Global Patent Index - EP 0718396 B1

EP 0718396 B1 2001-02-28 - Lubricant for metal forming

Title (en)

Lubricant for metal forming

Title (de)

Schmiermittel für die Metallumformung

Title (fr)

Lubrifiant pour la déformation des métaux

Publication

EP 0718396 B1 (DE)

Application

EP 95118194 A

Priority

  • DE 4445993 A
  • US 13780498 A

Abstract (en)

[origin: EP0718396A1] A lubricant concentrate (I) for cold-forming metals contains (a) 20-50 pts. wt. polyethylene with a softening pt. above 120 degrees C. and a particle size of 0.1-50 mu m, (b) 2-8 pts. wt. polyacrylate with a mol. wt. of 4500-10,000 and (c) 2-8 pts. wt. styrene/acrylic acid copolymer with a mol. wt. of 150,000-250,000 and a Tg of 45-55 degrees C., with the acrylic acid components of (b) and (c) mainly present under usage conditions in the form of salts of inorganic cations, and the softening pts. of the different polymers distributed over the range between ambient temp. and 200 degrees C. Also claimed is a process for facilitating the cold forming of metal parts by applying a film of lubricant with the aid of concentrate (I), the film being applied from an aq. dispersion with a solids content of 5-25 wt.%.

IPC 1-7 (main, further and additional classification)

C10M 173/02

IPC 8 full level (invention and additional information)

C10M 173/02 (2006.01)

CPC (invention and additional information)

C10M 173/02 (2013.01); C10M 2201/02 (2013.01); C10M 2201/041 (2013.01); C10M 2201/042 (2013.01); C10M 2201/066 (2013.01); C10M 2201/085 (2013.01); C10M 2201/087 (2013.01); C10M 2205/022 (2013.01); C10M 2205/04 (2013.01); C10M 2205/14 (2013.01); C10M 2209/084 (2013.01); C10M 2209/104 (2013.01); C10M 2209/108 (2013.01); C10M 2219/044 (2013.01); C10N 2220/02 (2013.01); C10N 2240/402 (2013.01); C10N 2240/403 (2013.01); C10N 2240/404 (2013.01); C10N 2240/405 (2013.01); C10N 2240/406 (2013.01); C10N 2240/407 (2013.01); C10N 2240/408 (2013.01); C10N 2240/409 (2013.01); C10N 2250/02 (2013.01)

Combination set (CPC)

  1. C10M 173/02 + C10M 143/02 + C10M 145/14 + C10M 145/14 + C10M 143/10 + C10M 145/36 + C10M 145/28
  2. C10M 2209/084 + C10M 2209/084

Designated contracting state (EPC)

AT BE CH DE FR IT LI LU NL SE

EPO simple patent family

EP 0718396 A1 19960626; EP 0718396 B1 20010228; DE 4445993 A1 19960627; US 6034041 A 20000307

INPADOC legal status


2016-01-15 [REG AT MK07] EXPIRY

- Document: AT 199387 T

- Effective date: 20151118

2015-11-30 [REG CH PL] PATENT CEASED

2015-11-19 [REG NL MK] PATENT EXPIRED BECAUSE OF REACHING THE MAXIMUM LIFETIME OF A PATENT

- Effective date: 20151117

2015-11-18 [REG DE R071] EXPIRY OF RIGHT

- Document: DE 59509060

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2007-09-28 [REG CH PCAR] CHANGE OF THE ADDRESS OF THE REPRESENTATIVE

- Free text: ISLER & PEDRAZZINI AG;POSTFACH 1772;8027 ZUERICH (CH)

2002-02-20 [26N] NO OPPOSITION FILED

2001-11-18 [PG25 LU] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20011118

2001-04-05 [REF] CORRESPONDS TO:

- Document: DE 59509060 20010405

2001-03-23 [ET] FR: TRANSLATION FILED

2001-02-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): AT BE CH DE FR IT LI LU NL SE

2001-02-28 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2001-02-28 [REG CH NV] NEW AGENT

- Representative's name: ISLER & PEDRAZZINI AG

2001-02-28 [REF] CORRESPONDS TO:

- Document: AT 199387 T 20010315

2001-01-26 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: BARZANO' E ZANARDO ROMA S.P.A.

2000-11-29 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: CHEMETALL GMBH

1999-04-28 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19990315

1999-01-20 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: METALLGESELLSCHAFT AKTIENGESELLSCHAFT

1997-03-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19961227

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