Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1980-12-23
1983-11-22
Derrington, James H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
152310, 152313, B60C 700
Patent
active
044168446
ABSTRACT:
A deflation-proof pneumatic 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.
REFERENCES:
patent: Re29890 (1979-01-01), Gomberg
patent: 3022810 (1962-02-01), Lambe
patent: 3112785 (1963-12-01), Altorfer
patent: 3381735 (1968-05-01), Talcott et al.
patent: 3396773 (1968-08-01), Alderfer
patent: 3605848 (1971-09-01), Lombardi et al.
patent: 4094353 (1978-06-01), Ford
patent: 4230168 (1980-10-01), Kaneda
Upjohn Polymer Chemicals, Technical Information Specification for PAPI 901, PC No. 05.
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