US3293312A - Stabilized chlorinated hydrocarbon compositions - Google Patents

Stabilized chlorinated hydrocarbon compositions Download PDF

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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
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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
Application number
US344078A
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English (en)
Inventor
Ryckaert Andre
Domen Lucie Jeanne Henriette
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solvay SA
Original Assignee
Solvay SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Solvay SA filed Critical Solvay SA
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Publication of US3293312A publication Critical patent/US3293312A/en
Anticipated expiration legal-status Critical
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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.

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  • 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)
US344078A 1963-02-13 1964-02-11 Stabilized chlorinated hydrocarbon compositions Expired - Lifetime US3293312A (en)

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) NL120684C (de)
SE (1) SE311898B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
DE1220410B (de) 1966-07-07
BE628386A (de)
NL120684C (de)
CH418316A (fr) 1966-08-15
ES295082A1 (es) 1964-04-01
SE311898B (de) 1969-06-30
NL289737A (de)

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