Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith

US6638997B2 · kind B2 · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• James P. Galbo · Wingdale, US
• Gerald A. Capocci · Greenwich, US
• Nancy Cliff · Ringwood, US
• Robert Detlefsen · Putnam Valley, US
• Michael P. DiFazio · Mobile, US
• Ramanathan Ravichandran · Nanuet, US
• Peter Solera · Suffern, US

Key dates

• Filing date: Sep 27, 2001
• Grant date: Oct 28, 2003
• Expiry date: Dec 12, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D211/98
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Hindered amines substituted on the N-atom with an —O—E—OH moiety are particularly effective in stabilizing polyolefin and automotive coating compositions against the deleterious effects of oxidative, thermal and actinic radiation where the presence of the OH group on the compounds adds important properties not attainable by the use of normal —O—E moieties.