Abstract: The present invention relates to a process for producing a pelletized stabilizer mixture for halogen-containing plastics, comprising the following steps: (a) heating, at from 40 to 100° C. in an extruder or kneader, a mixture comprising (A) at least one lubricant, (B) at least one substance having stabilizer activity, and (C) auxiliaries and additives, ?where at least 1% by weight of all of the substances, based on the total amount of the mixture, has a melting point below 100° C., (b) forcing the material through a pelletizing die, (c) carrying out die-face pelletization under water, (d) transporting the pelletized stabilizer mixture away in a stream of water, (e) extracting the pelletized stabilizer mixture from the water, and (f) drying the pelletized stabilizer mixture. The present invention further relates to pelletized stabilizer mixtures producible therefrom, and also to use of these.

Abstract: The invention relates to a stabilizer system comprising a thermal stabilizer and a supported, at least partly calcined dolomite of the formula Mt1X1*CaX2 where Mt1=Mg or Zn; X1=O or (OH)2; X2=O; (OH)2 or CO3, wherein the calcined dolomite has been supported with a metal perchlorate of the formula Mt2(ClO4)m*nH2O where Mt2=Li, Na, K, Mg, Ca, Ba, Zn, Al, La, Ce; m=1, 2 or 3, m being selected so as to compensate for the charge of the metal ion Mt2; n=0 to 3 and wherein the stabilizer system does not comprise any of the compounds selected from the group consisting of (B) and (C) when Mt1 is Mg, and wherein (B) at least one nitrogen-containing organic compound is selected from the group consisting of (B1) and (B2), (B1) being a tert-alkanolamine and (B2) being an enaminone or a urea, and (C) an alkaline earth metal aluminohydroxocarbonate of the formula (C) (M1?xZnx)yAl2(OH)4+2y CO3* zH2O (C) where M=magnesium or/and calcium; x=0 to 0.5; y=2 to 8 and z=0 to 12.