High Molecular Derivatives of Vitamin A.

Various derivatives of vitamin A, especially esters and ethers , have been studied by many investigators. However, its macromolecular derivatives have scarcely been reported. An attempt was made by the authors to synthesize the macromo lecular derivatives of vitamin A by preparation of the polymerizable derivatives , followed by their polymerization . Thus vitamin A acrylate, methacrylate, crotonate, and undecylenate and their polymers were synthesized and their properties were studied.