US1842857A - Process of the manufacture of alpha composition of linoleum - Google Patents

Description

stance in the case of roof-coverings,

Patented jan. 26,

PATEN mszno 30min, or nunnns'r, nuneanzassmnon. no mo neu ral, or

BUDAPEST, mmeamr PROCESS OF THE BE 01 A COMPOSITION OF LINOLEUI Re Drawing. Application filed October 29,

My invention relates to a process of producing a composition of matter wh ch is especially adapted for impregnatlng or covering textile fabrics but, of course, may be used as well for covering or impregnating any other material or object which it is desired to render waterproof or to protect against the infiuence of'chemicals.

Numerous processes have already been proposed for rendering textile fabrics water proof; they are however all surpassed by the present processes regards quality and cheap'ness. Beside the tilts which may be produced at a far lower price than at prescut, the invention makes it possible to produce, among other things, cheap waterproof bags and similar articles.

Hitherto, for impregnation purposes up till now chiefly linseed oil,v rubber, tar, natural and artificial asphalts, paraffin and the like have been used', but these are either too expensive, as for example in the case of rubber, or else they require some expensive process, such as for instance the manufacture'of linoleum. Pitch-asphalt materials have been used for impregnating purposes, as for inbut the goods producd have but little heat resistance (they are sticky in summer and they-burst in Winter) and thus they do not form a solution of the impregnation problem. The industry strongly feels the lack of an impregnating material which is equally elastic in summer and in winter but is considerably cheaper than rubber or linoleum and which would make it possible to produce cheaply bags adapted for the purposes of shipping chemicals, as for instance carbide, lyestone or the like. By lyestone is meant calcium hydroxide 1 in solid form.

It is well known that the oxidation prodnets of the unsaturated acids of linseed oil, the so called linoxyn compounds, may be distinguished by their great heat elasticity (linoleum) Up to now the manufacture of linoleum was rendered expensive'not only by the high price of linseed oil but also by the lengthy process of oxidation and the expensive technics of the finished linoxyn.

According to the present invention linseed 1929, Serial No. 403,350, and in Hungary October 19, 1928.

oil, or some other drying or oxidizable ve etable oil, is also used as a basic material or the manufacture of the impregnating material, but the oxidation of the same is performed by means of substances containing chemically bound oxygen. In this manner the process is rendered much quicker and cheaper than the present processes.

It has already been proposed to oxidize linseed oil by means of nitric acid (oil-rubber) or to treat the same with sulphur (faktis) but all these processes. besides being still too expensive, do not yield a product of. suitable quality, since the strength of the compositions thus obtained is so small that the same may be ground between the fingers.

The rocess according'to the present inven-' tionsu stantially conslsts in boiling linseed oil, or some other drying oil, as for instance castor oil, sunflower oil, or the like, separately or mixed with one another, with materials containing the S0 radical, preferably with the acid sludge obtained as a residue in oil refining. For rendering the product cheaper, resin or resin-like organic substances, as for instance asphalt, may be mixed with the oils. The boilin is continued until the material has turne into a homogeneous, foamless mass, which upon being cooled down, forms a rubber-like substance.

If textile fabrics are impregnated with this material a linoleum-like product will be obtained, the tearing strength of which is far greater than that of the textile fabric now used, and may increase to an amount four times as large.

Jute fabrics impregnated with this material may preferably be used for the manufacture of bags, which will be strong, water-' proof and chemical-proof.

The impregnating substance produced according to the present invention has the advantage over the pitch asphalt impregnating substances that in consequence of its linoxyn content it does not stick, and is much softer and much more elastic than these materials.

Another form of the process consists in not fully oxidizing the basic material up to date till the formation of linoxyn; this is attained by adding a smaller amount of oxidizing agent to the basic material than is necescomposition consisting in heating a vegetable sary for fully oxidizing the same, and the impregnation is effected by means of this incompletely oxidized substance. The product thus obtained is dried by means of heated air, which operation may be termed a postimpregnation oxidizing. To accelerate this drying process siccatives may preferably be added to the material. Since the siccatives accelerate not only the drying up but also the oxidizing process, the same may preferably be employed for this purpose too, even when the oxidizing is finished at the boiling operdrying oil to 180 to 200 C., mixin the said drying oil at this temperature wit mineral oil acid sludge containing the S0 radicle, and boiling the mixture until a homogeneous composition is obtained.

In testimony whereof I have aflixed my signature.

LASZLO BOLGAR.

ation and a post-lmpregnation oxidizing is dispensed with.

very important feature of the process is that the acid sludge is only added to an oil or oil-resin mixture of high temperature, one over 180 to 200 C. only, because in the contrary case the oxidation process is not carried out to the required extent, the material is formed into lumps, and it becomes coked on the walls of the cauldron.

The impregnation with the composition obtained may be effected in any known manner. If the composition is rolled in liquid or in plastic form on one side of the textile fabric a material will be obtained which will permit the manufacture of bags covered with a protecting layer on the inside only, which will prevent t e bag from deteriorating under the influence of caustic materials. In this case the fabric on the outside retains its original appearance.

If it is desired to soften the composition described mineral oils may be added to the material during or after the oxidation process.

As a definite process the following example is given: 25 kilograms linseed oil are heated to 200 (3., whereupon kilograms acid sludge are'added to the oil. The mixture is then heated under constant stirring until a. homogeneous mass is obtained. By this heat ing the mixture attains a temperature of 300 C. The acid sludge is to be washed with water before its use.

Having described my invention ll claim:

1. A process for manufacturing a linoleum composltion consisting in mixing a vegetable drying oil with mineral oil acid sludge con" taining the S0 radicle, and boiling the mixture.

2. A process for manufacturing a linoleum composition consisting in heating a vegetable drying oil to 180-200 G, mixmg the said. drying oil at this temperature with mineral oil acid sludge containing the 550. radicle, and boiling the mixture.

3. A process for manufacturing a linoleum composition consisting in mixing a vegetable drying oil with mineral oil acid sludge containing the S0 radicle, and boiling the mixture until a homogeneous composition is obtained.

4. A process for manufacturmg a linoleum