| (19) |
 |
|
(11) |
EP 0 690 121 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
31.07.1996 Bulletin 1996/31 |
| (43) |
Date of publication A2: |
|
03.01.1996 Bulletin 1996/01 |
| (22) |
Date of filing: 15.06.1995 |
|
| (51) |
International Patent Classification (IPC)6: C10M 111/04, C10M 169/04
// (C10M111/04, 101:02, 105:14, 107:08),(C10M169/04, 101:02, 129:08, 143:06), C10N40:24,
C10N50:02 |
|
| (84) |
Designated Contracting States: |
|
ES FR IT NL |
| (30) |
Priority: |
27.06.1994 US 265901
|
| (71) |
Applicant: CARRIER CORPORATION |
|
Syracuse
New York 13221 (US) |
|
| (72) |
Inventor: |
|
- Tripathi, Krishna C.
Liverpool,
New York 13090 (US)
|
| (74) |
Representative: Schmitz, Jean-Marie et al |
|
Dennemeyer & Associates Sàrl
P.O. Box 1502
L-1015 Luxembourg
L-1015 Luxembourg (LU) |
|
| |
|
| (54) |
Metal forming lubricant |
(57) A lubricant for use in metal forming processes such as the stamping and cutting of
sheet aluminum. The lubricant is a mixture of mineral spirits and one or more compounds
selected from the group consisting of polyisobutenes having molecular weights of from
320 to 460 and alkylene glycols having one terminal hydroxyl group and a viscosity
in the range of from 65 to 1715 Saybolt Universal Seconds (S.U.S.) at 100° C groups.
These compounds have excellent lubricating properties and are easily miscible in mineral
spirits. The lubricant may contain up to 80 percent by weight of the selected compounds.
In a preferred embodiment, the proportions in the lubricant mixture are 70 percent
by weight of mineral spirits, 20 percent by weight of the selected compound or compounds
and 10 percent by weight of other additives.