Solid polyurethane tire/wheel assembly
US4095637A · kind A · utility
52Cited by
13References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1976 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | Nov 19, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10846
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A substantially solid industrial polyurethane tire/wheel assembly where said polyurethane is prepared by reacting (A) a curative of 1,3-propane diol with a prepolymer of diphenylmethane-4,4'-diisocyanate and a polymeric polyol or (B) a curative complex of 4,4'-methylene dianiline with a prepolymer of a diisocyanate selected from diphenylmethane-4,4'-diisocyanate and toluene diisocyanate with a polymeric polyether polyol. It is an important feature of this invention that the selection of reactants involved, for the dianiline complex, a partial substitution of the polyether polyol with a polyether-ester polyol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.