摘要:
Poly(alkylene glycol) derivatives of the formula :
PAG [ O - V - Hg ⊖ x ⊕ ] n
or
PAG [ O - V₁ - S - R₁ ] n
wherein
PAG is a poly(alkylene glycol), x is a counter ion, V, V₁ is a non polymeric organic group, n is 1 or 2, and R₁ is selected from the group of -SO₃ ⊕ ; -S-SO₃ ⊕ ; -SO₂CH₃; thiopyridyl; nitrosulfenyl; otherwise substituted sulfenyl; -SO-(CH₂) m -CH₃ with m = 0, 1, ...; -SO m -CH₂-CH=CH₂ with m = 1, 2; -SO₂-R where R is alkyl or aryl.