Abstract: Provided is a cellulose acetate film used for optical compensation and, in particular, a cellulose acetate film having a low retardation value Rth in the film thickness direction.
Type:
Application
Filed:
August 29, 2011
Publication date:
February 26, 2015
Applicant:
SK INNOVATION CO., LTD.
Inventors:
Myoung Lae Kim, Jee Young Ahn, Hyuk Jun Kim, Ki Yup Kim, Sung Ho Son, Yong Gyun Cho, Won Yeob Kim, Jun Tae Choi
Abstract: The present invention relates to a cellulose acetate film used for optical compensation and a retardation enhancer used therein, and relates to a cellulose acetate film which has a high retardation value in the thickness direction (Rth).
Type:
Application
Filed:
June 20, 2012
Publication date:
May 1, 2014
Applicant:
SK INNOVATION CO., LTD.
Inventors:
Won Yeob Kim, Min Joung Im, Seung Eon Lee, Myoung Lae Kim, Yong Gyun Cho, Sang Yeup Lee, Ki Yup Kim
Abstract: The present invention relates to the use of an aqueous sodium hydroxide/thiourea solution, specifically to the use of an aqueous sodium hydroxide/thiourea solution for pilot-scale production of cellulose products, wherein sodium hydroxide constitutes 8.1%-12.0% of the total weight of the aqueous solution, thiourea constitutes 3.0%-6.0% of the total weight of the aqueous solution, and said cellulose products include regenerated cellulose filaments, films, nonwovens, as well as composite fibers and/or functional materials of protein/cellulose, chitin/cellulose, Konjac Glucomannan/cellulose, nano-crystal particle/cellulose, etc.
Type:
Application
Filed:
April 21, 2006
Publication date:
November 20, 2008
Applicants:
JIANGSU LONG-MA GREEN FIBERS CO., LTD., WUHAN UNIVERSITY
Inventors:
Lina Zhang, Dong Ruan, Jinping Zhou, Ang Lv, Chuntao LI
Abstract: Aqueous dispersions of carboxylated cellulose esters are disclosed having a low organic solvent content. These dispersions can be prepared using a volatile hydrophilic organic solvent and a coupling organic solvent having a lower volatility, the volatile hydrophilic solvent being substantially stripped off during preparation to obtain a dispersion useful in a variety of coating compositions, providing satisfactory performance in metallic flake control, flow and leveling properties, and defect reduction.
Type:
Grant
Filed:
March 11, 2004
Date of Patent:
May 30, 2006
Assignee:
Eastman Chemical Company
Inventors:
Kevin Wayne McCreight, Dean Charles Webster, Lisa Kay Kemp