| (19) |
 |
|
(11) |
EP 0 507 449 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
09.06.1993 Bulletin 1993/23 |
| (43) |
Date of publication A2: |
|
07.10.1992 Bulletin 1992/41 |
| (22) |
Date of filing: 03.03.1992 |
|
| (51) |
International Patent Classification (IPC)5: C10M 103/00, C10M 111/02, C10M 111/04, C10M 177/00
// (C10M103/00, 103:00, 103:02),(C10M111/02, 103:00, 105:24, 105:72),(C10M111/04,
103:00, 103:02, 105:22, 105:72, 107:04, 107:28, 107:32, 107:34, 107:38, 107:44), C10N20:06,
C10N40:24 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB GR IT LI LU MC NL PT SE |
| (30) |
Priority: |
04.03.1991 US 664169
|
| (71) |
Applicant: CASTROL INDUSTRIAL INC. |
|
Chicago, Illinois 60606 (US) |
|
| (72) |
Inventors: |
|
- Lum, Andrew F.
La Mirada,
California 90638 (US)
- Uribe, Juan M.
Valinda,
California 91744 (US)
- Hogan, John M.
Long Beach,
California 90804 (US)
- Persinger, Richard A.
Winfield,
Illinois 6019004 (US)
|
| (74) |
Representative: Baverstock, Michael George Douglas et al |
|
BOULT, WADE & TENNANT
27 Furnival Street
London, EC4A 1PQ
London, EC4A 1PQ (GB) |
|
| |
|
| (54) |
Carrier-free metalworking lubricant and method of making and using same |
(57) In one aspect the invention is a carrier-free pulverulent metalworking lubricant
containing a resin having a highly polar functional group, and in another aspect is
a method of the invention of forging a workpiece in a die which includes the step
of applying to at least one of the die and the workpiece a coating of an effective
amount of the carrier-free pulverulent lubricant composition. The use of the composition
and method of the invention significantly reduces smoke and oily waste generation
in hot forging operations by eliminating the use of oils or volatile organic compounds
as carriers, while providing acceptable performance, cleanability, and sprayability.