Abstract
4-Methoxy-4'-(3-N-maleimidopropoxy)benzaldazine has been prepared and used for the synthesis of hyperbranched polymers by,criss-cross'-cycloaddition. In this type of reaction two unsaturated groups, such as the maleic imide groups, are added to the azine function. Hence, the azine behaves as a difunctional system, and therefore 4-Methoxy-4'-(3-N-maleimidopropoxy)benz-aldazine is an AB 2 monomer, with the maleic imide group being the A-function, and the azine group representing the B 2 part. The nature of this cycloaddition reaction ensures the coupled reaction of the two B-functions of each monomer unit. Consequently, the resulting polymer consists exclusively of branched and terminal repeating units and therefore has a degree of branching of 100%.
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