发明名称 |
PIGMENT YELLOW BASED ON QUINOXALINE AND METHOD FOR PREPARING THE SAME |
摘要 |
PURPOSE: Provided are pigment yellow based on quinoxaline which is ecofriendly and has excellent solvent resistance and colorfastness to light, and a method for preparing the same. CONSTITUTION: The pigment yellow based on quinoxaline represented by formula 1 is characterized in that it is prepared using aminoquinoxaline represented by formula 9, as a diazotized compound. In the formulas, R, R1 and R2 are the same or different, and hydrogen, C1-C4 alkyl group, nitro(-NO2), C1-C2 alkoxy group, C1-C18 heterocycle, methyl ester(COOCH3) or halogen group such as chloro or bromo. The pigment yellow is prepared by the steps of (i) diazotizing amino quinoxaline compound represented by formula 9; (ii) dissolving coupler represented by formula 11 into solvent; (iii) mixing two reaction solution obtained from the steps (i) and (ii) at 0-5 deg.C; and (iv) adding base to the solution mixed in the step(iii) to adjust pH to 6-7 with stirring. In the formula 11, R, R1 and R2 are the same as the above.
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申请公布号 |
KR20020031450(A) |
申请公布日期 |
2002.05.02 |
申请号 |
KR20000061923 |
申请日期 |
2000.10.20 |
申请人 |
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY |
发明人 |
JUN, GEUN;KIM, JIN SU;KIM, TAE GYEONG;KWON, EUN GYEONG;OH, SE HWA;PARK, MYEONG SUN;SHIN, JONG IL;SHIN, SEUNG RIM |
分类号 |
C09B46/00;(IPC1-7):C09B46/00 |
主分类号 |
C09B46/00 |
代理机构 |
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