PROCESS FOR PRODUCTION OF MODIFIED DIENE RUBBER

• Main Authors: ASHIURA MAKOTO, KAWAMO TETSUJI
• Format: Patent
• Language: English
• Published: 11.12.2008
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS; TYRE CHANGING OR REPAIRING; TYRE INFLATION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a process for production of modified diene rubbers giving a rubber composition with improved dispersibility of silica, abrasion resistance and anti-heat generation properties by modification of diene rubber series. SOLUTION: The process for production of modified diene rubber series is carried out by addition of (B) a compound having a stable nitroxide free radical, (C) a radical initiator, and (D) a radical polymeric monomer to (A) a natural rubber, polyisoprene rubber, styrene butadiene co-polymerized rubber, a hydrogenated acrylonitrile-butadiene copolymer rubber and/or a chloroprene rubber under ordinary temperatures and by reaction in the presence of oxygen in a solvent free system. COPYRIGHT: (C)2009,JPO&INPIT