The metallic soaps of naphthenic acids — Part 2

Abstract

The milling properties of polybutadienes have been improved and scorch time decreased by the use of aluminium naphthenate, which can also be employed to ensure homogenous distribution of pigments in polyesters. Aluminium secbutoxide/naphthenic acid reaction products are useable in the preparation of cellular polyurethanes and mixtures of the material with polyethylene have been applied to textile fabrics. The naphthenate possesses rubber‐like properties to a certain extent and was in fact used as a rubber extender during the First World War. Mixtures of naphthenates and pentachlorophenol compounds have been utilised to preserve wood. Alum naphthenate has been used to produce poly (naphthenaluminophenyl siloxanes), polymers containing radicals f naphthenic acid chemically bound with aluminium atoms in the side chains. The product contains 9% silicon, 4.52% aluminium, approximate molecular weight 1600, and are easily soluble in benzene, toluol, carbon tert, and ether, giving stable film‐forming transparent solutions, whose films have an electrical volume resistency of 3.1 x 1015 ohms‐cm, a tongent of dielectric loss angle of 0.0082, an electric strength of 68.3 kv/mm and a dielectric constant of 2.9. Although the mechanical strength of these films is not high it can be increased by heating 10 hours at 120°C. When added to other silicon‐organic or organic polymers these products accelerate their drying gelatinization and hardening.

Citation

Lower, E.S. (1986), "The metallic soaps of naphthenic acids — Part 2", Pigment & Resin Technology, Vol. 15 No. 6, pp. 4-6. https://doi.org/10.1108/eb042236