公开(公告)号：JPH0518339B2

公开(公告)日：1993-03-11

申请号：JP14983185

申请日：1985-07-08

Applicant: BRIDGESTONE CORP

Inventor： TAKESHITA MICHITAKA ,  KIURA MITSUO ,  ITO SEISHIRO ,  IHARA TATSUHIKO

IPC: C08L7/00 ,  B60C1/00 ,  C08K3/04 ,  C08K9/00 ,  C08L21/00 ,  C08L23/00 ,  C08L33/00 ,  C08L33/02 ,  C08L101/00 ,  C09C1/56 ,  C09C3/04

公开(公告)号：JPS61255946A

公开(公告)日：1986-11-13

申请号：JP9659085

申请日：1985-05-09

Applicant: BRIDGESTONE CORP

Inventor： TAKESHITA MICHITAKA ,  KIURA MITSUO ,  ITO SEISHIRO ,  IHARA TATSUHIKO

IPC: C08K3/04 ,  C08L7/00 ,  C08L21/00 ,  C08L21/02

Abstract: PURPOSE:To provide the rubber compsn. having improved tensile strength and wear resistance and suitable for use as a material for tires, by using, as a main component, a wet master batch obtd. by dispersing modified carbon black in a diene rubber latex. CONSTITUTION:The surface of a reinforcing carbon black having a nitrogen adsorption surface area of 70-200m /g and a DBP absorption of 80-130ml/100g is treated with low-temperature plasma to prepare a modified carbon black having a hydrophilicity level of 2-4. 30-150pts.wt. said modified carbon black as a water slurry is dispersed in 100pts.wt. (on a solid basis) rubber latex com prising natural rubber or a diene rubber component such as styrene/butadiene copolymer rubber to prepare a wet master batch. Said master batch is used as a main component to obtain the desired rubber compsn.