James Roger Hargreaves

Title: James Roger Hargreaves: Innovator in Corrosion Inhibition

Introduction

James Roger Hargreaves is a notable inventor based in Sale, GB. He has made significant contributions to the field of corrosion inhibition, holding a total of 2 patents. His work focuses on enhancing the durability and longevity of metals through innovative chemical solutions.

Latest Patents

Hargreaves' latest patents include advancements in corrosion inhibitors. One patent details the use of addition compounds of sulfur dioxide and Schiff bases derived from primary aliphatic or araliphatic amines and aromatic aldehydes. This invention is designed for sealing the surface of phosphated mild steel, significantly improving the corrosion resistance of the steel and the adhesion of paint coatings. The addition compounds can be easily prepared by passing a stream of SO.sub.2 through a solution of the Schiff base.

Another patent addresses the corrosion inhibition of water systems using phosphonic acids. This process involves adding a phosphonic acid with a specific general formula to corrosive water systems affecting metals. The phosphonic acid can have various alkyl or aryl groups, enhancing its effectiveness in preventing corrosion.

Career Highlights

Hargreaves has worked with Ciba-Geigy Corporation, a company known for its innovative chemical solutions. His role there has allowed him to develop and patent his groundbreaking work in corrosion inhibitors.

Collaborations

Throughout his career, Hargreaves has collaborated with notable colleagues, including John Burrows and Peter Miles. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

James Roger Hargreaves is a distinguished inventor whose work in corrosion inhibition has led to significant advancements in the field. His innovative patents reflect his commitment to improving metal durability and resistance to corrosion.