[C:1]([OH:8])(=[O:7])/[CH:2]=[CH:3]/[C:4]([OH:6])=[O:5].[C:9]([OH:18])(=[O:17])[CH2:10][CH2:11][CH2:12][CH2:13][C:14]([OH:16])=[O:15].COC(=O)CCCCC(O)=O.C[SiH](C)Cl.C[Si](/C(/C([O-])=O)=C(/[Si](Cl)(C)C)\C([O-])=O)(C)Cl.C[Si](OC(=O)CCCCC(O[Si](C)(C)Cl)=O)(C)Cl.COC(=O)C(C)([SiH2]Cl)C(C)CCC([O-])=O>>[C:1]([O-:8])(=[O:7])/[CH:2]=[CH:3]/[C:4]([O-:6])=[O:5].[C:9]([O-:18])(=[O:17])[CH2:10][CH2:11][CH2:12][CH2:13][C:14]([O-:16])=[O:15]Second, the end-capped macromer is synthesized. To prepare the macromer, fumaric acid, adipic acid, and adipic acid monomethyl ester are added to dimethylchlorosilane. Next, polycondensation of bis(dimethylchlorosilyl)-fumarate, bis(dimethylchlorosilyl)-adipate, and dimethylchlorosilyladipate monomethyl ester is carried out to obtain the fumarate-adipate macromer capped with adipic acid monomethyl ester at one end and with reactive chlorosilane at the other end. After completion of the polycondensation reaction, the reactive chlorosilane end of the macromer chains is quenched with excess methanol to obtain a macromer capped with adipic acid monomethyl ester and methoxysilane.
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