Patent GB-349638-A (GB)
Title: Improvements in impregnated and/or smoothed articles and mixtures for their production
IPC: B27K3/15
Filed: 1930-03-03
Abstract: Polymerization products of alkylene oxides, produced for example as described in Specification 346,550, [Group IV], are used for impregnating or superficially smoothing articles having a rough or porous surface such as wood, paper, leather, &c.  Pastes, solutions, or emulsions of the products may be used, and waxes, resins, cellulose derivatives, condensation products of urea and formaldehyde, of phenols and aldehydes, or polyhydric alcohols and polybasic acids, or of vinyl compounds, may be added.  The polymerization products of ethylene oxide are more or less soluble in water and many organic solvents, and the polymerization products of propylene and higher oxides are soluble only in organic solvents. Homogeneous solutions of these products with waxes, wax-like substances such as Montan wax, colophony, copal, mastic, artificial resins, fats, oils such as castor oil, esters of phthalic, tartaric or phosphoric acids, and like impregnating agents may be obtained. Colouring materials and fillers may be incorporated in the solution. Articles may be dipped into or coated with solutions or pastes or melted mixtures containing the products.  The solvents used are quickly evaporated, so that the solutions may be used as filler coats under cellulose lacquers or varnishes of any kind.  Examples: (1) Wooden boards are treated for 1 hour under a pressure of 100 atmospheres with a 4 per cent aqueous solution of a wax-like polymerization product of ethylene oxide produced according to Example 1 of Specification 346,550. (2) Leather is treated with a 20 per cent solution of the product referred to in Example 1.  A flexible leather is produced to which nitrocellulose lacquer adheres well.  (3) 100 parts of a 30 per cent solution in ethyl alcohol of a phenol-formaldehyde condensation product are mixed with 20 parts of a 30 per cent solution of the product referred to in Example 1.  Paper is soaked in the mixture and heated under pressure.  (4) Parchment paper is p  dipped into a solution of 20 parts of urea-formaldehyde condensation product and 2 parts of a viscous polymerization product of 1,2-propylene oxide prepared as in Example 3 of Specification 346,550, in ethyl alcohol.  A transparent paper suitable for wrapping is obtained.  (5) A wood stain is prepared by dissolving a water soluble polymerization product of ethylene oxide prepared as in Example 1 of Specification 346,550 in water and adding water soluble dyes.  (6) A grain filler for wood is made by dissolving the product referred to in Example 1 in ethyl alcohol and toluene.  (7) The product referred to in Example 1 is dissolved in ethyl alcohol and heavy spar is added.  The paste produced is rubbed on oak boards with a pad, after which a pyroxylin lacquer is sprayed on.  (8) A small proportion of an oily viscous product made from 1,2-propylene oxide is added to the paste in Example 7.ALSO:Polymerization products of alkylene oxides, produced for example as described in Specification 346,550, are used for impregnating or superficially smoothing articles having a rough or porous surface such as wood, paper, leather, &c.  Pastes, solutions, or emulsions of the products may be used, and waxes, resins, cellulose derivatives, colouring matters and condensation products of urea and formaldehyde, of phenols and aldehydes, of polyhydric alcohols and polybasic acids, or of vinyl compounds, may be added.  Articles may be dipped into or coated with solutions or pastes or melted mixtures containing the products. In one example, a wood stain is prepared by dissolving a water soluble polymerization product of ethylene oxide prepared as in example 1 of Specification 346,550 in water and adding water soluble dyes.ALSO:Polymerization products of alkylene oxides, produced for example as described in Specification 346,550, [Group IV], are used for impregnating or superficially smoothing articles having a rough or porous surface such as wood, paper, leather, &c.  Pastes, solutions, or emulsions of the products may be used, and waxes, resins, cellulose derivatives, condensation products of urea and formaldehyde, of phenols and aldehydes, of polyhydric alcohols and polybasic acids, or of vinyl compounds, may be added.  The polymerization products of ethylene oxide are more or less soluble in water and many organic solvents, and the polymerization products of propylene and higher oxides are soluble only in organic solvents. Homogeneous solutions of these products with waxes, wax-like substances such as montan wax, colophony, copal, mastic, artificial resins, fats, oils such as castor oil, esters of phthalic, tartaric or phosphoric acids, and like impregnating agents may be obtained. Colouring materials and fillers may be incorporated in the solution. Articles may be dipped into or coated with solutions or pastes or melted mixtures containing the products.  The solvents used are quickly evaporated, so that the solutions may be used as filler coats under cellulose lacquers or varnishes of any kind.  Examples: (1) A grain filler for wood is made by dissolving a wax-like polymerization product of ethylene oxide produced according to Example (1) of Specification 346,550, in ethyl alcohol and toluene; (2) the product referred to in Example (1) is dissolved in ethyl alcohol and heavy spar is added. The paste produced is rubbed on oak boards with a pad, after which a pyroxylin lacquer is sprayed on; (3) a small proportion of an oily viscous product made from 1.2-propylene oxide is added to the paste in Example (2).