PURPOSE: Titled liquid composition of low vicosity suitable as a raw material for a dye, ink, etc., which is composed of a mixture of a plurality of isoxazolidine derivatives obtained by the reaction of an oxime compound with an excess of a polyacrylate.

CONSTITUTION: (a) An oxime compound of formulaI(wherein R1 and R2 are H, alkyl, aryl or aralkyl, where these groups can have a hydroxyl group, halogen, nitrile, ether bond or ester bond) such as formaldoxime or acetoaldoxime, is reacted with a polyacrylate such as ethylene glycol diacrylate or propylene glycol diacrylate, having at least two groups of formula II (wherein R is H or CH3) in one molecule, in a proportion of more than 1.15mol of said polyacrylate to one equivalent of =NOH group in said oxime compound, to obtain titled oligomer composition.