公开(公告)号：US09649791B2

公开(公告)日：2017-05-16

申请号：US14251789

申请日：2014-04-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung Woo Hong ,  Woo-Jin Bae ,  Chan Jae Ahn ,  Won Suk Chang ,  A ra Jo ,  Sung Won Choi

IPC: B29C41/46 ,  C08G73/14 ,  B29D11/00 ,  B29C41/00 ,  C08L79/08 ,  B29C39/00 ,  C09D179/08 ,  C08G73/10 ,  B29K79/00

CPC classification number: B29C41/46 ,  B29C39/003 ,  B29C41/003 ,  B29D11/00788 ,  B29K2079/08 ,  C08G73/1039 ,  C08G73/1042 ,  C08G73/1067 ,  C08G73/14 ,  C08L79/08 ,  C09D179/08 ,  G02B1/041 ,  C08L33/24

Abstract: A method of preparing an optical film, preparing a coating composition including an amic acid-containing polymer represented by Chemical Formula 1 and at least one polymerization aid selected from an alkyl phosphite, an aryl phosphite, an alkyl phosphate, and an aryl phosphate; providing the coating composition on a substrate to form a coating layer; and applying heat to the coating layer to prepare a cured film: wherein, in Chemical Formula 1, are the same or different in each repeating unit, and are each independently at least one selected from an aromatic organic group, an aliphatic organic group, and an alicyclic organic group, and 0≦x≦1.