GB2339165B - Methods and apparatus for particle formation - Google Patents

Methods and apparatus for particle formation

Info

Publication number
GB2339165B
GB2339165B GB9909951A GB9909951A GB2339165B GB 2339165 B GB2339165 B GB 2339165B GB 9909951 A GB9909951 A GB 9909951A GB 9909951 A GB9909951 A GB 9909951A GB 2339165 B GB2339165 B GB 2339165B
Authority
GB
United Kingdom
Prior art keywords
methods
particle formation
particle
formation
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 - Lifetime
Application number
GB9909951A
Other versions
GB2339165A (en
GB9909951D0 (en
Inventor
Mazen Hanna
Peter York
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.)
Nektar Therapeutics UK Ltd
Original Assignee
Bradford Particle Design Ltd
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
Priority claimed from GBGB9810559.6A external-priority patent/GB9810559D0/en
Application filed by Bradford Particle Design Ltd filed Critical Bradford Particle Design Ltd
Priority to GB9909951A priority Critical patent/GB2339165B/en
Publication of GB9909951D0 publication Critical patent/GB9909951D0/en
Publication of GB2339165A publication Critical patent/GB2339165A/en
Application granted granted Critical
Publication of GB2339165B publication Critical patent/GB2339165B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • 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
    • A61K9/1688—Processes resulting in pure drug agglomerate optionally containing up to 5% of excipient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/04—Solvent extraction of solutions which are liquid
    • B01D11/0403—Solvent extraction of solutions which are liquid with a supercritical fluid
    • B01D11/0411—Solvent extraction of solutions which are liquid with a supercritical fluid the supercritical fluid acting as solvent for the solvent and as anti-solvent for the solute, e.g. formation of particles from solutions
    • 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
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/008—Processes carried out under supercritical conditions
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Epidemiology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
GB9909951A 1998-05-15 1999-04-29 Methods and apparatus for particle formation Expired - Lifetime GB2339165B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9909951A GB2339165B (en) 1998-05-15 1999-04-29 Methods and apparatus for particle formation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9810559.6A GB9810559D0 (en) 1998-05-15 1998-05-15 Method and apparatus for particle formation
GB9909951A GB2339165B (en) 1998-05-15 1999-04-29 Methods and apparatus for particle formation

Publications (3)

Publication Number Publication Date
GB9909951D0 GB9909951D0 (en) 1999-06-30
GB2339165A GB2339165A (en) 2000-01-19
GB2339165B true GB2339165B (en) 2000-11-01

Family

ID=26313700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9909951A Expired - Lifetime GB2339165B (en) 1998-05-15 1999-04-29 Methods and apparatus for particle formation

Country Status (1)

Country Link
GB (1) GB2339165B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031691A1 (en) * 1996-03-01 1997-09-04 The University Of Kansas Methods and apparatus for particle precipitation and coating using near-critical and supercritical antisolvents
GB2322326A (en) * 1997-02-21 1998-08-26 Bradford Particle Design Ltd Controlled formation of particles using supercritical fluids

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031691A1 (en) * 1996-03-01 1997-09-04 The University Of Kansas Methods and apparatus for particle precipitation and coating using near-critical and supercritical antisolvents
GB2322326A (en) * 1997-02-21 1998-08-26 Bradford Particle Design Ltd Controlled formation of particles using supercritical fluids

Also Published As

Publication number Publication date
GB2339165A (en) 2000-01-19
GB9909951D0 (en) 1999-06-30

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20120614 AND 20120620

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20130620 AND 20130626

PE20 Patent expired after termination of 20 years

Expiry date: 20190428