Louis R De Alvare

Title: Innovations of Louis R De Alvare

Introduction

Louis R De Alvare is a notable inventor based in Holland, MI (US). He has made significant contributions to the field of colorants, particularly for ballpoint pens and ribbon inks. With a total of 2 patents, his work has had a lasting impact on the ink manufacturing industry.

Latest Patents

His latest patents include "Azo colorants for ball point pen and ribbon inks" and "Colorants for ball-point pen and ribbon inks." The first patent describes the production of reddish-brown to yellow shade colorants derived from the glassy waste by-product of pararosaniline manufacture. This process involves slurrying the residue in mineral acid, diazotizing, and coupling, resulting in colorants that are useful in preparing inks. The second patent focuses on the preparation of substantially pure triarylmethane dyestuff salts, free of contamination by arylamines. This is achieved by isolating the carbinol base corresponding to the dyestuff and forming salts through a reaction with the appropriate acid. The resulting colorants are highly suitable for ball-point pen, printing, and ribbon inks.

Career Highlights

Louis R De Alvare has had a successful career at BASF Corporation, where he has been able to apply his innovative ideas in the development of new colorants. His work has contributed to advancements in ink technology, making him a valuable asset to the company.

Collaborations

Throughout his career, Louis has collaborated with notable coworkers such as Floyd G Spence and Robert J Allen. These collaborations have further enhanced his work and contributed to the success of his inventions.

Conclusion

Louis R De Alvare's contributions to the field of colorants have made a significant impact on the ink industry. His innovative patents and collaborations highlight his dedication to advancing technology in this area.