Compositions – Electrically conductive or emissive compositions – Elemental carbon containing
Reexamination Certificate
2006-05-09
2006-05-09
Kopec, Mark (Department: 1751)
Compositions
Electrically conductive or emissive compositions
Elemental carbon containing
C252S512000, C252S514000, C338S0220SD
Reexamination Certificate
active
07041238
ABSTRACT:
PTC conductive polymer composition includes organic polymer containing polyolefin components essentially consisting of 30˜40 w % high density polyethylene (HDPE), 20˜40 w % low density polyethylene (LDPE) and 10˜30 w % ethylene-acrylic-acid (EAA) or ethylene-vinyl-acetate (EVA), and 20˜30 w % high or low density polyethylene which is denaturated into maleic anhydride compound; 60˜120 w % electrical conductive particles dispersed into the organic polymer, the electrical conductive particles by weight of the organic polymer; and 0.2˜0.5 w % peroxidic cross-linking agent added for cross-linking reaction by weight of the organic polymer. Thus, it becomes possible to control PTC characteristics such as switching temperature and trip time of an electrical device by suitably adjusting an added amount of the polyethylene, which is denaturated into maleic anhydride compound.
REFERENCES:
patent: 3243753 (1966-03-01), Kohler
patent: 3823217 (1974-07-01), Kampe
patent: 3950604 (1976-04-01), Penneck
patent: 4188276 (1980-02-01), Lyons et al.
patent: 4272471 (1981-06-01), Walker
patent: 4414301 (1983-11-01), Constein
patent: 4425397 (1984-01-01), George
patent: 4426339 (1984-01-01), Kamath et al.
patent: 4427877 (1984-01-01), Dhingra
patent: 4429216 (1984-01-01), Brigham
patent: 4442139 (1984-04-01), Brigham
patent: 5880668 (1999-03-01), Hall
patent: 6059997 (2000-05-01), Hall
patent: 60-031548 (1985-02-01), None
patent: 61-181859 (1986-08-01), None
patent: 62-181347 (1987-08-01), None
patent: 02-021601 (1988-07-01), None
patent: 05-226112 (1992-02-01), None
patent: 1999-63872 (1999-07-01), None
Choi Soo-An
Han Joon-Koo
Kim Do-Yun
Ko Chang-Mo
Lee Jong-Ho
Jones Day
Kopec Mark
LG Cable Ltd.
LandOfFree
Conductive polymer having positive temperature coefficient,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Conductive polymer having positive temperature coefficient,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conductive polymer having positive temperature coefficient,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3584687