DE3859C - Process for the use of rubber oil, which was obtained from old rubber goods - Google Patents

Description

PATENT LETTERING

Class 22.

LUDWIG DANCKWERTH and RICHARD DAVID KÖHLER in ST. PETERSBURG.

Process for the use of rubber oil, which is obtained from old rubber goods

Patented in the German Empire on April 24, 1878.

The rubber oil necessary for this operation is made from old rubber goods or is made strong decomposed gum by dry distillation in a kettle over an open fire with the aid from superheated steam in the usual way. shown. One receives with participation the superheated steam from the rubber is a product which, later thickened and vulcanized, shows to the highest degree the properties of natural good rubber.

The weight of 10 ecm of these so obtained Crude oils at 17.5 ° C. is average 8.7 g, however, it is subject to some small fluctuations depending on this or that type of rubber in the different one distilled material was predominantly contained.

The lighter oils, which range from 60 ° to Passing 105 ° C. are separated from the heavier ones. The former are used to represent Varnishes, the latter for the operation described below.

The heavy oils are after their separation from the lighter ones with hemp, flax or mixed with any other suitable vegetable oil in various proportions; ever after one wishes to make an expensive or cheaper mixture, the addition of rubber oil increased or decreased; the mixture thus obtained is then converted into the firnif-like state in the usual way. The latter can be done either by cooking or chemical means. '

You can also turn the rubber oil into firnifs and use it on its own, or then mix them with those made from vegetable oils.

The processing of the mass for the purpose of vulcanization takes place on the one for rubber manufacture common rolling mills as follows:

All of the materials required for the rubber compound you want to represent intimately mixed under the rolling mill and these mixtures 7 to 20 pCt. Incorporated sulfur.

The amount of sulfur to be added is only applied to the rubber compound in the mixture or the vulcanizable substances in place of the latter are calculated without Consideration of the other things in the mixture for the purpose of coloring, strengthening, etc. existing other body.

Claims (2)

Patent Claims: 1. The use of rubber from old rubber goods or also strongly decomposed rubber heavy rubber oil thickened to form firnifs as a surrogate for or as Additive to rubber compounds. 2. The application of the old rubber goods or strongly decomposed rubber represented, Rubber oil thickened to form firnifs in mixtures with vegetable oils or from the latter obtained varnishes for the in No. ι designated purposes.