| 摘要 |
An aqueous solution comprising acrylic acid and the conjugate base thereof in a total amount of at least 10% by weight, based on the weight of the aqueous solution, and propionic acid and the conjugate base thereof, formic acid and the conjugate base thereof, acetic acid and the conjugate base thereof, benzoic acid and the conjugate base thereof, maleic anhydride, maleic acid and the conjugate bases thereof, phthalic anhydride, phthalic acid and the conjugate bases thereof, acrolein, benzaldehyde, 2-furaldehyde, and at least 20 mol % of at least one alkali metal cation;
process for preparing this solution;and the use of this solution for preparation of polymer by free-radical polymerization. |
| 主权项 |
1. An aqueous solution comprising acrylic acid and the conjugate base thereof in a total amount, calculated as acrylic acid, of at least 10% by weight, based on the weight of the aqueous solution, and, based on the total amount of acrylic acid and the conjugate base thereof present in the aqueous solution, calculated as acrylic acid,
≧50 ppm by weight in total of propionic acid and the conjugate base thereof, calculated as propionic acid, ≧200 ppm by in total of formic acid and the conjugate base thereof, calculated as weight formic acid, ≧3000 ppm by in total of acetic acid and the conjugate base thereof, calculated as weight acetic acid, ≦10 ppm by weight in total of benzoic acid and the conjugate base thereof, calculated as benzoic acid, ≦10 ppm by weight in total of maleic anhydride, maleic acid and the conjugate bases thereof, calculated as maleic acid, ≦10 ppm by weight in total of phthalic anhydride, phthalic acid and the conjugate bases thereof, calculated as phthalic acid, ≦50 ppm by weight of acrolein, ≦50 ppm by weight of benzaldehyde, ≦50 ppm by weight of 2-furaldehyde, and at least 20 mol % of at least one alkali metal cation. |
