Hydrotalcites, syntheses, and uses

US6846870B2 · kind B2 · utility

Assignee

• Sunoco, Inc. (R&M) · US

Inventors

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

Key dates

• Filing date: Jan 11, 2002
• Grant date: Jan 25, 2005
• Expiry date: May 9, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/61
• WIPO field: Macromolecular chemistry, polymers
• 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, unsaturated carboxylates of vinylacetic acid and C2 and higher organic acids containing heteroatoms such as nitrogen, phosphorous, sulfur and halogens are disclosed, along with methods of synthesis and uses.