Hydrotalcites, syntheses, and uses

US6979708B2 · kind B2 · utility

Assignee

• Sunoco, Inc. (R&M) · US

Inventors

• Thomas S. Brima · Cincinnati, US
• George Gallaher · Oakmont, US
• Sehyun Kim · Murrysville, US
• Steven Monaco · Venetia, US
• Edwin Townsend · Pittsburgh, US
• Masaki Fujii · Dorpsstraat, US

Key dates

• Filing date: Aug 23, 2001
• Grant date: Dec 27, 2005
• Expiry date: Aug 26, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/61
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Synthetic hydrotalcites of the general formula[M2+1−xM3+x(OH)2]x+[An−x/n.mH2O]x−where M2+ is a divalent cation, M3+ is a trivalent cation and An− is an organic anion selected from straight chain carboxylates of C16-C18 acids, carboxylates of aromatic acids, carboxylates of acrylic acid, unsaturated carboxylates of methacrylic acid and unsaturated carboxylates of vinylacetic acid are disclosed, along with methods of synthesis and uses.