DE378003C - Process for the production of mixtures of rubber and synthetic resins - Google Patents

Description

Process for the production of mixtures of rubber and synthetic resins. It has been difficult to homogeneous mixtures of rubber - to produce and synthetic resins. However, their manufacture appeared to be worth striving for, since they combine the valuable properties of the two substances. In order to achieve completely homogeneous mixtures, it would be necessary to use a solvent that is able to dissolve both substances. While almost all formaldehyde resins are only soluble in alcohol and acetone, rubber does not dissolve in these solvents. The usual rubber solvents, however, chloroform, benzene and its homologues as well as tetralin etc., are again unable to dissolve the synthetic resins or only with difficulty.

It has now been found that the production of completely homogeneous mixtures of rubber and synthetic resins succeed if these substances are mixed with chlorohydrins (chlorinated Alcohols) or phenols or better with a mixture of these two Subjects substances to vigorous mechanical processing. Numerous to this Purpose made experiments have shown that Diclilorhydrin and Cvklohexaiiol, but especially the mixtures of these two substances are excellent in this regard. suitable.

In D.ichlorhydrin e.g. B. are known to dissolve phenol-formaldehyde condensation products easy, paracaut school on the other hand only a little, but it swells up a lot in it. Quite similar is the preservation of these two substances in relation to (_'yklohexanol. The strongest solvent power comprises a mixture of these two solvents.

If one then treats such a mixture of dissolved phenolic resin and strongly swollen rubber in a vigorous mixing machine, so is obtained one completely homogeneous lacquers, which depending on the composition tough or hard coatings result.

Instead of a blender one can use for the purpose of achieving a intensive mechanical processing also a colloid mill, - System Plauson, with Apply advantage. Even if it was suggested earlier to use the colloid mill Dispersing resins, etc. in any non-solvent (see patent specification 33i955) so there was still no provision for the production of homogeneous mixtures of two bodies, such as rubber and synthetic resin, which behave very differently physically and are mutually strongly related to each other act. The production of completely homogeneous mixtures is only possible with this one Invention become possible.

The mixtures prepared in this way can be added from other cheap solvents still significantly cheaper and thereby at the same time Create fast or slow drying paints as required. Furthermore are such mixtures after the evaporation of the solvent = means to the most diverse Purposes. Both rubber that you get through Addition of hornialdeliyclliarz made harder like Formaldelivdliarz, which you can add to by adding rubber given a certain elasticity, products are of high technical value. Such Mixtures are ideally suited as plastic masses. As they are all valuable Have properties of the two components, especially the high insulation strength, also 1 # estiglceit, hardness, toughness, elasticity, malleability, polishability etc., they are an excellent material for insulating bodies. Of course you can also add cheap fillers up to 300 percent of the weight to your mixture, possibly also sulfur, add and then get a mass that for the production of cheap items: buttons, switch boxes, etc. very suitable. The mixture can also be hot after the solvent has evaporated Presence of sulfur, etc. - vulcanize in a known manner.

The following examples explain the procedure in more detail: Example i.

Dissolve 2o parts I'lieiiolforinaldehvil: c # tidensationsprodukt in 100 parts of dichlorohydrin and also leaves 5 parts of rubber in 50 parts of dichlorohydrin 2.I hours to swell. Then you process (read the whole thing for a few minutes in a colloid mill, Svstein Plauson, or in a similarly acting, high-speed beater mill. Man This gives a tough lacquer that is suitable for a wide variety of purposes.

Instead of the Diclilorli @ -drin you can also use cyclohexanol. If you add your spirit. Irish of rubber and dichlorohydr in still cyclohexanol, in this way the swelling process goes on faster and can be done to a milder extent when heated Pressure already achieve rubber solutions. which can be found without further finite the synthetic resin solution let mix. 13example2.

io parts rubber and go parts semi-solid phenol condensation products (Iukt are on a \ fish rolling machine (e.g. 13th after Werner d Pfleiderer) finite 3o parts 1) '- Diclilorlivdrin and 2o parts of cyclohexanol processed so long, Isis is a lioniogenic, viscous mass. i) it can be used in a vacuum at geliii (Ir_ # r 1 # .rivuarantee the funding through dismissal (Eliminates and then receives a hatred, they look at the opposite in the usual way Process all kinds of stands leaves. Add inan on the mixer Cheap fillers (up to 300 parts) and if necessary, one of your rubber a sufficient amount of sulfur, then no sufficient so that the liquid is largely absorbed @ is sucked, you get powdery su- punch, which after your complete ah- steam the solvent in well known \ Veise in heated 1 # orange zti objects read the press. With the simultaneous addition of Sulfur and subsequent vulcanization hard guinmi-like masses can be produced will be presented. Instead of the Plienolfurnialcleli_vdkonrlensations- product can also be made from synthetic resins 1 # ormrildehvd and other phenols orler atis i # ornialclelivd and use acetone. @ \ - ie the 1 - orinaldelivrlliarze can also use the fur- furol synthetic resins in this way with schuk be mixed. The proportions l: u can be used in both Directions are changed.

Claims (2)

PATENT REQUESTS: i. Process for the preparation of mixtures from Rubber and synthetic materials, characterized in that rubber and synthetic resin are used with Chlorbv (irinen or Cyclohetanol or better finite a mixture of these two Subjects substances to vigorous mechanical processing. 2. Procedure according to Claim i, characterized in that rubber and synthetic resin are used before mechanical Processing dissolves or swells in the mentioned 1 # liquids.