GB2003108A - Producing microspheres - Google Patents

Producing microspheres

Info

Publication number
GB2003108A
GB2003108A GB7834199A GB7834199A GB2003108A GB 2003108 A GB2003108 A GB 2003108A GB 7834199 A GB7834199 A GB 7834199A GB 7834199 A GB7834199 A GB 7834199A GB 2003108 A GB2003108 A GB 2003108A
Authority
GB
United Kingdom
Prior art keywords
polymer
core material
microspheres
producing microspheres
solution
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.)
Granted
Application number
GB7834199A
Other versions
GB2003108B (en
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.)
Sandoz AG
Original Assignee
Sandoz 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 Sandoz AG filed Critical Sandoz AG
Publication of GB2003108A publication Critical patent/GB2003108A/en
Application granted granted Critical
Publication of GB2003108B publication Critical patent/GB2003108B/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/26—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests in coated particulate form
    • A01N25/28—Microcapsules or nanocapsules
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0241—Containing particulates characterized by their shape and/or structure
    • A61K8/025—Explicitly spheroidal or spherical shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/85—Polyesters
    • 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
    • A61K9/1641—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poloxamers
    • A61K9/1647—Polyesters, e.g. poly(lactide-co-glycolide)
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q13/00—Formulations or additives for perfume preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q15/00—Anti-perspirants or body deodorants
    • 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
    • B01J13/08—Simple coacervation, i.e. addition of highly hydrophilic material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/56—Compounds, absorbed onto or entrapped into a solid carrier, e.g. encapsulated perfumes, inclusion compounds, sustained release forms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/60—Particulates further characterized by their structure or composition
    • A61K2800/61—Surface treated
    • A61K2800/62—Coated
    • A61K2800/624—Coated by macromolecular compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/60—Particulates further characterized by their structure or composition
    • A61K2800/65—Characterized by the composition of the particulate/core
    • A61K2800/654—The particulate/core comprising macromolecular material

Abstract

Microspheres of core material and polymer are produced by adding a phase separation agent to a medium comprising a solution of the polymer and a solution or dispersion of the core material at a temperature of -40 to -100 DEG C. Preferably the core material is a drug and the polymer is biodegradable. The low temperature phase separation step prevents uncontrolled agglomeration of the microspheres.
GB7834199A 1977-08-25 1978-08-22 Organic compounds Expired GB2003108B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82771077A 1977-08-25 1977-08-25

Publications (2)

Publication Number Publication Date
GB2003108A true GB2003108A (en) 1979-03-07
GB2003108B GB2003108B (en) 1982-03-24

Family

ID=25249947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7834199A Expired GB2003108B (en) 1977-08-25 1978-08-22 Organic compounds

Country Status (21)

Country Link
JP (1) JPS5455717A (en)
AT (1) AT372019B (en)
AU (1) AU522215B2 (en)
BE (1) BE869915A (en)
CA (1) CA1122077A (en)
CH (2) CH644768A5 (en)
DE (1) DE2836044A1 (en)
DK (2) DK361878A (en)
ES (1) ES472800A1 (en)
FI (1) FI64899C (en)
FR (1) FR2400950A1 (en)
GB (1) GB2003108B (en)
IE (1) IE47255B1 (en)
IL (1) IL55418A (en)
IT (1) IT1098111B (en)
NL (1) NL7808613A (en)
NZ (1) NZ188232A (en)
PH (1) PH15447A (en)
PT (1) PT68473A (en)
SE (1) SE431942B (en)
ZA (1) ZA784855B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6204308B1 (en) 1999-03-01 2001-03-20 Novartis Ag Organic compounds
WO2001085417A1 (en) * 2000-05-12 2001-11-15 Dalton Paul D Method of producing structures using centrifugal forces
US6969480B2 (en) 2000-05-12 2005-11-29 Matregen Corp. Method of producing structures using centrifugal forces

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045845B2 (en) * 1979-10-31 1985-10-12 田辺製薬株式会社 Method for producing microcapsules containing pharmaceutical substances
US4384975A (en) * 1980-06-13 1983-05-24 Sandoz, Inc. Process for preparation of microspheres
PH19942A (en) * 1980-11-18 1986-08-14 Sintex Inc Microencapsulation of water soluble polypeptides
DE3045135A1 (en) * 1980-11-29 1982-06-09 Sandoz-Patent-GmbH, 7850 Lörrach BODEGRADABLE POLYMERS CONTAINING PHARMACEUTICAL COMPOSITIONS
JPS5933214A (en) * 1982-08-19 1984-02-23 Mitsui Toatsu Chem Inc Carcinostatic agent formed to microsphere and its preparation
AT382076B (en) * 1982-10-15 1987-01-12 Chemie Linz Ag METHOD FOR THE PRODUCTION OF PRESSURES WITH RETARDED ACTIVE SUBSTANCE RELEASE
DE3417576A1 (en) * 1984-05-11 1985-11-14 Lentia GmbH Chem. u. pharm. Erzeugnisse - Industriebedarf, 8000 München RETARD FORMS OF ALPHA- (2,5-DIMETHOXY-PHENYL) -SS-GLYCINAMIDOAETHANOL AND METHOD FOR THE PRODUCTION THEREOF
DE3428372A1 (en) * 1984-08-01 1986-02-13 Hoechst Ag, 6230 Frankfurt CONTROLLED RELEASE REGULAR PEPTIDES MICROCAPSULES, PRODUCTION METHOD AND INJECTION PREPARATIONS
CH660302A5 (en) * 1984-10-17 1987-04-15 Debiopharm Sa HETEROGENEOUS PHASE MICRO-ENCAPSULATION PROCESS OF WATER-SOLUBLE DRUG SUBSTANCES.
CH669506A5 (en) * 1986-01-13 1989-03-31 Hugo Degen Oscillating and reclining furniture
DE3712095A1 (en) * 1987-04-10 1988-10-20 Lentia Gmbh BINDER-FREE GRANULES WITH DELAYED DELIVERY OF ACTIVE SUBSTANCES
US4861627A (en) * 1987-05-01 1989-08-29 Massachusetts Institute Of Technology Preparation of multiwall polymeric microcapsules
HU221294B1 (en) * 1989-07-07 2002-09-28 Novartis Ag Process for producing retarde compositions containing the active ingredient in a polymeric carrier
FR2657255B1 (en) * 1989-12-27 1992-04-24 Sederma Sa DESCRIPTION OF ORIGINAL COSMETIC PREPARATIONS OF WHICH THE ACTIVE INGREDIENTS ARE TRAPPED IN A POLYMERIC NETWORK GRAFT ON THE SURFACE OF SILICA PARTICLES.
DE4127757A1 (en) * 1991-02-06 1992-08-13 Hoechst Ag NEW PLANT PROTECTIVE FORMULATIONS
US6824822B2 (en) * 2001-08-31 2004-11-30 Alkermes Controlled Therapeutics Inc. Ii Residual solvent extraction method and microparticles produced thereby
EP2219775A4 (en) * 2007-12-11 2012-10-03 Univ Nanyang Tech Hollow multi-layered microspheres for delivery of hydrophilic active compounds
CN104109250B (en) 2008-05-21 2017-04-12 东丽株式会社 Method For Producing Polymer Fine Particle
CN103828801B (en) * 2014-01-15 2016-01-27 福建农林大学 Pleocidin/emamectin-benzoate microballoon and preparation method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT631615A (en) * 1960-02-26
US3427250A (en) * 1963-03-25 1969-02-11 Polaroid Corp Microscopic capsules and process for their preparation
US3531418A (en) * 1965-08-18 1970-09-29 Ncr Co En masse encapsulation process
FR1497584A (en) * 1966-08-11 1967-10-13 Roussel Uclaf Microcapsule manufacturing process
US3703474A (en) * 1967-08-21 1972-11-21 Ncr Co Encapsulation process
US3773919A (en) * 1969-10-23 1973-11-20 Du Pont Polylactide-drug mixtures
JPS51125675A (en) * 1975-02-13 1976-11-02 Asahi Chem Ind Co Ltd A porous capsule structvre and a process for manufacturing turing it

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6204308B1 (en) 1999-03-01 2001-03-20 Novartis Ag Organic compounds
WO2001085417A1 (en) * 2000-05-12 2001-11-15 Dalton Paul D Method of producing structures using centrifugal forces
US6787090B2 (en) 2000-05-12 2004-09-07 Matregen Corp. Method of producing structures using centrifugal forces
US6969480B2 (en) 2000-05-12 2005-11-29 Matregen Corp. Method of producing structures using centrifugal forces

Also Published As

Publication number Publication date
IL55418A (en) 1981-07-31
BE869915A (en) 1979-02-23
IE781708L (en) 1979-02-25
DE2836044C2 (en) 1988-06-23
IL55418A0 (en) 1978-10-31
DK618189D0 (en) 1989-12-07
DK361878A (en) 1979-02-26
JPS5455717A (en) 1979-05-04
AU522215B2 (en) 1982-05-20
SE7808759L (en) 1979-02-26
CH644768A5 (en) 1984-08-31
SE431942B (en) 1984-03-12
GB2003108B (en) 1982-03-24
AT372019B (en) 1983-08-25
FR2400950A1 (en) 1979-03-23
IT1098111B (en) 1985-09-07
AU3923678A (en) 1980-02-28
JPS645005B2 (en) 1989-01-27
DE2836044A1 (en) 1979-03-01
DK618189A (en) 1989-12-07
NL7808613A (en) 1979-02-27
ZA784855B (en) 1980-04-30
PH15447A (en) 1983-01-18
CA1122077A (en) 1982-04-20
NZ188232A (en) 1980-12-19
ATA612478A (en) 1983-01-15
FR2400950B1 (en) 1983-10-07
IT7826961A0 (en) 1978-08-23
FI782501A (en) 1979-02-26
IE47255B1 (en) 1984-02-08
FI64899B (en) 1983-10-31
ES472800A1 (en) 1979-10-16
PT68473A (en) 1978-09-01
CH649217A5 (en) 1985-05-15
FI64899C (en) 1984-02-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee