发明名称 |
Zero pressure device such as tires or run-flat rings |
摘要 |
A zero pressure device is composed of either a microcellular or homogeneous polyurethane made by reacting an organic polyisocyanate with at least three polyols, a monomeric polyol of 2 to 3 hydroxyls having a molecular weight of less than 250, a polyester polyol of 2 to 3 hydroxyls having a molecular weight of 800 to 3000 and a polyether polyol of 2 to 3 hydroxyls having a molecular weight of 4 to 7000. When the zero pressured device is a run-flat ring for a tire-wheel assembly, it has an average density of 60 to 65 pounds per cubic foot and 30 to 42 pounds per cubic foot when it is a tire.
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申请公布号 |
US4125660(A) |
申请公布日期 |
1978.11.14 |
申请号 |
US19760751936 |
申请日期 |
1976.12.17 |
申请人 |
THE GOODYEAR TIRE & RUBBER COMPANY |
发明人 |
WHITE, JOHN R.;MURRAY, FRANK J.;BECHT, CLETUS A. |
分类号 |
B60C1/00;B60C7/10;B60C17/06;C08G18/10;C08G18/66;C08G18/79;(IPC1-7):C08G18/48;C08G18/14 |
主分类号 |
B60C1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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