| abstract |
It is possible to effectively suppress the fouling of the porous filtration membrane used for the water purification treatment membrane and the like and furthermore to have a chemical resistance against a chemical agent such as alkali which is used when fouling occurs and to maintain a sufficient effect even after chemical cleaning A fouling inhibitor, a filtration membrane having the inhibitor, and a process for producing the same. The inhibitor of the present invention comprises (A) an MPC structural unit (a1), and (a2) a BMA structural unit, wherein the molar ratio (a1) / (a2) (B) a PVA having a degree of saponification of 72 to 93 mol% and a degree of polymerization of 300 to 1000, and (A) a component having a weight average molecular weight of 100 to 300,000, B) component (A) / (B) is 25/75 to 75/25. |