| 摘要 |
A cellulose acylate which is a polymer obtained by substituting cellulose with acyl groups in 2-, 3-, 6-positions. The total degree of acyl substitution in the 2-and 3-positions is regulated to from 1.70 to 1.90. The degree of 6-position acyl substitution is regulated to 0.88 or higher.
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