Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1981-06-03
1983-02-22
Cannon, James C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428241, 428247, 428251, 428286, 428324, 428428, 428441, 428480, 428521, B32B 524, B32B 1904, B32B 1906, B32B 2732
Patent
active
043748929
ABSTRACT:
An electrical insulation tape is disclosed comprising a sheet of mica paper impregnated with a B-staged polybutadiene polymer, a woven glass scrim next to the mica paper, a block copolymer sealing layer next to the glass scrim and optionally a polymeric sealing layer next to the mica. It has been found that the inclusion of about 0.1% to about 0.35% by weight of an organo titanate containing long saturated chains or reactive functional groups impregnated into the mica not only improves the moisture resistance of the tape, and therefore its useful life, but improves the dissipation factor as well.
REFERENCES:
patent: 2562004 (1951-07-01), Watson et al.
patent: 2835642 (1958-05-01), Safford
patent: 2948640 (1960-08-01), Corrin
patent: 4157414 (1979-06-01), Smith
patent: 4286010 (1981-08-01), Staley et al.
Cannon James C.
Essex Group Inc.
Gwinnell Harry J.
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