Patent GB-353495-A (GB)
Title: Impregnated products and process of manufacture
IPC: D21H17/61
Filed: 1930-04-17
Abstract: Coagulating coal solutions are made from coal solutions prepared as described in Specification 268,372, [Class 50, Fuel, Manufacture of]. In an example a fairly concentrated coal solution, comprising 30 parts of coal in 70 parts by weight of dehydrated coke over tar is finely crushed and digested with one-quarter of its weight of solvent naphtha for about 24 hours. The resulting mass is homogenized in a mixing machine and subsequently run through a colloid mill.ALSO:Porous materials such as fabrics, fibres, cord and felt, are impregnated or coated with coal in solution or coal precipitated from solution for strengthening, toughening, frictional, adhesive, or decorative purposes and to produce an improved wearing surface.  Coal solutions such as are described in Specification 268,372, [Class 50, Fuel, Manufacture of], or coagulating coal solutions prepared therefrom by dispersion in solvent naphtha may be used.  To increase the fluidity of the solution it may be used hot or thinners such as coal-tar oils and water-gas tar oils or introfiers such as benzyl alcohol and orthochlorphenol may be added.  Water may also be used as a thinning agent, in the form of an emulsion or not.  Finely divided mineral fillers, coal, coke, soluble organic materials such as resin, insoluble organic materials such as cellulose particles or wood-flour, rubber or latex with ageing or curing substances such as sulphur or its compounds and accelerators such as diphenylguanidine or thiocarbanilide may be incorporated in the impregnating liquid. The material may be either heated or evacuated or both prior to impregnation which may be carried out with the use of reduced or elevated pressure or both.  A coal solution or a dissolving oil may be used to wet the material before impregnation.  Coating may be effected by cold or heated rollers or by brushing or spraying. The solvents and thinners may be wholly or in part removed by the use of vacuum, heat, or steam or other gases after impregnation. Precipitation of the coal from solution may be effected by saturating the impregnated material with volatile organic liquids such as gasoline, naphtha and turpentine.ALSO:A mulch paper for agricultural purposes consists of porous materials such as fabrics, fibres, paper, cardboard, and felt impregnated or coated with coal in solution or coal precipitated from solution.  Coal solutions such as are described in Specification 268,372, [Class 50, Fuel, Manufacture of], or coagulating coal solutions prepared therefrom by dispersion in solvent naphtha may be used.  To increase the fluidity of the solution it may be used hot or thinners such as coal-tar and water-gas tar oils or introfiers such as benzyl alcohol and orthochlorphenol may be added.  Water may also be used as a thinning agent, in the form of an emulsion or not.  Finely divided mineral fillers, coal, coke, soluble organic materials such as resin, insoluble organic materials such as cellulose particles or wood-flour, rubber or latex with ageing or curing substances such as sulphur or its compounds and accelerators such as diphenylguanidine or thiocarbanilide may be incorporated in the impregnating liquid. The material may be either heated or evacuated or both prior to impregnation which may be carried out with the use of reduced or elevated pressure or both.  A coal solution or a dissolving oil may be used to wet the material before impregnation.  Coating may be effected by cold or heated rollers or by brushing or spraying.  The solvents and thinners may be wholly or in part removed by the use of vacuum, heat, or steam or other gases after impregnation. Precipitation of the coal from solution may be effected by saturating the impregnated material with volatile organic liquids such as gasoline, naphtha and turpentine.  A compound sheet material may be made by superposing a layer of a coal solution composition on the impregnated material.ALSO:Porous materials such as wood, fabrics, fibres, paper, cord, cardboard, felt, brick, stone, concrete and coke are impregnated or coated with coal in solution or coal precipitated from solution for waterproofing, strengthening, toughening, frictional, adhesive, or decorative purposes, to produce an improved wearing surface and to prevent decay or corrosion.  Coal solutions such as are described in Specification 268,372, [Class 50, Fuel, Manufacture of], or coagulating coal solutions prepared therefrom by dispersion in solvent naphtha may be used.  To increase the fluidity of the solution it may be used hot or thinners such as coal-tar oils and water-gas tar oils or introfiers such as benzyl alcohol and orthochlorphenol may be added.  Water may also be used as a thinning agent, in the form of an emulsion or not.  Finely divided mineral fillers, coal, coke, soluble organic materials such as resin, insoluble organic materials such as cellulose particles or wood-flour rubber or latex with ageing or curing substances such as sulphur or its compounds and accelerators such as diphenylguanidine or thiocarbanilide may be incorporated in the impregnating liquid.  The material may be either heated evacuated or both prior to impregnation, which may be carried out with the use of reduced or elevated pressure or both.  A coal solution or a dissolving oil may be used to wet the material before impregnation.  Coating may be effected by cold or heated rollers or by brushing or spraying.  The solvents and thinners may be wholly or in part removed by the use of vacuum, heat, or steam or other gases after impregnation. Precipitation of the coal from solution may be effected by saturating the impregnated material with volatile organic liquids such as gasoline, naphtha and turpentine.ALSO:Airtight packages for food products are made from fabrics or paper, impregnated with coal in solution or coal precipitated from solution.  The impregnating medium preferably also contains wood tar or products thereof.  Coal solutions such as are described in Specification 268,372, [Class 50, Fuel, Manufacture of], or coagulating coal solutions prepared therefrom by dispersion in solvent naphtha may be used.  To increase the fluidity of the solution it may be used hot or thinners such as coal-tar oils and water-gas tar oils or introfiers such as benzyl alcohol and orthochlorphenol may be added.  Water may also be used as a thinning agent, in the form of an emulsion or not.  Finely divided mineral fillers, coal, coke, soluble organic materials such as resin, insoluble organic materials such as cellulose particles or wood-flour, rubber or latex with aging or curing substances such as sulphur or its compounds and accelerators such as diphenylguanidine or thiocarbanilide may be incorporated in the impregnating liquid. The material may be either heated or evacuated or both prior to impregnation which may be carried out with the use of reduced or elevated pressure or both.  A coal solution or a dissolving oil may be used to wet the material before impregnation.  The solvents and thinners may be wholly or in part removed by the use of vacuum, heat, or steam or gases after impregnation.  Precipitation of the coal from solution may be effected by saturating the impregnated material with volatile organic liquids such as gasoline, naphtha and turpentine.