TECHNOLOGY FOCUS - ELECTRONICS - Preferred Composition: The electromagnetic waves are ultraviolet rays.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The primary functional group is isocyanato group blocked by block-forming agent or isothiocyanate group blocked by block-forming agent. The isothiocyanate group blocked by block-forming agent and isocyanato group blocked by the block-forming agent are group of formula (IV) or (V).Xa',Xb'=O or S;andR24-R28=H or 1-20C monovalent organic group.    TECHNOLOGY FOCUS - POLYMERS - Preparation (Disclosed): The ester compound (VII) used as raw material is polymerized, to obtain high-molecular compound. Preferred Composition: The high-molecular compound further has repeating unit(s) chosen from repeating unit containing cyclic ether structure and repeating unit containing primary functional group, and repeating unit of formula (VI). The primary functional group is functional group produced by irradiating secondary functional group reactable with active hydrogen with electromagnetic waves or with action of heat. The repeating unit containing cyclic ether structure is repeating unit of formula (II), or repeating unit of formula (III).R3,R7,R13=H or methyl;R4-R6,R8-R12,R'=H or 1-20C monovalent organic group;Ra',Rb',Rd'=bivalent group;t,w,u=0 or 1;R14=organic group which is detachable by action of acid;andA2=-O- or -COO-. EXAMPLE - 2 g 1-(5-methoxy-2-nitro-4-(3-(2,2,6,6-tetramethyl-4-((trimethylsilyl)oxy)-3,5-dioxa-2,4,6-trisilaheptan-4-yl)propoxy)phenyl)ethyl 2-methylprop-2-enoate, 1.79 g styrene, 1.01 g (3-ethyloxetan-3-yl)methyl 2-methylprop-2-enoate, 2.06 g 1,4-cyclohexane dimethanol monoacrylate, 0.03 g 2,2'-azobis (2-methyl-propionitrile) and 8.82 g propylene-glycolmonomethyl-ether acetate were added, dissolved oxygen was purged, tightly plugged, and polymerized in 80 degrees C oil bath for 8 hours, to obtain viscous propylene-glycol-monomethyl-ether acetate solution in which high molecular compound was dissolved.