Patent GB-147661-A (GB)
Title: Process for the oxidation of oils
Filed: 1920-07-08
Abstract: In the oxidation of oils by exposure to oxygen, air, or other gas containing oxygen a large reacting surface and easy separation of the viscid or solid product is obtained by mixing the oil with a dispersive medium or diluent that melts at a lower temperature than the product and so is separated by pressure or by centrifuging, or with one from which the product is separated by dissolving out the diluent or the product.  Accelerators of the reaction, such as lead or manganese compounds of resinous acid or other siccatives may be added, and linoleum cement may be made directly by addition of gum kauri, colophony, or other matters usually added to the oxidized oil. Dispersives or distributors mentioned are neutral or basic salts, such as sodium sulphate or chloride, which are removed from the finished product by washing with water, and tallow, Chinese tallow, paraffin wax, ceresine, stearine, colophony, and fully hydrogenated sunflower oil, which are melted to dissolve the oil, the solution being then sprayed or allowed to set and crushed or scraped to obtain a fine powder; or a porous form is obtained by blowing-in air during setting if its porosity is not formed naturally.  In an example, 750 kilos. completely hardened sunflower oil, 22.5 kilos. of manganese resinate, and 250 kilos. of linseed oil are melted together, allowed to set, powdered, melted and pressed.  In another, 650 kilos. sodium sulphate, and 350 kilos. train oil are mixed and treated with a current of air in a rotary drum that may be heated up to 110 DEG  C. until oxidation is complete.  The sulphate is removed by lixiviating with water, or the oxidized oil is extracted by a solvent.  In a third example, 800 kilos. perfectly hardened sunflower oil, 200 kilos. linseed oil, and 6 kilos. manganese resinate are melted, and air is driven into the mixture as it sets until it is pasty.  It is then poured into moulds and the porous slabs allowed to stand for 24 hours, melted, and pressed.  Specifications 209/60, 2057/71, and 2845/72 are referred to.ALSO:In the oxidation of oils by exposure to oxygen, air, or other gas containing oxygen a large reacting surface and easy separation of the viscid or solid product is obtained by mixing the oil with a dispersive medium diluent that melts at a lower temperature than the product and so is separated by pressure or by centrifuging, or with one from which the product is separated by dissolving out the diluent or the product.  Accelerators of the reaction, such as lead or manganese compounds of resinous acid or other siccatives may be added, and linoleum cement may be made directly by addition of gum kauri, colophony, or other matters usually added to the oxidized oil.  Dispersives or distributors mentioned are neutral or basic salts, such as sodium sulphate or chloride, which are removed from the finished product by washing with water, and tallow, Chinese tallow, paraffin wax, ceresine, stearine, colophony, and fully hydrogenated sunflower oil, which are melted to dissolve the oil, the solution being then sprayed or allowed to set and crushed or scraped to obtain a fine powder; or a porous form is obtained by blowing-in air during setting if this porosity is not formed naturally.  In an example, 750 kilos completely hardened sunflower oil, 22.5 kilos of manganese resinate and 250 kilos of linseed oil are melted together, allowed to set, powdered, turned over mechanically for about eight hours, melted and pressed.  In another, 650 kilos sodium sulphate and 350 kilos train oil are mixed and treated with a current of air in a rotary drum that may be heated up to 110 DEG  C. until oxidation is complete.  The sulphate is removed by lixiviating with water, or the oxidized oil is extracted by a solvent.  In a third example, 800 kilos perfectly hardened sunflower oil, 200 kilos linseed oil, and 6 kilos manganese resinate are melted, and air is driven into the mixture as it sets until it is pasty.  It is then poured into moulds and the porous slabs allowed to stand for 24 hours, melted, and pressed.  Specifications 209/60, 2057/71, and 2845/72 are referred to.