Abstract: A process is described for preparing compositions comprising ethylene copolymers, such as ethylene-acrylate or ethylene-vinyl acetate copolymers, and compatible liquid hydrocarbons which act as inexpensive plasticizers or extenders, the process enabling large quantities of inert, e.g. inorganic fillers to be incorporated more simply than previously proposed processes. The hydrocarbon is compatible if it satisfies the test that there is no observable exudation of hydrocarbon from the copolymer when 50 g. of powdered copolymer are mixed with a quantity of hydrocarbon in a metal dish which is first heated to 120.degree. C. to fuse the copolymer, second cooled and held at a temperature of -20.degree. C. for 18 hours, and third warmed to room temperature.

Abstract: An aqueous water-dilutable composition for use as a cathodic coating material is prepared by partially epoxidizing a liquid polydiene, all or a major proportion of which is derived from a 1,4-conjugated diene, such as butediene, aminating the epoxidized polydiene at a temperature of at least 120.degree. C. and, optionally in the presence of an organic hydroxy-group-containing catalyst, with at least polyamine reactant which contains not more than one primary amino group and/or at least one secondary amine group with the or any remaining amine group(s) being selected from secondary and tertiary amine groups and thereafter partially neutralizing the aminated polymeric material with acid to yield a water-dilutable material containing residual unsaturation.