Patent EP0038628A2 successfully refreshed from Google Patents.
EP0038628A2
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Composite material of de-N-acetylated chitin and fibrous collagen, its production and use
Assignee: Kureha Corp
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Filing: 1981-03-20
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Granted: —
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Expires: 2001-03-20
Abstract
Abstract Problems with conventional collagen materials such as insufficient strength are overcome by a composite material of de-N-acetlylated chitin and fibrous collagen. This material may be prepared by bringing the de-N-acetylated chitin and the fibrous collagen into mutual contact in an aqueous acidic medium followed by deacidifying the product obtained. The fibrous collagen can be partially replaced by gelatin and/or soluble collagen. The composite material finds use in medical materials, as an edible casing for food and as a base material for immobilizing an enzyme.
Inventors
- 👤 Junichi Kosugi
- 👤 Tadaaki Kato
- 👤 Masayuki Funabashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
C; C12; C12N; C12N11/00; C12N11/02; C12N11/10; A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016; A61; A61L; A61L27/00; A61L27/14; A61L27/20; A61L27/26; A61L33/00; A61L33/0005; A61L33/0011; C08; C08L; C08L5/00; C08L5/08; Y; Y10; Y10S; Y10S128/00; Y10S128/08; Y10S128/22; Y10S623/00; Y10S623/915; Y10S623/916; Y10S623/917; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
9 words
A composite material comprising de-N-acetylated chitin and fibrous collagen.
Claim 2
Dependent Claim
9 words
A composite material comprising de-N-acetylated chitin and fibrous collagen.
Claim 3
Dependent Claim
12 words
A material according to claim 1, further comprising gelatin and/or soluble collagen.
Claim 4
Dependent Claim
19 words
A material according to claim 1 or 2, wherein the fibrous collagen has been previously cross- linked or acylated.
Claim 5
Dependent Claim
14 words
A material according to any one of the preceding claims, which is further cross-linked.
Claim 6
Dependent Claim
43 words
A process for preparing a composite material as claimed in any one of the preceding claims, which process comprises bringing de-N-acetylated chitin into contact with fibrous collagen and optionally gelatin and/or soluble collagen in an acidic medium and deacidifying the product thus obtained.
Claim 7
Dependent Claim
52 words
A process according to claim 5, wherein contact between the de-N-acetylated chitin and fibrous collagen is effected by mixing an aqueous acidic solution of the de-N-acetylated chitin and an aqueous dispersion of fibrous collagen or by immersing a material made of fibrous collagen in an aqueous acidic solution of the de-N-acetylated chitin.
Claim 8
Dependent Claim
23 words
A process according to claim 5 or 6, wherein the fibrous collagen has been cross-linked or acylated before contact with the de-N-acetylated chitin.
Claim 9
Dependent Claim
32 words
A process according to any one of claims 5 to 7, wherein deacidification-is effected by the addition of an aqueous alkaline solution, by removal of the acid by evaporation or by electrodeposition.
Claim 10
Dependent Claim
19 words
A process according to any one of claims 5 to 8, wherein the resultant composite material is further cross-linked.
Claim 11
Dependent Claim
46 words
Use of a composite material as claimed in any one of claims 1 to 4 or which has been produced by a process as claimed in any one of claims 5 to 9 in food, in medicine or as a base material for immobilizing an enzyme.
References Cited (Backward Citations)
No citation records indexed.
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