Process for preparation of benzoxazine compounds in solventless

Details Process for preparation of benzoxazine compounds in solventless Process for preparation of benzoxazine compounds in solventless

1994-05-18

1996-08-06

Shah, Mukund J.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

544 90, C07D26514, C07D26516

Patent

active

055435165

ABSTRACT:
A method for preparing a desired benzoxazine compound comprises preparing a substantially homogeneous reaction mixture that includes a phenolic compound; a primary amine; and an aldehyde, but no solvent other than for the solvency which the reactants may have for each other. Following its preparation, the reaction mixture is maintained at a temperature, and for a period sufficient to cause the reactants to combine chemically to form the desired compound.

REFERENCES:
patent: 5152939 (1992-10-01), Ishida
patent: 5266695 (1993-11-01), Ishida
Kopf, P. W. and Wagner, F. R, "Formation and Cure of Novolacs: NMR Study of Transient Molecules", Journal of Polymer Science, Polymer Chemistry Edition, vol. 11, 1973, 939-960.

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