参考文献

US2460567 , ; Journal of the American Chemical Society, , vol. 56, p. 1583,1585 US2267687 , ; US2008017 , ; US2008032 , ; DE616786 , ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, , vol. 22, p. 273 Industrial and Engineering Chemistry, , vol. 30, p. 1269,1272