METHOD OF PRODUCING COMPLEX STABILIZING AGENTS OF POLYVINYL CHLORIDE Russian patent published in 1996 - IPC

FIELD: chemical technology. SUBSTANCE: product: mixture of partially identified composition. Yield is 98%. Reagent 1: synthetic black acids of fraction of C₁₇-C₂₅-stearic acid. Reagent 2: zinc oxide, calcium hydroxide, pentaerythritol, diphenylenepropane or xylitane, phosphite. Reaction conditions: zinc oxide and calcium hydroxide were heated with fatty acid at 40-45 C for 30-60 min and then with stearic acid at 45-55 C for 90-120 min at the following ratio of components, wt.-%: fatty acid 21.2-23.4; stearic acid 21.2-23.4; zinc oxide and calcium hydroxide 6.7-7.6; water 13.5-25.5; pentaerythritol 15.5-25.1; diphenylenepropane or xylitane 4.2-8.6, and phosphite 0.9-2.3. EFFECT: improved method of complex producing. 2 tbl