This inventor holds 2 USPTO granted patents. Top assignee: Ciba-Geigy Corporation. Active years: 1987-1990.
Company Filing History:
Years Active: 1987-1990
Title: Roland Ronco: Innovator in Dye Chemistry
Introduction
Roland Ronco is a notable inventor based in Pfeffingen, Switzerland. He has made significant contributions to the field of dye chemistry, holding 2 patents that showcase his innovative approaches to dye preparation.
Latest Patents
One of his latest patents is focused on the "Preparation of cationic azo or hydrazone dyes." This invention describes a continuous process for creating these dyes from heterocyclic diazo components and coupling components. The process involves diazotising the diazo component in water and an acid, followed by coupling with the coupling component and continuous alkylation. This method results in a two-phase system that separates the dye from the aqueous solution.
Another significant patent is for the "Process for the preparation of 2,4,6-tris(aminophenylamino)triazines." This process involves condensing s-trichlorotriazine with partially protected phenylenediamine and removing the protective groups. The condensation is carried out in an anhydrous or water-containing aliphatic alcohol, with the presence of an acid acceptor. The resulting 2,4,6-tris(aminophenylamino)triazines are crucial intermediates in dyestuff chemistry, used for synthesizing various dyes and pigments.
Career Highlights
Roland Ronco has been associated with Ciba-Geigy Corporation, a prominent player in the chemical industry. His work has significantly impacted the development of dyes used in textiles, leather, and paper.
Collaborations
Throughout his career, Ronco has collaborated with notable colleagues such as Willy Stingelin and Ernst Hanggi. These collaborations have further enriched his contributions to the field of dye chemistry.
Conclusion
Roland Ronco's innovative work in dye chemistry, particularly through his patents, has established him as a key figure in the industry. His contributions continue to influence the development of dyes and pigments used in various applications.