Preparation method and application of zinc-aluminum-magnesium hydrotalcite-based PVC complex heat stabilizer

• Main Author: PENG ZHAOLIN
• Format: Patent
• Language: Chinese; English
• Published: 12.01.2011
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; PREPARATION OF CARBON BLACK; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to synthesis of novel zinc-aluminum-magnesium hydrotalcite and preparation of a PVC complex heat stabilizer from the hydrotalcite and calcium soap, zinc soap and the like according to a certain ratio. The complex heat stabilizer comprises the main components shown in the description, wherein X is more than or equal to 0.25 and less than or equal to 0.5, n is more than or equal to 0 and less than or equal to 0.1, and m is more than or equal to 0 and less than or equal to 4; while the popular hydrotalcite in market at present has the general molecular formula shown in the description. The complex heat stabilizer prepared from the hydrotalcite has the advantages of higher initial hue and long-lasting heat stability for PVC and other chlorine-containing high polymers, and has the characteristics of no toxin, no pollution, low cost, rich raw materials and the like.