Ladder polymers containing conjugated double bonds

Details Ladder polymers containing conjugated double bonds Ladder polymers containing conjugated double bonds

1995-03-21

1997-10-21

Tsang, Cecilia J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From ketone or ketene reactant

528271, 528396, 528397, 528480, 528491, 528492, 252500, C08G 0600

Patent

active

056797605

ABSTRACT:
The present invention relates to polymers with an extended system of conjugated double bonds constructed as homo and/or heterocyclic rings which are interlinked in pairs so that one ring is joined to the neighboring one at two adjacent atoms in the ring, in which one of these connections is made by a chemical bond to a ring atom of the neighboring ring and the other via a carbon, nitrogen, oxygen or sulphur atom to an atom of the neighboring ring adjacent said ring atom, their production and use in electrical, electronic and opto-electronic components.

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patent: 4452725 (1984-06-01), Wellinghoff et al.
patent: 4568483 (1986-02-01), Naarmann et al.
patent: 4618453 (1986-10-01), Kim
patent: 4729851 (1988-03-01), Braunling et al.
patent: 4771111 (1988-09-01), Tieke et al.
Webster II Dictionary, Riverside Edition, p. W1 Def of "Radical" (1979).
Bailey et al., "New Spiro Polymers Containing Five, Six, Seven+Eight Membered Rings", Polymer Preprints CA #78:16492 (1971).
Stille et al., "Hydrocarbon Ladder Aromatics", Journal of Polymer Science, CA #73:77732 (1970).

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