▎ 摘　　要

NOVELTY - Synthetic refrigerating machine oil comprises 10-50 wt.% naphthenic base oil, 48-88 wt.% alkylbenzene oil, 1.5-2.5 wt.% additive and balance is defoamer. USE - Synthetic refrigerating machine oil. ADVANTAGE - The synthetic refrigerating machine oil has hydrolysis stability and excellent solubility, good compatibility with mineral oil and ester oil, high efficiency and energy saving, in simple manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a synthetic refrigerating machine oil, which involves: (A) adding 99 wt.% alkylbenzene base oil synthesized by alkylation of high-purity alpha olefins and aromatic hydrocarbons and 1 wt.% additives to the pulse pneumatic blending system, initial mixing at room temperature, pulse reconciling for 10-20 minutes to obtain alkylbenzene oil; (B) weighing 10-50 wt.% naphthenic base oil, 48-88 wt.% alkylbenzene oil, 1.5-2.5 wt.% additives, and the balance as defoamer; (C) adding the naphthenic base oil, alkylbenzene oil, additives and defoamer weighed to the blending kettle in sequence, initial mixing at room temperature, pulse blending treatment for 20-40 minutes; (D) taking a sample and test, passing high-purity nitrogen from the bottom of the reconciliation kettle and ventilate for 1-1.5 hours; and (E) taking samples for trace moisture detection, qualifying detection and filling into a high-clean packaging barrel.