EP0439339A2
Expired / Lapsed
EP
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Water soluble algin fibers and production thereof
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1991-01-23
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Granted: —
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Expires: 2011-01-23
Abstract
Abstract There is disclosed water soluble algin fibers and such fibers which have antibiotics immobilized thereby. The water soluble algin fibers are produced by extruding an aqueous dope which contains water soluble algin into a large quantity of a hydrophilic organic solvent exemplified by acetone. The water soluble algin fibers which have antibiotic immobilized thereby are produced in the same manner by using a dope containing antibiotic.
Inventors
- 👤 Yoshinari Kobayashi
- 👤 Hiroshi Kamishima
- 👤 Satoshi Fukuoka
- 👤 Hideki Obika
- 👤 Tsutomu Asaoka
- 👤 Keishi Tenma
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 07:22
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/20; A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/28; A61L15/42; A61L15/44; D01F1/00; D01F1/02; D01F1/10; D01F1/103; D01F9/00; D01F9/04; A61L2300/00; A61L2300/40; A61L2300/404; A61L2300/406
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
4 words
Water soluble algin fiber.
Claim 2
Dependent Claim
10 words
Water soluble algin fiber having antibiotic immobilized thereon and/or therein.
Claim 3
Dependent Claim
38 words
Water soluble algin fiber as claimed in claim 1 or 2 wherein the water soluble algin comprises one or two or more of sodium, lithium, potassium, magnesium and ammonium alginates, algin organic amine salts, and algin ester derivatives.
Claim 4
Independent Claim
22 words
A method of producing water soluble algin fiber which comprises extruding an aqueous dope containing water soluble algin into hydrophilic organic solvent.
Claim 5
Dependent Claim
33 words
A method as claimed in claim 4 wherein the water soluble algin comprises one, two or more of sodium, lithium, potassium, magnesium and ammonium alginates, algin organic amine salts, and algin ester derivatives.
Claim 6
Dependent Claim
16 words
A method as claimed in claim 5 wherein the water soluble algin comprises a triethanolamine salt.
Claim 7
Dependent Claim
16 words
A method as claimed in claim 5 wherein the water soluble algin comprises propylene glycol alginate.
Claim 8
Independent Claim
26 words
A method as claimed in any of claims 4 to 7 wherein the dope contains antibiotic to produce water soluble algin fiber having antibiotic immobilized thereby.
Claim 9
Independent Claim
27 words
A method as claimed inany of claims 4 to 8 wherein the organic solvent comprises aliphatic alcohol of 1-3 carbons, e.g. selected from methanol, ethanol and isopropanol.
Claim 10
Independent Claim
34 words
A method as claimed in any of claims 4 to 8 wherein the organic solvent is selected from acetone, dioxane, ethylene glycol monomethyl ether, dimethyl sulfoxide, dimethylformamide, dimethylacetamide, acetonitrile, methyl ethyl ketone and phenol.
References Cited (Backward Citations)
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