Reaction products of pyrazine, pyridine, quinoline and quinoxali

Details Reaction products of pyrazine, pyridine, quinoline and quinoxali Reaction products of pyrazine, pyridine, quinoline and quinoxali

1986-03-17

1988-07-05

Daus, Donald G.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

546181, 546350, 546352, 544224, 544242, 544264, 544257, 544353, 544410, 544180, 548335, 548373, C07D21306, C07D21504, C07D24112, C07D23708

Patent

active

047556005

ABSTRACT:
Thermosettable prepolymers or resins are prepared by reacting (1) a pyrazine compound containing at least two substituent groups which have a hydrogen atom attached to a carbon atom which is attached to the ring such as tetramethylpyrazine, (2) a material containing at least two aromatic aldehyde groups, and (3) at least one of (a) a nitrogen containing aromatic heterocyclic compound containing at least one hydrogen atom attached to a carbon atom attached to the ring and a polymerizable unsaturated group such as 2-methyl-5-vinylpyridine or (b) an aldehyde containing at least one polymerizable unsaturated group such as 4-isopropenyl-1-cyclohexene-1-carboxaldehyde. These prepolymers or resins are curable to thermoset products having good mechanical and thermal properties by heat and pressure or by homopolymerization or copolymerization with N,N'-bis-imides such as 1,1'-(methylenedi-4,1-phenylene)bismaleimide. The prepolymers are suitable for preparing composites.

REFERENCES:
patent: 4500690 (1985-02-01), La Tulip

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