Company Filing History:

6 out of 521

Rhone-poulenc Industries

patents

Years Active: 1978-2002

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6472492 - Process for the manufacture of multifunctional polyorganosiloxanes (POSs) by dehydrocondensation and hydrosilylation, and device for carrying out this process (2002-10-29),

2. 4791029 - Aqueous emulsions of organopolysiloxane compositions adapted for coating (1988-12-13),

3. 4201824 - Hydrophilic polyurethanes and their application as soil-release, (1980-05-06),

4. 4180519 - Process for obtaining and product acrylic monomers useful in the (1979-12-25),

5. 4159978 - Polyacetal polymers and their application as soil release and anti-soil (1979-07-03),

6. 4150946 - Water-soluble polyurethanes and compositions and application thereof to (1979-04-24),

7. 4110284 - Polyurethane latexes from sulfonate prepolymer, aqueous chain extension (1978-08-29),

8. 4107056 - Novel polyacetal polymers and their application as a soil-release and (1978-08-15),

9. 4068035 - Hydrophilic polyurethanes and textiles treated therewith (1978-01-10),

Title: The Innovative Contributions of Robert Violland

Introduction

Robert Violland is a notable inventor based in Lyons, France. He has made significant contributions to the field of polyorganosiloxanes, holding a total of 9 patents. His work focuses on the manufacturing processes and applications of multifunctional materials that have a wide range of industrial uses.

Latest Patents

Violland's latest patents include a groundbreaking process for the manufacture of multifunctional polyorganosiloxanes (POSs) through dehydrocondensation and hydrosilylation. This invention addresses the industrial-scale production of these materials, utilizing a (semi) continuous method. The process involves feeding a dehydrogenocondensation reactor with polyorganosiloxanes containing SiH, an ROR alcohol, and platinum. The gas produced is continuously evacuated and recycled, leading to the final product of polyorganosiloxanes with Si-alkyl and SiOR functionalities. Another significant patent involves aqueous emulsions of organopolysiloxane compositions, which are designed for coating flexible substrates to enhance water-repellency and nonadherency.

Career Highlights

Throughout his career, Robert Violland has worked with prominent companies such as Rhone-Poulenc Industries and Rhone-Poulenc Chimie. His experience in these organizations has allowed him to develop and refine his innovative processes, contributing to advancements in the field of materials science.

Collaborations

Violland has collaborated with notable colleagues, including Alain Lagasse and Jean Neel. These partnerships have fostered a collaborative environment that has led to the development of innovative solutions in his area of expertise.

Conclusion

Robert Violland's contributions to the field of polyorganosiloxanes demonstrate his commitment to innovation and excellence. His patents and career achievements reflect a deep understanding of materials science and a dedication to advancing industrial processes.

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