(19) |
 |
|
(11) |
EP 0 017 072 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
|
26.11.1980 Bulletin 1980/24 |
(43) |
Date of publication A2: |
|
15.10.1980 Bulletin 1980/21 |
(22) |
Date of filing: 18.03.1980 |
|
|
(84) |
Designated Contracting States: |
|
BE DE FR GB IT NL SE |
(30) |
Priority: |
02.04.1979 US 26269
|
(71) |
Applicant: THE DOW CHEMICAL COMPANY |
|
() |
|
|
|
|
(54) |
Water-resistant lubricant for compressors and marine engines |
(57) ynthetic lubricants containing (A) 15 to 45 weight percent of an ester of a hindered
polyhydric alcohol having 3 to 6 hydroxy groups and 5 to 10 carbon atoms with one
or more alkanoic acids having 4 to 18 carbon atoms blended with (B) 85 to 55 weight
percent of one or more polyoxyalkylene glycols or their mono- or dialkyl ethers having
a 400-5000 number average molecular weight. The blends are compounded with antioxidants,
corrosion inhibitors, and metal deactivators to produce a superior lubricant for rotary
screw compressors that has a long life.