Water-swellable resin coating composition and optical cable using the same

• Main Authors: FUJIURA, YOJI, MITA, KOUJI, KURIYAMA, SATOSHI, KOIKE, MASAMI
• Format: Patent
• Language: English; French; German
• Published: 01.03.1995
• Edition: 5
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CABLES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CONDUCTORS; CORRECTING FLUIDS; DYES; ELECTRICITY; FILLING PASTES; INKS; INSULATORS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PHYSICS; POLISHES; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention relates to a water-swellable resin coating composition which comprises a resin having hydrolyzable silyl groups and a water-insoluble water-absorbing polymer; and also to a water-excluding material comprising a water-swellable resin coating formed on a backing material such as nonwoven fabric. A layer of this water-swellable resin coating composition coated on paper or like backing material (and dried after coating, if necessary), can absorb water at a very high speed and in large quantity. In addition, the resin composition has good coatability on the backing material. Thus, the water-swellable resin coating composition is useful as water-absorbing paint. The water-excluding material according to the invention has high water absorbing speed and capacity, as well as good adhesion to the backing material, and optical fiber cables or electric cables using this material are excellent in their water-excluding capacity.