Detail of "20198-19-0"

Reference

Derivatives of 4-quinazolone as heat stabilizers for poly(vinyl chloride) and vinyl chloride-vinyl acetate copolymers

Derivatives of 4-quinazolone as heat stabilizers for poly(vinyl chloride) and vinyl chloride-vinyl acetate copolymers. Kasymova, S. S.; Masharipov, S. M.; Tadzhieva, Kh. S.; Makhmudov, S. A.; Yun, L. M.; Shakhidoyatov, Kh. M. (USSR). Deposited Doc., VINITI 2997-83, 7 pp. Avail. VINITI (Russian) 1983. DOCUMENT TYPE: Report CA Section: 37 (Plastics Manufacture and Processing) The stabilizing effect of 4-quinazolone [491-36-1], 2-amino-4-quinazolone (I) [20198-19-0], 2-amino-3-methyl-4-quinazolone (II) [91810-61-6] and 2-amino-3-methyl-6-nitro-4-quinazolone [91810-62-7] on PVC [9002-86-2] and vinyl acetate-vinyl chloride copolymer [9003-22-9] was studied. The highest heat resistance of the polymers was obtained by stabilization with I, and to a lower degree, with II, whereas the other quinazolone derivs. had no stabilizing effect on the polymers. The effect of mixts. of II with com. stabilizers Ca stearate or Ba-Cd stearate on the heat resistance of PVC depended nonmonotonically on the component ratio, whereas the effect of mixts. of I and other quinazolone derivs. with com. stabilizers increased with increasing content of the former.