High thermal stability melamine octamolybdate and use thereof as a smoke suppressant in polymer compositions

US11142630B2 · kind B2 · utility

Assignee

• J.M. Huber Corporation · US

Inventors

• Yue Liu · Foster City, US
• Aleksey Isarov · Kennesaw, US
• David Dwayne Temples · Albany, US
• David S. Reece · Carrollton, US
• Mitchell Lee Pierce · Fairmount, US

Key dates

• Filing date: Sep 23, 2019
• Grant date: Oct 12, 2021
• Expiry date: Sep 23, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2003/2227
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Processes for producing melamine octamolybdates having high thermal stability include a step of reacting molybdenum trioxide and melamine in an acidic aqueous system at a pH of less than or equal to about 4 to form a slurry of the melamine octamolybdate. The resulting melamine octamolybdate can be characterized by a decomposition onset temperature (or a temperature at a weight loss of 1%, or a temperature at a weight loss of 2%) on a thermogravimetric analysis curve of greater than 300° C., and is useful in polymer compositions as a smoke suppressant.