| 摘要 |
A charge imbalanced polymer is made by: reacting 1 mole of an anhydride compound having the formula <IMAGE> where R is C1-C4 alkyl, with less than 1 mole of a mixture of about 0.1-0.8 mole of a compound having the formula <IMAGE> (A) where n is 1-6, R1 and R2 are independently C1-C6 alkyl, and R3 is H or lower alkyl, and about 0.50-0.4 mole of a compound having the formula <IMAGE> (B) where R4 is C12-C24 alkyl, and where (A) is 2-6 times (B), isolating the product, and hydrolyzing any residual anhydride compound in water to the corresponding diacid compound. |
