GB996840A - Stabilization of chlorohydrocarbon solvents - Google Patents
Stabilization of chlorohydrocarbon solventsInfo
- Publication number
- GB996840A GB996840A GB1366964A GB1366964A GB996840A GB 996840 A GB996840 A GB 996840A GB 1366964 A GB1366964 A GB 1366964A GB 1366964 A GB1366964 A GB 1366964A GB 996840 A GB996840 A GB 996840A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- chlorohydrocarbon
- dinitrocumene
- dinitrotoluene
- methylene chloride
- 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
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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
- C23G5/02854—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons characterised by the stabilising or corrosion inhibiting additives
- C23G5/02883—Nitrogen-containing compounds
- C23G5/02887—Nitro-compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/42—Use of additives, e.g. for stabilisation
-
- 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
- C23C22/02—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 non-aqueous solutions
- C23C22/03—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 non-aqueous solutions containing phosphorus compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
C1- 3-chlorohydrocarbon solvents, especially methylene chloride, methyl chloroform, carbon tetrachloride and particularly tri- or perchlorethylene, are stabilised by the inclusion of 0.001-1%, preferably 0.005-1%, by weight of picric acid. The composition suitably also includes 0.01-5% of another nitro aromatic compound (e.g. those referred to in the main Specification), the preferred compounds being 2,4 - dinitrotoluene, 3,5 - dinitrobenzoic acid and 2,4-dinitrocumene.ALSO:Metal surfaces, e.g. of stainless steel, may be simultaneously degreased and phosphatized by employing a C1- 3-chlorohydrocarbon solvent, especially methylene chloride, methyl chloroform, carbon tetrachloride, and particularly tri- and per-chlorethylene which contains 1-10% of a C3- 8-aliphatic alcohol, preferably butyl or amyl alcohol, and/or an acid C3- 8-alkyl phosphate ester, 0.05-7.5%, preferably 0.2-0.8%, phosphoric acid, and, as a stabilizer, 0.001-1%, preferably 0.005-1%, by weight of picric acid. The composition suitably also includes 0.01-5% of another nitro aromatic compound (e.g. those referred to in the parent Specification), the preferred compounds being 2,4-dinitrotoluene, 3,5-dinitrobenzoic acid and 2,4-dinitrocumene, and generally contains at least 85% of the solvent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US271861A US3257326A (en) | 1963-04-10 | 1963-04-10 | Stabilized chlorohydrocarbon solvent composition |
| US271864A US3247027A (en) | 1963-04-10 | 1963-04-10 | Metal phosphatizing composition and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB996840A true GB996840A (en) | 1965-06-30 |
Family
ID=26955153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1366964A Expired GB996840A (en) | 1963-04-10 | 1964-04-02 | Stabilization of chlorohydrocarbon solvents |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB996840A (en) |
-
1964
- 1964-04-02 GB GB1366964A patent/GB996840A/en not_active Expired
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