发明授权
US3919265A Diaminobenzoquinones, the method of producing the same and hair dye compositions containing the same 失效
二氨基苯醌,其制备方法和含有它们的染发剂组合物

Diaminobenzoquinones, the method of producing the same and hair dye compositions containing the same
摘要:
2,5-DIAMINO-1,4-BENZOQUINONES ARE USED IN THE PRODUCTION OF HAIR DYE COMPOSITIONS AND CAN BE PREPARED BY CONDENSING A CORRESPONDING 3-AMINO-4-METHOXY PHENOL DERIVATIVE ON ONE OF A CORRESPONDING HYDROXY ANILINE OR PHENYLENEDIAMINE DERIVATIVE, A CORRESPONDING BENZOQUINONE IMINE DERIVATIVE OR A CORRESPONDING NITROSO DERIVATIVE.
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