METHOD FOR PRODUCING MASTER BATCH, MASTER BATCH OBTAINED BY SAID PRODUCTION METHOD, RUBBER COMPOSITION FOR TIRE, AND PNEUMATIC TIRE

摘要

Provided, inter alia, is a method for producing a master batch in which dispersibility of microfibrillated plant fibers is improved, processability is exceptional, fuel consumption is low, and rubber properties such as tensile strength and elongation at break are improved. The invention pertains to a method for producing a master batch including a step (I) for mixing a rubber latex and microfibrillated plant fibers that have been oxidized using an N-oxyl compound and coagulating the resulting mixture by adjusting the pH thereof to 2-6.