C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
216/3, 400/6410,
C09J 7/04 (2006.01) C09J 133/26 (2006.01) C09J 157/00 (2006.01) E04F 13/00 (2006.01)
Patent
CA 1144290
ABSTRACT A liquid polymeric composition comprises a suspension in an organic liquid of particulate water insoluble but water swellable polymer, the particles being less than 10 microns in size. To reduce viscosity in water the swellable polymer may be a copolymer and/or a water soluble polymer may be included. A composition of polymer particles that are swellable and contain both soluble and insoluble polymer can be made by inverse emulsion polymerisation. An aqueous adhesive, that may be made by mixing this composition with water, comprises water swollen particulate polymer that may be a copolymer and that may be used with a dissolved polymer in order to reduce the viscosity. Pregummed substrates, such as wallpaper, that can be rendered adhesive by contacting with water are obtained by applying the aqueous or non-aqueous composition to the substrate and drying it on the substrate. Wallcovering can be stuck to a surface using the aqueous adhesive.
333388
Clarke John B.
Flesher Peter
Allied Colloids Limited
Stewart & Kolash Ltd
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