Method of producing large-scale and/or nano-scale, coated, disagglomerated and preferably functionalised magnesium hydroxide particles containing aneallable masses and hardened thermoplastic or duroplastic polymers or composites contained disagglomerated and homogenously distributed magnesium hydroxide filling particles.

摘要

Preparation of hardenable mass containing coarse and/or nanoscalic, coated, deagglomerated magnesium hydroxide particle, comprises (a) providing the magnesium hydroxide particle in dried form; (b) dispersing or suspending the particle in an organic solvent; (c1) either bead milling the suspension or dispersion in the presence of a dispersing agent or (c2) treating the suspension or dispersion with ultrasound in the presence of the dispersing agent; and (d1) mixing the obtained dispersion containing the particle with a component of a hardenable mass. Preparation of hardenable mass containing coarse and/or nanoscalic, coated, deagglomerated magnesium hydroxide particle, comprises (a) providing the magnesium hydroxide particle in dried form; (b) dispersing or suspending the particle in an organic solvent; (c1) either bead milling the suspension or dispersion in the presence of a dispersing agent or (c2) treating the suspension or dispersion with ultrasound in the presence of the dispersing agent; and (d1) either mixing the obtained dispersion containing the particle with a component of a hardenable mass or (d2) mixing the dispersion containing the particle with a components of the hardenable mass. Independent claims are included for: (1) the preparation of filled polymer dispersion containing the particle comprising (aa) providing the particle as a suspension or dispersion in an aqueous solvent containing a dispersing agent or in dried form, (bb) optionally dispersing and/or suspending the dried magnesium hydroxide powder in an aqueous solvent, carrying out the steps (c1) or (c2), (dd1) mixing the dispersion obtained from (c1) with an aqueous polymer dispersion or (dd2) mixing the dispersion obtained from (c2) with the aqueous polymer dispersion, and (e1) forming the polymers from the obtained polymer dispersion; (2) the hardenable mass, preferably filled duroplast or thermoplast obtained by the above process; (3) an aqueous filled polymer dispersion containing the magnesium hydroxide particle obtained by the above process; and (4) a composite material containing the hardenable mass and further a reinforcing agent.