ES433096A1 - Procedure for preparing a product for the pretraction of ferreas surfaces. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for preparing a product for the pretraction of ferreas surfaces. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES433096A1 ES433096A1 ES433096A ES433096A ES433096A1 ES 433096 A1 ES433096 A1 ES 433096A1 ES 433096 A ES433096 A ES 433096A ES 433096 A ES433096 A ES 433096A ES 433096 A1 ES433096 A1 ES 433096A1
- Authority
- ES
- Spain
- Prior art keywords
- reactor
- tannin
- product
- type
- distillation
- 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
Links
- 238000000034 method Methods 0.000 title 1
- 239000002904 solvent Substances 0.000 abstract 4
- 235000018553 tannin Nutrition 0.000 abstract 4
- 229920001864 tannin Polymers 0.000 abstract 4
- 239000001648 tannin Substances 0.000 abstract 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 3
- 239000003638 chemical reducing agent Substances 0.000 abstract 3
- 238000004821 distillation Methods 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract 2
- WTDHULULXKLSOZ-UHFFFAOYSA-N Hydroxylamine hydrochloride Chemical compound Cl.ON WTDHULULXKLSOZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000003963 antioxidant agent Substances 0.000 abstract 2
- 230000003078 antioxidant effect Effects 0.000 abstract 2
- 239000011261 inert gas Substances 0.000 abstract 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 abstract 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010790 dilution Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 239000008096 xylene Substances 0.000 abstract 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Paints Or Removers (AREA)
Abstract
Process for preparing a product for pretreatment of railway surfaces, intended for varnishing, characterized in that a tannin of a gallo-ellagic nature, a solvent of the type of nn dimethylformamide or dimethylacetamide, a strongly reducing substance of the hydroxylanine sulfate type or hydroxylamine hydrochloride or hydrated hydrazine, an antioxidant of the type of 2,6 di-butyl tertiary-4-methylphenol, the weight of said reducing substance being 20 to 30 times less than that of tannin, while the weight of said antioxidant is 5 to 10 times lower than that of the same reducing substance, a solvent of the toluene or xylene type is also introduced and then, passing an inert gas stream through the reactor, heat is provided to the reactor so that it reaches and maintains an internal temperature of 130 to 140ºC and at said temperature. A first distillation with corresponding azeotropic separation of the water resulting from the synthesis of the tannin is carried out, at reflux, distillation which is continued for 2 or 3 hours until the weight of the separated water is at least equal to 25% of the tannin introduced into the reactor; suspended the inert gas admission, a second distillation is carried out under vacuum in order to recover the solvents introduced previously; finally, after the heating of the reactor is interrupted, a mixture of solvents and water is introduced therein for the dilution of the product obtained in the reactor itself, a product that is suitable for use at room temperature. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT348474A IT1028526B (en) | 1974-09-17 | 1974-09-17 | PROCEDURE FOR PREPARING A PRODUCT FOR THE PRE-TREATMENT OF IRON SURFACES INTENDED FOR PAINTING AND PRODUCT OBTAINED WITH THE SAME PROCESS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES433096A1 true ES433096A1 (en) | 1976-12-01 |
Family
ID=11108229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES433096A Expired ES433096A1 (en) | 1974-09-17 | 1974-12-19 | Procedure for preparing a product for the pretraction of ferreas surfaces. (Machine-translation by Google Translate, not legally binding) |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2460842A1 (en) |
| ES (1) | ES433096A1 (en) |
| IT (1) | IT1028526B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1111586B (en) * | 1979-03-16 | 1986-01-13 | Parker Italiana | PROTECTIVE COMPOSITIONS FOR STEEL SURFACES AND PROCESS FOR THEIR PREPARATION |
| CN108130547B (en) * | 2018-01-03 | 2020-04-21 | 中国科学院过程工程研究所 | Degreasing and rust removing cleaning fluid and method of using the same |
-
1974
- 1974-09-17 IT IT348474A patent/IT1028526B/en active
- 1974-12-19 ES ES433096A patent/ES433096A1/en not_active Expired
- 1974-12-21 DE DE19742460842 patent/DE2460842A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2460842A1 (en) | 1976-03-25 |
| IT1028526B (en) | 1979-02-10 |
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