Method of processing food paraffins and uses of obtained product

Details Method of processing food paraffins and uses of obtained product Method of processing food paraffins and uses of obtained product

1975-04-22

1977-08-16

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Wax containing

208 25, C08L 9108

Patent

active

040424111

ABSTRACT:
Food paraffins are processed into a mixture of paraffins of normal structure, iso-structure, and naphthenes with side chains of normal and iso-structure, containing from 20 to 32 carbon atoms, and high-melting paraffins of normal structure, by processing the food paraffin at a temperature of 42.degree.-45.degree. C with carbamide taken in the weight ratio of 1:1, in the presence of a solvent consisting of 60 per cent by volume of benzine and 40 per cent by volume of acetone taken in the paraffin:solvent ratio of 1:3-3.5. The resultant reaction mixture consists of a crystalline mass containing high-melting paraffins of normal structure in the form of their complex with carbamide and a solution of a mixture of paraffins of normal structure, iso-structure, and naphthenes with side chains of normal and iso-structure having from 20 to 32 carbon atoms, in said solvent. The crystalline mass and the solution are separated. The solution of the mixture is washed with water at a temperature of 80.degree.-90.degree. C and then water and the solvent are removed by distillation to isolate said mixture. The crystalline mass is treated with water at a temperature of 80.degree.-90.degree. C to prepare an aqueous solution of carbamide and a solution of high-melting paraffins of normal structure in said solvent. These solutions are separated and the solvent is distilled from the solution of high-melting paraffins of normal structure.
The mixture of paraffins of normal structure, iso-structure, and naphthenes with side chains of normal and iso-structure, containing from 20 to 32 carbon atoms, obtained by this method, is used as an additive to protective coatings for tin containers intended for canning.

REFERENCES:
patent: 2967817 (1961-06-01), Marple
patent: 3847791 (1974-11-01), Kunert

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