| 摘要 |
PROBLEM TO BE SOLVED: To provide hydrotalcite particles which do not deteriorate electrical insulation properties in heat-resistant and water-resistant applications while maintaining an acid accepting effect when used in a halogen-containing resin/rubber. SOLUTION: An acid acceptor is composed of hydrotalcite particles defined by having (i) a specific chemical structure, (ii) an average particle diameter, measured by the laser diffraction scattering method, of 0.2-2μm, and (iii) a specific surface area, measured by the BET method, of 1-50 m<SP>2</SP>/g, containing (iv) a sodium compound in terms of an Na metal of 0.06 wt.% or less, and having (v) at least one kind selected from the group consisting of a silicon compound, a phosphoric acid compound, and a boron compound in terms of an Si, P or B atom of 0.05-3 wt.% present on the surface thereof. The halogen-containing resin/rubber composition comprises the acid acceptor. COPYRIGHT: (C)2008,JPO&INPIT
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