Lubricant composition for refrigerating machines, and refrigerating machine

Patent metadata

Field	Value
Publication number	US-10465141-B2
Application number	US-201515525387-A
Country	US
Kind code	B2
Filing date	Oct 23, 2015
Priority date	Nov 19, 2014
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

The lubricating oil composition for a refrigerator of the present invention is a lubricating oil composition for a refrigerator that is used in combination with a refrigerant containing at least one fluorine-containing organic compound selected from compounds represented by the following molecular formula (A):

C p F r R s   (A)

wherein R represents Cl, Br, I, or H; p represents an integer of from 2 to 6; r represents an integer of from 1 to 12; and s represents an integer of from 0 to 11, provided that the molecule contains at least one carbon-carbon unsaturated bond, and the lubricating oil composition for a refrigerator contains a base oil and a cyclic organic compound having a cyclic hydrocarbon structure and having one or more non-conjugated double bond in a cyclic structure or a side chain thereof.

First claim

The invention claimed is:

1. A lubricating oil composition for a refrigerator, comprising:
a base oil; and
β-pinene;
wherein the lubricating oil composition is used in combination with a refrigerant consisting of at least one selected from the group consisting of 1,3,3,3-tetrafluoropropene, 2,3,3,3-tetrafluoropropene, and 1,2,3,3-tetrafluoropropene.

2. The lubricating oil composition according to claim 1 , wherein the β-pinene is present in an amount of 0.1 to 10 mass % based on a total amount of the lubricating oil composition.

3. The lubricating oil composition according to claim 1 , further comprising at least one selected from the group consisting of cyclohexene, 1-methylcyclohexene, vinylcyclohexane, 4-vinylcyclohexene, limonene, α-pinene, and γ-terpinene.

4. The lubricating oil composition according to claim 1 , further comprising at least one selected from the group consisting of limonene, α-pinene, and γ-terpinene.

5. The lubricating oil composition according to claim 1 , wherein the base oil comprises at least one selected from the group consisting of a polyoxyalkylene glycol compound, a polyvinyl ether compound, a copolymer having a structure of a poly(oxy)alkylene glycol or a monoether thereof and a polyvinyl ether, and a polyol ester compound.

6. The lubricating oil composition according to claim 1 , further comprising:
at least one additive selected from the group consisting of an antioxidant, an acid scavenger, an extreme pressure agent, and an anti-foaming agent.

7. A method for producing a lubricating oil composition, the method comprising:
blending β-pinene with a base oil,
wherein the lubricating oil composition is used in combination with a refrigerant consisting of at least one selected from the group consisting of 1,3,3,3-tetrafluoropropene, 2,3,3,3-tetrafluoropropene, and 1,2,3,3-tetrafluoropropene.

8. The lubricating oil composition according to claim 1 , wherein the refrigerant consists of 1,2,3,3-tetrafluoropropene.

9. The lubricating oil composition according to claim 1 , wherein the base oil comprises at least one selected from the group consisting of a polyoxyalkylene glycol compound, a polyvinyl ether compound, and a copolymer having a structure of a poly(oxy)alkylene glycol or a monoether thereof and a polyvinyl ether.

10. A refrigerator, comprising:
a refrigerant consisting of at least one selected from the group consisting of 1,3,3,3-tetrafluoropropene, 2,3,3,3-tetrafluoropropene, and 1,2,3,3-tetrafluoropropene; and
a lubricating oil composition comprising a base oil and β-pinene.

11. A car air conditioner, a gas heat pump, an air conditioner, a fridge, an automatic vending machine, a showcase, a hot water supply machine, or a floor heater comprising the lubricating oil composition of claim 1 .

Assignees

• Idemitsu Kosan Co

Inventors

• Matsumoto Tomoya

Classifications

• C10N2040/30

  Refrigerators lubricants {or compressors lubricants} · CPC title

• C10N2030/10

  Inhibition of oxidation, e.g. anti-oxidants · CPC title

• C10N2030/08

  Resistance to extreme temperature · CPC title

• C10N2020/101

  Containing Hydrofluorocarbons · CPC title

• C10N2020/02

  Viscosity; Viscosity index · CPC title