US2017260473A1PendingUtilityA1
Lubricant for compression type refrigerating machines
Est. expirySep 28, 2032(~6.2 yrs left)· nominal 20-yr term from priority
C10N 2030/06C10N 2040/30C10N 2020/101C10N 2020/04C10N 2030/02C10N 2030/08C09K 2205/24F25B 31/002C09K 2205/122C10M 2209/1033C09K 5/045C10M 2209/04C10M 2209/1045F25B 1/00C10M 2209/1055C08F 8/04C10M 107/32C10M 2209/043C10M 131/04C10M 171/008F25B 2500/16C10M 107/24C10N 2220/302C10N 2240/30C10N 2230/06C10N 2220/021C10N 2230/02
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Claims
Abstract
The present invention is a lubricating oil for compression-type refrigerators using a difluoromethane (R32) refrigerant. The lubricating oil for compression-type refrigerators contains a first polyvinyl ether compound that is a polymer having a structural unit of a specific structure and has a carbon/oxygen molar ratio of from 3.0 to less than 4.0.
Claims
exact text as granted — not AI-modified1 . A lubricating oil for compression-type refrigerators using a difluoromethane (R32) refrigerant, the lubricating oil for compression-type refrigerators containing a first polyvinyl ether compound that is a polymer having a structural unit represented by the general formula (I-1) and has a carbon/oxygen molar ratio of from 3.0 to less than 4.0:
[in the formula, R 1 , R 2 and R 3 each represent a hydrogen atom or a hydrocarbon group having from 1 to 8 carbon atoms, and these may be the same or different; R 4 represents a hydrocarbon group having from 1 to 20 carbon atoms; R 1 to R 4 may be the same or different in each structural unit.]
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