EP0601463A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Medical water-absorptive polymer and dressing for wound and medical bandage using the same
Assignee: Nitto Denko Corp
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Filing: 1993-12-01
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Granted: —
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Expires: 2013-12-01
Abstract
Abstract A medical water-absorptive polymer, a dressing for wound using the polymer and a medical bandage using the polymer are disclosed. The medical water-absorptive polymer comprising a medical water-absorptive polymer comprising an acrylic copolymer obtained by copolymerizing an acrylic composition comprising from 60 to 80% by weight of an alkoxyalkyl acrylate, from 20 to 40% by weight of an N-vinyllactam, and 10% by weight or less of a vinylcarboxylic acid.
Inventors
- 👤 Junichi C/O Nitto Denko Corporation Saito
- 👤 Tetsuji C/O Nitto Denko Corporation Sugii
- 👤 Toshiyuki C/O Nitto Denko Corporation Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 00:32
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61F; A61F13/00; A61F13/02; A61F13/0203; A61F13/0226; A61F13/0246; A61L15/585; A61F2013/00089; A61F2013/00217; A61F2013/00229; A61F2013/00361; A61F2013/00727; A61F2013/00748; A61F2013/00753; A61F2013/00761; A61F2013/00778; A61F2013/00782
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
44 words
A medical water-absorptive polymer comprising an acrylic copolymer obtained by copolymerizing an acrylic composition comprising from 60 to 80% by weight of an alkoxyalkyl acrylate, from 20 to 40% by weight of an N-vinyllactam, and 10% by weight or less of a vinylcarboxylic acid.
Claim 2
Dependent Claim
27 words
The medical water-absorptive polymer of claim 1, wherein the acrylic composition is further compounded with from 0.01 to 1% by weight of a multifunctional acrylate or methacrylate.
Claim 3
Dependent Claim
28 words
The medical water-absorptive polymer of claim 1, wherein the acrylic copolymer is further compounded with 40% by weight or less of a plasticizer and the mixture is crosslinked.
Claim 4
Dependent Claim
17 words
The medical water-absorptive polymer of claim 1, wherein the acrylic copolymer is subjected to a crosslinking treatment.
Claim 5
Dependent Claim
20 words
A dressing for wound comprising a film or a sheet formed from the medical water-absorptive polymer claimed in claim 1.
Claim 6
Dependent Claim
15 words
The dressing for wound of claim 5, wherein the film or the sheet is crosslinked.
Claim 7
Dependent Claim
15 words
The dressing for wound of claim 5, wherein the film or the sheet is dried.
Claim 8
Dependent Claim
33 words
The dressing for wound of claim 5, wherein a porous or hole-having pressure-sensitive adhesive layer is formed on the surface of the dressing for wound at the adhering side to a wounded portion.
Claim 9
Dependent Claim
32 words
The dressing for wound of claim 8, wherein a backing material is formed on the surface of the wound covering material opposite the side having the porous or hole-having pressure-sensitive adhesive layer.
Claim 10
Dependent Claim
19 words
A medical bandage comprising a film or a sheet formed from the medical water-absorptive polymer claimed in claim 1.
Claim 11
Dependent Claim
14 words
The medical bandage of claim 10, wherein the film or the sheet is crosslinked.
Claim 12
Dependent Claim
14 words
The medical bandage of claim 10, wherein the film or the sheet is dried.
Claim 13
Dependent Claim
31 words
The medical bandage of claim 10, wherein a porous or hole-having pressure-sensitive adhesive layer is formed on the surface of the medical bandage at the adhering side to a wounded portion.
Claim 14
Dependent Claim
30 words
The medical bandage of claim 13, wherein a backing material is formed at the side of the medical bandage opposite the side having the porous or hole-having pressure-sensitive adhesive layer.
References Cited (Backward Citations)
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