SILICIC ACID-COVERED HYDROTALCITE COMPOUND PARTICLE POWDER, AND CHLORINE-CONTAINING RESIN STABILIZER AND CHLORINE-CONTAINING RESIN COMPOSITION USING THE PARTICLE POWDER

摘要

PROBLEM TO BE SOLVED: To provide a hydrotalcite compound particle whose resistance to the attack against its surface by chlorine ions released from a resin is improved.;SOLUTION: Regarding the hydrotalcite compound, the surface of an Mg-Al-based or Mg-Zn-Al-based hydrotalcite compound particle is covered with silicic acid by 0.25 to 25wt.% expressed in terms of SiO₂ to the hydrotalcite compound, and also, the particle is dried at 105 to 150°C. The hydrotalcite compound particle obtained by heat-treating the particle at 150 to 350°C is used as a stabilizer for a chlorine resin-containing composition.;COPYRIGHT: (C)2008,JPO&INPIT