Invention Grant
US3211757A Symmetrical 4-halogeno-4', 4"-diarylamino-triphenylmethane dyestuffs
失效
对称4-卤代-4',4“ - 二芳基氨基 - 三苯基甲烷染料
- Patent Title: Symmetrical 4-halogeno-4', 4"-diarylamino-triphenylmethane dyestuffs
- Patent Title (中): 对称4-卤代-4',4“ - 二芳基氨基 - 三苯基甲烷染料
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Application No.: US19142262Application Date: 1962-05-01
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Publication No.: US3211757APublication Date: 1965-10-12
- Inventor: GUSTAV SCHAFER , FERDINAND QUINT
- Applicant: HOECHST AG
- Assignee: Hoechst AG
- Current Assignee: Hoechst AG
- Priority: DEF0033832 1961-05-03
- Main IPC: C09B11/20
- IPC: C09B11/20
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