GB1297476A – – Google Patents
GB1297476A – – Google Patents
Info
Publication number
GB1297476A
GB1297476A
GB1297476DA
GB1297476A
GB 1297476 A
GB1297476 A
GB 1297476A
GB 1297476D A
GB1297476D A
GB 1297476DA
GB 1297476 A
GB1297476 A
GB 1297476A
Authority
GB
United Kingdom
Prior art keywords
acetate
active
propionate
water
glycol ether
Prior art date
1970-03-04
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
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.)
1970-03-04
Filing date
1971-04-19
Publication date
1972-11-22
1971-04-19
Application filed
filed
Critical
1972-11-22
Publication of GB1297476A
publication
Critical
patent/GB1297476A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
Abstract
1297476 Microgranulate FARBENFABRIKEN BAYER AG 19 April 1971 [4 March 1970] 22308/71 Heading A5B [Also in Division B8] Solid, free-flowing, substantially spherical particles (microgranulates) are prepared by dispersing or dissolving an “active” material in a solution of a cellulose ester in a glycol ether and introducing discrete droplets of the resultant into water whereby the glycol ether is given up to the water and the droplets become solidified and may be separated. Suitable cellulose esters are: cellulose acetate, propionate, propionate acetate and butyrate acetate preferably having 2.2 to 2.6 acyl radicals per anhydroglucose unit. Suitable glycol ethers are mono- and di-alkyl ethers of aliphatic glycols having 1 to 6 carbon atoms in the alkyl group. Examples relate to processes in which the “active” material is: aspirin, paraffin oil, TiO 2 and the compound (CH 3 O) 2 PO (CHOH-CCl 3 ).
GB1297476D
1970-03-04
1971-04-19
Expired
GB1297476A
(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
GB1297476A
true
GB1297476A
(en)
1972-11-22
Family
ID=5764038
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1297476D
Expired
GB1297476A
(en)
1970-03-04
1971-04-19
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)
Cited By (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4609542A
(en)
*
1978-12-22
1986-09-02
Elan Corporation, P.L.C.
New pharmaceutical forms for administration of medicaments by oral route, with programmed release
WO1999055774A1
(en)
*
1998-04-24
1999-11-04
Eastman Chemical Company
Coprecipitation of cellulose esters with functional additives and compositions thus obtainable
EP1044683A1
(en)
*
1999-04-15
2000-10-18
Debio Recherche Pharmaceutique S.A.
One-step dispersion method for the microencapsulation of water soluble substances
EP1151741A1
(en)
*
2000-05-05
2001-11-07
L’oreal
Microcapsules with an aqueous core containing at least an active water-soluble cosmetic or dermatologic ingredient and cosmetic or dermatologic compositions containing these microcapsules
WO2005061095A1
(en)
*
2003-12-24
2005-07-07
Mg Pharmacy Inc.
Process for producing microsphere and apparatus for producing the same
US9156016B2
(en)
2010-09-30
2015-10-13
Midatech Pharma (Wales) Limited
Apparatus and method for making solid beads
US9259701B2
(en)
2010-09-30
2016-02-16
Q Chip Ltd.
Method for making solid beads
WO2019238892A1
(en)
*
2018-06-15
2019-12-19
Taminco Bvba
Treatment of poultry or pigs for reducing the feed conversion ratio or increasing their bodyweight gain
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
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
1970
1970-03-04
DE
DE19702010116
patent/DE2010116A1/en
active
Pending
1971
1971-02-17
IL
IL36222A
patent/IL36222A/en
unknown
1971-02-18
ZA
ZA711052A
patent/ZA711052B/en
unknown
1971-03-01
AT
AT173571A
patent/AT310127B/en
not_active
IP Right Cessation
1971-03-02
CA
CA106615A
patent/CA922588A/en
not_active
Expired
1971-03-03
CS
CS158871A
patent/CS158290B2/cs
unknown
1971-03-03
TR
TR16847A
patent/TR16847A/en
unknown
1971-03-03
CH
CH307871A
patent/CH549408A/en
not_active
IP Right Cessation
1971-03-04
JP
JP1101371A
patent/JPS5344424B1/ja
active
Pending
1971-03-04
ES
ES388917A
patent/ES388917A1/en
not_active
Expired
1971-03-04
FR
FR7107509A
patent/FR2084200A5/fr
not_active
Expired
1971-03-04
BE
BE763791A
patent/BE763791A/xx
unknown
1971-04-19
GB
GB1297476D
patent/GB1297476A/en
not_active
Expired
Cited By (12)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4609542A
(en)
*
1978-12-22
1986-09-02
Elan Corporation, P.L.C.
New pharmaceutical forms for administration of medicaments by oral route, with programmed release
WO1999055774A1
(en)
*
1998-04-24
1999-11-04
Eastman Chemical Company
Coprecipitation of cellulose esters with functional additives and compositions thus obtainable
EP1044683A1
(en)
*
1999-04-15
2000-10-18
Debio Recherche Pharmaceutique S.A.
One-step dispersion method for the microencapsulation of water soluble substances
WO2000062761A1
(en)
*
1999-04-15
2000-10-26
Debio Recherche Pharmaceutique S.A.
Process for microencapsulation of water soluble substances
US6777002B1
(en)
1999-04-15
2004-08-17
Debio Recherche Pharmaceutique S.A.
Process for microencapsulation of water soluble substances
EP1151741A1
(en)
*
2000-05-05
2001-11-07
L’oreal
Microcapsules with an aqueous core containing at least an active water-soluble cosmetic or dermatologic ingredient and cosmetic or dermatologic compositions containing these microcapsules
US6531160B2
(en)
2000-05-05
2003-03-11
L′Oreal
Microcapsules with an aqueous core containing at least one water-soluble cosmetic or dermatological active principle and cosmetic or dermatological compositions containing them
WO2005061095A1
(en)
*
2003-12-24
2005-07-07
Mg Pharmacy Inc.
Process for producing microsphere and apparatus for producing the same
US9156016B2
(en)
2010-09-30
2015-10-13
Midatech Pharma (Wales) Limited
Apparatus and method for making solid beads
US9259701B2
(en)
2010-09-30
2016-02-16
Q Chip Ltd.
Method for making solid beads
WO2019238892A1
(en)
*
2018-06-15
2019-12-19
Taminco Bvba
Treatment of poultry or pigs for reducing the feed conversion ratio or increasing their bodyweight gain
CN112334011A
(en)
*
2018-06-15
2021-02-05
塔明克公司
Treatment of poultry or pigs for reducing feed conversion ratio or increasing weight gain
Also Published As
Publication number
Publication date
FR2084200A5
(en)
1971-12-17
IL36222A0
(en)
1971-04-28
ES388917A1
(en)
1974-02-16
SU379074A3
(en)
1973-04-18
AT310127B
(en)
1973-09-25
TR16847A
(en)
1973-07-01
CH549408A
(en)
1974-05-31
IL36222A
(en)
1973-08-29
ZA711052B
(en)
1971-10-27
DE2010116A1
(en)
1971-09-16
CS158290B2
(en)
1974-10-15
BE763791A
(en)
1971-08-02
JPS5344424B1
(en)
1978-11-29
CA922588A
(en)
1973-03-13
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Legal Events
Date
Code
Title
Description
1973-04-04
PS
Patent sealed [section 19, patents act 1949]
1977-11-16
PLNP
Patent lapsed through nonpayment of renewal fees
