• 한국염색가공학회지
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• 제3권3호
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• pp.1-5
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• 1991

Cationic azo dyes were synthesized by coupling aniline and its derivatives with 2,4-dimethyl imidazole as a coupler, and their photochromic behavior was investigated. The dyes exhibited little photochromism on wool, but to a considerable degree on Dacron T92(anionic modified polyester), the photochromism being prominent for the dye with electron-releasing substituent on diazo component. Little photochromism on wool can be attributed to a decreased mobility of dye by the various interactions between the dye and wool molecules, which interferes the cis-trans isomeriation of dye. On Dacron T92 there can not be any obstacle for the cis-trans isomerization of dye, hence reversible color change may occur. The electron-releasing substituent on diazo component may be helpful for the photochromism of dye by increasing the n-electron density of phenyl ring, which can stabilize the cis-form of the dye by the interaction with the positive charge of imidazole ring.

• 약학회지
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• 제18권2호
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• pp.133-144
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• 1974

The metal indicator, acidic azo dyes NN, EBT and Calcon are utilized to analyse quantitatively chlorpheniramine, tripelenamine and diphenhydramine forming insoluble ion pair in aqueous solution at proper pH values between the acidic azo dyes and the sample molecules, these compexes are extracted by organic polar solvents, and organic layer is determined spectrophotometrically. Generally, the absorption maxima of the complexes are shifted to longer wavelengths compare to the absorption maxima of the dyes themselves. The binding ratio of the ion pair forming complex molecules in chloroform soln, are as follows ; NN-antihistamines (chlorpheniramine, tripelennamine, diphenhydramine) are NN-1 to antihisamine-1, EBT-antihistamines are EBT-2 to antithistamines a and Calcon-antihistamines are Calcon-3 to antithistamines-1. These coomplexes in chloroform soln. are very stable, and show higher absorbance than the other organic polar solvents. The binding state of complexes were presumed intermolecular hydrogen bond by their infrared spectra. In the mixture solution of three samples, the aqueous phase is buffered at pH 1.0, and benzene is used to extract ion pair of diphenhydramine EBT complex selectively. At pH 1.0 of aqueous layer, Calon-diphenhydramine complex is also extracted selectively by benzene. However, in this case very small amount of chlorpheniramine-calcon calcon simultaneously. The binding state of diphenhydramine-EBT and diphenhydramine-calcon in benzene are smae as the complexes in chloroform. But the absorption maxima of the complexes in benzene are shifted to shorter wavelenlgths than the complexes in chloroform.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2006년도 임시총회 및 추계학술발표회
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• pp.102-104
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• 2006

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2006년도 춘계학술발표회 논문집
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• pp.120-122
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• 2006

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 1993년도 ACT 93
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• pp.489-503
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• 1993

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 1992년도 제1차 학술발표초록집
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• pp.25-25
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• 1992

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2010년도 제3회 국제학회
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• pp.51-52
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• 2010

• 한국식품위생안전성학회지
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• 제2권1호
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• pp.9-14
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• 1987

식품의 상품화에 따라 식품 첨가물의 사용이 증가되고 있다. 식품 첨가물로서 색소는 고유의 색소를 보존하기 어려운 식품에 따라 사용되며 tar 색소, 식물성 색소 및 광물성 색소로 나눌 수 있는데 tar 색소는 독성이 강한 것이 많으므로 현재 15종만이 법적으로 허용되어 있다. 이중 azo 화합물인 amaranth, tartrazine, sunset yellow, allura red에 대하여 흰 주위 hepatic azo reductase의 활성을 측정 비교하였고 이에 대한 flavin의 효과를 보았다. 1. Amaranth를 기질로 사용하여 kinetic constants $Km=645\;\mu\textrm{M}$, Vmax=50 n mol/min/mg protein의 값을 얻었다. 2. Amaranth의 농도를 일정하게 하고 FAD의 농도를 증가시켰을 때 hepatic azo reductase의 활성은 현저히 증가하였으나 NADPH-generating system에 의한 환원은 작은 증가를 나타냈다. 3. 기타 식용 azo 색소 tartrazine, sunset yellow, allura red를 기지로 azo reductase activity를 측정한 결과 sunset yellow는 amaranth와 비슷한 환원활성은 나타냈고, tartrazine은 보다 낮은 환원활성을 allura red는 보다 높은 환원활성을 나타냈으며, $300\;\mu\textrm{M}-FAD$에 의해 기질 모두에서 환원활성이 증가함을 알 수 있었다.

• 한국염색가공학회지
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• 제26권3호
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• pp.165-172
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• 2014

Novel super hydrophobic orange dyes having maximum absorption band at 450-500nm were synthesized to dye polyolefin fibers such as polypropylene and ultra high molecular weight polyethylene fibers, using 4-alkylanilines and ${\beta}$-naphthol. Their absorption spectra at visible range showed almost the same, which meant that the alkyl substituents introduced to chromophore did not affect on color appearance of the dyes. Considering both color strength and wash fastness, the decyl-substituted dye was determined as the optimum one practically. From the dyeing results at various conditions, the optimum dyeing was $130^{\circ}C$ for 1 hour with 5% owf of dyes. The good fastness ratings to washing, rubbing were obtained showing 4-5 for both fibers. Light fastness was also acceptable giving rating 3-4 for polypropylene fibers and rating 3 for ultra high molecular weight polyethylene fibers.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2008년도 제39차 학술발표회
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• pp.23-24
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• 2008

본 연구는 고 세탁견뢰도 특성을 가진 Phthalimed계 염료를 합성하고, 일반 PET 섬유 및 해도형 PET에 염색하여 염색거동과 견뢰도 특성에 대해 알아보았다. 대부분의 염료는 5급 이상의 세탁견뢰도를 가지며, 몇가지 염료는 70%이상의 염착률을 가진다.