| 摘要 |
Preparation of water soluble organotin catalyst with good water solubility and storage stability comprises contacting aqueou solutions of organic tin compounds and of polyelectrolytes and/or chemically modified biopolymers. Preparation of water soluble organotin catalyst comprises contacting aqueous solutions of organic tin compounds of formula with aqueous solutions of polyelectrolytes of formula (II) and/or (III): R4SnX4-n (I) -(-CHY-CHA)l-(B)m-CH2-(-CH(COOZ)-CH(COOZ)-)k- (II) -(-CHY-CHA)l-(B)m-CH2-(-Bio-)k- (III) R = 1-4C alkyl; n = 1 or 2; X = anionic group, O, OH, F, Cl, Br; R<1> = alkyl, aryl or aralkyl; Y = H or CH3; A = COOZ, SO3Z, OSO3Z or PO3Z2; Z = H, alkyl or cationic group; Bio = biopolymer residue; B = ethylenically unsaturated monomer residue; m = 0; l and k = 0 - 200 l + k = 20. |
