CA1025359A - Microencapsulated medical powders - Google Patents

Microencapsulated medical powders

Info

Publication number: CA1025359A
Authority: CA; Canada
Prior art keywords: microencapsulated; medical powders; powders; medical; microencapsulated medical
Prior art date: 1972-05-19
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

Other versions

Inventor

Harry Seager

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.)

Beecham Group PLC

Original Assignee

Beecham Group PLC

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.)

1972-05-19

Filing date

1973-05-18

Publication date

1978-01-31

1973-05-18Application filed by Beecham Group PLCfiledCriticalBeecham Group PLC

1978-01-31Application grantedgrantedCritical

1978-01-31Publication of CA1025359ApublicationCriticalpatent/CA1025359A/en

StatusExpiredlegal-statusCriticalCurrent

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
- A61K9/5089—Processes
- 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
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2072—Pills, tablets, discs, rods characterised by shape, structure or size; Tablets with holes, special break lines or identification marks; Partially coated tablets; Disintegrating flat shaped forms
- A61K9/2077—Tablets comprising drug-containing microparticles in a substantial amount of supporting matrix; Multiparticulate tablets
- A61K9/2081—Tablets comprising drug-containing microparticles in a substantial amount of supporting matrix; Multiparticulate tablets with microcapsules or coated microparticles according to A61K9/50
- 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
- A61K9/5026—Organic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates
- 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
- A61K9/5005—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
- A61K9/48—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
- A61K9/5052—Proteins, e.g. albumin
- A61K9/5057—Gelatin
- 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
- B01J13/043—Drying and 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
- 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
- B01J13/125—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution by evaporation of the solvent

Landscapes

Health & Medical Sciences (AREA)
Chemical & Material Sciences (AREA)
Animal Behavior & Ethology (AREA)
General Health & Medical Sciences (AREA)
Medicinal Chemistry (AREA)
Pharmacology & Pharmacy (AREA)
Epidemiology (AREA)
Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Bioinformatics & Cheminformatics (AREA)
Public Health (AREA)
Veterinary Medicine (AREA)
Organic Chemistry (AREA)
Dispersion Chemistry (AREA)
Chemical Kinetics & Catalysis (AREA)
Medicinal Preparation (AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

CA171,807A1972-05-191973-05-18Microencapsulated medical powdersExpiredCA1025359A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB2357672AGB1403584A (en)	1972-05-19	1972-05-19	Control medicaments

Publications (1)

Publication Number	Publication Date
CA1025359Atrue CA1025359A (en)	1978-01-31

Family

ID=10197917

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA171,807AExpiredCA1025359A (en)	1972-05-19	1973-05-18	Microencapsulated medical powders

Country Status (16)

Country	Link
JP (2)	JPS4954518A (en)
AR (1)	AR197900A1 (en)
AT (1)	AT337902B (en)
AU (1)	AU475493B2 (en)
BE (1)	BE799783A (en)
CA (1)	CA1025359A (en)
DE (1)	DE2325410A1 (en)
DK (2)	DK134424B (en)
ES (1)	ES414908A1 (en)
FR (1)	FR2185390B1 (en)
GB (1)	GB1403584A (en)
HU (1)	HU167559B (en)
IE (1)	IE37637B1 (en)
IL (1)	IL42312A (en)
NL (1)	NL7307033A (en)
ZA (1)	ZA733406B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4940588A (en)*	1984-10-30	1990-07-10	Elan Corporation	Controlled release powder and process for its preparation

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1403584A (en)*	1972-05-19	1975-08-28	Beecham Group Ltd	Control medicaments
GB1532993A (en)*	1975-03-07	1978-11-22	Beecham Group Ltd	Injectable antibiotic compositions
JPS5446001U (en)*	1977-09-07	1979-03-30
FR2403080A1 (en)*	1977-09-15	1979-04-13	Heyden Chem Fab	Slow-release nitro:furantoin compsn. useful as urinary antiseptic - comprises three types of granulate with different solubilities
DE2805106A1 (en)*	1978-02-07	1979-08-16	Hoechst Ag	MICROCAPSULES MADE OF POLYVINYL ALCOHOL WITH LIQUID, WATER-INSOLUBLE FILLING MATERIAL AND PROCESS FOR THEIR PRODUCTION
JPS56156214A (en)*	1980-05-02	1981-12-02	Yoshiaki Kawashima	Preparation of tableting enteric microcapsule
JPS5867616A (en)*	1981-10-15	1983-04-22	Tanabe Seiyaku Co Ltd	Enteric microcapsule and its preparation
US4370313A (en)*	1981-10-26	1983-01-25	Eaton Laboratories, Inc.	Nitrofurantoin dosage form
HU187215B (en)*	1983-01-26	1985-11-28	Egyt Gyogyszervegyeszeti Gyar	Method for producing pharmaceutical product of high actor content and prolonged effect
SE8404808L (en)*	1983-10-03	1985-04-04	Avner Rotman	MICROCAPCLE PLATE MEDICINE IN SOT MATRIX
JPS61218516A (en)*	1985-03-25	1986-09-29	Ichimaru Fuarukosu Kk	Production of sustained release microcapsule
IT1230095B (en)*	1989-04-27	1991-10-05	Parenta Srl	PROCEDURE FOR THE PREPARATION OF STERILE FORMS OF INJECTABLE POWDERS OF ANTIBIOTICS.
EP0492007B1 (en)*	1990-11-29	1995-02-08	F.H. FAULDING & CO. LIMITED	Process for producing liquid loaded powders
SE9903236D0 (en)*	1999-09-10	1999-09-10	Astra Ab	Method of obtaining microparticles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL7112083A (en)*	1970-09-16	1972-03-20
GB1403584A (en)*	1972-05-19	1975-08-28	Beecham Group Ltd	Control medicaments

1972
- 1972-05-19GBGB2357672Apatent/GB1403584A/ennot_activeExpired
1973
- 1973-05-15IEIE775/73Apatent/IE37637B1/enunknown
- 1973-05-17DKDK277173AApatent/DK134424B/enunknown
- 1973-05-18NLNL7307033Apatent/NL7307033A/xxunknown
- 1973-05-18DEDE2325410Apatent/DE2325410A1/enactivePending
- 1973-05-18ILIL42312Apatent/IL42312A/enunknown
- 1973-05-18CACA171,807Apatent/CA1025359A/ennot_activeExpired
- 1973-05-18FRFR7318155Apatent/FR2185390B1/frnot_activeExpired
- 1973-05-18ATAT439473Apatent/AT337902B/ennot_activeIP Right Cessation
- 1973-05-18HUHUBE1170Apatent/HU167559B/huunknown
- 1973-05-18BEBE131326Apatent/BE799783A/enunknown
- 1973-05-18ESES414908Apatent/ES414908A1/ennot_activeExpired
- 1973-05-19JPJP48056245Apatent/JPS4954518A/jaactivePending
- 1973-05-21ZAZA00733406Apatent/ZA733406B/enunknown
- 1973-05-21AUAU55965/73Apatent/AU475493B2/ennot_activeExpired
- 1973-05-21ARAR248141Apatent/AR197900A1/enactive
- 1973-08-16JPJP48092341Apatent/JPS49116220A/jaactivePending
1974
- 1974-04-05DKDK190774Apatent/DK134423C/enactive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4940588A (en)*	1984-10-30	1990-07-10	Elan Corporation	Controlled release powder and process for its preparation
US4952402A (en)*	1984-10-30	1990-08-28	Elan Corporation, P.L.C.	Controlled release powder and process for its preparation

Also Published As

Publication number	Publication date
IE37637B1 (en)	1977-09-14
AR197900A1 (en)	1974-05-15
ATA439473A (en)	1976-11-15
AT337902B (en)	1977-07-25
DK134423B (en)	1976-11-08
IE37637L (en)	1973-11-19
JPS4954518A (en)	1974-05-27
AU475493B2 (en)	1976-08-26
GB1403584A (en)	1975-08-28
AU5596573A (en)	1974-11-21
HU167559B (en)	1975-11-28
DE2325410A1 (en)	1973-11-29
DK134423C (en)	1977-04-12
IL42312A (en)	1977-01-31
FR2185390A1 (en)	1974-01-04
BE799783A (en)	1973-11-19
NL7307033A (en)	1973-11-21
ES414908A1 (en)	1976-06-01
DK134424B (en)	1976-11-08
IL42312A0 (en)	1973-07-30
JPS49116220A (en)	1974-11-06
DK134424C (en)	1977-05-23
FR2185390B1 (en)	1977-04-15
ZA733406B (en)	1975-03-26
DK190774A (en)	1975-10-06

Publication	Publication Date	Title
CA992300A (en)	1976-07-06	Diaper containing powder
CA1024411A (en)	1978-01-17	Syringe
CA1003793A (en)	1977-01-18	Nursing unit
CA1033610A (en)	1978-06-27	Fat
CA983342A (en)	1976-02-10	Respirator
CA1025359A (en)	1978-01-31	Microencapsulated medical powders
CA972993A (en)	1975-08-19	Ophthalmoscope
CA986359A (en)	1976-03-30	Projectile-case connection
CA996196A (en)	1976-08-31	Respirator
CA1015237A (en)	1977-08-09	Syringe
AU467736B2 (en)	1975-12-11	Pteridinones and the preparation thereof
AU4756672A (en)	1974-04-26	Sunscreening preparation
CA1017360A (en)	1977-09-13	Acaricides
AU472532B2 (en)	1976-05-27	Novel marked capsule
CA890274A (en)	1972-01-11	Disposable cooler
CA952503A (en)	1974-08-06	Vitol capsule aircraft
CA995826A (en)	1976-08-24	Three-dimensional radiography
CA902628A (en)	1972-06-13	Silylorganocarbamates and preparation
AU464843B2 (en)	1975-08-25	Dusting powder
CA902385A (en)	1972-06-13	Spirometer
CA901478A (en)	1972-05-30	Pesticidal capsules
AU490147B2 (en)		Diaper containing powder
CA904308A (en)	1972-07-04	1-substituted-5-nitro-2-imidazolyl compounds and the preparation thereof
CA898453A (en)	1972-04-25	Bedstead
CA907936A (en)	1972-08-22	Fabricated skin

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