C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/328
C07D 495/10 (2006.01) C07D 335/02 (2006.01) C07D 495/22 (2006.01) G03C 7/26 (2006.01) G03C 7/392 (2006.01)
Patent
CA 1333808
Tetrahydrothiopyran compound of the formula I (I) Image in which R1, R2, R3, R4, R5, R6, X and n are as defined in claim 1, are effective stabilizers for dyes and dye couplers in photographic layers. In particular, they provide protection from damage by light. They are preferably used in combination with a phenolic antioxidant.
578636
Leppard David G.
Rody Jean
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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