STABILIZER FOR HALOGEN-CONTAINING RESINS AND PROCESS FOR THE PREPARATION THEREOF, HALOGEN-CONTAINING RESIN COMPOSITION, AND COMPOSITE HYDROXIDE SALT

摘要

There is incorporated as a stabilizer into a halogen-containing resin a complex hydroxide salt represented by the formula ÄAl2(Li(1-x).Mx)(OH6Ün(A-n)1+x.mH2O wherein A is an inorganic or organic anion, M is Mg and/or Zn, n is a valence number of anion A, m is 0 or positive number, and x satisfies the expression of 0.01/=x1. This complex hydroxide salt causes almost no occurrence of initial coloration when incorporated in halogen-containing resins because a part of lithium ion to enter a vacant site of aluminum hydroxide octahedron layer of the gibbsite structure in the lithium aluminum complex hydroxide salt is substituted for the metal ions of Mg and/or Zn. By substitution of a part of lithium ion for the divalent metal ions, the amount of charge-supplying anion is increased and the thermally stabilizing ability is superior to that of the lithium aluminum complex hydroxide salts. IMAGE