Manufacturing procedure for large-scale and/or nano-scale, coated, disagglomerated magnesium hydroxide particles containing thermoplastic polymers and device for this purpose

摘要

Preparing filled thermoplastic material, comprises: (a) providing a thermoplastic material; (b) providing a rough- and/or nanoscale, coated, magnesium hydroxide particles as suspension or dispersion in an aqueous or organic solvents; (c) feeding the coarse and/or nanoscale, coated magnesium hydroxide particles in suspension or dispersion of the thermoplastic material; (d) mixing the magnesium hydroxide particles with the heated, molten thermoplastic material; and (e) removing the solvent of the suspension or dispersion from the mixture. Preparing filled thermoplastic material containing coarse- and/or nanoscale, coated and deagglomerated magnesium hydroxide particles in the form of coated primary particles, comprises: (a) providing a thermoplastic material; (b) providing a rough- and/or nanoscale, coated, magnesium hydroxide particles as suspension or dispersion in an aqueous or organic solvents; (c) feeding the coarse and/or nanoscale, coated magnesium hydroxide particles in suspension or dispersion to thermoplastic material; (d) mixing the magnesium hydroxide particles with the heated, molten thermoplastic material; and (e) optionally removing the solvent of the suspension or dispersion from the mixture. Independent claims are included for: (1) an apparatus for producing filled thermoplastic comprising coarse and/or nanoscale, coated magnesium hydroxide particles in the form of coated primary particles, where the magnesium hydroxide particles are added to the thermoplastic material in the form of a suspension or dispersion, comprises a first injection device (2) for thermoplastic polymer, a second injection device (3) for a dispersion/suspension containing coarse and/or nanoscale, coated, deagglomerated magnesium hydroxide particles, a first zone in which the thermoplastic is fed by the injection device, a second zone, in which the dispersion/suspension of the magnesium hydroxide particles is fed by injection device, optionally a first- and second degassing zone (7), a heated region for melting the thermoplastic and a device for mixing molten thermoplastics and magnesium hydroxide particles; and (2) the filled thermoplastic material containing coarse- and/or nanoscale, coated and deagglomerated magnesium hydroxide particles obtained by the process.