) AT310127B (en)
BE (1) BE763791A (en)
CA (1) CA922588A (en)
CH (1) CH549408A (en)
CS (1) CS158290B2 (en)
DE (1) DE2010116A1 (en)
ES (1) ES388917A1 (en)
FR (1) FR2084200A5 (en)
GB (1) GB1297476A (en)
IL (1) IL36222A (en)
TR (1) TR16847A (en)
ZA (1) ZA711052B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE48715B1 (en) * 1978-12-22 1985-05-01 Elan Corp Plc New galencial forms for administration of medicaments by oral route,with programmed release and processes for preparing same
US4389330A (en) * 1980-10-06 1983-06-21 Stolle Research And Development Corporation Microencapsulation process
DD160393A3 (en) * 1980-11-14 1983-07-27 Horst Dautzenberg MICRO CAPSULES AND METHOD FOR THE PRODUCTION THEREOF
JP2534691B2 (en) * 1986-12-26 1996-09-18 トツパン・ム−ア株式会社 Method for producing high-density microcapsules
JP2003526694A (en) * 1998-04-24 2003-09-09 イーストマン ケミカル カンパニー Coprecipitation of cellulose ester with functional additive and composition obtained thereby
EP1044683A1 (en) 1999-04-15 2000-10-18 Debio Recherche Pharmaceutique S.A. One-step dispersion method for the microencapsulation of water soluble substances
CN1189159C (en) * 2000-05-05 2005-02-16 欧莱雅 Micro-capsule contg. water soluble beauty-care activity component water nuclear, and composition contg. same
US20070154560A1 (en) * 2003-12-24 2007-07-05 Mg Pharmacy Inc. Process for producing microsphere and apparatus for producing the same
GB201016436D0 (en) 2010-09-30 2010-11-17 Q Chip Ltd Method of making solid beads
GB201016433D0 (en) 2010-09-30 2010-11-17 Q Chip Ltd Apparatus and method for making solid beads
EP3806654A1 (en) * 2018-06-15 2021-04-21 Taminco Bvba Treatment of poultry or pigs for reducing the feed conversion ratio or increasing their bodyweight gain

Also Published As

Publication number Publication date
DE2010116A1 (en) 1971-09-16
ZA711052B (en) 1971-10-27
CH549408A (en) 1974-05-31
IL36222A0 (en) 1971-04-28
ES388917A1 (en) 1974-02-16
CA922588A (en) 1973-03-13
CS158290B2 (en) 1974-10-15
SU379074A3 (en) 1973-04-18
IL36222A (en) 1973-08-29
GB1297476A (en) 1972-11-22
BE763791A (en) 1971-08-02
JPS5344424B1 (en) 1978-11-29
FR2084200A5 (en) 1971-12-17
TR16847A (en) 1973-07-01

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee