Bayer Aktiengesellschaft

Gustav Sinn

Martin Matner

Hermann Perrey

Hermann J Bross

A base material for artificial leather having a water vapor absorption capacity of from 2 to 8% by weight, based on a fibre fleece impregnated with a rubber latex mixture containing a heat sensitizer, a quick-acting vulcanization accelerator and, as expanding agent, a silicone oil emulsion or an inert, emulsifiable substance which is insoluble both in the rubber and the other constituents of the latex. After the impregnation of the fibre fleece, the latex mixture is coagulated by heat, vulcanized and then dried.

Base material for artificial leather

Method for coagulating polymer dispersions with heat sensitizing agents which contain specific urethane groups. These new heat sensitizing agents provide at room temperature stable latices which coagulate completely when heated.

Coagulating a polymer dispersion in the presence of a heat sensitizing

Heat sensitizing mixture comprising an amide and a heat sensitizing

Process for pre-strengthening a non-woven textile fibre fleece obtained by the wet process wherein a heat-sensitive latex mixture whose coagulation point does not substantially change on dilution is applied in a finely divided form to the surface of the wet fleece and the fleece is then heated to a temperature at which the latex mixture coagulates to form a gel-like film.

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Leverkusen, Germany

Gustav Sinn