Refrigerating machine oil, and composition for refrigerating machine
AssigneeIdemitsu Kosan Co., Ltd.
InventorsSo Nakajima, Tomoya Matsumoto
Life of this patent
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Abstract
The present invention relates to a refrigerator oil containing a polyvinyl ether-based compound (A) containing a structural unit (a1) having a methoxy group in a side chain thereof in an amount of 30 mol % or more and 100 mol % or less on a basis of 100 mol % of the whole amount of structural units excluding a terminal structural unit in a molecular structure thereof, a refrigerator oil composition containing the refrigerator oil, and a production method of the refrigerator oil.
Claims13
A refrigerator oil, comprising:
- (A) a polyvinyl ether-based compound (A) comprising:
- a structural unit (a1) represented by formula (1),
- wherein:
- R1, R2, and R3 each independently represent a hydrogen atom or a hydrocarbon group having 1 or more and 8 or less carbon atoms;
- R4 represents a divalent hydrocarbon group having 3 or more and 10 or less carbon atoms;
- and
- m represents a number of 0 or more and 10 or less;
- and
- a structural unit (a2) represented by formula (2)
- wherein:
- R5, R6, and R7 each independently represent a hydrogen atom or a hydrocarbon group having 1 or more and 8 or less carbon atoms;
- R8 represents a divalent hydrocarbon group having 2 or more and 10 or less carbon atoms;
- n represents a number of 0 or more and 10 or less;
- and
- R9 represents a hydrocarbon group having 2 or more and 10 or less carbon atoms,
- wherein a molar content ratio [(a1)/(a2)] is from 30/70 to 95/5 on a basis of 100 mol % of the whole amount of structural units excluding a terminal structural unit in a molecular structure thereof.
A method of producing a refrigerator oil composition, the method comprising contacting a polyvinyl ether-based compound (A with a refrigerant to obtain a refrigerator oil composition:
- wherein the polyvinyl ether-based compound comprises a structural unit (a1) represented by formula (1),
- wherein:
- R1, R2, and R3 each independently represent a hydrogen atom or a hydrocarbon group having 1 or more and 8 or less carbon atoms;
- R4 represents a divalent hydrocarbon group having 3 or more and 10 or less carbon atoms;
- and
- m represents a number of 0 or more and 10 or less;
- and a structural unit (a2) represented by formula (2):
- wherein
- R5, R6, and R7 each independently represent a hydrogen atom or a hydrocarbon group having 1 or more and 8 or less carbon atoms;
- R8 represents a divalent hydrocarbon group having 2 or more and 10 or less carbon atoms;
- n represents a number of 0 or more and 10 or less;
- and
- R9 represents a hydrocarbon group having 2 or more and 10 or less carbon atoms,
- wherein a molar content ratio [(a1)/(a2)] is from 30/70 to 95/5 on a basis of 100 mol % of the whole amount of structural units excluding a terminal structural unit in a molecular structure thereof.
Dependencies are inferred from the claim text.