Patent ID: 8779213

Claim:
A process for manufacturing a bio-sourced glutaraldehyde compound with a mass content of 14 C such that the 14 C/ 12 C ratio is between 0.25×10 −12 and 1.2×10 −12 comprising, first, subjecting a glycerol charge derived from methanolysis of plant oils or animal fats to a dehydration reaction leading to acrolein, according to the reaction CH 2 OH—CHOH—CH 2 OH→CH 2 =CH—CHO+2H 2 O, and then, second, reacting the acrolein obtained with a vinyl alkyl ether synthesized by reacting a light alcohol with acetylene obtained from non-fossil natural raw materials, in a Diels-Alder cyclization reaction leading to 2-alkoxy-3,4-dihydropyran and, third, subjecting the 2-alkoxy-3,4-dihydropyran to a hydrolysis leading to glutaraldehyde.