Novel polymers containing carbon–anchored organotin groups

Three polymers containing Bu 2 SnX (X=OAc or Cl) groups linked to the polymer through a C–Sn bond have been prepared by hydrostannation (via Bu 2 Sn HCl) of the following CH=CH 2 h‐containing polymers: (1) a polybutadiene containing approx. 70% of 1,2 CH=CH 2 units; (2) poly(allyl methacrylate); (3) poly(tetraethylene glycol monoallyl ether methacrylate). The first and third were tested for activity against a number of marine organisms and found to be inactive. Presumably this observed biological inactivity arises from the fact that R 3 Sn(H 2 O)   n +ions are not released into the aqueous medium.