| (19) |
 |
|
(11) |
EP 0 279 098 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
11.01.1989 Bulletin 1989/02 |
| (43) |
Date of publication A2: |
|
24.08.1988 Bulletin 1988/34 |
| (22) |
Date of filing: 05.06.1987 |
|
| (51) |
International Patent Classification (IPC)4: C10M 107/34
// C10N40/24 |
|
| (84) |
Designated Contracting States: |
|
BE CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
18.02.1987 US 16077
|
| (71) |
Applicant: MASTER CHEMICAL CORPORATION |
|
Perrysburg
Ohio 453551 (US) |
|
| (72) |
Inventor: |
|
- Twining, Thomas F.
Perrysburg
Ohio 43551 (US)
|
| (74) |
Representative: Hands, Horace Geoffrey et al |
|
GEORGE FUERY & CO
Whitehall Chambers
23 Colmore Row
Birmingham B3 2BL
Birmingham B3 2BL (GB) |
|
| |
|
| (54) |
Method of cooling and lubricating work pieces during grinding and severe machining
operations by means of cubic boron nitride |
(57) A method of cooling and lubricating work pieces during grinding and severe machining
operations by means of cubic boron nitride comprises the step of supplying to the
work pieces, as a coolant and lubricant, a copolymer of an alkylene oxide having from
2 to 3 carbon atoms with an alkylene glycol having from 2 to 3 carbon atoms, having
an average molecular weight from 190 to 400, and having a flash point over 340 degrees
F.