申请人:KAO CORPORATION
公开号:EP0501440A1
公开(公告)日:1992-09-02
This invention provides a refrigerator working fluid composition characterized by excellent compatibility, lubricating ability, thermal stability, and electrical insulation capacity, and comprising a refrigerating machine oil and a hydrofluorocarbon compound, wherein the refrigerating machine oil comprises:
(A) 100 parts by weight of at least one ester compound selected from the group consisting of:
(1) ester compounds obtained from
(a) an aliphatic polyhydric alcohol having 1 to 6 primary hydroxyl groups,
(b) a straight or branched chain saturated aliphatic monocarboxylic acid having 2 to 9 carbon atoms or a derivative thereof, and
(c) a straight or branched chain saturated aliphatic dicarboxylic acid having 2 to 10 carbon atoms or a derivative thereof; and
(2) ester compounds obtained from
(a) an aliphatic polyhydric alcohol having 1 to 6 primary hydroxyl groups,
(d) a straight or branched chain saturated aliphatic monohydric alcohol having 1 to 10 carbon atoms, and
(e) a polycarboxylic acid having 2 to 10 carbon atoms or a derivative thereof; and
(B) at least one compound selected from the group consisting of 0.1 to 5.0 parts by weight of a triaryl phosphate, a triaryl phosphite, or a mixture thereof; 0.001 to 0.1 parts by weight of benzotriazole, a derivative thereof, or a mixture thereof; 0.05 to 2.0 parts by weight of an epoxy group-containing compound; and 0.001 to 2.0 parts by weight of a metal deactivator having a chelating function.
本发明提供了一种冰箱工作液组合物,其特点是具有优异的相容性、润滑性、热稳定性和电绝缘能力,由冷冻机油和氢氟碳化合物组成,其中冷冻机油包括:
(A) 至少 100 重量份的一种酯类化合物,该化合物选自由下列物质组成的组
(1) 从下列物质中获得的酯化合物
(a) 具有 1 至 6 个伯羟基的脂肪族多元醇、
(b) 具有 2 至 9 个碳原子的直链或支链饱和脂肪族一羧酸或其衍生物,和
(c) 具有 2 至 10 個碳原子的直鏈或支鏈飽和脂肪族二羧酸或其衍生物; 及
(2) 从以下物质中获得的酯化合物
(a) 具有 1 至 6 个伯羟基的脂肪族多元醇、
(d) 具有 1 至 10 個碳原子的直鏈或支鏈飽和脂肪族一元醇,及
(e) 具有 2 至 10 个碳原子的聚羧酸或其衍生物;及
(B) 至少一种选自以下组别的化合物:0.1 至 5.0 重量份的三芳基磷酸酯、三芳基亚磷酸酯或其混合物;0.001 至 0.1 重量份的苯并三唑、其衍生物或其混合物;0.05 至 2.0 重量份的含环氧基化合物;以及 0.001 至 2.0 重量份的具有螯合功能的金属失活剂。