Hung Chang

Title: Innovations by Inventor Hung Chang

Introduction

Hung Chang is a notable inventor based in Taipei, Taiwan. He has made significant contributions to the field of dye chemistry, particularly in the development of innovative compounds for textile applications. With a total of 2 patents, his work has garnered attention for its practical applications in the industry.

Latest Patents

Hung Chang's latest patents include the development of 2-amino-5-nitrothiazole derived monoazo disperse dyes. These compounds are designed to dye polyester and cellulose acetate fibers with excellent build-up, exhaustion, and sublimation fastness. The specific formula for these compounds includes variations where R1 can be H or an alkyl group of 1-4 carbons, R2 can be an alkyl group of 1-4 carbons or an allyl group, and R3 can be H, halogen, or an alkyl group of 1-4 carbons. Additionally, he has developed disazo acid dyestuffs for polyamide fibers that are applicable in neutral solutions. The general formula for these dyestuffs allows for various substitutions, making them versatile for different applications.

Career Highlights

Hung Chang is currently employed at Allied Industrial Corporation, a company known for its focus on industrial chemicals and dyes. His work at the company has allowed him to explore and innovate in the field of dye chemistry, leading to the patents he holds today.

Collaborations

Hung has collaborated with notable colleagues such as Hsien-Chyang Tsien and Kuan-Po Chu. Their combined expertise has contributed to the advancements in dye technology and the successful development of new compounds.

Conclusion

Hung Chang's contributions to the field of dye chemistry through his innovative patents demonstrate his commitment to advancing textile applications. His work continues to influence the industry and showcases the importance of innovation in creating effective solutions.