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143 条记录 (耗时 0.014 秒)

    Acrylic fibres
    12.
    发明公开
    Acrylic fibres 失效
    丙烯纤维

    公开(公告)号：EP0294135A3

    公开(公告)日：1989-08-30

    申请号：EP88304918.1

    申请日：1988-05-31

    申请人： COURTAULDS PLC

    发明人： Heald, Alexander James ,  Ginns, Peter ,  Robinson (nee Sanders), Janet ,  Potter, Christopher David

    IPC分类号： D01F6/18 ,  D01D5/247 ,  D01F11/06

    CPC分类号： D01F11/06 ,  D01F6/18

    摘要： Porous acrylic and modacrylic fibre having a porosity above 0.3 cm³g⁻¹, an internal surface area of at least 50 m²g⁻¹ (when its decitex is greater than 2.5) or at least 35 m²g⁻¹ (when its decitex is not more than 2.5), and a water imbibition of at least 65% (when its decitex is greater than 2.5) or at least 55% (when its decitex is not more than 2.5) and other porous acrylic and modacrylic fibre can be produced by contacting never-dried, standard wet-spun fibre with a water-miscible organic liquid which is a non-­solvent for the fibre and has a boiling point below the glass transition temperature of the fibre to exchange the water in the fibre for the organic liquid, and then drying the fibre so as to remove the organic liquid without collapsing the fibre. Porous fibre made in this way or other porous acrylic or modacrylic fibre in dry or never-­dried state can be impregnated with an additive either by immersion in a solution of the additive in an organic liquid of the above type or by immersion in a solution or liquid dispersion of the additive in a different liquid followed by exchange of that liquid with an organic liquid of the above type, followed in either case by drying to remove the liquid. The drying conditions can be controlled to provide uncollapsed fibres, fully collapsed fibres or, preferably, novel partially collapsed fibres, from which the additive is released in a sustained fashion at a rate determined by the degree of collapse of the fibres.

    MARKING
    14.
    发明公开
    MARKING 失效
    在生产层的永久图像。

    公开(公告)号：EP0301057A1

    公开(公告)日：1989-02-01

    申请号：EP88901442.0

    申请日：1988-02-12

    申请人： COURTAULDS PLC

    发明人： HAWKINS, Michael ,  BOWYER, Arthur, George

    IPC分类号： C09K9 ,  B41M3 ,  G03C1 ,  G03C5

    CPC分类号： B41M3/142 ,  G03C1/73 ,  G03C5/56 ,  Y10S430/163

    摘要： Un dispositif de marquage comprend une couche, constituée de préférence par un matériau formant un film et contenant un composé photochromique. Celui-ci est capable de changer de couleur lorsqu'il est exposé à un rayonnement UV mais peut être transformé en un composé en permanence non photochromique, de préférence par sur-exposition à un rayonnement UV. On obtient une image dans la couche en transformant le composé photochromique en un composé en permanence non photochromique dans une ou plusieurs zones choisies. Lorsqu'on regarde ensuite la couche soumise à un rayonnement UV, on peut voir une image incolore du composé non photochromique sur un fond de composé photochromique coloré.

    Marking
    16.
    发明公开
    Marking 失效
    Markierungsverfahren。

    公开(公告)号：EP0279600A1

    公开(公告)日：1988-08-24

    申请号：EP88301177.7

    申请日：1988-02-12

    申请人： COURTAULDS PLC

    发明人： Hawkins, Michael ,  Bowyer, Arthur George

    IPC分类号： G03C1/72 ,  B41M3/14 ,  C09K9/02

    CPC分类号： B41M3/142 ,  G03C1/73 ,  G03C5/56 ,  Y10S430/163

    摘要： A marking comprises a layer, preferably of film-­forming material, which contains a photochromic compound. The photochromic compound is capable of changing colour when exposed to uv light, but can be converted to a perman­ently non-photochromic compound, preferably by over-­exposure to uv light. An image is formed in the layer by converting the photochromic compound to a permanently non-photochromic compound in one or more selected areas. When the layer is subsequently viewed under uv light a colourless image of non-photochromic compound can be seen on a background of coloured photochromic compound.

    摘要翻译： 标记包括含有光致变色化合物的优选成膜材料的层。 光致变色化合物在暴露于紫外光下时能够改变颜色，但可以转化为永久非光致变色化合物，优选通过过度暴露于紫外光。 通过在一个或多个选定区域中将光致变色化合物转化为永久非光致变色化合物，在该层中形成图像。 当在紫外光下观察该层时，可以在有色光致变色化合物的背景上看到非光致变色化合物的无色图像。

    WOUND DRESSING
    17.
    发明公开
    WOUND DRESSING 失效
    伤口敷料

    公开(公告)号：EP0236104A3

    公开(公告)日：1988-08-17

    申请号：EP87301788

    申请日：1987-03-02

    申请人： COURTAULDS PLC

    发明人： BURROW, THOMAS RICHARD

    IPC分类号： A61F13/02

    CPC分类号： A61F13/023

    摘要： A dressing for wounds comprises a waterproof, water-­ vapour-permeable polymer film (12, 22) secured within a frame (11, 21) of water-vapour-permeable polymer foam, the water-vapour permeability being at least 300 grams per square metre per 24 hours at 40°/80 per cent relative humidity. One face of the foam frame (11, 21) is coated with a pressure-sensitive adhesive which secures the film (12, 22) to the frame (11, 21) and which extends outwards beyond the film (12, 22) to provide an adhesive surface for securing the dressing to the skin around the wound. The waterproof, water-vapour-permeable polymer film may act as the facing layer (12) of the dressing in contact with the wound or an absorbent material may be secured within the foam frame (21) over the film (22) by means of the adhesive to form a wound-facing layer (26).

    摘要翻译： 用于伤口的敷料包括固定在水蒸气可渗透的聚合物泡沫的框架（11,21）内的防水，可透过水汽的聚合物膜（12,22），所述水蒸气可透过性为至少300克每平方 在40°/ 80％相对湿度下每24小时计量一次。 泡沫框架（11,21）的一个面涂覆有压敏粘合剂，该压敏粘合剂将薄膜（12,22）固定到框架（11,21）并且向外延伸超过薄膜（12,22）以提供 用于将敷料固定到伤口周围皮肤的粘合表面。 防水，水蒸气可渗透的聚合物膜可用作与伤口接触的敷料的面层（12），或者吸收材料可通过膜（22）固定在膜（22）上的泡沫框架（21）内 该粘合剂形成面向伤口的层（26）。

    POLYMER SOLUTIONS
    18.
    发明授权
    POLYMER SOLUTIONS 失效
    聚合物溶液

    公开(公告)号：EP0111518B1

    公开(公告)日：1986-10-29

    申请号：EP83901828.0

    申请日：1983-06-07

    申请人： COURTAULDS PLC

    发明人： LAITY, Peter Raffaele

    IPC分类号： C08J3/08 ,  C08L1/02

    CPC分类号： D01D1/02 ,  C08J3/096 ,  C08L1/02 ,  D01F2/00

    摘要： The stability against degradation of a solvent for organic polymers comprising a hydrated tertiary amine N-oxide is improved by the incorporation of a stabilising additive selected from phosphoric acids, phosphate salts, phosphonic acids, phosphonate salts and complexes of any of the foregoing with occluded metal ions. The stabilising additive also helps to stabilise polymers dissolved in the solvent against degradation, particularly cellulose. A preferred additive is sodium hexametaphosphate. In a process for forming fibres or film from amine oxide solutions of cellulose, the stabilising additive helps to prevent discolouration of the fibres or film by degradation products and excessive reduction in the degree of polymerisation of the cellulose which can cause deterioration in strength of the fibres or film.