(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

(21) Application number: 80101408

(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
 ()

(72) Inventor:
  • Carswell, Robert
     ()

   


(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.





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