Moh C Chang

Title: The Innovations of Moh C Chang

Introduction

Moh C Chang is a notable inventor based in Feeding Hills, Massachusetts, known for his contributions to the field of polymer chemistry. He holds two patents that focus on stabilizer systems designed to prevent yellowing in styrenic polymers. His work has significant implications for the durability and longevity of various plastic materials.

Latest Patents

Chang's latest patents include a stabilizer system for non-yellowing polymer compositions. This system consists of a benzotriazole, specifically 2-(2'-hydroxy-3',5'-di-tert-amylphenyl)benzotriazole, and a hydroxybenzocyanurate, such as tris-(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate. Additionally, it incorporates a hindered amine light stabilizer, which can be either bis (2,2,6,6,-tetramethyl-4-piperidinyl) sebacate or bis-(1,2,2,6,6-pentamethyl-4-piperidinyl) ester of (3,5-di-tert-butyl-4-hydroxybenzyl)-butyl malonate. The stabilizer system may also include a dialkyl thiodipropionate and a zinc dialkyldithiocarbamate.

Another patent by Chang focuses on a similar stabilizer system for non-yellowing polymer compositions. This system includes a condensation product of a N,N'-(2,2,6,6-tetramethylpiperidyl)-alkylenediamine and a 6-amino-2,4-dichloro-1,3,5-s-triazine. The specific example provided is the condensation product of N,N'-(2,2,6,6-tetramethylpiperidyl)hexamethylenediamine and 6-morpholino-2,4-dichloro-1,3,5-s-triazine. Similar to his other patent, this system may also include a dialkyl thiodipropionate and a zinc dialkyldithiocarbamate.

Career Highlights

Throughout his career, Moh C Chang has worked with prominent companies in the chemical industry, including Monsanto Company and Bayer Antwerpen S.a./n.v. His experience in these organizations