Patent ID: 7985778

Claim:
A method for decomposing and reclaiming synthetic resin having ester bond in the composition structure thereof, comprising the steps of hydrolysis treatment and separation collection treatment, wherein said hydrolysis treatment is a treatment in which an article to be treated containing a synthetic resin to be decomposed and reclaimed is exposed to a water vapor atmosphere under a saturated water vapor pressure at a treatment temperature under the condition of treatment temperature of at or below the melting point of the synthetic resin, and the synthetic resin in said article to be treated is hydrolyzed by the saturated water vapor generated at the treatment temperature, thus a decomposition product before polymerizing to the synthetic resin containing ester bond in the composition structure thereof is generated, and then after the reaction treatment, cooling the decomposition product while controlling the temperature and pressure of the water vapor to follow a saturated water vapor pressure curve, and wherein said separation collection treatment is a treatment in which the decomposition product generated by said hydrolysis treatment is separated into gas or liquid component and solid component to be collected individually.