Room temperature curable tire patch
AssigneeThe Firestone Tire & Rubber Company
InventorsRussell W. Koch, William W. Barbin
Life of this patent
Estimating the term…
Abstract
The repair of a reinforced elastomer article having a hollow therein relates to utilizing an amine curable polymer or prepolymer and a cured elastomer patch. The hollow in the elastomer, which can extend either partially or completely through the article, is filled with a gum rubber which is thereafter cured by conventional means, such as with spotters. The area beneath the now filled hollow is coated with a treating agent, followed by the amine curable polymer or prepolymer and a cured patch. The polymer is then cured at room temperature. One area of use is in the repair of tires.
Claims19
A repaired elastomer article, comprising:
- the elastomer article, said article having a hollow therein;
- a cured gum rubber disposed within the said hollow and filling it thereby;
- a treating agent applied to the inner surface of said article immediately surrounding said filled hollow, said treating agent selected from the group consisting of:
- N-halohydantoins, N-haloamides, N-haloimides, and combinations thereof;
- an amine curable polymer or prepolymer applied over the treated surface of said article;
- and
- an elastomeric patch positioned over said polymer or prepolymer;
- wherein said polymer of prepolymer is cured in situ at room temperature wherein said patch has a coating of the treating agent on its inner surface;
- and
- wherein said elastomer article is cured and unsaturated.
A process for repairing an elastomer article having a hollow therein, comprising:
- filling the hollow with a gum rubber;
- curing said gum rubber;
- applying a treating agent to the inner surface of the article immediately surrounding the filled hollow;
- applying a quantity of amine curable polymer or prepolymer over the treated surface of said article;
- applying a treating agent to the surface of an elastomeric patch and positioning said patch over said polymer or prepolymer;
- and
- curing said polymer or prepolymer at room temperature;
- wherein said treating agent is selected from the group consisting of:
- N-halohydantoins, N-haloamines, N-haloimides, and combinations thereof.
Dependencies are inferred from the claim text.