초록 ▼

Increased bulk density of powdered flame retardants, flame retardant synergists and other powdered polymer additives substantially improves the processing, dispersibility, and properties of the processed polymer. Processing improvements include faster processing, more homogeneous additive dispersion

Increased bulk density of powdered flame retardants, flame retardant synergists and other powdered polymer additives substantially improves the processing, dispersibility, and properties of the processed polymer. Processing improvements include faster processing, more homogeneous additive dispersion throughout the polymer, less swell, and reduction or elimination of drool. Formed parts containing the increased bulk density flame retardant and flame retardant synergists are more consistent with respect to density, wall thickness, and more homogeneous and consistent flame retardancy. Physical properties such as flammability test performance and/or impact strength are also enhanced.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of processing a solid, particulate polymer additive, having a particle size distribution such that at least 50% of the particles have an average particle size less than 10 .mu.m, into a polymer comprising:de-aerating the particulate polymer additive to an exten

[ What is claimed is:] [1.]1. A method of processing a solid, particulate polymer additive, having a particle size distribution such that at least 50% of the particles have an average particle size less than 10 .mu.m, into a polymer comprising:de-aerating the particulate polymer additive to an extent such that the bulk density of the polymer additive is increased at least 50%; andmixing the de-aerated polymer additive into a polymer such that the polymer additive is uniformly distributed throughout the polymer.