GB894045A - Stabilized chlorinated hydrocarbon solvent - Google Patents

Stabilized chlorinated hydrocarbon solvent

Info

Publication number
GB894045A
GB894045A GB32244/59A GB3224459A GB894045A GB 894045 A GB894045 A GB 894045A GB 32244/59 A GB32244/59 A GB 32244/59A GB 3224459 A GB3224459 A GB 3224459A GB 894045 A GB894045 A GB 894045A
Authority
GB
United Kingdom
Prior art keywords
solvent
condensate
formaldehyde
mol
weight
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
Application number
GB32244/59A
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.)
Argus Chemical NV
Argus Chemical Corp
Original Assignee
Argus Chemical NV
Argus Chemical Corp
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 Argus Chemical NV, Argus Chemical Corp filed Critical Argus Chemical NV
Publication of GB894045A publication Critical patent/GB894045A/en
Expired legal-status Critical Current

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
    • C23G5/0289—N-heterocyclics
    • 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

Abstract

A stabilized metal degreasing composition comprises (a) a chlorinated hydrocarbon solvent, particularly tri- or per-chlorethylene or methyl chloroform, and (b) 0,01-2% by weight of (a) of a condensation product of formaldehyde or acetaldehyde with a primary amine containing 1-3 carbon atoms (i.e. an alkyl-substituted hexahydrotriazine). Such condensates may be produced in situ by condensing the aldehyde and amine together in the solvent at below 45 DEG C. in equimolecular proportions and in such amounts that the concentrate obtained contains 10-50 g. of condensate per 100 ml. solvent, and thereafter diluting the concentrate with solvent to a condensate concentration of 0,01-2% by weight of the solvent.ALSO:Chlorinated hydrocarbon solvents, particularly tri- or per-chlorethylene or methyl chloroform, are stabilized by the incorporation of 0.01%-2% by weight of the solvent of a condensation product of formaldehyde or acetaldehyde with a primary amine containing 1-3 carbon atoms (i.e. an alkyl-substituted hexahydrotriazine). Such condensates may be produced in situ by condensing the aldehyde and amine in equimolecular proportions in the solvent at below 45 DEG C. in such amounts that the concentrate obtained contains 10g.-50g. of condensate per 100 ml. solvent, and thereafter diluting the concentrate with solvent to a condensate concentration of 0.01%-2% by weight of the solvent. In Example 1, equimolar amounts of 40% formaldehyde solution and isopropylamine are stirred together on an ice bath for 1 hour after which the upper condensate layer is separated, dried over potassium carbonate and stripped at 15 mm. pressure and 110 DEG C., the 1 : 3 : 5-triisopropyl hexahydrotriazine obtained being washed with water and dried again over potassium carbonate. In Example 2, 1 mol amine (or an aqueous solution containing 1 mol) is added to 50 ml. trichloroethylene containing 1 mol aldehyde (or an aqueous solution containing 1 mol) with stirring at below 45 DEG C. After 1 hour the aqueous layer is separated and extracted with trichlorethylene, the extracts being combined with the condensate layer. The condensate solutions so obtained are those derived from (a) formaldehyde and ethylamine, (b) formaldehyde and methylamine, (c) formaldehyde and isopropylamine, and (d) acetaldehyde and ethylamine.
GB32244/59A 1958-10-31 1959-09-22 Stabilized chlorinated hydrocarbon solvent Expired GB894045A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US770942A US2944088A (en) 1958-10-31 1958-10-31 Stabilization of chlorinated solbents

Publications (1)

Publication Number Publication Date
GB894045A true GB894045A (en) 1962-04-18

Family

ID=25090176

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32244/59A Expired GB894045A (en) 1958-10-31 1959-09-22 Stabilized chlorinated hydrocarbon solvent

Country Status (3)

Country Link
US (1) US2944088A (en)
BE (1) BE584163A (en)
GB (1) GB894045A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113109473A (en) * 2021-04-13 2021-07-13 长沙晨辰医药科技有限公司 Formaldehyde derivatization test method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3291745A (en) * 1963-04-29 1966-12-13 Du Pont Stabilization of trichlorethylene
US3546305A (en) * 1967-12-01 1970-12-08 Dow Chemical Co Stabilization of 1,1,1-trichloroethane
FR1555883A (en) * 1967-12-22 1969-01-31

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2094367A (en) * 1933-10-09 1937-09-28 Stauffer Chemical Co Stabilized carbon tetrachloride
US2043257A (en) * 1933-10-09 1936-06-09 Stauffer Chemical Co Preservation of chlorinated hydrocarbons
US2190776A (en) * 1937-01-27 1940-02-20 Du Pont Composition of matter
US2407405A (en) * 1943-02-15 1946-09-10 Du Pont Stabilization of tetrafluoroethylene
GB617572A (en) * 1945-11-27 1949-02-08 Mathieson Alkali Works A method of stabilizing halogeno-organic compounds

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113109473A (en) * 2021-04-13 2021-07-13 长沙晨辰医药科技有限公司 Formaldehyde derivatization test method
CN113109473B (en) * 2021-04-13 2022-01-14 长沙晨辰医药科技有限公司 Formaldehyde derivatization test method

Also Published As

Publication number Publication date
BE584163A (en)
US2944088A (en) 1960-07-05

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