EP0274776B1 - Bains et procédé pour le polissage chimique de surfaces en acierin oxydable - Google Patents
Bains et procédé pour le polissage chimique de surfaces en acierin oxydable Download PDFInfo
- Publication number
- EP0274776B1 EP0274776B1 EP87202404A EP87202404A EP0274776B1 EP 0274776 B1 EP0274776 B1 EP 0274776B1 EP 87202404 A EP87202404 A EP 87202404A EP 87202404 A EP87202404 A EP 87202404A EP 0274776 B1 EP0274776 B1 EP 0274776B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- baths
- bath
- acid
- polishing
- radical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005498 polishing Methods 0.000 title claims description 47
- 229910001220 stainless steel Inorganic materials 0.000 title claims description 15
- 239000010935 stainless steel Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 27
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 27
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 15
- 239000007864 aqueous solution Substances 0.000 claims abstract description 14
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- YCPXWRQRBFJBPZ-UHFFFAOYSA-N 5-sulfosalicylic acid Chemical compound OC(=O)C1=CC(S(O)(=O)=O)=CC=C1O YCPXWRQRBFJBPZ-UHFFFAOYSA-N 0.000 claims abstract 3
- 239000000126 substance Substances 0.000 claims description 16
- -1 2-ketobutyl Chemical group 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 125000001539 acetonyl group Chemical group [H]C([H])([H])C(=O)C([H])([H])* 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims 1
- 230000000295 complement effect Effects 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- WXHLLJAMBQLULT-UHFFFAOYSA-N 2-[[6-[4-(2-hydroxyethyl)piperazin-1-yl]-2-methylpyrimidin-4-yl]amino]-n-(2-methyl-6-sulfanylphenyl)-1,3-thiazole-5-carboxamide;hydrate Chemical compound O.C=1C(N2CCN(CCO)CC2)=NC(C)=NC=1NC(S1)=NC=C1C(=O)NC1=C(C)C=CC=C1S WXHLLJAMBQLULT-UHFFFAOYSA-N 0.000 description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 9
- 229910052759 nickel Inorganic materials 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- 229910052804 chromium Inorganic materials 0.000 description 8
- 239000011651 chromium Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 4
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 125000002877 alkyl aryl group Chemical group 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000001825 Polyoxyethene (8) stearate Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000004417 unsaturated alkyl group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/04—Heavy metals
- C23F3/06—Heavy metals with acidic solutions
Definitions
- the present invention relates to the composition of baths for the chemical polishing of stainless steel surfaces.
- Chemical polishing of metal surfaces is a well-known technique (electrolytic and chemical polishing of metals - W.J. Mc G. TEGART - Dunod - 1960 - p. 122 et seq.); it consists in treating the metal surfaces to be polished with oxidizing baths.
- baths are generally used comprising a mixture, in aqueous solution, of hydrochloric, phosphoric and nitric acids (patent US-A-2662814).
- suitable additives such as surfactants, viscosity regulators and brighteners.
- composition of a bath for the chemical polishing of stainless steel surfaces comprising, in aqueous solution, a mixture of phosphoric acid, nitric acid and acid hydrochloric acid, a viscosity regulator chosen from water-soluble polymers, a surfactant and sulfosalicylic acid as a brightening agent.
- abietamines which are very suitable in the baths according to the invention, are those in which at least one of the radicals X1 and X2 is a radical of general formula: -CH2-R2 in which R2 denotes a linear or cyclic, substituted or unsubstituted, saturated or unsaturated alkyl residue, comprising at least minus one carbonyl group.
- R2 denotes a linear or cyclic, substituted or unsubstituted, saturated or unsaturated alkyl residue, comprising at least minus one carbonyl group.
- Such substituted abietamines and the means of obtaining them are described in GB-A-734665.
- abietamines of this type which can be used in the baths according to the invention, are those in which the alkyl residue R2 is selected from acetonyl, 2-keto butyl, 4-methyl 2-keto-pentenyl-3, 4- hydroxy 4-methyl 2-keto pentyl, 2-keto cyclopentyl, 4-hydroxy 2-keto pentenyl-3, 2-keto cyclohexyl, 2,5-diketo hexyl and 2-phenyl 2-keto ethyl.
- the respective contents of hydrochloric, phosphoric and nitric acids, of sulfosalicylic acid and of abietic compound are chosen according to the nature of the metal treated, the working temperature and the desired duration. for polishing treatment.
- Baths according to the invention which are very suitable for ensuring the chemical polishing of surfaces of stainless steel alloyed with chromium and / or nickel, in a time of between 2 and 24 hours are those in which the aqueous solution comprises, per liter, between 1 and 6 moles of hydrochloric acid, between 0.01 and 1 mole of phosphoric acid, between 0.005 and 0.5 mole of nitric acid, between 0.05 and 20 g of sulfosalicylic acid and between 0.001 and 3 g of the abietic compound.
- Especially advantageous baths are those in which the overall molarity of the mixture of hydrochloric, phosphoric and nitric acids is between 1 and 7, preferably 1.8 and 6, the content of sulfosalicylic acid, expressed in g / l of the solution aqueous, being between 0.05 and 1.5 times the overall normality of the mixture of hydrochloric, phosphoric and nitric acids.
- these also comprise an alcohol, an ether or an ether-alcohol dissolved in the aqueous solution.
- This additional compound in the aqueous solution of bath depends on various parameters, in particular of said additional compound, of the abietic compound selected and of the contents of the constituents of the bath. In practice, contents of this additional compound of between 0.001 and 10 g per liter of aqueous solution are very suitable.
- the baths according to this embodiment of the invention make it possible to produce surface polishes of better quality, characterized in particular by a higher gloss.
- the polishing baths according to the invention may optionally contain additives usually present in known baths for the chemical polishing of metals, for example surfactants and viscosity regulators.
- a great advantage of the polishing baths according to the invention lies in their ability, after adaptation of the respective concentrations of their constituents, to carry out polishing at moderate speed of action, which can be distributed over several hours, so as to allow uniform polishing.
- large areas or areas that are difficult to access. They are especially well suited for polishing metal surfaces with a very large area, compared to the space available for the bath. For example, they find an interesting application for polishing metal surfaces whose area (expressed in m2) is between 1 and 10 times the volume (expressed in m3) of the polishing bath which is in contact with it.
- the baths according to the invention are suitable for polishing all surfaces of austenitic stainless steel. They find a particularly advantageous application in the polishing of austenitic stainless steels alloyed with chromium and nickel, in particular those containing between 12 and 26% of chromium, between 6 and 30% of nickel and between 0 and 6% of molybdenum, such as 18/8 and 18/10 / 2.5 steels, for example.
- the baths according to the invention also find an interesting application in the polishing of steel assemblies of different shades, in particular welded assemblies, without causing local galvanic corrosion of the assembly.
- they allow the polishing of welded assemblies combining elements in steels alloyed with chromium and nickel of grade 18/8 (ASTM-304 and 304L) with elements in steels alloyed with chromium, nickel and molybdenum of grade 18/10 / 2.5 (ASTM-316 and 316L).
- the invention also relates to a method for polishing a stainless steel surface, according to which the surface is brought into contact with a chemical polishing bath according to the invention.
- the polishing bath can be used at all temperatures and pressures for which there is no risk of degrading its constituents. However, it has proved advantageous to use the bath at atmospheric pressure, at a temperature above 25 ° C and below 100 ° C, temperatures between 40 (advantageously 50) and 80 ° C being preferred.
- the contact of the metal surface with the bath can be carried out in any suitable manner, for example by immersion.
- the contact time of the surface to be polished with the bath must be sufficient to achieve effective polishing of the surface; however, he cannot exceed a critical value beyond which local corrosions may appear on the surface.
- the optimum contact time depends on many parameters such as the metal or alloy constituting the surface to be polished, the configuration and initial roughness thereof, the composition of the bath, the working temperature, the possible turbulence of the bath. in contact with the surface, the ratio between the area of the metal surface to be polished and the volume of the bath used; it must be determined in each particular case by routine laboratory work.
- a supplement of nitric acid is added to the bath to regenerate it.
- the addition of the nitric acid supplement can be carried out continuously or at intervals. It is adjusted to keep the nitric acid content in the bath permanently within a range of values compatible with optimum polishing of the metal surface.
- ASTM-316L grade stainless steel plate steel alloyed with chromium (16.0-18.0%), nickel (10.0-14.0%) and molybdenum (2.0-3.0%) ).
- Example 1 The test described in Example 1 was repeated under the following conditions: ASTM-430 grade martensitic stainless steel plate (chrome alloy steel (16.0-18.0%), with nickel and carbon contents of 0.75% and 0.12% respectively).
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- ing And Chemical Polishing (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
- Steroid Compounds (AREA)
- Control Of El Displays (AREA)
- Paper (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT87202404T ATE101662T1 (de) | 1986-12-15 | 1987-12-03 | Baeder und verfahren zum chemischen polieren von rostfreien stahloberflaechen. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8617621 | 1986-12-15 | ||
| FR8617621A FR2608173B1 (fr) | 1986-12-15 | 1986-12-15 | Bains et procede pour le polissage chimique de surfaces en acier inoxydable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0274776A1 EP0274776A1 (fr) | 1988-07-20 |
| EP0274776B1 true EP0274776B1 (fr) | 1994-02-16 |
Family
ID=9341970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87202404A Expired - Lifetime EP0274776B1 (fr) | 1986-12-15 | 1987-12-03 | Bains et procédé pour le polissage chimique de surfaces en acierin oxydable |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0274776B1 (da) |
| JP (1) | JP2614879B2 (da) |
| KR (1) | KR940009677B1 (da) |
| AT (1) | ATE101662T1 (da) |
| BR (1) | BR8706782A (da) |
| CA (1) | CA1328598C (da) |
| DE (1) | DE3789102T2 (da) |
| DK (2) | DK655087A (da) |
| ES (1) | ES2062977T3 (da) |
| FI (1) | FI83545C (da) |
| FR (1) | FR2608173B1 (da) |
| NO (1) | NO173025C (da) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1003579A3 (fr) * | 1989-10-26 | 1992-04-28 | Solvay | Bains et procede pour le polissage chimique de surfaces en acier inxoydable. |
| BE1003671A3 (fr) * | 1990-02-23 | 1992-05-19 | Solvay | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. |
| BE1003670A3 (fr) * | 1990-02-23 | 1992-05-19 | Solvay | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. |
| BE1004452A3 (fr) * | 1990-06-19 | 1992-11-24 | Solvay | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. |
| BE1012670A3 (fr) * | 1999-05-07 | 2001-02-06 | Solvay | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. |
| CN106435610B (zh) * | 2016-09-28 | 2018-08-14 | 广州市雅色绅力金属制品有限责任公司 | 一种表面不锈钢工件的表面处理工艺 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2564753A (en) * | 1950-06-03 | 1951-08-21 | Hercules Powder Co Ltd | Corrosion inhibitor composition |
| GB734665A (en) * | 1953-06-10 | 1955-08-03 | American Chem Paint Co | Improvements in or relating to corrosion inhibitors and their use |
| FR2457315A1 (fr) * | 1979-05-25 | 1980-12-19 | Solvay | Bain pour le polissage chimique de surfaces en acier |
-
1986
- 1986-12-15 FR FR8617621A patent/FR2608173B1/fr not_active Expired - Fee Related
-
1987
- 1987-12-03 ES ES87202404T patent/ES2062977T3/es not_active Expired - Lifetime
- 1987-12-03 DE DE3789102T patent/DE3789102T2/de not_active Expired - Fee Related
- 1987-12-03 EP EP87202404A patent/EP0274776B1/fr not_active Expired - Lifetime
- 1987-12-03 AT AT87202404T patent/ATE101662T1/de not_active IP Right Cessation
- 1987-12-07 KR KR1019870013925A patent/KR940009677B1/ko not_active IP Right Cessation
- 1987-12-08 CA CA000553807A patent/CA1328598C/fr not_active Expired - Fee Related
- 1987-12-14 DK DK655087A patent/DK655087A/da not_active IP Right Cessation
- 1987-12-14 NO NO875201A patent/NO173025C/no not_active IP Right Cessation
- 1987-12-14 BR BR8706782A patent/BR8706782A/pt not_active IP Right Cessation
- 1987-12-14 DK DK655087D patent/DK170861B1/da not_active IP Right Cessation
- 1987-12-15 FI FI875506A patent/FI83545C/fi not_active IP Right Cessation
- 1987-12-15 JP JP62317305A patent/JP2614879B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FI83545C (fi) | 1991-07-25 |
| CA1328598C (fr) | 1994-04-19 |
| DE3789102T2 (de) | 1994-08-25 |
| DK655087D0 (da) | 1987-12-14 |
| FR2608173A1 (fr) | 1988-06-17 |
| NO173025B (no) | 1993-07-05 |
| DK170861B1 (da) | 1996-02-12 |
| FI83545B (fi) | 1991-04-15 |
| FI875506A (fi) | 1988-06-16 |
| ES2062977T3 (es) | 1995-01-01 |
| NO875201D0 (no) | 1987-12-14 |
| ATE101662T1 (de) | 1994-03-15 |
| KR880007796A (ko) | 1988-08-29 |
| NO173025C (no) | 1993-10-13 |
| JPS63161179A (ja) | 1988-07-04 |
| EP0274776A1 (fr) | 1988-07-20 |
| DE3789102D1 (de) | 1994-03-24 |
| DK655087A (da) | 1988-06-16 |
| FR2608173B1 (fr) | 1993-07-16 |
| BR8706782A (pt) | 1988-07-19 |
| NO875201L (no) | 1988-06-16 |
| JP2614879B2 (ja) | 1997-05-28 |
| KR940009677B1 (ko) | 1994-10-15 |
| FI875506A0 (fi) | 1987-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BE1004452A3 (fr) | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. | |
| EP0274776B1 (fr) | Bains et procédé pour le polissage chimique de surfaces en acierin oxydable | |
| EP0206386B1 (fr) | Bains et procédé pour le polissage chimique de surfaces en acier inoxydable | |
| EP0516653B1 (fr) | Bains et procede pour le polissage chimique de surfaces en acier inoxydable | |
| EP0019964A1 (fr) | Bain pour le polissage chimique de surfaces en acier | |
| CA2028195A1 (fr) | Bains et procede pour le polissage chimique de surfaces en cuivre ou en alliage de cuivre | |
| EP0516652B1 (fr) | Bains et procede pour le polissage chimique de surfaces en acier inoxydable | |
| FR2578271A1 (fr) | Bains et procede pour le polissage chimique de surfaces en acier. | |
| EP0309031A1 (fr) | Bains et procédé pour le polissage chimique de surfaces en cuivre ou en alliage de cuivre | |
| US5135610A (en) | Baths and process for chemical polishing of stainless steel surfaces | |
| BE1003579A3 (fr) | Bains et procede pour le polissage chimique de surfaces en acier inxoydable. | |
| BE1012670A3 (fr) | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. | |
| EP0753083B1 (fr) | Bains et procede pour le polissage chimique de surfaces en acier inoxydable | |
| FR2527230A1 (fr) | Bains de revetement de zinc, renfermant des brillanteurs formes de derives d'acide a-aminopropionique et de leurs polymeres | |
| SU1627592A1 (ru) | Раствор дл одновременного обезжиривани , травлени и полировани меди и ее сплавов | |
| SU300497A1 (ru) | АСТЕОР ДЛЯ ХИМИЧЕСКОЙ ПОЛИРОВКИ ИЗДЕЛИЙ из НЕРЖАВЕЮЩЕЙ СТАЛИ | |
| EP0149830B2 (fr) | Bain électrolytique pour le dépôt de couches minces d'or pur | |
| FR2634498A1 (fr) | Bain de polissage chimique de metaux et alliages de metaux | |
| BE569991A (da) | ||
| BE526661A (da) | ||
| EP0494563A1 (fr) | Procédé d'électroextraction du zinc |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
| 17P | Request for examination filed |
Effective date: 19890112 |
|
| 17Q | First examination report despatched |
Effective date: 19900209 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SOLVAY |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
| REF | Corresponds to: |
Ref document number: 101662 Country of ref document: AT Date of ref document: 19940315 Kind code of ref document: T |
|
| REF | Corresponds to: |
Ref document number: 3789102 Country of ref document: DE Date of ref document: 19940324 |
|
| ITF | It: translation for a ep patent filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19940518 |
|
| REG | Reference to a national code |
Ref country code: GR Ref legal event code: FG4A Free format text: 3011803 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19941231 Ref country code: LI Effective date: 19941231 Ref country code: CH Effective date: 19941231 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2062977 Country of ref document: ES Kind code of ref document: T3 |
|
| EAL | Se: european patent in force in sweden |
Ref document number: 87202404.7 |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19991126 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GR Payment date: 19991129 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19991201 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19991222 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19991224 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19991230 Year of fee payment: 13 Ref country code: AT Payment date: 19991230 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19991231 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20000105 Year of fee payment: 13 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001203 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001203 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001204 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001231 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20001231 |
|
| BERE | Be: lapsed |
Owner name: SOLVAY Effective date: 20001231 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010701 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20001203 |
|
| EUG | Se: european patent has lapsed |
Ref document number: 87202404.7 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010831 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20010701 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011002 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011204 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20020112 |
|
| APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051203 |