Company Filing History:
Years Active: 1978
Title: David Thomas Woodbridge: Innovator in Bleach Preparation
Introduction
David Thomas Woodbridge is a notable inventor based in Hitchin, GB. He has made significant contributions to the field of chemical processes, particularly in the preparation of bleaching agents. His innovative approach has led to the development of a unique method for producing diphthaloyl peroxide, a compound widely used in fabric washing and bleaching.
Latest Patents
Woodbridge holds a patent for the "Preparation of a bleach." This invention outlines a process for producing diphthaloyl peroxide by reacting particulate phthalic anhydride with aqueous hydrogen peroxide in a mobile slurry or paste. The method emphasizes the importance of using a minimum volume of hydrogen peroxide solution to achieve the desired slurry consistency, with a mole ratio of phthalic anhydride to hydrogen peroxide ranging from 4:3 to 1:3. The reaction is ideally conducted at temperatures between 25°C and 50°C. Diphthaloyl peroxide is particularly effective for washing and bleaching fabrics, especially when used in conjunction with inorganic persalts like sodium perborate at temperatures from 30°C to 60°C.
Career Highlights
Woodbridge is associated with Interox Chemicals Limited, where he has applied his expertise in chemical processes. His work has contributed to advancements in the production of bleaching agents, enhancing their effectiveness and efficiency in various applications.
Collaborations
Throughout his career, Woodbridge has collaborated with notable colleagues, including Robert Charles Cubbon and Peter John Russell. These partnerships have fostered innovation and development in the field of chemical manufacturing.
Conclusion
David Thomas Woodbridge's contributions to the preparation of bleaching agents exemplify the impact of innovative thinking in the chemical industry. His patent for diphthaloyl peroxide production showcases his commitment to enhancing fabric care solutions.