US3293312A - Stabilized chlorinated hydrocarbon compositions - Google Patents
Stabilized chlorinated hydrocarbon compositions Download PDFInfo
- Publication number
- US3293312A US3293312A US344078A US34407864A US3293312A US 3293312 A US3293312 A US 3293312A US 344078 A US344078 A US 344078A US 34407864 A US34407864 A US 34407864A US 3293312 A US3293312 A US 3293312A
- Authority
- US
- United States
- Prior art keywords
- chlorinated hydrocarbon
- pyrocatechol
- trichlorethylene
- phenolic compounds
- phenol
- 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
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
- C23G5/02861—Oxygen-containing compounds
- C23G5/02864—Alcohols
- C23G5/0287—Alcohols aromatic
-
- 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
Definitions
- the present invention relates to a process for the stabilization of chlorinated hydrocarbons, particularly trichlorethylene and perchlorethylene, in order to avoid decomposition of these products and the simultaneous formation of oxidation products during manufacture, storage or use.
- the improvement of the chlorinated hydrocarbons treated according to the invention can be further shown by applying the well known United States Federal Specification No. O-T-634a, Type II. It may be recalled that this test is carried out as follows. The sample of chlorinated hydrocarbon to be tested is placed in an Erlenmeyer flask heated by an electric lamp and surmounted .by a condenser; a test piece of SAE 1020 steel is suspended above the liquid in the vapour stage and another test piece is placed at the bottom of the flask, that is to say in the liquid phase. Oxygen saturated with water is then continuously introduced for 48 hours, the introduction being effected at the rate of 10 to 12 bubbles of oxygen per minute.
- the mixture of phenolic compounds can in particular replace the single phenol used in the known synergistic compositions, such as those which form the object of our US. patent application Serial No. 314,650 already mentioned and comprise a phenol associated with an epoxy compound having another oxygen-containing function in the molecule.
- a chlorinated hydrocarbon selected from the group consisting of trichloroethylene and perchloroethylene, said chlorinated hydrocarbon containing, for the stabilization of the chlorinated hydrocarbon against oxidation, a synergistic mixture comprising at least two different phenolic compounds each in a concentration of 0.002 to 0.5 gram per liter of chlorinated hydrocarbon, a first of said phenolic compounds being selected from the group consisting of phenol, p-cresol, pyrocatechol, p-methylcatechol and p-tertiary-butylcatechol and a second of said phenolic compounds being selected from the group consisting of pyrocatechol, p-methylcatechol and p-tertiarybutylcatechol.
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE502752 | 1963-02-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3293312A true US3293312A (en) | 1966-12-20 |
Family
ID=3844753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US344078A Expired - Lifetime US3293312A (en) | 1963-02-13 | 1964-02-11 | Stabilized chlorinated hydrocarbon compositions |
Country Status (7)
Country | Link |
---|---|
US (1) | US3293312A (de) |
BE (1) | BE628386A (de) |
CH (1) | CH418316A (de) |
DE (1) | DE1220410B (de) |
ES (1) | ES295082A1 (de) |
NL (2) | NL289737A (de) |
SE (1) | SE311898B (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3676507A (en) * | 1969-03-24 | 1972-07-11 | Ici Ltd | Stabilized trichloroethylene |
US3852367A (en) * | 1970-12-23 | 1974-12-03 | Central Glass Co Ltd | Stabilized trichloroethylene or tetrachloroethylene |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT209884B (de) * | 1957-12-19 | 1960-06-25 | Solvay | Verfahren zur Stabilisierung chlorierter Kohlenwasserstoffe |
US2958712A (en) * | 1958-03-06 | 1960-11-01 | Du Pont | Stabilization of chlorinated hydrocarbons |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2906782A (en) * | 1956-12-21 | 1959-09-29 | Sicedison Spa | Stabilization of the trichloroethylene and stabilizing product therefor |
-
0
- BE BE628386D patent/BE628386A/xx unknown
- NL NL120684D patent/NL120684C/xx active
- NL NL289737D patent/NL289737A/xx unknown
-
1964
- 1964-01-07 ES ES0295082A patent/ES295082A1/es not_active Expired
- 1964-01-14 DE DES89054A patent/DE1220410B/de active Pending
- 1964-01-17 CH CH51064A patent/CH418316A/fr unknown
- 1964-01-27 SE SE1000/64A patent/SE311898B/xx unknown
- 1964-02-11 US US344078A patent/US3293312A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT209884B (de) * | 1957-12-19 | 1960-06-25 | Solvay | Verfahren zur Stabilisierung chlorierter Kohlenwasserstoffe |
US2958712A (en) * | 1958-03-06 | 1960-11-01 | Du Pont | Stabilization of chlorinated hydrocarbons |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3676507A (en) * | 1969-03-24 | 1972-07-11 | Ici Ltd | Stabilized trichloroethylene |
US3852367A (en) * | 1970-12-23 | 1974-12-03 | Central Glass Co Ltd | Stabilized trichloroethylene or tetrachloroethylene |
Also Published As
Publication number | Publication date |
---|---|
CH418316A (fr) | 1966-08-15 |
NL120684C (de) | |
BE628386A (de) | |
DE1220410B (de) | 1966-07-07 |
SE311898B (de) | 1969-06-30 |
NL289737A (de) | |
ES295082A1 (es) | 1964-04-01 |
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