The light-sensitive moieties which ar'e'attached to the light-sensitivepolymers of this invention can be represented by the following structural formula wherein R is an oxygen atom, a sulfur atom, or a nitrogen atom containing an alkyl group having 1 to 12 carbon atoms; 1 R R R and R are hydrogen, lower alkyl, i.e., methyl; substituted lower alkyl, i.e., propylene chloride; cycloalkyl, i.e., cyclo