AT39935T - Copolymer and process for its preparation. - Google Patents

Copolymer and process for its preparation.

Info

Publication number
AT39935T
AT39935T AT85304733T AT85304733T AT39935T AT 39935 T AT39935 T AT 39935T AT 85304733 T AT85304733 T AT 85304733T AT 85304733 T AT85304733 T AT 85304733T AT 39935 T AT39935 T AT 39935T
Authority
AT
Austria
Prior art keywords
copolymer
preparation
process
Prior art date
Application number
AT85304733T
Other languages
German (de)
Inventor
Motoaki Tanaka
Yasuaki Ogawa
Tsutomu Miyagawa
Toshio Watanabe
Original Assignee
Wako Pure Chem Ind Ltd
Takeda Chemical Industries 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
Family has litigation
Priority to JP59140356A priority Critical patent/JPH0678425B2/en
Application filed by Wako Pure Chem Ind Ltd, Takeda Chemical Industries Ltd filed Critical Wako Pure Chem Ind Ltd
Priority to EP85304733A priority patent/EP0171907B2/en
Publication of AT39935T publication Critical patent/AT39935T/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=15266918&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AT39935(T) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/06Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/14Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1605Excipients; Inactive ingredients
    • A61K9/1629Organic macromolecular compounds
    • A61K9/1641Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poloxamers
    • A61K9/1647Polyesters, e.g. poly(lactide-co-glycolide)
AT85304733T 1984-07-06 1985-07-03 Copolymer and process for its preparation. AT39935T (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59140356A JPH0678425B2 (en) 1984-07-06 1984-07-06 A new process for the preparation of polymer
EP85304733A EP0171907B2 (en) 1984-07-06 1985-07-03 Use of a copolymer in a controlled drug release composition

Publications (1)

Publication Number Publication Date
AT39935T true AT39935T (en) 1989-01-15

Family

ID=15266918

Family Applications (2)

Application Number Title Priority Date Filing Date
AT85304733T AT39935T (en) 1984-07-06 1985-07-03 Copolymer and process for its preparation.
AT85304734T AT39936T (en) 1984-07-06 1985-07-03 A method for producing a polymer or copolymer of lactic acid and / or glycolic acid.

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT85304734T AT39936T (en) 1984-07-06 1985-07-03 A method for producing a polymer or copolymer of lactic acid and / or glycolic acid.

Country Status (8)

Country Link
US (2) US4677191A (en)
EP (2) EP0172636B2 (en)
AT (2) AT39935T (en)
BG (1) BG61520B2 (en)
CA (2) CA1256638A (en)
DE (2) DE3567471D1 (en)
HK (1) HK19592A (en)
SG (1) SG108191G (en)

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Also Published As

Publication number Publication date
DE3567471D1 (en) 1989-02-16
EP0171907A1 (en) 1986-02-19
CA1256638A (en) 1989-06-27
CA1236641A (en) 1988-05-10
EP0172636B2 (en) 1992-11-11
EP0171907B2 (en) 1994-08-10
CA1256638A1 (en)
CA1236641A1 (en)
BG61520B2 (en) 1997-10-31
AT39936T (en) 1989-01-15
HK19592A (en) 1992-03-20
EP0172636B1 (en) 1989-01-11
DE3567470D1 (en) 1989-02-16
SG108191G (en) 1992-06-12
EP0172636A1 (en) 1986-02-26
US4677191A (en) 1987-06-30
EP0171907B1 (en) 1989-01-11
US4683288A (en) 1987-07-28

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Legal Events

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UEP Publication of translation of european patent specification
UEP Publication of translation of european patent specification
EELA Cancelled due to lapse of time