Resilient tires and wheels – Tires – resilient – Cushion
Patent
1985-08-29
1987-08-04
Czaja, Donald E.
Resilient tires and wheels
Tires, resilient
Cushion
152310, B60C 700
Patent
active
046839291
ABSTRACT:
A deflation-proof penumatic tire comprises a casing and a substantially void-free, preferably oil-containing elastomeric filling material. The tire casing is injected with a combination comprising a polyol, an organic polyisocyanate and water, in amounts and under conditions sufficient to produce carbon dioxide and form a polyurea-containing polyurethane elastomer in which the carbon dioxide is dissolved in the elastomer, thereby providing a substantially void-free filling material. The formulation permits the addition of a substantial amount of extender oil while retaining an acceptable level of hardness.
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Upjohn Polymer Chemicals, Technical Information Specification for Papi 901, P.C. No. 05 (Rev. 10/74).
Czaja Donald E.
Hoch Ramon R.
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