One pot synthesis of [1,3]-oxazine and [1,3]-thiazine derivatives under thermal and microwave conditions
作者:S. Tumtin、I. T. Phucho、A. Nongpiur、R. Nongrum、J. N. Vishwakarma、B. Myrboh、R. L. Nongkhlaw
DOI:10.1002/jhet.280
日期:——
efficient synthesis of substituted benzo [1,3] oxazine and benzo [1,3] thiazine derivativesunder conventional heating, as well as microwave irradiation is reported. The compounds were obtained by the reaction of electron rich phenols, formaldehyde, and aromatic amines in methanol. Reactions which take 12–16 hr under conventional heating were successfully completed within a few minutes undermicrowave irradiation
[EN] BENZOXAZINES AND COMPOSITIONS CONTAINING THE SAME<br/>[FR] BENZOXAZINES ET COMPOSITIONS EN CONTENANT
申请人:CYTEC IND INC
公开号:WO2016109399A1
公开(公告)日:2016-07-07
A curable composition containing more than 80% by weight of a blend of benzoxazines, wherein the blend includes (A) one or more multifunctional benzoxazines and (B) a liquid, non-halogenated monofunctional benzoxazine. This composition has been found to be stable at high temperatures, e.g. 180°C-250°C, and suitable for making composite materials using conventional techniques such as prepregging and liquid resin infusion.
BENZOXAZINE CONTAINING COMPOSITIONS OF MATTER AND CURABLE COMPOSITIONS MADE THEREWITH
申请人:Ji Qing
公开号:US20100140542A1
公开(公告)日:2010-06-10
A composition of matter in liquid form at a temperature of 50° C. or less comprising a monofunctional benzoxazine compound embraced by the structure
where R is a member selected from C
1-40
alkyl, C
2-40
alkenyl, each of which being optionally substituted or interrupted by one or more O, N, S, C═O, COO, and NHC═O, and C
6-20
aryl,
m is 0-4, and
R
1
-R
5
are independently selected from C
1-10
alkyl, C
2-40
alkenyl, each of which being optionally substituted or interrupted by one or more O, N, S, C═O, COOH, and NHC═O, and C
6-20
aryl, and at least one of R
1
-R
5
are present, is provided.