Patent ID: 7956211

Claim:
Process for manufacturing in water a compound having a chemical structure in accordance with the following formula (I): where R 1 designates an alkyl radical having 2 to 10 carbon atoms, and/or an aromatic radical optionally substituted by an alkyl chain having 1 to 4 carbon atoms; and where M 1 and M 2 designate a hydrogen atom, an amine salt, ammonium, sodium, lithium or potassium, and are identical or different, comprising: a) bringing into contact by pouring an aqueous solution of disodic trithiocarbonate Na 2 CS 3 or an aqueous solution of dipotassic trithiocarbonate K 2 CS 3 on a solution of a halogenated salt, which salt has a chemical structure in accordance with the following formula (II): where R 1 designates an alkyl radical having 2 to 10 carbon atoms, or an aromatic radical optionally substituted by an alkyl chain having 1 to 4 carbon atoms; where M designates a hydrogen atom, an amine salt, ammonium, sodium, lithium or potassium; where X designates a halogen; and b) acidification of the resulting compound after step a).