METHOD FOR PRODUCING RUBBER WET MASTER BATCH

• Main Author: KOMIYA YUKI
• Format: Patent
• Language: English; Japanese
• Published: 24.06.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

To provide a method for producing a rubber wet master batch (WMB) as a raw material of a vulcanized rubber excellent in flexural fatigue resistance.SOLUTION: The method for producing a WMB comprises: a step (i) of mixing a filler, a dispersion solvent, and a rubber latex solution to produce a filler-containing rubber latex solution; a step (ii) of coagulating the filler-containing rubber latex solution to produce a filler-containing rubber coagulum; and a step (iii) of dehydrating/drying the filler-containing rubber coagulum to produce a rubber wet master batch. In the step (i), molybdenum sulfide is added, and then a compound represented by formula (I) is added.SELECTED DRAWING: None 【課題】耐屈曲疲労性に優れた加硫ゴムの原料となるゴムウエットマスターバッチ（ＷＭＢ）の製造方法の提供。【解決手段】充填材、分散溶媒及びゴムラテックス溶液を混合して、充填材含有ゴムラテックス溶液を製造する工程（ｉ）、充填材含有ゴムラテックス溶液を凝固して、充填材含有ゴム凝固物を製造する工程（ｉｉ）及び充填材含有ゴム凝固物を脱水・乾燥してゴムウエットマスターバッチを製造する工程（ｉｉｉ）を有し、工程（ｉ）中に硫化モリブデンを添加し、次いで式（Ｉ）で表される化合物を添加するＷＭＢの製造方法。【選択図】なし