发明名称 |
THERMOPLASTIC POLYURETHANE ELASTOMERS AND POLYUREA ELASTOMERS |
摘要 |
This invention relates to a method of fabricating a thermoplastic elastomer which comprises the steps of: (a) fabricating a polyol having a molecular weight of between about 2,000 and about 8,000 and having a level of end group unsaturation of no greater than 0.02 milliequivalents per gram of polyol, said polyol being fabricated in the presence of a double metal cyanide catalyst, (b) reacting said polyol with a diisocyanate to produce an isocyanate-terminated prepolymer, and (c) reacting said isocyanate-terminated prepolymer with a difunctional isocyanato-reactive chain extender in a mold or in an extruder in order to produce an elastomer characterized by a hardness of between a Shore A hardness of about 50 and a Shore D hardness of about 65. Also claimed is the elastomer produced by the above method utilizing a one-shot technique. |
申请公布号 |
WO9319110(A1) |
申请公布日期 |
1993.09.30 |
申请号 |
WO1993US01794 |
申请日期 |
1993.03.01 |
申请人 |
OLIN CORPORATION |
发明人 |
SMITH, CURTIS, PAGE;RAES, MAURICE, C.;REISCH, JOHN, W.;CHANDALIA, KIRAN, B.;O'CONNOR, JAMES, M. |
分类号 |
C08L75/08;C08G18/10;C08G18/48;C08G18/65;C08G18/66;C08G65/26;C08L75/00 |
主分类号 |
C08L75/08 |
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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