Invention Grant
- Patent Title: Water-insoluble colorants, process for preparing them and their use
- Patent Title (中): 水不溶性着色剂，其制备方法及其用途
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Application No.: US676925Application Date: 1976-04-14
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Publication No.: US4041036APublication Date: 1977-08-09
- Inventor: Klaus Hunger
- Applicant: Klaus Hunger
- Applicant Address: DT Frankfurt am Main
- Assignee: Hoechst Aktiengesellschaft
- Current Assignee: Hoechst Aktiengesellschaft
- Current Assignee Address: DT Frankfurt am Main
- Priority: DT2516700 19750416
- Main IPC: C07D491/04
- IPC: C07D491/04 ; C07D491/052 ; C08K5/35 ; C09B57/00 ; C07D491/22
Abstract:
The condensation of barbituric acid, thiobarbituric acid or imino-barbituric acid with 2-hydroxy-3-carboxy-1-naphthaldehydes or their arylamides in a solvent at 20.degree. to 180.degree. C yields colored compounds which are useful as pigments.
Public/Granted literature
- US5800292A Tennis court boundary detection system Public/Granted day:1998-09-01
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