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公开(公告)号：US5093036A
公开(公告)日：1992-03-03
申请号：US247026
申请日：1988-09-20
摘要： A polymer thick film ink which exhibits PTC behavior comprising an organic polymer which is crystalline, an active solvent suitable for dissolving the polymer, and carbon black which has a pH of less than 4.0. The ink is particularly useful in producing electrical devices such as heaters and circuit protection devices.
摘要翻译： 一种聚合物厚膜油墨，其表现出包括结晶的有机聚合物，适用于溶解聚合物的活性溶剂和pH小于4.0的炭黑的PTC行为。 该油墨特别适用于制造诸如加热器和电路保护装置的电气装置。
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2.发明授权Method of making an electrical device comprising a conductive polymer composition 失效制造包含导电聚合物组合物的电气装置的方法
公开(公告)号：US5181006A
公开(公告)日：1993-01-19
申请号：US805212
申请日：1991-12-11
摘要： A polymer thick film ink which exhibits PTC behavior comprising an organic polymer which is crystalline, an active solvent suitable for dissolving the polymer, and carbon black which has a pH of less than 4.0. The ink is particularly useful in producing electrical devices such as heaters and circuit protection devices.
摘要翻译： 一种聚合物厚膜油墨，其表现出包括结晶的有机聚合物，适用于溶解聚合物的活性溶剂和pH小于4.0的炭黑的PTC行为。 该油墨特别适用于制造诸如加热器和电路保护装置的电气装置。
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公开(公告)号：US4980541A
公开(公告)日：1990-12-25
申请号：US416748
申请日：1989-10-03
IPC分类号： H01C7/02
CPC分类号： H01C7/027
摘要： Electrical devices with improved resistance stability comprise a PTC element comprising a conductive polymer and two electrodes. The conductive polymer composition comprises an organic crystalline polymer and carbon black with a pH of less than 5.0. Particularly preferred conductive polymer compositions comprise carbon blacks which have a pH of less than 5.0, a dry resistivity R.sub.CB and a particle size D in nanometers such that R.sub.CB /D is at most 0.1. Electrical devices of the invention include heaters and circuit protection devices.
摘要翻译： 具有改进的电阻稳定性的电气装置包括包含导电聚合物和两个电极的PTC元件。 导电聚合物组合物包含有机结晶聚合物和pH小于5.0的炭黑。 特别优选的导电聚合物组合物包含pH小于5.0的炭黑，干电阻率RCB和颗粒尺寸D，以使得RCB / D为0.1以下。 本发明的电气装置包括加热器和电路保护装置。
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公开(公告)号：US5250226A
公开(公告)日：1993-10-05
申请号：US202165
申请日：1988-06-03
CPC分类号： H01C7/028
摘要： Conductive polymer compositions which exhibit PTC behavior comprising a first polymeric component which may be crystalline, a second component, and a particulate conductive filler. The second component may comprise either a polymer which exhibits side chain crystallization or a crystalline material which has a sharp melting point and has poor physical properties at room temperature and/or exhibits no melt strength at elevated temperatures. The compositions are particularly useful in electrical devices which exhibit "square" resistance vs. temperature characteristics.
摘要翻译： 显示PTC行为的导电聚合物组合物包含可以是结晶的第一聚合物组分，第二组分和颗粒状导电填料。 第二组分可以包括具有侧链结晶的聚合物或具有尖锐熔点并且在室温下具有差的物理性能和/或在升高的温度下不显示熔体强度的结晶材料。 该组合物特别适用于显示“平方”电阻与温度特性的电气装置。
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公开(公告)号：US4719335A
公开(公告)日：1988-01-12
申请号：US051439
申请日：1987-05-19
申请人： Neville S. Batliwalla , Michael C. Jones , Ravinder K. Oswal , Jeff Shafe , Bernadette A. Trammell
发明人： Neville S. Batliwalla , Michael C. Jones , Ravinder K. Oswal , Jeff Shafe , Bernadette A. Trammell
CPC分类号： H05B3/34 , H01C7/027 , H05B3/06 , H05B3/146 , H05B2203/006 , H05B2203/013 , H05B2203/017 , H05B2203/02
摘要： A number of improvements to electrical devices, particularly sheet heaters, comprising conductive polymer compositions, are provided. The preferred heater has the following features (a) it comprises a laminar resistive element and a plurality of electrodes which are so positioned that the predominant direction of current flow is parallel to the faces of the laminar element, (b) it comprises a laminar insulating element adjacent to but not secured to the electrodes and the resistive element; (c) it comprises a metallic foil, which acts as a ground plane and is positioned adjacent the insulating element but is not secured thereto; (d) it comprises a dielectric layer intimately bonded to the resistive element and to the electrodes.The invention also provides an electrical device comprising first and second members having different resistivities, and a thin contact layer of intermediate resistivity positioned between the first and second members.
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公开(公告)号：US4761541A
公开(公告)日：1988-08-02
申请号：US51438
申请日：1987-05-19
申请人： Neville S. Batliwalla , Michael C. Jones , Ravinder K. Oswal , Jeff Shafe , Bernadette A. Trammell
发明人： Neville S. Batliwalla , Michael C. Jones , Ravinder K. Oswal , Jeff Shafe , Bernadette A. Trammell
CPC分类号： H01C7/027 , H05B3/06 , H05B3/146 , H05B3/34 , H05B2203/006 , H05B2203/013 , H05B2203/017 , H05B2203/02
摘要： A number of improvements to electrical devices, particularly sheet heaters, comprising conductive polymer compositions, are provided. The preferred heater has the following features (a) it comprises a laminar resistive element and a plurality of electrodes which are so positioned that the predominant direction of current flow is parallel to the faces of the laminar element, (b) it comprises a laminar insulating element adjacent to but not secured to the electrodes and the resistive element; (c) it comprises a metallic foil, which acts as a ground plane and is positioned adjacent the insulating element but is not secured thereto; (d) it comprises a dielectric layer intimately bonded to the resistive element and to the electrodes.The invention also provides an electrical device comprising first and second members having different resistivities, and a thin contact layer of intermediate resistivity positioned between the first and second members.
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公开(公告)号：US4777351A
公开(公告)日：1988-10-11
申请号：US53610
申请日：1987-05-20
申请人： Neville S. Batliwalla , Michael C. Jones , Ravinder K. Oswal , Jeff Shafe , Bernadette A. Trammell
发明人： Neville S. Batliwalla , Michael C. Jones , Ravinder K. Oswal , Jeff Shafe , Bernadette A. Trammell
CPC分类号： H05B3/146 , H01C7/027 , H05B3/06 , H05B3/34 , H05B2203/006 , H05B2203/013 , H05B2203/017 , H05B2203/02
摘要： A number of improvements to electrical devices, particularly sheet heaters, comprising conductive polymer compositions, are provided. The preferred heater has the following features (a) it comprises a laminar resistive element and a plurality of electrodes which are so positioned that the predominant direction of current flow is parallel to the faces of the laminar element, (b) it comprises a laminar insulating element adjacent to but not secured to the electrodes and the resistive element; (c) it comprises a metallic foil, which acts as a ground plane and is positioned adjacent the insulating element but is not secured thereto; (d) it comprises a dielectric layer intimately bonded to the resistive element and to the electrodes.The invention also provides an electrical device comprising first and second members having different resistivities, and a thin contact layer of intermediate resistivity positioned between the first and second members.
摘要翻译： 提供了包括导电聚合物组合物的电气设备，特别是片状加热器的许多改进。 优选的加热器具有以下特征（a）它包括层状电阻元件和多个电极，其定位使得电流的主要方向平行于层状元件的表面，（b）它包括层状绝缘 元件与电极和电阻元件相邻但不固定; （c）它包括金属箔，其用作接地平面并且位于邻近绝缘元件但不固定到绝缘元件上; （d）它包括紧密结合到电阻元件和电极的电介质层。 本发明还提供了包括具有不同电阻率的第一和第二构件的电气装置，以及位于第一和第二构件之间的中间电阻的薄接触层。
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