2-Propenoic acid, 2-methyl-, methyl ester, polymer with bis(2-chloroethyl) ethenylphosphonate and 1,1-dichloroethene 68958-28-1 Methyl 2-methyl-2-propenoate, 1,1-dichloroethene, bis(2-chloroethyl) ethenylphosphonate polymer