发明名称 |
Method of making bubble and foreign particle free electrically conductive polyurethanes |
摘要 |
A method of making an electrically conductive polyurethane elastomer that is substantially free of bubbles and foreign particles comprising: forming a prepolymer of a polylol and an isocyanate, forming a liquid mixture of an ionic conductive additive, an amount of cross linking agent and chain extenders sufficient to provide a crosslinked elastomer; filtering the liquid mixture of additive, crosslinking agents and chain extenders to remove foreign particles; preheating the liquid mixture to a temperature above the decomposition temperature of the additive, crosslinking agents and chain extenders in a degassing oven to degass to less than 5 mm of mercury to break any bubbles in the mixture and remove moisture; to a vacuum reactor mixer having two input ports add the prepolymer, the preheated degassed liquid mixture and mix under vacuum of less than 5 mm of mercury of a period of time to provide a uniform mixture: removing the mixture from the vacuum reactor mixer and form into the desired shape, cure the formed shape to an elastomer substantially free of bubbles and foreign particles.
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申请公布号 |
US5454980(A) |
申请公布日期 |
1995.10.03 |
申请号 |
US19930165792 |
申请日期 |
1993.12.13 |
申请人 |
XEROX CORPORATION |
发明人 |
SCHLUETER, JR., EDWARD L.;SMITH, JAMES F. |
分类号 |
G03G15/16;B65H5/02;B65H5/06;C08L75/00;C08L75/04;H01B1/00;H01B1/06;H01B1/12;(IPC1-7):C09D175/04 |
主分类号 |
G03G15/16 |
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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