PNEUMATIC TIRE WITH BUILT-IN COLORED SEALANT LAYER

• Main Authors: CRAWFORD MICHAEL J, BALOGH GEORGE F, BOTTS BINA P, REITER LEONARD JAMES, FITZHARRIS WALL JENNIFER E
• Format: Patent
• Language: English
• Published: 16.06.2005
• Edition: 7
• Subjects: ADHESIVES; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a pneumatic tire with a built-in colored sealant layer of a butyl rubber base with a color other than black to facilitate recognizing puncture damages of a tire. SOLUTION: The sealant layer is derived from a sealant precursor layer comprising a butyl rubber, organoperoxide and silica together with a colorant. The butyl rubber-based precursor sealant layer is built into the tire to form a tire assembly and its butyl rubber component is depolymerized during a subsequent curing of the tire at an elevated temperature in a suitable mold to form the tire having the resultant built-in colored sealant layer. The sealant precursor composition may additionally contain clay and/or calcium carbonate. COPYRIGHT: (C)2005,JPO&NCIPI