Location History:
- Ste Foy-Les-Lyon, FR (1988)
- Sainte Fay Les Lyon, FR (1989)
- Saint-Foy les Lyon, FR (1992)
- Sainte Foy les Lyon, FR (1979 - 2000)
Company Filing History:
8 out of 759 
6 out of 202 
2 out of 521 Years Active: 1979-2000
Title: **Innovator Michel Letoffe: Pioneering Advances in Polymer Crosslinking**
Introduction
Michel Letoffe, an accomplished inventor based in Sainte Foy les Lyon, France, has made significant contributions to the field of polymer technology. With an impressive portfolio of 16 patents, Letoffe's work focuses primarily on accelerator systems that enhance the properties of polymers. His innovations reflect a deep understanding of chemical processes and material science.
Latest Patents
Among his latest patents, Letoffe has developed an accelerator system for the cold crosslinking of polymers, specifically designed for those that harden upon exposure to moisture through hydrolysis and condensation. The system comprises a unique formulation that includes:
- (C) X parts by weight of a catalyst for crosslinking the polymers, ranging from 0.01 to 10.
- (E) Y parts by weight of a solid inorganic compound containing water in the form of hydration and/or capillary condensation, with the quantity ranging from 0.5 to 40 parts by weight. This can represent up to 70% of the weight of the inorganic compound.
- (F) Z parts by weight of fillers, which can range from 0 to 50.
- (D) 100 - (x + Y + z) parts by weight of a diluent or solvent for the catalyst, maintaining a dynamic viscosity of 50 to 200,000 mPa.s at 25°C.
The combination of these elements results in a manipulable paste that accelerates silicone compositions reacting to moisture in the air.
Career Highlights
Letoffe's career boasts significant roles in reputable companies such as Rhone-Poulenc Chimie and Rhone-Poulenc Specialités Chimiques. His experience in these organizations has facilitated the advancement of polymer technologies and underscores his dedication to innovation in the chemical industry.
Collaborations
Throughout his professional journey, Letoffe has collaborated with notable colleagues, including Patrice Perrin and Pierre-Michel Peccoux. These partnerships have contributed to the development of cutting-edge technologies in the field of polymers.
Conclusion
Michel Letoffe exemplifies the spirit of innovation within the domain of polymer science. His extensive patent repertoire and collaborative efforts mark him as a leading figure in the acceleration of polymer crosslinking technologies. With each new invention, Letoffe continues to push the boundaries of what is possible in material science.