| (19) |
 |
|
(11) |
EP 0 267 681 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
13.03.1991 Bulletin 1991/11 |
| (43) |
Date of publication A2: |
|
18.05.1988 Bulletin 1988/20 |
| (22) |
Date of filing: 24.09.1987 |
|
| (51) |
International Patent Classification (IPC)4: D06M 15/41 |
|
| (84) |
Designated Contracting States: |
|
BE CH DE FR GB LI |
| (30) |
Priority: |
14.10.1986 US 918376
|
| (71) |
Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY |
|
St. Paul,
Minnesota 55133-3427 (US) |
|
| (72) |
Inventors: |
|
- Payet, George L.
c/o Minnesota Mining and
St. Paul
Minnesota 55144-1000 (US)
- Chang, John Cheng-Chung
c/o Minnesota Mining and
St. Paul
Minnesota 55144-1000 (US)
|
| (74) |
Representative: Wilhelm, Stefan et al |
|
3M Laboratories (Europe) GmbH
Office of Intellectual Property Counsel
Hansastrasse 9
41453 Neuss
41453 Neuss (DE) |
|
| |
|
| (54) |
Treating fibrous polyamide articles |
(57) A method for providing fibrous polyamide materials with stain resistance is provided.
The method comprises contacting the fibrous polyamide materials with an aqueous solution
comprising a normally solid, water-soluble, partially sulfonated novolak resin, which
comprises the condensation product of at least one phenolic compound and an aldehyde,
and a water-soluble divalent metal salt.