John C Gaynor

Title: The Innovative Mind of John C. Gaynor: Advancements in Gypsum Crystal Production

Introduction

John C. Gaynor is a notable inventor based in Des Plaines, Illinois, recognized for his significant contributions to the field of gypsum crystal production. With a total of eight patents to his name, Gaynor has dedicated his career to developing efficient processes that enhance the quality and usability of gypsum crystals in various applications.

Latest Patents

Among John C. Gaynor's latest patents is a groundbreaking process for producing tabular acicular gypsum crystals. This innovative method allows for the economical production of these desirable crystals within a continuously stirred reactor. The process operates at atmospheric pressure, maintaining about 20% to 25% by weight solids of gypsum crystals in water, with temperatures ranging from 50°C to 60°C. Continuous mild agitation promotes optimal production conditions. Furthermore, calcium sulfate hemihydrate is introduced into the reaction zone, carefully maintaining a low level of supersaturation to ensure the desired quality of gypsum crystals.

Another notable patent involves the tabular acicular gypsum and its method of filling paper. In this process, Gypsum crystals are produced by hydrating calcium sulfate dihydrate particles in a seeded continuously stirred reactor. This technique results in crystals exhibiting an aspect ratio of about 100:10:1, with lengths ranging from 100 to 450 micrometers. The resulting tabular crystal slurry can be directly incorporated into paper pulp during web formation, enhancing filler retention in the final product.

Career Highlights

John C. Gaynor has dedicated his career to innovation in the gypsum industry, working with the United States Gypsum Company. His pioneering work in developing methods for producing high-quality gypsum crystals has made a lasting impact on the materials used in construction and manufacturing.

Collaborations

Throughout his career, Gaynor has collaborated with esteemed colleagues like Jay W. Palmer and Norman E. Johnstone. These partnerships have fostered a rich environment for innovation, leading to advancements that benefit the industry as a whole.

Conclusion

John C. Gaynor's contributions to the field of gypsum production exemplify his innovative spirit and commitment to improving industrial processes. His patents play a crucial role in advancing the quality and efficiency of gypsum crystals, ensuring that his work continues to have a lasting impact on various applications within the industry.