Halogenated phenyl cyanates

Details Halogenated phenyl cyanates Halogenated phenyl cyanates

1987-11-13

1988-11-01

Rotman, Alan L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Cyanate esters

558422, 558421, C07C12200

Patent

active

047821787

ABSTRACT:
Phenyl cyanates substituted at both ortho positions and further substituted with at least one halo at the meta or para positions are prepared. Then enhance ignition resistance, fire retardance, and toughness of polytriazines when added in varying amounts to polycyanate monomers before cure.

REFERENCES:
Korshak, et al., Polymer Science USSR, A17, No. 1, pp. 23-27, 1975.
Brand et al., NASA Contractor Report 3185, 1979.
Grigat et al., Table 1, Angew. Chem. 79. 219 (1967).

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