Abstract: A semi-crystalline polyolefin composition comprising: a thermoplastic crystallizable polyolefin; and one or more di-alkyl bis-oxalamide compounds having the formula: wherein R1 is a spacer group and each R2 is a peripheral group and wherein each of R1 and R2a and R2b is an independently selected hydrocarbyl group is provided. Also provided are a method for producing the semi-crystalline polyolefin composition and articles made therefrom.

Abstract: The invention relates to the preparation of a divided solid composition comprising a talc powder at least a fraction of which consists of grains of talc bonded together in the form of aggregates whose average size is greater than that of said grains of talc. As well as being highly compatible with a large number of thermoplastic resins and having a high talc content, at least of the order of 75%, a divided solid composition obtained according to the invention can be dispersed into fine talc particles in thermoplastic materials during the shaping of these thermoplastic materials (processes with low shear, such as injection moulding, extrusion of sheets/films, etc.) using conventional techniques and equipment. The invention accordingly permits the production of thermoplastic articles loaded with talc without having to use expensive composites (or compounds).