DE709738C - Process for the production of linoxyn-like products - Google Patents

Description

Process for making linoxyn-like products During manufacture Linoleum, artificial leather, etc. are used, linoxyn, which is dried by oxidation or semi-drying oils.

In the following, the word Linoxyn should not only refer to the oxidation product from linseed oil, but also that of other drying and semi-drying oils be understood. The oxidation of these oils to achieve its solid product is known to take place in various ways. You can z. B. the oxidation Carry out in heated oxidation rooms, where the oil runs over a cloth and slowly goes into the solid state. They are also heated and stirred in kettles Air through the oil. blown until the mass is gelatinized.

Furthermore, it is already known to eat linoxyn-like products from by oxidation thickened, drying oils .by treating them with non-oxidizing. strong, concentrated, oxygen-containing acids. In this known process, however, relatively large amounts of acid, 10% and more, which make it necessary to crush the mass obtained and to free it from the acid by washing it out.

In contrast, the present invention is that the thickened oils with a small amount, suitably less than i%, one or several such acids, such as. B. sulfuric acid, phosphoric acid or a sulfonic acid, intimately mixed.

The term “small amount” is to be understood here as meaning those amounts which are not harmful, can remain in the mass and therefore do not need to be washed out first, ie amounts up to about 20%. The one used in the linoleum industry lent addition of a little lime or chalk is sufficient B. to neutralize the remaining which acid. Drying or semi-drying oils which in a known way with the usual 0 .. expediently elevated temperature blown with air until a still liquid product with very high viscosity is obtained, and then treated with a small amount, expediently less than a product of an acid. For this you can z. B. use: sulfuric acid or phosphoric acid, sulfonated fatty oils, sulfonated castor oil, sulfonated aromatic compounds such as aromatic oxysulfonic acids, e.g. B. sulfonated phenol, naphthene sulfonic acids, naphtholsulfonic acids, sulfonic acids of aromatic amines, e.g. B. anilinesulfonic acids or naphthylamine sulfonic acids, aromatic aminooxysulfonic acids (Mmo or polysulfonic acids).

The treatment with sulfuric acid can be carried out in such a way that 0.100000000 sulfuric acid is intimately mixed with the oxidized oil. One can further add 0.100 of the acid mentioned and repeat this addition. until o, 5 o'o or io; ö or more have been added. Even. you can add 0.5 to i% or more of the acid mentioned at once and mix intimately with the viscous oil. It will take about 10 to 30 minutes for the acid to mix intimately with the oil. The mass is then left to stand for 2 to 6 hours so that gelatinization occurs.

In the same way, you can use phosphoric acid from spec. Use 1.75 % by weight, e.g. B. calculated in an amount of 0.2 to 2% on the weight of the oil.

The concentration of sulfuric acid can be 5o to Soo`oig while in the case of phosphoric acid it can be between 50 and 10000. One can use sulfonic acids in concentrated form, e.g. B. 50 to 10000 / oig, use. Even mixtures of these Acids can be used.

Both the treatments with sulfuric acid and with phosphoric acid and 'or sulfonic acid convert the thickened oil into a gelatinized mass. The speed at which gelatinization takes place and the firmness this mass depend on the amount and strength of the acids used; the bigger the percentage and strength of acid added, the faster the will Gelatinization will be over.

The acid is preferably added to your thickened oil at ordinary temperature. The gelatinized product is initially sticky; however, this property decreases if the oil remains for some time; away. The product gelatinized in this way can continue z. B. to 5ö during 8 to o hours or on i oo ° for 3 to `Hours to be heated. One then obtains W @@ - '''' Y elastic product with rubbery properties. The product obtained in this way is very elastic, both in the pure state and in a mixture with other substances. The duration of the heating and the temperature can be varied. The longer the time and the higher the temperature of the heating, the harder the end product will be. There is no significant darkening of the product, which in the absence of dark-colored pigments still has a fairly light color. In all cases the color is somewhat dependent on the color of the starting oil. The end product almost no longer sticks. If necessary, it can be pulverized and mixed with fillers, pigments or other substances.

The addition of the acid and the aftertreatment by heating can be done combine if necessary by adding the acid to the warm oil. Through this you save time, work and equipment.

The heating is not required and can also be used if necessary be omitted, especially if one wishes to obtain a softer product. The hardening process can also be carried out at higher temperatures, but will one at temperatures which are considerably above i oo °, z. B. from zoo to 300 °, get a stronger dark color of the product. Good hardening without darkening can also be achieved by letting the product stand for a few days or weeks.

The new process can be used either with an oil alone or as a mixture use of two or more oils. These oils can be used in terms of their drying Properties can be the same or different. You can also use mixtures of a well-drying one Use oil with preferably a small amount of a non-drying oil. All the usual fillers or additives used in the manufacture of linoleum, artificial leather etc. made of Linoxyn can be used in any desired amount to add.

Ground cork or other fillers, pigments, etc. can be used at add to each stage of the procedure. An acid neutralizing filler or such a pigment will only be added after the acid treatment has taken place.

Furthermore, the oil to be treated can first be bought at a zoo up to ¢ 0o ° some Houred long: heat so that .the oil before it is blown and one Acid treatment, optionally also heating, is subjected to polymerized and is thickened.

Except for the production of linoleum one can also use the product the most varied purposes with fillers such as wood flour and / or textile fibers the like, pigments, dyes, etc. mix; it can also be poured into molds or pressing or grinding and / or rolling.

The product can be used in the well-known way for Linoxyn (warm or cold) Rubber, substances replacing rubber, with the addition of fillers, dyes, Pigments, etc., rolled or ground.

The linoxyn-like products obtained by the present process -are, -if, no significant amounts of dark-colored or black pigments, Dyes or fillers have been added and the starting oils are not very Dark in color, light colored, which can be of particular advantage.

The end products are elastic; this elasticity is also transferred to the linoleum and the other floor coverings that are made from it. The floor coverings are resistant to wear and tear and have no unpleasant odor, even if you have turned away from raw, strongly smelling fish oil. Examples i. Linseed oil is blown with air at 100 ° until the viscosity, measured at 20 °, is 150 poises. After cooling, 0.0% 90% phosphoric acid is added with vigorous stirring. An increase in viscosity can already be seen during the addition. After a few hours, the mass has set and has the appearance of Linoxyn. By post-treatment in its heating chamber, which is brought to 50 °, an elastic, non-adhesive mass is obtained after 10 hours. -2. Sufficient manganese linoleate is added to a mixture of equal parts soybeans and sardine oil that 0.05% manganese, calculated as metal, is present. This mixture is blown at i 2o 'until a viscosity of 130 poises, measured at 2o °, is reached. After cooling, 0.3010 80% sulfuric acid is added with vigorous stirring. The mass thickens by itself; Thickening can be accelerated by heating to 50 to 60 °.

3. Linseed oil is heated to 30o ° and at this temperature for so long held until the viscosity of the stand oil formed is 3o Poisen (20 °). Man now cools down to 100 ° and blows air through until the viscosity is good Poisen (20 °) has risen. Now let it cool down completely and put it under vigorous stirring o, 2% 90% phosphoric acid. The gelatinized product obtained can be post-treated as in example i.

Claims (3)

PATENT CLAIMS i. Process for the production of linoxyn- @ like Products made from drying or semi-drying oils thickened by oxidation and by treating them with strong, concentrated, non-oxidizing, Oxygen-containing acids, characterized in that these oils with a small amount, expediently less than 10'o, of one or more such acids, such as B. sulfuric acid, phosphoric acid or a sulfonic acid, intimately mixed. 2. The method according to claim i, characterized in that the drying and / or semi-drying oil is subjected to polymerization by heating before oxy- @ dation. 3. The method according to claim i and 2, characterized in that after the addition the acid is heated, preferably to a temperature between 50 and 10 °, lets follow.