• 한국인쇄학회지
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• 제1권1호
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• pp.69-75
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• 1983

사전유제용 gelatin경화제 중에서 Formai-dehyde, dai;dehyde, n-Methylol 화합물, Ketone, 카르복실산 및 카바밀산과 그 유도체, a-Trizine 경화제에 관하여 고찰하였다. 대부분의 경화제가 gelatin에 있는 -OH기와의 반응으로 가교결합이 생성되며 amino산의 카르복실산과 amido결합으로 가교결합을 이룬다. Glutaraldehyde는 안정성이 뛰어난 Pyridinium을 생성하였으며 Ketone은 2.5-He-xadione이나 3-Hexena-2.5dione이 사용되며 s-Triazine의 Olefinic 경화제는 2.4-dichloro-6-hydroxy-S-Triazine의 나트륨염이 유제경화용으로 사용된다.

• Bulletin of the Korean Chemical Society
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• 제30권12호
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• pp.3053-3056
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• 2009

The title compound, ${\alpha},{\alpha}$-dichloro-o-methylacetophenone, was prepared and its photochemical behavior was investigated. Addition of an extra chlorine at alpha position to the carbonyl showed many different features from photochemical reactivities of mono chloro analogue, 2,5-dimethylphenacyl chloride. In benzene, a rearrangement product with a formal 1,5-Cl shift and a reduction product were formed beside indanone. In methanol, solvolysis and cyclization of a common dienol intermediate occurred at comparable reaction rates.

• 한국인쇄학회지
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• 제1권1호
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• pp.57-60
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• 1983

Among the gelatin hardness for photographic emulaion, the formaldehyde, dialdehydes, n-Methylol compounds, ketones, carbonylic acid and carbamic acid derivatives, and s-Triazine derivatives were studied The greater purts of hardeners formed cross-link by the reaction with E-Amino group in the lysine and OH group in the hydroxylysine. Glutaraldehyde produced most stable cross-link due to the formation of pyridinum ion. 2.5- hexanedione and 3-hexene-2,5-dione possible to use as the ketone hardner. The sodium salt of 2.4-dichloro-6-hydroxy-S-Triazine was newly developed as the olefinic hardners for emulsion.