Factice

Factice (derived from French: Caoutchuoc factice ), also known as oil rubber is a rubber-like material, which by cross-linking of unsaturated mineral and vegetable oils, in Europe mainly from canola ( rapeseed ) oil and castor oil as well as in America, in addition of soybean oil, arises. The production is about the vulcanization of rubber. For crosslinking, sulfur, hydrogen sulfide, chlorine, sulfur and Isocyanatbrücken come into question Rizinusfaktis may also be sulfur-free crosslinked by peroxide.

Composition

Depending on the starting materials and manufacturing processes varies the composition of the different Faktisarten. The mineral oil content is between 0 and 30 percent, sulfur-containing Faktisarten contain up to about 5 % free sulfur. The material usually has a density similar to water ( 1.0 to 1.1 g/cm3).

Application and forms

Faktis serves as gumming and as an additive for rubber and similar materials, which are used as elastomers and fillers. He works primarily positive effect on the processing characteristics and is also dimensionally stabilizing and alterungsverzögernd. As an additive Faktis is also used in paints, varnishes, adhesives, lubricants and various plastics and linoleum. The Faktis even be buried according to the purpose plasticizers, stabilizers and a share of mineral oils.

Due to its characteristics and the production of different forms of Faktis be distinguished. The white Factice is bright and pressed ( compressible ), also more or less brittle. He is unregulated and contains sulfur components and chlorine additives. It is used for example as an eraser. Brown Factice, however, is due to the higher sulfur content of dark and may be viscous liquid to hard depending on the processing.

Development

The development of the factice was about the same time as the discovery of the vulcanization of the rubber in response to the high rubber prices. Here, the first faktisähnliche product in 1846 was prepared by treatment of rapeseed oil with nitric acid in 1853 of the first sulfur factice. In 1858 the Faktis his name as a derivative of the French term Caoutchuoc factice. As a result, the Faktisproduktion has been further improved and standardized, resulting in consistent quality as well as different variants of Faktis for different areas of einstellten.

The Hamburg-based company Oelfabrik German Society for Chemical products provides since 1902 Faktis ago for the rubber industry. Since an expansion of production capacity in 2004, the company is the world's largest Faktishersteller.