Patent US6440644B1 successfully refreshed from Google Patents.
Patent EP0376032A2 successfully refreshed from Google Patents.
EP0376032A2
Expired / Lapsed
EP
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Stilbene dyes and films or sheets containing the same
Assignee: Bayer AG
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Filing: 1989-12-09
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Granted: —
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Expires: 2009-12-09
Abstract
Abstract Translated from German Farbstoffe, die in Form der freien Säure der Formel <IMAGE> in der X und Y die in der Beschreibung angegebenen Bedeutungen haben, entsprechen, sowie lichtpolarisierende Filme oder Folien enthaltend ein organisches Polymer, vorzugsweise ein Vinylalkoholhomo- oder -copolymer und Farbstoffe I. Dyes which, in the form of the free acid of the formula <IMAGE> in which X and Y have the meanings given in the description, and light-polarizing films or sheets comprising an organic polymer, preferably a vinyl alcohol homo- or copolymer and dyes I.
Inventors
- 👤 Uwe Dr. Claussen
- 👤 Friedrich W. Dr. Kröck
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/52; C09K19/60; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C09B; C09B35/00; C09B35/02; C09B35/039; C09B35/205; C09B35/215; C09B56/00; C09B56/04; G; G02; G02B; G02B1/00; G02B1/08
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