Candle wax compositions stabilized with UV absorber-metal combinations

US6740132B2 · kind B2 · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Mervin Wood · Riverview, US
• James L. Hyun · Danbury, US
• Joseph Suhadolnik · Ossining, US
• Kevin Trainor · Brewster, US
• Mark McCusker · Sandy Hook, US
• Andrea Smith · Wingdale, US

Key dates

• Filing date: Dec 12, 2002
• Grant date: May 25, 2004
• Expiry date: Dec 12, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11C5/002
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Dyes and pigments present in candle wax compositions are particularly well stabilized against color fade or color change by a combination of a UV absorber and a metal compound, particularly a tin compound. The further addition of a hindered amine or antioxidant is highly beneficial.