Process for preparing s-triazine prepolymers by condensation of

Details Process for preparing s-triazine prepolymers by condensation of Process for preparing s-triazine prepolymers by condensation of

1974-12-04

1976-08-31

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 47R, 260249CS, 260248CS, C08G 7306

Patent

active

039780287

ABSTRACT:
S-Triazine prepolymers, useful in the preparation of polytriazines, are prepared by condensing an aromatic dihydroxy or polyhydroxy compound with less than one-third mol of cyanuric chloride per hydroxy group. Thereafter the free hydroxy groups in the condensation product are reacted with a cyanogen halide in the presence of a base. The condensation is preferably carried out in a melt at temperatures of from 100.degree.-240.degree.C.

REFERENCES:
patent: 3297639 (1967-01-01), Picklesimer
patent: 3729471 (1973-04-01), Robin, et al.
patent: 3738962 (1973-06-01), Toudos, et al.
patent: 3775411 (1973-11-01), Brunetti
patent: 3784504 (1974-01-01), Feasey et al.

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