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EP0323408A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

2-(2-Hydroxyphenyl)-benztriazole derivatives

Assignee: Novartis AG
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Filing: 1988-12-21
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Granted: —
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Expires: 2008-12-21
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Abstract

Abstract Translated from German Benztriazole der Formel I, <IMAGE> worin R¹ und R² in ortho- und para-Stellung zur OH-Gruppe stehen und mindestens einer dieser Substituenten eine α-verzweigte Alkylgruppe ist, die in ω-Stellung eine polare Gruppe M enthält, sind flüssige oder niedrig-schmelzende Verbindungen, die UV-Licht absorbieren und als Stabilisatoren für organische Materialien verwendbar sind. M kann z.B. eine Ester-, Amid-, Hydroxyl-, Ether-, Amin-, Phosphonat-, Cyan-, Nitro-oder Ketogruppe sein. R³ kann H, Cl, Alkyl, Alkoxy oder eine Carboxylgruppe sein. Benzotriazoles of the formula I, <IMAGE> in which R 1 and R 2 are ortho and para to the OH group and at least one of these substituents is an α-branched alkyl group which contains a polar group M in the ω position, are liquid or low-melting compounds that absorb UV light and can be used as stabilizers for organic materials. M can e.g. an ester, amide, hydroxyl, ether, amine, phosphonate, cyano, nitro or keto group. R³ can be H, Cl, alkyl, alkoxy or a carboxyl group.

Inventors

  • 👤 David G. Dr. Leppard
  • 👤 Mario Dr. Slongo
  • 👤 Jean Dr. Rody

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 20:52
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/3924; G03C7/39244; G03C7/39256; C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C07D249/20; C09; C09D; C09D7/00; C09D7/40; C09D7/48; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US3399173A Cited
GB1169859A Cited
EP0057160B1 Cited
EP0131468A2 Cited
EP0133164A2 Cited
EP0191582A1 Cited
DE3624811A1 Cited

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