申请人:Ciba-Geigy AG
公开号:US05149828A1
公开(公告)日:1992-09-22
Tetrahydrothiopyran compound of the formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, 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.
公式I的四氢硫代吡喃化合物##STR1##中,其中R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.5、R.sup.6、X和n如权利要求1中定义的,对于照相层中的染料和染料偶联剂是有效的稳定剂。特别地,它们提供光损伤的保护。最好与酚类抗氧化剂结合使用。