Patent GB-886375-A (GB)
Title: Improvements relating to flooring
Inventor: SAUL WALTER
IPC: D06N3/04
Filed: 1957-06-26
Abstract: Floors or decks are coated firstly with an underlayer of a composition containing 30% to 95% by volume of filler, and 70% to 5% of a binder consisting of natural or synthetic rubber or a synthetic resin, and containing substantially no chlorosulphonated polyolefine, and then with a composition containing filler and chlorosulphonated polyolefine.  The second layer is, and the first layer may be, applied from a dispersion-solution i.e. a solution of the resinous component in a volatile organic solvent, the filler being dispersed therein.  The top layer may also contain a terpene-modified phenolic resin, a coumarone-indene or coumarone-styrene resin, a polystyrene resin, an alkyd resin or other thermoplastic resin compatible with the chlorosulphonated polyolefine.  Cross-linking agents such as litharge or magnesia in conjunction with hydrogenated wood rosin, or "tribasic lead maleate" and hydrogenated wood rosin, and accelerators such as mercaptobenzthiazole, benzthiazyl disulphide, tetramethyl thiuram disulphide or piperidine pentamethylene dithiocarbamate, and anti-oxidants may also be present in the top layer.  The binder for the under-layer may be a mixture of polyvinyl chloride and butadiene-acrylonitrile copolymer, neoprene, polystyrene, butadiene-styrene co-polymer, acrylate or methacrylate polymers, styrene-acrylonitrile co-polymers, polyvinyl acetate, co-polymers of vinyl acetate with vinyl chloride, vinylidene chloride or an acrylate, natural or reclaimed rubber or rubber-resin mixtures. The filler may be fibrous e.g. asbestos, or non-fibrous e.g. powdered limestone or mixtures; for the top layer it is generally non-fibrous. Pigments such as carbon black, silica and silicates, iron oxide or titanium dioxide may be included.  The compositions may be applied by trowel.  A thin intermediate sealing coat of resinous material may be applied between the main layers. Specifications 834,224 and 835,693 are referred to.ALSO:Floors or decks are coated firstly with an underlayer of a composition containing 30% to 95% by volume of filler, and 70% to 5% of a binder consisting of natural or synthetic rubber or a synthetic resin, and containing substantially no chlorosulphonated polyolefine, and then with a composition containing filler and chlorosulphonated polyolefine.  The second layer is, and the first layer may be, applied from a dispersion-solution-i.e. a solution of the resinous component in a volatile organic solvent, the filler being dispersed therein.  The top layer may also contain a terpene-modified phenolic resin, a coumarone-indene or coumarone-styrene resin, a polystyrene resin, an alkyd resin or other thermoplastic resin compatible with the chlorosulphonated polyolefine.  Cross-linking agents such as litharge or magnesia in conjunction with hydrogenated wood rosin, or "tribasic lead maleate" and hydrogenated wood rosin, and accelerators such as mercapto-benzthiazole, benzthiazyl disulphide, tetramethyl thiuram disulphide or piperidine pentamethylene dithiocarbamate, and anti-oxidants may also be present in the top layer.  The binder for the under-layer may be a mixture of polyvinyl chloride and butadiene-acrylonitrile copolymer, neoprene, polystyrene, butadiene-styrene co-polymer, acrylate or methacrylate polymers, styrene-acrylonitrile co-polymers, polyvinyl acetate, co-polymers of vinyl acetate with vinyl chloride, vinylidene chloride or an acrylate, natural or reclaimed rubber or rubber-resin mixtures. The filler may be fibrous, e.g. asbestos, or non-fibrous, e.g. powdered limestone or mixtures; for the top layer it is generally non-fibrous. Pigments such as carbon black, silica and silicates, iron oxide or titanium dioxide may be included.  Specifications 834 224 and 835 693 are referred to.