DE536119C - Process for the production of wire glass-like material - Google Patents

Description

Process for the production of .drahtglasartigem material It is known Wire meshes or fabrics made from fibers of any kind with covers from cellulose derivatives to be provided in the form of transparent skins. Many of these cellulose derivatives However, they are not sufficiently water-resistant, and many show insufficient elasticity and only low flexural strength; It is also usually difficult to repair damage caused in a simple way to mend. It has also been used to make waterproof Fabrics and fabrics suggested these fabrics with hydrocarbons in unpolymerized Soak shape.

It has now been found that a highly elastic, extremely weather-resistant, Easily repairable wireframe-like material is obtained if the Braids or fabrics made of wire or fibers or materials of any kind Polymerization, condensation and conversion products, etc., of butadiene hydrocarbons or their derivatives used in the form of pellicles, which after application of a Hardening process are subjected.

Those with the help of alkali metals are particularly suitable for this In the presence of solvents, the polymerization products of butadiene colylened hydrogen are obtained.

Condensation products, e.g. B. the condensation of aromatic Hydrocarbons shown with butadiene hydrocarbons are for this Purpose, namely in a mixture with the aforementioned products, usable.

The hardening process is most easily carried out by the action of oxygen-containing Gases at ordinary or elevated temperature. Oxygen carriers can also be used here be added, _z. B. siccatives, linoleum manganese or cobalt, naphthenic acid Salts, etc. Required depending on the thickness of the membrane and the nature of the starting material the hardening process varies in length of time, temperature or oxygen concentration of different levels. For example, the hardening process can be carried out in the case of pellicles with a thickness of 0.2 mm without an oxygen carrier at zoo ° in about zo to 14 hours, he can, however, with the presence of Oxygen carriers at normal or moderately elevated temperature in considerably take less time. If the hardening is carried out with sulphurizing agents, so one appropriately takes such metals or metal alloys for the wire nets, which are attacked as little as possible by sulfur. You can also do the hardening cause simple heating in the absence of oxygen. Example A tinned one Iron wire mesh with a mesh size of zo mm is converted into a 5% solution of a of sodium to a mixture equal parts of butadiene and cyclohexane obtained Butadienpolymerisa, tion product immersed in cyclohexane. The jelative Solution viscosity - is about -95o at 2.5 '. , One makes sure that the solution during the pro. process is free of air bubbles. The wire network becomes the solution pulled out, dried in the air and then the cover either in the air or hardened in oxygen at zoo °. The curing time is in the absence of oxygen carriers about zo to = q. Hours. In the presence of oxygen carriers the hardening can be carried out in a not too long time even at ordinary temperature will.

Crystal clear, permanent skins are obtained; -so that the material obtained can be used as a substitute for wired glass. The thickness of the under the above conditions produced skin is about o, o8 to o, z mm. You can also use thicker skins' produce by either repeating the processes mentioned several times or by Thicker coatings are produced beforehand in such a way that concentrated solutions are used goes out.

Repairing damage is very easy. You either stick with the help of a solution of polymerization products. from butadiene hydrocarbons or natural rubber finished film pieces over the damaged areas or painted over die: damaged areas with a more or less concentrated solution of the called polymerization, condensation or conversion products, etc., which have an additive of oxygen carriers. The y-cured film is then formed at normal or moderately elevated temperature in a short time .. The mesh size the braids used as a base can be changed within wide limits. Man can e.g. B: also use very wide-meshed wire nets.

Claims (1)

PATENT CLAIM Process for the production of wire glass-like material, in the case of braids or fabrics with a transparent coating of organic hardenable Mass are provided, characterized in that the coating consists of-- polymerization, Condensation and conversion products etc. of butadiene hydrocarbons or the derivatives of which exist in the form of membranes that undergo a hardening process after application be subjected.