Company Filing History:
Years Active: 1978-1981
Title: Walter Lang: Innovator in Textile Dyeing Solutions
Introduction
Walter Lang is a notable inventor based in Pfeffingen, Switzerland. He has made significant contributions to the field of textile dyeing, particularly through his innovative processes and formulations. With a total of 3 patents, Lang has developed methods that enhance the efficiency and effectiveness of dyeing synthetic materials.
Latest Patents
One of Lang's latest patents is a process for producing solutions of salts of water-soluble carboxylic acids of cationic dyes or optical brighteners. This process involves reacting the halide of a cationic dye or brightener in an aqueous or anhydrous medium with at least one water-soluble carboxylic acid, in the presence of an epoxide compound with a minimum of 13 carbon atoms. The resulting solutions are miscible with water in any proportion and are used for preparing dye liquors and printing pastes for dyeing, optical brightening, and printing of synthetic textile materials. Another significant patent relates to stable, concentrated dispersions of basic dyestuffs, which are dispersions of a water-soluble basic dyestuff in an organic solvent that is at least partially miscible with water.
Career Highlights
Walter Lang has worked with prominent companies in the chemical and textile industries, including Ciba-Geigy Corporation and Ciba-Geigy AG. His experience in these organizations has allowed him to refine his expertise in dyeing technologies and contribute to advancements in the field.
Collaborations
Throughout his career, Lang has collaborated with notable colleagues such as Peter Loew and Gert Hegar. These partnerships have fostered innovation and the sharing of ideas, further enhancing the development of new dyeing solutions.
Conclusion
Walter Lang's contributions to the field of textile dyeing through his innovative patents and collaborations have made a lasting impact. His work continues to influence the industry, paving the way for more efficient and effective dyeing processes.