Stabilization of household, body-care and food products by using benzotropolone containing plant extracts and/or related benzotropolone derivatives

US9663442B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Barbara Winkler · Lörrach, DE
• Oliver Reich · Weil am Rhein, DE
• Alexander Mantler · Rheinfelden (Baden), DE
• Reinhold Öhrlein · Rheinfelden (Baden), DE
• Walter Fischer · Reinach, CH
• Albert Schneider · Weil am Rhein, DE

Key dates

• Filing date: Jun 6, 2014
• Grant date: May 30, 2017
• Expiry date: Jun 6, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2602/12
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Disclosed is the use of benzotropolone derivatives of formulawhereinR1, R2 and R7 independently from each other are hydrogen; C1-C3alkyl; or COR8;R3 is hydrogen; or COOR9 R4 is hydrogen; or C1-C3alkyl;R5 is hydrogen; hydroxy; C1-C3-alkoxy; or —O—(CO)—R10;R6 is hydrogen; C1-C3alkyl; or COR8; orR5 and R6 together may form a five or six membered ring; orR6 and R7 together form a five or six membered ring; andR8, R9, R10 independently of each other are C1-C30alkyl;for protecting body-care and household products from photolytic and oxidative degradation.