SEALANT COMPOSITION FOR REPAIRING A PUNCTURED TIRE

• US 20100130640A1
• Filed: 11/23/2009
• Published: 05/27/2010
• Est. Priority Date: 11/25/2008
• Status: Abandoned Application

• Current Assignee: Yokohama Rubber Company Limited
• Original Assignee: Yokohama Rubber Company Limited
• Inventors: OKAMATSU, Takahiro, KIMURA, Kazushi
• Application Number:
  US12/624,077
• Publication Number:
  US 20100130640A1
• Time in Patent Office: Days
• US Class Current: 523/166
• CPC Class Codes: B29C 73/163 Sealing compositions or agents, e.g. combined with propellant agents
• CPC Class Codes: B29L 2030/00 Pneumatic or solid tyres or parts thereof conveyor belts B29L2031/7092; drive belts B29L2031/7094; fourdrinier belts B29L2031/733

Abstract

The present invention relates to a sealant composition for repairing a punctured tire, which comprises a synthetic resin emulsion, a tackifier and a water glass, and which has a hydrogen ion exponent of 5.5 to 8.5. The sealant composition for repairing a punctured tire has an improved sealing performance and is excellent in storage stability.

Claims

1. A sealant composition for repairing a punctured tire, which comprises a synthetic resin emulsion, a tackifier and a water glass, and which has a hydrogen ion exponent of 5.5 to 8.5.

2. The sealant composition for repairing a punctured tire according to claim 1, wherein the water glass comprises at least one sodium silicate selected from the group consisting of Na₂SiO₃, Na₄SiO₄, Na₂Si₂O₅, and Na₂Si₄O₉.

3. The sealant composition for repairing a punctured tire according to claim 1, wherein the synthetic resin emulsion is an ethylene-vinyl acetate emulsion.

4. The sealant composition for repairing a punctured tire according to claim 1, wherein the tackifier comprises at least one resin selected from the group consisting of rosin resins, terpene resins, and hydrogenated terpene resins.

5. The sealant composition for repairing a punctured tire according to claim 1, wherein the solid content of the water glass is 3 to 70 parts by mass relative to 100 parts by mass of the solid content of the synthetic resin emulsion.

6. The sealant composition for repairing a punctured tire according to claim 1, wherein the solid content of the tackifier is 50 to 200 parts by mass relative to 100 parts by mass of the solid content of the synthetic resin emulsion.

7. The sealant composition for repairing a punctured tire according to claim 1, which further comprises an antifreeze.

8. The sealant composition for repairing a punctured tire according to claim 7, wherein the antifreeze comprises at least one member selected from the group consisting of ethylene glycol, propylene glycol, and diethylene glycol.

9. The sealant composition for repairing a punctured tire according to claim 7, wherein the solid content of the antifreeze is 100 to 400 parts by mass relative to 100 parts by mass of the solid content of the synthetic resin emulsion.

10. The sealant composition for repairing a punctured tire according to claim 1, wherein the hydrogen ion exponent is 6.0 to 8.0.