US Patent Issued to Arkema France on March 4 for "Rheological additive based on optionally biosourced 1,5-pentamethylenediamine" (French Inventors)

ALEXANDRIA, Va., March 5 -- United States Patent no. 12,240,795, issued on March 4, was assigned to Arkema France (Colombes, France).

"Rheological additive based on optionally biosourced 1,5-pentamethylenediamine" was invented by Carine Fouilliart (Verneuil en Halatte, France), Virginie Ducastel (Verneuil en Halatte, France), Vincent Leroy (Verneuil en Halatte, France) and Dmitri Colesnic (Verneuil en Halatte, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a rheology additive, according to which A) said additive consists of: a) at least one symmetrical fatty diamide of formula (I): (AGH)-CONH-(PMDA)-NHCO-(AGH) (I) with: (AGH): hydroxylated fatty acid residue R1CO2H, wi...