| 主权项 |
1. A uniaxially or biaxially stretched optical film comprising:
(a) a cellulose ester polymer; and (b) an additive having the structure below:wherein
DISK represents a disk-like moiety having a fused ring structure; A is each independently —COO—, —OOC—, —CO—, —CONH—, —NHCO—, —O—, or —S—; Z is each independently an aryl, alkyl, ethoxylated alkyl, or ethoxylated aryl group having 1 to 30 carbon atoms; Y is each independently a halogen, alkyl-, alkoxy-, or alkanoyl-group having 1 to 20 carbon atoms; m=0, 1, 2, 3, or 4; and n=0, 1, 2, or 3,provided that when A is —COO—, Z is not an ethoxylated aryl group. |
