G - Physics – 03 – C
Patent
G - Physics
03
C
G03C 1/498 (2006.01) C09B 57/00 (2006.01) G03C 1/83 (2006.01)
Patent
CA 2181561
Dihydroperimidine squarylium dyes have been found to be particularly effective when used as acutance and antihalation dyes for photothermographic and photographic articles. The dihydroperimidine squarylium dye has the nucleus (1).
On a découvert que les colorants du type dihydropérimidine squarylium sont particulièrement efficaces comme produits empêchant la formation d'halos et améliorant la netteté d'articles de photothermographie et de photographie. Le colorant de type dihydropérimidine squarylium a le noyau illustré par la figure (I).
Gomez Charles W.
Harring Lori S.
Helland Randall H.
Ramsden William D.
Thien Tran Van
Minnesota Mining And Manufacturing Company
Smart & Biggar
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