Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1990-11-19
1992-03-24
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528162, 528 99, C08G 816
Patent
active
050989863
ABSTRACT:
Normally liquid polyfunctional final Mannich condensates that are useful as curing agents for epoxy resins are prepared by reacting a para C.sub.1 -C.sub.15 alkyl phenol with formaldehyde and a first polyoxyalkylene diamine to form an intermediate Mannich condensate that is reacted, in turn, with formaldehyde and a second polyoxyalkylene diamine to form the final Mannich condensate, the first polyoxyalkylene diamine having the formula: ##STR1## wherein: n represents a positive number having a value of 1 to about 6, and
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The Mannich Reaction, Org. Reactions, I 303 (1942).
Lin Jiang-Jen
Speranza George P.
Jones Richard Lee
Kight III John
Park Jack H.
Priem Kenneth R.
Ries Carl G.
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