Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1993-02-19
1994-04-19
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528128, 528167, 528169, 528183, 528188, 528362, 528399, C08G 7902
Patent
active
053046250
ABSTRACT:
Phosphazene-containing amines having at least one amine or substituted amine moiety reactive with nitrile groups of the phthalonitrile monomers or oligomeric resins are useful curing agents for phthalonitriles. Typically, the phosphazene-containing amines useful as curing agents in the present invention have the formula: ##STR1## wherein each of X.sub.1-6 is a hydrogen, an unsubstituted amine group, or an amine group substituted with C.sub.1 -C.sub.12 alkyl groups or aromatic groups, at least one of X.sub.1-6 includes an amine group, and each of R'.sub.1-6 is an alkyl, aromatic, or alkyl-substituted aromatic moiety, or a linear polymer of the phosphazene-based amine monomer. The curing agents enhance the speed of cure and also add flame retardancy to the cured polymers.
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Zeldin et al., Inorganic and Inorganic Polymers, "Macromolecules Containing Silicon, Phosphorus, and Other Inorganic Elements," ACS Symposium Series 360, American Chemical Society, Washington, D.C. 1988, pp. 250-312.
Anderson Harold D.
Edelberg Barry A.
McDonnell Thomas E.
The United States of America as represented by the Secretary of
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