Patent GB-452944-A (GB)
Title: Improvements in or relating to mouldable compositions and the manufacture of linoleum or the like
IPC: D06N1/00
Filed: 1935-06-25
Abstract: A drying or semi-drying oil such as linseed, perilla, rubber-seed or soya bean oil is oxidized under conditions unfavourable to polymerization until 60 per cent or more is insoluble in petroleum ether, then unoxidized and nonhardening ingredients soluble in petroleum ether are removed therefrom--e.g. by dissolving out with petroleum ether or petroleum naphtha --and the remainder of the oxidized oil is mixed with a filler to make a mouldable composition suitable for making linoleum.  The remainder, which may comprise 1 part of unoxidized and non-hardening constituents to 12 parts of other oil constituents, is dissolved in toluol, butyl acetate, xylene or high flashpoint coal-tar naphtha to form a 60 to 80 per cent solution.  Ester gum, congo ester, paracoumarone resin, oil-soluble or oil-reactive phenol-aldehyde resins, or alkyd resins may be added to this solution or to the oil before oxidation.  Vegetable fillers, such as ground cork or wood flour, or mineral fillers, such as whiting, china clay, or the substance known under the Registered Trade Mark "Asbestine" may be added to the moulding composition.ALSO:A drying or semi-drying oil such as linseed, perilla, rubber-seed or soya-bean oil is oxidized under conditions unfavourable to polymerization until 60 per cent or more is insoluble in petroleum ether, then unoxidized and non-hardening ingredients soluble in petroleum ether are removed therefrom, and the remainder of the oxidized oil is mixed with a filler to make a mouldable composition suitable for making linoleum.  Preferably the oxidation is discontinued prior to substantial coagulation of the oxidized oil. Thus, 3 parts of linseed oil and 1 part of wood rosin are heated in a Wood-Bedford type of oxidizer to about 240 DEG  F. until the resin is dissolved.  The temperature is then lowered to about 180 DEG  F., a drier, e.g. 0,04 per cent of cobalt linoleate, is added, and the batch is blown with air for 20--30 hours.  When a tested sample just fails to dissolve in ethyl ether the oxidation is discontinued, the batch is cooled and unoxidized and non-hardening ingredients are dissolved out with petroleum ether or petroleum naphtha.  The remainder, which may comprise 1 part of unoxidized and non-hardening constituents to 12 parts of other oil constituents, is heated to remove solvent and preferably dissolved in toluol, butyl acetate, xylene or high flash-point coal-tar naphtha to form a 60 to 80 per cent solution.  Rosin, ester gum, fused congo, congo ester, kauri gum, paracoumarone resin, oil-soluble or oil-reactive phenol-aldehyde resins, alkyl resins and amberol may be added to this solution or to the oil before oxidation.  The moulding composition may consist of 25 to 50 per cent of the oil-resin solution, 25 to 35 per cent of vegetable fillers, e.g. ground cork or wood flour, and 25 to 40 per cent of mineral fillers, e.g. whiting, china clay, or the substance known under the Registered Trade Mark "Asbestine." Specifications 209/60, 7742/93, and 1021/10, [all in Class 91], are referred to.ALSO:A drying or semi-drying oil such as linseed, perilla rubber-seed or soya-bean oil is oxidized under conditions unfavourable to polymerization until 60 per cent or more is insoluble in petroleum ether, then unoxidized and non-hardening ingredients soluble in petroleum ether are removed therefrom-e.g. by dissolving out with petroleum ether or petroleum naphtha-and the remainder of the oxidized oil is mixed with a filler to make a mouldable composition suitable for making linoleum.  The remainder, which may comprise 1 part of unoxidized and non-hardening constituents to 12 parts of other oil constituents, is preferably dissolved in toluol, butyl acetate, xylene or high flash-point coal-tar naphtha to form a 60 to 80 per cent solution. Rosin, ester gum, fused congo, congo ester, kauri gum, paracoumarone resin, oil-soluble or oil-reactive phenol - aldehyde resins, alkyd resins and amberol may be added to this solution or to the oil before oxidation.  The moulding composition may consist of 25 to 50 per cent of the oil-resin solution, 25 to 35 per cent of vegetable fillers, e.g. ground cork or wood flour, and 25 to 40 per cent of mineral fillers, e.g. whiting, china clay, or the substance known under the Registered Trade Mark "Asbestine."  Specifications 209/60, [Class 32], 7742/93, [Class 91], and 1021/10, [Class 22], are referred to.