Lubricant oil composition for compression refrigerator
First Claim
1. A composition, comprising:
- (i) a refrigerant consisting of difluoromethane R32; and
(ii) a lubricating composition consisting ofa base oil consisting of at least one selected from the group consisting ofa polyvinyl ether,a copolymer of a poly(oxy)alkylene glycol and a polyvinyl ether, anda copolymer of a poly(oxy)alkylene glycol monoether and a polyvinyl ether,wherein each base oil has a hydroxyl value of not more than 15 mgKOH/g,optionally from 0.01 to 5% by mass of an antioxidant, based on the total amount of the lubricating oil composition,optionally from 0.005 to 10% by mass of an acid scavenger, based on the total amount of the lubricating oil composition, andoptionally at least one additive selected from the group consisting of an extreme pressure agent, an oiliness agent, a metal deactivator, and a defoaming agent.
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Accused Products
Abstract
The present invention is able to provide a lubricating oil composition for compression refrigerating machine having excellent thermal/chemical stability even when used for a compression refrigerating machine using a saturated fluorinated hydrocarbon refrigerant having a low carbon number and a low global warming potential, by using a refrigerant containing a saturated fluorinated hydrocarbon having from 1 to 3 carbon atoms, which uses, as a base oil, an oxygen-containing organic compound composed of at least one member selected from a polyoxyalkylene glycol, a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol and a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol monoether and a polyvinyl ether, and a polyol ester, each having a hydroxyl value of not more than 15 mgKOH/g.
9 Citations
19 Claims
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1. A composition, comprising:
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(i) a refrigerant consisting of difluoromethane R32; and (ii) a lubricating composition consisting of a base oil consisting of at least one selected from the group consisting of a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol and a polyvinyl ether, and a copolymer of a poly(oxy)alkylene glycol monoether and a polyvinyl ether, wherein each base oil has a hydroxyl value of not more than 15 mgKOH/g, optionally from 0.01 to 5% by mass of an antioxidant, based on the total amount of the lubricating oil composition, optionally from 0.005 to 10% by mass of an acid scavenger, based on the total amount of the lubricating oil composition, and optionally at least one additive selected from the group consisting of an extreme pressure agent, an oiliness agent, a metal deactivator, and a defoaming agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification