Stock material or miscellaneous articles – Composite – Of polyisocyanurate
Patent
1990-04-09
1991-03-12
Schofer, Joseph L.
Stock material or miscellaneous articles
Composite
Of polyisocyanurate
B32B 2700
Patent
active
049992481
ABSTRACT:
Articles made from amorphous dipolymers of perfluoro-2,2-dimethyl-1,3-dioxole with tetrafluoroethylene having high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, include, among others, substrates for circuit boards, composites, sheets and films, optical lenses, and electronic current carrying devices.
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E. I. Du Pont de Nemours and Company
Sarofin N.
Schofer Joseph L.
Steyermark Paul R.
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