PURPOSE: To prepare the titled substance useful as various intermediates, tanning agent, curing agent, fungicide, crosslinking agent, immobilizing agent for enzyme, etc., with little production of by-products, easily, in high yield and purity, by the thermal decomposition of a cyclopentyl peroxide compound.
CONSTITUTION: Glutaraldehyde is prepared by the thermal decomposition of the compound of formulaI(R1 is H or 1W18C organic residue) or formula II (R2 and R3 are H, 1W18C organic residue or together form a ring) at 70W250°C. Since the reaction is exothermic, it is preferable to carry out the decomposition slowly under removal of heat. The raw material is decomposed as it is or after diluting with a solvent such as hydrocarbon, carboxylic acid, phosphoric acid, phosphonic acid, ketone, etc.
EFFECT: The degradation of the objective compound can be prevented because there is no contact of the compound with acid, alkali, metallic catalyst, etc. during the preparation process.
MATSUNO MITSUO
YUASA HITOSHI
