Patent ID: 7229957

Claim:
A process for producing a functional substance comprising a telechelic oligoolefin containing a reversible photopolymerization/dissociation group and represented by the following general formula (4): wherein R represents an alkyl group of from 1 to 3 carbon atoms, a phenyl group, a mixed group of methyl and ethyl or a mixed group of methyl and hydrogen; n represents an integer of from 2 to 100 and q is 0 or 1; R 21 represents R 22 —(C(O)O) g — or R 23 —, wherein R 22 represents an anthranyl group when q is 1 and a photolabile group selected from pyrimidyl, uracyl or thymidyl and capable of dimerization upon exposure to an active ray having a long wavelength of 300 nm or greater when q is 0, wherein R 23 represents hydrogen, a hydroxyl group, an alkyl group of from 1 to 8 carbon atoms or an alkenyl group of from 1 to 8 carbon atoms; said process comprising: reacting with anthronic acid chloride, or alternatively pyrimidine hydrochloride, uracil hydrochloride or thymine hydrochloride, an oligoolefin containing an —OH group(s) at a single end thereof or at both ends thereof and represented by the following general formula (2a): wherein R and n have the same meanings as defined herein above, R 1 represents R 2 —CH 2 — or R 3 —CH 2 — wherein R 2 represents —OH or and R 3 represents a hydrogen atom, an alkyl group of from 1 to 8 carbon atoms or an alkenyl group of from 1 to 8 carbon atoms.