DK170075B1 - Methylene chloride based agent comprising at least one stabilizer and method for degreasing metals - Google Patents
Methylene chloride based agent comprising at least one stabilizer and method for degreasing metals Download PDFInfo
- Publication number
- DK170075B1 DK170075B1 DK376587A DK376587A DK170075B1 DK 170075 B1 DK170075 B1 DK 170075B1 DK 376587 A DK376587 A DK 376587A DK 376587 A DK376587 A DK 376587A DK 170075 B1 DK170075 B1 DK 170075B1
- Authority
- DK
- Denmark
- Prior art keywords
- methylene chloride
- based agent
- metals
- stabilizer
- degreasing
- Prior art date
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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
- C23G5/0288—Epoxy 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Anti-Oxidant Or Stabilizer Compositions (AREA)
- Epoxy Compounds (AREA)
Abstract
Description
DK 170075 B1 iDK 170075 B1 i
Den foreliggende opfindelse angår et methylenchloridbase-ret middel omfattende mindst én stabilisator til anvendelse ved affedtning af metaller.The present invention relates to a methylene chloride-based agent comprising at least one stabilizer for use in degreasing metals.
5 Man anvender til affedtning af metaller, tekstiler, keramiske materiale og glasarter oftest chlorerede carbon-hydrider på grund af deres opløsningsevne, deres ikke-brændbarhed og deres relativt lave kogepunkter.5 Most often chlorinated hydrocarbons are used for degreasing metals, textiles, ceramics and glass because of their solubility, their non-flammability and their relatively low boiling points.
10 Methylenchlorid er i særlig grad stabilt overfor oxidation, hydrolyse og pyrolyse. Det deltager ikke i nogen fotokemisk reaktion. Dets kogepunkt deraf har gjort det muligt at anvende det ved lave temperaturer. Alle disse egenskaber bevirker således, at det udgør et foretrukket 15 opløsningsmiddel ved affedtning af metaller.Methylene chloride is particularly stable to oxidation, hydrolysis and pyrolysis. It does not participate in any photochemical reaction. Its boiling point has made it possible to use it at low temperatures. All of these properties cause it to be a preferred solvent for degreasing metals.
Under en sådan behandling kan det dog reagere med aromatiske forbindelser, som er tilført under bearbejdningen af letmetaller.However, during such treatment, it may react with aromatic compounds added during the processing of light metals.
2020
Der sker således ifølge en reaktions-mekanisme (af typen Friedel og Crafts) dannelse af saltsyre og af tungere forbindelser, som forurener methylenchloridet. Der er således en risiko for eksplosion ved dekomponering (dannel-25 sen af syrechlorid, phosgen eller gasformig hydrogenchlo-rid).Thus, according to a reaction mechanism (Friedel and Crafts type) formation of hydrochloric acid and of heavier compounds which contaminate the methylene chloride occurs. Thus, there is a risk of explosion by decomposition (the formation of acid chloride, phosgene or gaseous hydrogen chloride).
Det er for at overkomme disse ulemper nødvendigt, at sætte små mængder af organiske produkter, som forhindrer 30 denne reaktion til methylenchloridet; dette er såkaldt stabilisering.To overcome these drawbacks, it is necessary to add small amounts of organic products which prevent this reaction to the methylene chloride; this is called stabilization.
Man har tidligere beskrevet stabiliserede methylenchlo-rid-præparater. I US patentskrift nr. 3 887 628 omtales 35 et methylenchlorid indeholdende 0,05-2% butylenoxid og propylenoxid. I US patentskrift nr. 3 923 912 omtales methylenchlorid indeholdende 0,05-2% acetone eller DK 170075 B1 2 methylethylketon og eventuelt propylenoxid. I US patentskrift nr. 4 108 910 omtales methylchlorid indeholdende et epoxid og en alifatisk monoether. I EP patentskrift nr. 11 658 omtales methylenchlorid, der er stabiliseret 5 med ethylformiat eller methylformiat. I US patentskrift nr. 3 860 665 beskrives et methylenchloridholdigt middel, der i forhold til vægten af methylenchlorid indeholder 0,05-2 vægt-% tetrahydrofuran og propylenoxid.Stabilized methylene chloride preparations have been described previously. U.S. Patent No. 3,887,628 discloses a methylene chloride containing 0.05-2% butylene oxide and propylene oxide. U.S. Patent No. 3,923,912 discloses methylene chloride containing 0.05-2% acetone or DK 170075 B1 2 methyl ethyl ketone and optionally propylene oxide. U.S. Patent No. 4,108,910 discloses methyl chloride containing an epoxide and an aliphatic monoether. EP Patent No. 11,658 discloses methylene chloride stabilized with ethyl formate or methyl formate. U.S. Patent No. 3,860,665 discloses a methylene chloride containing agent containing 0.05-2% by weight of tetrahydrofuran and propylene oxide in relation to the weight of methylene chloride.
10 Trods alle de i ovennævnte skrifter beskrevne midler indeholder op til to stabilisatorer er de ikke så stabile, at de tilfredsstiller den såkaldte BAM-test.10 Despite all the means described in the above-mentioned scripts contain up to two stabilizers, they are not so stable as to satisfy the so-called BAM test.
Det er således et formål med den foreliggende opfindelse 15 at tilvejebringe et middel anvendeligt til affedtning af metaller, som er stabilt i nærvær af letmetaller, såsom aluminium eller disses legeringer, og som er i stand til at tilfredsstille den såkaldte BAM-test.It is thus an object of the present invention to provide a means useful for degreasing metals which are stable in the presence of light metals, such as aluminum or their alloys, and which are capable of satisfying the so-called BAM test.
20 Dette opnås ved det methylenchloridbaserede middel ifølge opfindelsen, der er ejendommeligt ved, at det som stabilisatorer indeholder: a) propylenoxid eller butylenoxid, 25 b) acetone, og c) tetrahydrofuran, 30 idet forbindelserne a), b) og c) hver især udgør 0,05-5 vægt-% af præparatets samlede masse. ^This is achieved by the methylene chloride-based agent of the invention, characterized in that it contains as stabilizers: a) propylene oxide or butylene oxide, 25 b) acetone, and c) tetrahydrofuran, 30 having compounds a), b) and c) each. constitutes 0.05-5% by weight of the total mass of the composition. ^
Det methylenchloridbaserede middel ifølge opfindelsen f.The methylene chloride-based agent of the invention f.
indeholder fortrinsvis 0,2-2 vægt-% af hver af komponen-35 terne a), b) og c) i forhold til præparatets samlede masse.preferably contains 0.2-2% by weight of each of components a), b) and c) relative to the total mass of the composition.
DK 170075 Bl 3DK 170075 Pg 3
Det methylenchloridbaserede middel ifølge opfindelsen fremstilles ved simpel sammenblanding af stabilisatorerne og methylenchlorid. Denne blanding kan foretages ved omgivelsernes temperatur, især ved en temperatur mellem 5 5 og 30 °C.The methylene chloride-based agent of the invention is prepared by simple mixing of the stabilizers and methylene chloride. This mixture can be made at ambient temperature, especially at a temperature between 5 and 30 ° C.
Den foreliggende opfindelse angår ligeledes en fremgangsmåde til affedtning af metaller under anvendelse af det methylenchloridbaserede præparat ifølge opfindelsen.The present invention also relates to a process for degreasing metals using the methylene chloride-based composition of the invention.
10 Fremgangsmåden kan gennemføres i dampfase eller i væskefase i overensstemmelse med konventionelle fremgangsmåder.The process can be carried out in vapor phase or in liquid phase according to conventional methods.
EKSEMPELEXAMPLE
1515
Man fremstiller et præparat med sammensætningen (i vægt- %) - methylenchlorid 98 20 - propylenoxid 0,5 - acetone 1 - tetrahydrofuran 0,5A composition is prepared having the composition (in% by weight) - methylene chloride 98 20 - propylene oxide 0.5 - acetone 1 - tetrahydrofuran 0.5
Dette præparat er i stand til at tilfredsstille den så-25 kaldte BAM-test (Bundesanstalt fiir Materialpriifung, Vesttyskland ).This preparation is capable of satisfying the so-called BAM test (Bundesanstalt fiir Materialpriifung, West Germany).
Man vil huske, at de fire trin i BAM-testen er: 30 1) Man sætter til 100 ml af præparatet 100 ml toluen, 0,7 g AlClg og 18 g aluminium i skælform. Blandingen holdes under tilbagesvaling i 18 timer i et dampvandbad ved 58 °C, 35 2) til blandingen 1) sætter man 1 g Zn-stearat, hvorpå man opvarmer under tilbagesvaling i 18 timer, 4 DK 170075 B1 3) til blandingen 1) sætter man 10 ml oliesyre, hvorpå man opvarmer under tilbagesvaling i 18 timer, i 4) destillation af 300 ml af det methylenchloridbaserede 5 middel i tre fraktioner på 100 ml og derpå afprøvning 1) på hver af de tre fraktioner.It will be remembered that the four steps of the BAM test are: 30 1) 100 ml of the preparation are added 100 ml of toluene, 0.7 g of AlClg and 18 g of aluminum in dandruff. The mixture is refluxed for 18 hours in a steam water bath at 58 ° C, 2) to the mixture 1) 1 g of Zn stearate is added, and then refluxed for 18 hours, 4) to the mixture 1) 10 ml of oleic acid and then refluxed for 18 hours, in 4) distillation of 300 ml of the methylene chloride-based agent in three fractions of 100 ml and then test 1) on each of the three fractions.
Et middel kan BAM-godkendes, dersom det ikke udviser nogen som helst reaktion under forløbet af disse afprøv-10 ninger.An agent can be BAM approved if it does not show any reaction during the course of these tests.
15 20 25 3015 20 25 30
VV
/ 35/ 35
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8610527 | 1986-07-21 | ||
| FR8610527A FR2601701B1 (en) | 1986-07-21 | 1986-07-21 | METHYLENE CHLORIDE COMPOSITION - USE THEREOF FOR DEGREASING METALS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK376587D0 DK376587D0 (en) | 1987-07-20 |
| DK376587A DK376587A (en) | 1988-01-22 |
| DK170075B1 true DK170075B1 (en) | 1995-05-15 |
Family
ID=9337577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK376587A DK170075B1 (en) | 1986-07-21 | 1987-07-20 | Methylene chloride based agent comprising at least one stabilizer and method for degreasing metals |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0258080B1 (en) |
| JP (1) | JPS6328891A (en) |
| AT (1) | ATE71671T1 (en) |
| CA (1) | CA1295207C (en) |
| DE (1) | DE3776038D1 (en) |
| DK (1) | DK170075B1 (en) |
| ES (1) | ES2006201A6 (en) |
| FR (1) | FR2601701B1 (en) |
| GR (1) | GR3004211T3 (en) |
| IE (1) | IE59866B1 (en) |
| NO (1) | NO173616C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2729135A1 (en) * | 1995-01-10 | 1996-07-12 | Atochem Elf Sa | COMPOSITION BASED ON STABILIZED METHYLENE CHLORIDE, USEFUL FOR DEGREASING METALS |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2029261A5 (en) * | 1969-01-21 | 1970-10-16 | Solvay | Stabilising agent for 1,1,1- trichlorothene |
| US3860665A (en) * | 1973-02-23 | 1975-01-14 | Diamond Shamrock Corp | Methylene chloride stabilized with tetrahydrofuran |
| US3923912A (en) * | 1973-02-23 | 1975-12-02 | Diamond Shamrock Corp | Methylene chloride stabilized with ketones |
-
1986
- 1986-07-21 FR FR8610527A patent/FR2601701B1/en not_active Expired - Lifetime
-
1987
- 1987-07-09 AT AT87401628T patent/ATE71671T1/en not_active IP Right Cessation
- 1987-07-09 EP EP19870401628 patent/EP0258080B1/en not_active Expired - Lifetime
- 1987-07-09 DE DE8787401628T patent/DE3776038D1/en not_active Expired - Fee Related
- 1987-07-15 JP JP62176956A patent/JPS6328891A/en active Granted
- 1987-07-20 ES ES878702114A patent/ES2006201A6/en not_active Expired
- 1987-07-20 DK DK376587A patent/DK170075B1/en not_active IP Right Cessation
- 1987-07-20 CA CA000542470A patent/CA1295207C/en not_active Expired - Lifetime
- 1987-07-20 NO NO873028A patent/NO173616C/en not_active IP Right Cessation
- 1987-07-20 IE IE195687A patent/IE59866B1/en not_active IP Right Cessation
-
1992
- 1992-04-01 GR GR920400581T patent/GR3004211T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2601701A1 (en) | 1988-01-22 |
| CA1295207C (en) | 1992-02-04 |
| DK376587A (en) | 1988-01-22 |
| JPS6328891A (en) | 1988-02-06 |
| NO173616C (en) | 1994-01-05 |
| NO173616B (en) | 1993-09-27 |
| GR3004211T3 (en) | 1993-03-31 |
| ES2006201A6 (en) | 1989-04-16 |
| DE3776038D1 (en) | 1992-02-27 |
| JPH0356313B2 (en) | 1991-08-27 |
| EP0258080A1 (en) | 1988-03-02 |
| IE871956L (en) | 1988-01-21 |
| IE59866B1 (en) | 1994-04-20 |
| NO873028L (en) | 1988-01-22 |
| NO873028D0 (en) | 1987-07-20 |
| ATE71671T1 (en) | 1992-02-15 |
| DK376587D0 (en) | 1987-07-20 |
| EP0258080B1 (en) | 1992-01-15 |
| FR2601701B1 (en) | 1992-12-31 |
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