Patent ID: 6313208
Filing Date: 2001-11-06
Classification: C08K

Abstract:
A synthetic resin composition having heat deterioration resistance comprising:(A) 100 parts by weight of a synthetic resin; and(B) 0.001 to 10 parts by weight of hydrotalcite particles defined by the following (i) to (iv):(i) the hydrotalcite particles are represented by the following chemical structure formula (1):{(Mg).sub.y (Zn).sub.z }.sub.1-x (Al).sub.x (OH).sub.2 (A.sup.n-).sub.x/n.mH.sub.2 O (1)wherein A.sup.n- is at least one anion having a valence of n, n is the valence of A and x, y, z and m are values which satisfy the following expressions:0.1.ltoreq.x.ltoreq.0.5, y+z=1, 0.5.ltoreq.y.ltoreq.1 0.ltoreq.z.ltoreq.0.5, 0.ltoreq.m<1;(ii) the hydrotalcite particles have an average secondary particle diameter measured by a laser diffraction scattering method of 2 .mu.m or less;(iii) the hydrotalcite particles have a specific surface area measured by a BET method of 1 to 30 m.sup.2 /g; and(iv) the hydrotalcite particles contain an iron compound and a manganese compound in a total amount of 0.02 wt % or less in terms of metals (Fe+Mn).