Sk Innovation Co., Ltd.

Won Yeob Kim

Myoung Lae Kim

Hyuk Joo Kim

Ki Yup Kim

Sung Ho Son

Yong Gyun Cho

Won Seok Jang

Jun Tae Choi

Hyo Shin Kwak

Seung Eon Lee

Yeong Min Jo

Jee Young Ahn

Min Joung Im

Provided are an optical film using a cellulose derivative, useful in an image display device, such as a liquid crystal display or the like, a retardation film and a polarization film using the optical film, and a liquid crystal display having excellent view angle characteristics by using these films, while the optical film uses a cellulose derivative resin in which some hydrogen atoms of hydroxy groups of cellulose are substituted with three or more kinds of substituents.

Optical film

Provided is a cellulose acetate film used for optical compensation and, in particular, a cellulose acetate film having a low retardation value Rin the film thickness direction.

Cellulose acetate film

Provided are a cellulose acylate film used for optical compensation and additives used therefor and, more particularly, is a cellulose acylate film with mechanical physical properties, in particular, very improved modulus affecting film durability.

Cellulose acylate film

Provided is a method of preparing a biphenyl-4-yl diphenyl phosphate composition for use as a flame retardant or a plasticizer for resin, including mixing phosphoryl chloride (POCl), 4-phenylphenol, and a catalyst, so that first dehydrochlorination occurs; and further adding phenol, so that second dehydrochlorination occurs.

Method of preparing biphenyl-4-yl diphenyl phosphate composition

Growing community of inventors

Daejeon, South Korea

Won Yeob Kim