| 摘要 |
<p>A polyester having a satisfactory color tone (a high value of L and a low value of b) and a reduced acetaldehyde content is obtained with a catalyst comprising a product of the reaction of (A) at least one of a titanium compound (1) represented by the following general formula (I) and a titanium compound (2) obtained by reacting the titanium compound (1) represented by the general formula (I) with an aromatic polycarboxylic acid represented by the following general formula (II) or an anhydride thereof with (B) a phosphorus compound (3) represented by the following general formula (III). (I) (II) (III) (R1, R2, R3, R4, and R5 each is C2-10 alkyl; k is 1 to 3; m is 2 to 4; and R6 is (un)substituted C6-20 aryl or C6-20 alkyl.)</p> |
