Hoechst Aktiengesellschaft

Walter Brotz

Gunther Illmann

Manfred Engelmann

Klaus Rieger

Alfred Riedel

Friedrich Zinnert

Karl Heinz Stetter

A mixture of wax acids is prepared by oxidizing by means of chromosulfuric acid a mixture of a bark wax with a further natural or synthetic wax, preferably a hydrocarbon wax. The mixture of wax acids is especially suitable as wax component in polishes.

Mixed oxidation product on the basis of bark waxes and other waxes

A coating composition essentially consisting of a polypropylene having a crystalline fraction of from 20 to 60 % by weight and a melt viscosity of from 5,000 to 200,00 cP at 170.degree. C is applicable by a roll coater. The coatings have a high elasticity, toughness and good adherence on the support and are sealable.

Coating composition

The invention is concerned with novel modified candelilla waxes which are obtained by treating natural candelilla wax with magnesium, calcium, barium, zinc or aluminium hydroxide to such an extent that the product has substantially no acid number and a saponification number of from 5 to 20 units below that of the starting wax. The modified waxes of the invention do not, in contrast to natural wax, render tranparent PVC materials turbid during their processing, while the good properties of the natural lubricant remain unchanged.

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Gersthofen, Germany

Walter Brotz