Supparat Piachan

Title: Innovations of Supparat Piachan in Synthetic Polyisoprene Latex Condoms

Introduction

Supparat Piachan is a notable inventor based in Chonburi, Thailand. He has made significant contributions to the field of materials science, particularly in the development of synthetic polyisoprene latex condoms. His innovative work focuses on reducing nitrosamine levels in these products, which is crucial for enhancing safety and performance.

Latest Patents

Supparat Piachan holds a patent for "Synthetic polyisoprene latex condoms with reduced nitrosamine." This invention involves a synthetic polyisoprene latex emulsion that includes both pre-vulcanization and post-vulcanization compositions. The pre-vulcanization composition utilizes insoluble amorphous sulfur extracted with a zinc dithiocarbamate catalyst at 20° C. This process forms a sulfur chain that is transported to the interior of the synthetic polyisoprene particles, creating a physical attachment of sulfur to active sites. The degree of pre-vulcanization is verified through a swelling index test, which measures the expansion of a cast and dried film of latex in toluene over 20 minutes. The latex emulsion is then vulcanized at temperatures ranging from 90° C. to 120° C. for 3 to 5 minutes. The post-vulcanization composition incorporates accelerators that crosslink the synthetic polyisoprene particles, ensuring uniform curing in both inter-particle and intra-particle regions. This results in high cross-link density and a uniform distribution of double bonds, with zinc segregation at the boundaries of the original particles. The final product exhibits high tensile strength, tensile modulus, elongation, and excellent tear strength, while releasing below 10 ppb of nitrosamines.

Career Highlights

Supparat Piachan is associated with Thai Nippon Rubber Industry Public Company Limited, where he applies his expertise in polymer science to develop innovative products. His work has not only advanced the field of condom manufacturing but has also contributed to public health by reducing harmful substances in consumer products.

Collaborations

Throughout his career, Supparat has collaborated with notable colleagues such as Pathompong Chupayak and Theeraphol Piachan. These collaborations have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Supparat Piachan's contributions