Ink S Han

Title: Ink S Han: Innovator in Aromatic Polyamide Technology

Introduction

Ink S Han is a prominent inventor based in Gyungsangbuk, South Korea. He has made significant contributions to the field of aromatic polyamide technology, holding a total of 3 patents. His work focuses on developing advanced materials with enhanced properties for various applications.

Latest Patents

One of his latest patents is titled "Aromatic polyamide fiber free of crystal defect layers perpendicular to." This invention describes a fiber product comprising one or more fibers of aromatic polyamide polymer. The fibers have a microscopic structure of an extended molecular chain, free of crystal defect layers perpendicular to the fiber axis, with a high inherent viscosity of at least 3.0 [dl/g] and a high tensile strength of at least 15 g/d. The inherent viscosity is determined at 30 degrees Celsius using a concentration of 0.5 grams of the polymer in 100 ml of concentrated sulfuric acid.

Another notable patent is "Two-stage process for preparing aromatic polyamide film." This process involves dissolving an aromatic diamine and an aromatic diacid chloride in an amide polymerization solvent containing an inorganic salt. A partial polymerization is conducted at a low temperature to form an optically anisotropic liquid crystalline prepolymer dope. The prepolymer is then continuously extruded through a film die under a draw ratio or subjected to shear, and it is contacted with a second solvent that acts as a polymerization accelerating-precipitation solvent. This results in an aromatic polyamide film free of crystal defect layers perpendicular to the film axis, exhibiting high strength and a high degree of molecular orientation.

Career Highlights

Ink S Han is currently employed at Kolon Industries, Inc., where he continues to innovate and develop new materials. His expertise in aromatic polyamide technology has positioned him as a key figure in the industry.

Collaborations

Throughout his career, Ink S Han has collaborated with notable colleagues, including Ho Joon Park and Moo S Rhim. These partnerships have contributed to the advancement of research and development in the field of aromatic polyamides.

Conclusion

Ink S Han's contributions to aromatic polyamide technology through his patents and collaborations highlight his role as an influential inventor in the industry. His work continues to pave the way for advancements in material science.