Phenol-novolaks containing amino groups

Details Phenol-novolaks containing amino groups Phenol-novolaks containing amino groups

1984-01-06

1985-02-19

Schain, Howard E.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525481, 525491, 525504, 525502, 528107, 528127, 528128, 528162, 528163, 528154, 528157, 428436, 428524, C08L 6114, C08L 6116, C08G 816, C08G 828

Patent

active

045006911

ABSTRACT:
Phenol-novolaks containing amino groups of formulas VI and VII ##STR1## wherein R.sup.1 is halogen, nitro, alkyl, alkoxy or phenyl, R.sup.2 is hydrogen, alkyl, cycloalkyl, phenyl or furfuryl, R.sup.3 is hydrogen or alkyl, R.sup.4 and R.sup.5 independently are alkyl, halogen, nitro or cyano, and x is 1 to 8, are obtained by reacting the corresponding phenol-novolak with an aldehyde or ketone of formula II ##STR2## and with a substituted aniline of formula III or IV ##STR3## in a molar ratio of 1 mol of phenol-novolak to 2 mols of compound of formula II and to 2 mols of compound of formula III or IV in an acid medium at a pH value of 0.5 to 3.0. The phenol-novolaks containing amino groups are useful curing agents for epoxy resins and are also suitable as starting compounds for the preparation of epoxy resins.

REFERENCES:
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patent: 3558559 (1971-01-01), LeBlanc
patent: 3704269 (1972-11-01), Freeman et al.
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patent: 4278733 (1981-07-01), Benzinger
patent: 4396756 (1983-08-01), Baur et al.

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