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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0850375 (1977-11-10) |
우선권정보 | GB-0047074 (1976-11-11) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 568 인용 특허 : 3 |
A wound dressing material, particularly for burns, comprises a sheet of synthetic plastics material which is permeable to water vapor and air, preferably a polyurethane produced by polymerization of an isocyanate capped polyoxyethylene polyol, without any substantial amount of water present, using a
A wound dressing material, particularly for burns, comprises a sheet of synthetic plastics material which is permeable to water vapor and air, preferably a polyurethane produced by polymerization of an isocyanate capped polyoxyethylene polyol, without any substantial amount of water present, using a cross-linking agent which reacts with the isocyanate groups. The polyol and cross-linking agent, and preferably also an alkylene oxide surfactant, are agitated to form an aerated mix, spread on a release paper, and heated so that polymerization begins in the exposed upper surface, so as to form a sheet having a dense outer region which is impervious to liquids, a cellular region beneath the dense region, and a smooth glazed surface for application to a wound.
A wound dressing material, comprising a non-laminated sheet of a synthetic plastics material which is permeable to water vapour and to air and which is impermeable to liquid exudate, said material having on one side a smooth glazed surface for application to a wound, a closed cell cellular region be
A wound dressing material, comprising a non-laminated sheet of a synthetic plastics material which is permeable to water vapour and to air and which is impermeable to liquid exudate, said material having on one side a smooth glazed surface for application to a wound, a closed cell cellular region behind the smooth surface, and a more dense region behind the closed cell cellular region, so that on contact with liquid exudate from a wound the dressing material will absorb a limited amount of exudate but prevent it from passing through the dressing material.
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