Unsaturated polyester resins

摘要

An unsaturated polyester having recurring units of the formula <IMAGE> +tr <IMAGE> wherein A is an alcoholic moiety, Q is a moiety of other saturated dicarboxylate acids and B is a moiety of an unsaturated dicarboxylic acid, n is 1 to 4, the sum l + m + g is 2 to 20 and l may be 0 or a whole number, said polyester generally having between 1 and 80 mole percent of a chlorinated phenylene acetic acid moiety whose formula is <IMAGE> a solution of said such unsaturated polyester, particularly a solution of the same in a copolymerizable monomer, formed objects thereof and a process for the preparation of such unsaturated polyester.