Henri Laurent

Title: Henri Laurent and His Patent for Purifying Aminopolyamide-Epichlorohydrin Resins.

Introduction

Henri Laurent is an inventor associated with Compiègne, France, and Atofina. His patent work addresses the purification of aminopolyamide-epichlorohydrin resins for applications where limiting toxic residues is important.

Latest Patents

The supplied information lists 1 patent for Laurent: “Process for obtaining aminopolyamide-epichlorohydrin resins with a 1,3-dichloro-2-propanol content which is undetectable by ordinary means of vapor-phase chromatography.” The process passes products from the successive condensation of aminopolyamides and epichlorohydrin through two activated-carbon columns. It produces aqueous resins with 1,3-dichloro-2-propanol levels undetectable by ordinary vapor-phase chromatography. The patent describes these resins as useful wet-strength additives for papers intended for medical, cosmetic, or food-contact applications.

Career Highlights

Laurent’s listed invention focuses on improving resin purity through activated-carbon treatment. The stated aim is to obtain resins free of toxic products for specialized paper-manufacturing uses. The supplied information identifies Atofina as his company affiliation.

Collaborations

Chantal Poulet and Thierry Dreyfus are identified as Laurent’s coworkers. The available information does not specify their roles in the patent or the invention.

Conclusion

Henri Laurent’s listed patent presents a purification process designed to reduce unwanted residues in aminopolyamide-epichlorohydrin resins and support their use in sensitive paper applications.