METHOD FOR PRODUCING RUBBER WET MASTER BATCH

• Main Author: KONNO YUYA
• Format: Patent
• Language: English; Japanese
• Published: 12.07.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a method for producing a rubber wet master batch where rubber powder is uniformly dispersed which is used as a raw material of a vulcanized rubber excellent in tear strength.SOLUTION: A method for producing a rubber wet master batch containing at least rubber powder, a filler, a dispersion solvent and a rubber latex solution as raw materials includes: a step (I) of adding at least a part of the rubber latex solution to the dispersion solvent when dispersing the rubber powder into the dispersion solvent to produce a rubber powder solution containing the rubber powder to which the rubber latex particles are attached; a step (II) of adding the filler to the rubber powder solution, and mixing the substances to produce a rubber powder-containing slurry solution; and a step (III) of mixing the rubber powder-containing slurry solution and the residual rubber latex solution, and then solidifying and drying the mixed substance.SELECTED DRAWING: None 【課題】ゴム粉が均一に分散したゴムウエットマスターバッチであって、引裂き強度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の製造方法を提供すること。【解決手段】少なくともゴム粉、充填材、分散溶媒、およびゴムラテックス溶液を原料とするゴムウエットマスターバッチの製造方法であって、ゴム粉を前記分散溶媒中に分散させる際に、ゴムラテックス溶液の少なくとも一部を添加することにより、ゴムラテックス粒子が付着したゴム粉を含有するゴム粉溶液を製造する工程（Ｉ）と、ゴム粉溶液に充填材を添加し、混合してゴム粉含有スラリー溶液を製造する工程（ＩＩ）と、ゴム粉含有スラリー溶液と、残りのゴムラテックス溶液とを混合した後、凝固・乾燥する工程（ＩＩＩ）とを含むゴムウエットマスターバッチの製造方法。【選択図】 なし