Claims
- 1. A method for cleaning a metallic surface comprising flooding a metallic surface contaminated with deposits with a mixture comprising (i) water, (ii) chippings of woods selected from the group consisting of merantis, bongossis, mahoganies, sipos, khayas, lauans, and sapellis, and (iii) a member selected from the group consisting of polyaspartic acid, salts of polyaspartic acid, and polysuccinimide, and thereby cleaning the metallic surface.
- 2. The method of claim 1, wherein the wood chippings consist essentially of meranti wood.
- 3. The method of claim 1, wherein the wood chippings have a particle size ranging from 0.1 to 20 mm.
- 4. The method of claim 1, wherein the wood chippings have a particle size ranging from 0.1 to 0.7 mm.
- 5. A method for cleaning an enamelled surface comprising flooding an enamelled surface contaminated with deposits with a mixture comprising (i) water, (ii) chippings of woods selected from the group consisting of merantis, bongossis, mahoganies, sipos, khayas, lauans, and sapellis, and (iii) a member selected from the group consisting of polyaspartic acid, and polysuccinimide, and thereby leaning the enamelled surface.
- 6. The method of claim 5, wherein the wood chippings consist essentially of meranti wood.
- 7. The method of claim 5, wherein the wood chippings have a particle size ranging from 0.1 to 20 mm.
- 8. The method of claim 5, wherein the wood chippings have a particle size ranging from 0.1 to 0.7 mm.
Priority Claims (2)
Number |
Date |
Country |
Kind |
197 31 573 |
Jul 1997 |
DE |
|
198 05 607 |
Feb 1998 |
DE |
|
Parent Case Info
This application is a divisional of U.S. Ser. No. 09/463,093, filed Feb. 16, 2000, now U.S. Pat. No. 6,231,680, which is a 371 of application Ser. No. PCT/EP98/04300, filed Jul. 10, 1998.
US Referenced Citations (5)
Foreign Referenced Citations (4)
Number |
Date |
Country |
19731573 |
Feb 1999 |
DE |
0693298 |
May 1994 |
JP |
6220487 |
Aug 1994 |
JP |
08-322916 |
Oct 1996 |
JP |
Non-Patent Literature Citations (1)
Entry |
Ulmann's Encyclopedia of Industrial Chemistry, 6th Edition, 2000 Electronic Release Wood Table 7. |