公开(公告)号：US5093036A

公开(公告)日：1992-03-03

申请号：US247026

申请日：1988-09-20

申请人： Jeff Shafe ,  O. James Straley ,  Ravinder K. Oswal ,  Gordon McCarty ,  Amitkumar N. Dharia

发明人： Jeff Shafe ,  O. James Straley ,  Ravinder K. Oswal ,  Gordon McCarty ,  Amitkumar N. Dharia

IPC分类号： C09D11/00 ,  H01B1/24 ,  H01C7/02 ,  H05B3/14

CPC分类号： H05B3/146 ,  H01C7/027

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。

公开(公告)号：US5181006A

公开(公告)日：1993-01-19

申请号：US805212

申请日：1991-12-11

申请人： Jeff Shafe ,  O. James Straley ,  Gordon McCarty ,  Ravinder K. Oswal ,  Amitkumar N. Dharia

发明人： Jeff Shafe ,  O. James Straley ,  Gordon McCarty ,  Ravinder K. Oswal ,  Amitkumar N. Dharia

IPC分类号： H01C7/02 ,  H05B3/14

CPC分类号： H01C7/027 ,  H05B3/146

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。

公开(公告)号：US4980541A

公开(公告)日：1990-12-25

申请号：US416748

申请日：1989-10-03

申请人： Jeff Shafe ,  O. James Straley ,  Gordon McCarty ,  Ravinder K. Oswal ,  Bernadette A. Trammell

发明人： Jeff Shafe ,  O. James Straley ,  Gordon McCarty ,  Ravinder K. Oswal ,  Bernadette A. Trammell

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。