Basic calcium aluminum hydroxy phosphites, a process for their production and their use

摘要

PCT No. PCT/DE92/00144 Sec. 371 Date Aug. 6, 1993 Sec. 102(e) Date Aug. 6, 1993 PCT Filed Feb. 21, 1992 PCT Pub. No. WO92/15523 PCT Pub. Date Sep. 17, 1992.The invention describes basic calcium aluminum hydroxy phosphites of the general formula CaxAl2(OH)2(x+3-y)(HPO3)y.mH2O wherein x=2-12, <IMAGE> and m=0-12, with the proviso that y NOTEQUAL 1, if x=2-8. The compounds according to the invention are particularly suited as stabilizers for halogen-containing polymers, in particular PVC.