Synthesis process of rubber antioxidant BLE

• Main Authors: XUE YUCONG, LIU ZHIYONG, MIAO JINZHI, ZHANG JICHU, MAO GUOXIAN, WANG KUILIANG
• Format: Patent
• Language: Chinese; English
• Published: 04.02.2009
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention belongs to the technical field of rubber antioxidant production, in particular relating to a production technology of rubber antioxidant BLE. Benzene monosulfonic acid and p-diphenylamine with a mass ratio of 1:25 to 50 are put in a reaction vessel, and are fully mixed at 65 to 85 DEG C until the materials are fully molten; at 220 to 280 DEG C, acetone, the mass ratio of which and the p-diphenylamine is1 to 2: 1, is put in, and is stirred for heat preservation for 1 to 2 hours, and then the rubber antioxidant BLE is produced. The rubber antioxidant BLE produced in the production process of the invention is characterized by high effective content, low cost, good mobility, the reaction does not produce waste water, and the product can replace the harmful Antioxidant A and Antioxidant D and meets the requirements of radial tire production.