WATER BARRIER MATERIAL AND CABLE MADE THEREFROM

• Main Authors: KUWABARA, TSUNEO, FUJISAWA, NORIAKI, KUKITA, SHIGEZOU, SAKAI, YASURO
• Format: Patent
• Language: English; French; German
• Published: 24.03.1993
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; CURRENT COLLECTORS; ELECTRICITY; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR; INSULATORS; LAUNDERING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LINE CONNECTORS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SPRAYING OR ATOMISING IN GENERAL; TEXTILES; TRANSPORTING; TREATMENT OF TEXTILES OR THE LIKE; WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A water barrier material which comprises a specified water-insoluble and flexible rubbery binder (5) and highly water-absorbent polymer particles (4) having a specified diameter, is constituted of a coating layer (2) having a specified density and a solid support (3) holding the layer (2), and satisfies at least the following requirements: 1) the density of the coating layer is 0.65 to 1.00 g/cm , 2) the weight ratio of the polymer particles to the rubbery binder as the major constituents (90 wt % or above) of the coating layer is 50-90 : 50-10 by wt %, and 3) 55 to 95 wt % of the polymer particles having diameters of 45 to 425 mu m. Le matériau ne laissant pas passer l'eau décrit, qui contient un liant caoutchouteux spécifié flexible et insoluble dans l'eau (5) ainsi que des particules polymères fortement hydro-absorbantes (4) présentant un diamètre spécifié, est consituté par une couche de revêtement (2) présentant une densité specifié et par un support solide (3) soutenant la couche (2) et il satisfait au moins aux conditions suivantes: 1) la densité de la couche de revêtement est comprise entre 0,65 et 1,00 g/cm3; 2) le rapport en poids entre les particules polymères et le liant caoutchouteux formant les composants principaux (90% en poids ou plus) de la couche de revêtment est de 50-90/50-90 % en poids; et 3) 55 à 95 % en poids des particules polymères possèdent des diamètres compris entre 45 et 425 mum.