| (19) |
 |
|
(11) |
EP 0 047 058 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
17.03.1982 Bulletin 1982/11 |
| (43) |
Date of publication A2: |
|
10.03.1982 Bulletin 1982/10 |
| (22) |
Date of filing: 16.07.1981 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE FR GB IT LI LU NL SE |
| (30) |
Priority: |
22.07.1980 GB 8023880
02.03.1981 GB 8106557
|
| (71) |
Applicant: ADNOVUM AG |
|
() |
|
| (72) |
Inventor: |
|
- Lauchenauer, Alfred Emil
()
|
|
| |
|
| (54) |
Improvements in and relating to the application of reactable reagents with substrates |
(57) This invention relates to a method of treating a surface with reagents. The method
comprises:
(i) establishing a reagent in a liquid phase;
(ii) forming a foam of said liquid phase;
(iii) applying said foam to said surface to be treated;
(iv) causing or allowing the foam to collapse at the interface of said surface being
treated to deposit the reagent thereon and thereafter removing or deactivating the
reagent on said surface when the treatment is complete, whereby the rate of foam collapse
is controlled to controi the rate of application of the reagent to the said surface.