DE935921C - Organic paint strippers - Google Patents

Organic paint strippers

Info

Publication number
DE935921C
DE935921C DEB25900A DEB0025900A DE935921C DE 935921 C DE935921 C DE 935921C DE B25900 A DEB25900 A DE B25900A DE B0025900 A DEB0025900 A DE B0025900A DE 935921 C DE935921 C DE 935921C
Authority
DE
Germany
Prior art keywords
parts
paint
organic paint
paint strippers
ethers
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
DEB25900A
Other languages
German (de)
Inventor
Karl Dr Merkel
Guido Dr Schultze
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB25900A priority Critical patent/DE935921C/en
Application granted granted Critical
Publication of DE935921C publication Critical patent/DE935921C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D9/00Chemical paint or ink removers
    • C09D9/005Chemical paint or ink removers containing organic solvents

Description

Organische Abbeizmittel Es ist bekannt, daß man eine anhaltende Wirksamkeit organischer Abbeizmittel erreicht, wenn man ihnen Paraffin zusetzt, wodurch ein rasches Verdunsten flüchtiger Bestandteile vermieden wird. Dieses Verfahren hat aber den Nachteil, daß auf der gebeizten Fläche Spuren von Paraffin zurückbleiben, die nur durch sorgfältiges Nachwaschen mit geeigneten organischen Lösungsmitteln, wie Benzol oder Chlorkohlenwasserstoffen, entfernt werden können. Tauscht man Paraffin durch Rückstände der Paraffinoxydation aus, so kann man diesen Nachteil vermeiden. Jedoch ist zum Austausch des Paraffins ein Mehifaches des Rückstandes der Paraffinoxydation notwendig, wodurch die Konzentration an chemisch wirksamen Abbeizmittelbestandteilen zurückgedrängt wird. Es wurde nun gefunden, daß sich ohne zu starke Verdünnung die Wirksamkeit organischer Abbeizmittel verbessern läßt, wenn man ihnen im Benzolkern durch mindestens einen niedermolekularen Alkylrest, der auch Halogen enthalten kann, substituierte Benzylalkohole, deren Äther oder Halogenwasserstoffsäureester zusetzt. Auch Gemische derartiger Benzylverbindungen sind geeignet.Organic paint strippers are known to have lasting effectiveness organic paint stripper can be achieved if paraffin is added to them, creating a rapid evaporation of volatile components is avoided. This procedure has but the disadvantage that traces of paraffin remain on the stained surface, which can only be achieved by careful rewashing with suitable organic solvents, such as benzene or chlorinated hydrocarbons, can be removed. If you exchange paraffin due to residues of the oxidation of paraffin, this disadvantage can be avoided. However, to replace the paraffin there is a multiple of the residue from the paraffin oxidation necessary, reducing the concentration of chemically active paint remover components is pushed back. It has now been found that without excessive dilution, the The effectiveness of organic paint strippers can be improved if you put them in the benzene nucleus by at least one low molecular weight alkyl radical, which can also contain halogen, substituted benzyl alcohols whose ethers or hydrohalic acid esters are added. Mixtures of such benzyl compounds are also suitable.

Geeignete Stoffe dieser Art sind z. B. Methyl-, Äthyl-, Propyl-, i-Propyl-benzylalkohol, Chlormethyl-oder Chloräthylbenzylalkohol, Methylbenzylchlorid oder Chlormethylbenzylchlorid. Auch die Äther der genannten Alkohole allein oder in Mischung miteinander oder mit den Alkoholen sind geeignet. Beispiele geeigneter Äther sind Di-(äthylbenzyl)-äther, Di - (chlormethylbenzyl) - äther, Chlormethylbenzyläthyläther oder -äthylbenzyläther.Suitable substances of this type are, for. B. methyl, ethyl, propyl, i-propyl benzyl alcohol, Chloromethyl or chloroethylbenzyl alcohol, methylbenzyl chloride or chloromethylbenzyl chloride. Also the ethers of the alcohols mentioned alone or in a mixture with one another or with the alcohols are suitable. Examples of suitable ethers are di (ethylbenzyl) ethers, Tuesday - (chloromethylbenzyl) ether, chloromethylbenzyl ethyl ether or ethyl benzyl ether.

Die substituierten Benzylchloride sind z. B. durch Umsetzen mit Formaldehyd und Chlorwasserstoff zugänglich. Man setzt diese Alkylbenzylverbindungen den Abbeizmitteln in Mengen von 2 bis 6o Gewichtsprozent, vorteilhaft von 5 bis 30 °/o, zu. Die Abbeizmittel können außerdem noch die üblichen Verdickungsmittel, wie Naphthalin, Polyvinyläther oder andere Hochpolymere, sowie leichtflüchtige Lösungsmittel enthalten.The substituted benzyl chlorides are, for. B. by reacting with formaldehyde and hydrogen chloride accessible. These alkylbenzyl compounds are used in paint strippers in amounts of 2 to 60 percent by weight, advantageously from 5 to 30%. The paint remover can also use the usual thickeners such as naphthalene and polyvinyl ether or other high polymers, as well as volatile solvents.

Es sind zwar bereits Lackabbeizmittel bekannt, die unsubstituierten Benzylalkohol oder Arylglykoläther enthalten. Überraschenderweise bewirkt jedoch der Gehalt der erfindungsgemäßen Stoffe gegenüber den bisher verwendeten bei langanhaltender Wirksamkeit und großer Tiefenwirkung ein wesentlich rascheres Anquellen und stärkeres Hochziehen der Lackanstriche.There are already paint strippers known that are unsubstituted Contain benzyl alcohol or aryl glycol ether. Surprisingly, however, causes the content of the substances according to the invention compared to those previously used with longer lasting Effectiveness and great depth effect a much faster swelling and stronger Pulling up the paint coats.

Die in den Beispielen angegebenen Teile sind Gewichtsteile. Beispiel = Ein Abbeizmittel, bestehend aus 5 Teilen Polyvinylmethyläther, 5 Teilen Naphthalin, q.o Teilen Methylenchlorid, 2o Teilen p-Methylbenzylall-,ohol, xoTeilen Di-(p-äthylbenzyl)-äther, io Teilen o-(2-Chloräthyl)-benzylchlorid und io Teilen Toluol wird sowohl auf einen alten Ölanstrich als auch auf einen Alkydharzanstrich aufgetragen. Das Abbeizmittel ist nach mehreren Tagen noch nicht ausgetrocknet. Der Anstrich läßt sich mit einem Spachtelmesser leicht entfernen.The parts given in the examples are parts by weight. example = A paint remover consisting of 5 parts of polyvinyl methyl ether, 5 parts of naphthalene, q.o parts of methylene chloride, 2o parts of p-methylbenzylall-, ohol, xo parts of di (p-ethylbenzyl) ether, 10 parts of o- (2-chloroethyl) benzyl chloride and 10 parts of toluene is both on one old oil paint as well as applied to an alkyd resin paint. The paint remover has not dried out after several days. The painting can be done with a Easily remove the spatula knife.

Beispiel 2 Ein aus 2 Teilen hochviskoser acetonlöslicher Acetylcellulose, bestehend@aus 4 Teilen Butin-(2)-diol-(z, 4), 4 Teilen Phthalsäure-dipropargylester, 5o Teilen Methylenchlorid, 12 Teilen Methanol, 5 Teilen Benzol, 3 Teilen eines technischen Gemisches von Di-(o- und p-äthylbenzyl)-äther, io Teilen eines technischen Gemisches von o- und p-Methylbenzylalkohol und io Teilen p-Äthylbenzylalkohol bestehendes Abbeizmittel wird auf einen Kombinationslack aus Chlorkautschuk und Alkydharz aufgetragen. Schon nach kurzer Zeit tritt eine starke Quellung des Anstrichfilms. ein; dieser ist auch nach 3 Tagen noch weich und -läßt sich leicht mit einem Spachtelmesser entfernen.Example 2 An acetyl cellulose made from 2 parts of highly viscous acetone-soluble, consisting of 4 parts of butyne- (2) -diol- (z, 4), 4 parts of phthalic acid dipropargyl ester, 5o parts of methylene chloride, 12 parts of methanol, 5 parts of benzene, 3 parts of a technical Mixture of di- (o- and p-ethylbenzyl) ethers, io parts of a technical mixture of o- and p-methylbenzyl alcohol and 10 parts of p-ethylbenzyl alcohol Paint remover is applied to a combination paint made of chlorinated rubber and alkyd resin. After a short time, there is strong swelling of the paint film. a; this is still soft after 3 days and can be easily removed with a spatula remove.

Claims (1)

PATENTANSPRUCH: Organische Abbeizmittel, gekennzeichnet durch einen Gehalt an im Benzolkern durch mindestens einen niedermolekularen Allhylrest, der auch Halogen enthalten kann, substituierten Benzylalkoholen, deren Äthern mit einwertigen Alkoholen, deren Halogenwasserstoffsäureestern oder deren Gemischen. Angezogene Druckschriften: Deutsche Patentschriften Nr. 542 335. 568 2=8; französische Patentschrift Nr. 968 gor.PATENT CLAIM: Organic paint strippers, characterized by a Content of in the benzene nucleus by at least one low molecular weight alkyl radical, the may also contain halogen, substituted benzyl alcohols whose ethers are monohydric Alcohols, their hydrohalic acid esters or their mixtures. Dressed Publications: German Patent Specifications No. 542 335, 568 2 = 8; French patent specification No. 968 gor.
DEB25900A 1953-06-06 1953-06-06 Organic paint strippers Expired DE935921C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB25900A DE935921C (en) 1953-06-06 1953-06-06 Organic paint strippers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB25900A DE935921C (en) 1953-06-06 1953-06-06 Organic paint strippers

Publications (1)

Publication Number Publication Date
DE935921C true DE935921C (en) 1955-12-01

Family

ID=6961882

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB25900A Expired DE935921C (en) 1953-06-06 1953-06-06 Organic paint strippers

Country Status (1)

Country Link
DE (1) DE935921C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276849B (en) * 1966-01-20 1968-09-05 Deutsche Solvay-Werke, Gesellschaft mit beschränkter Hsitung, 5650 Solingen-Ohligs Paint remover
RU2715205C1 (en) * 2019-10-17 2020-02-25 ГОДЗОЕВ Олег Александрович Composition for dissolution / removal of hardness salts
RU2715204C1 (en) * 2019-10-17 2020-02-25 ГОДЗОЕВ Олег Александрович Composition for dissolution / removal of corrosive deposits
RU2715647C1 (en) * 2019-10-17 2020-03-02 ГОДЗОЕВ Олег Александрович Composition for removal of paint and varnish and primer coatings

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE542335C (en) * 1927-02-26 1932-01-23 Carbide & Carbon Chem Corp Paint stripper
DE568218C (en) * 1927-02-26 1933-01-20 Carbide & Carbon Chem Corp Paint stripper
FR968201A (en) * 1948-06-25 1950-11-22 Product for the removal of used paints and varnishes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE542335C (en) * 1927-02-26 1932-01-23 Carbide & Carbon Chem Corp Paint stripper
DE568218C (en) * 1927-02-26 1933-01-20 Carbide & Carbon Chem Corp Paint stripper
FR968201A (en) * 1948-06-25 1950-11-22 Product for the removal of used paints and varnishes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276849B (en) * 1966-01-20 1968-09-05 Deutsche Solvay-Werke, Gesellschaft mit beschränkter Hsitung, 5650 Solingen-Ohligs Paint remover
RU2715205C1 (en) * 2019-10-17 2020-02-25 ГОДЗОЕВ Олег Александрович Composition for dissolution / removal of hardness salts
RU2715204C1 (en) * 2019-10-17 2020-02-25 ГОДЗОЕВ Олег Александрович Composition for dissolution / removal of corrosive deposits
RU2715647C1 (en) * 2019-10-17 2020-03-02 ГОДЗОЕВ Олег Александрович Composition for removal of paint and varnish and primer coatings
WO2021076007A1 (en) * 2019-10-17 2021-04-22 ГОДЗОЕВ, Олег Александрович Composition for removing paint, varnish and primer coatings

Similar Documents

Publication Publication Date Title
DE1200795B (en) Process for the production of pentaerythritol fatty acid esters, which are preferably used as plasticizers for electrical insulating materials
DE935921C (en) Organic paint strippers
DE1468464A1 (en) Stabilization of methyl chloroform
DE2307387C3 (en) Use of a cyclopentadienyl iron compound as a smoke suppressant additive in polyvinyl chloride or polyurethane
WO2009068639A1 (en) Solvent for gross density determination and extraction analysis of asphalt
DE1261314B (en) Stabilizing and softening agent for polyvinyl chloride
DE10236512A1 (en) paint stripper
EP0076471B1 (en) Stabilisation of polyether or polyester moulding compounds against premature reaction
DE612583C (en) Gelatinizing and softening agents for cellulose derivatives
DE506636C (en) Process for the preparation of montan wax-like products
DE821984C (en) Paint stripper
DE594580C (en) Gelatinizing and softening agents for cellulose derivatives
DE599580C (en) Process for the production of esters of high-quality ether alcohols
DE652803C (en) Process for producing flame-retardant paints
DE867912C (en) Process for the production of plastic masses
DE1292408B (en) Antistatic rendering of polymers
DE868347C (en) Process for the production of plastic compositions from vinyl halide polymers
DE637336C (en) Solvent mixture for mixed cellulose esters
DE1593431A1 (en) Stabilizing ß-lactones
DE564833C (en) Process for the production of solutions of cellulose esters or ethers in so-called wood spirit oils or their fractions
DE542770C (en) Paint remover
DE1292409B (en) Antistatic rendering of polymers
AT66526B (en) Process for the production of lacquers from cellulose esters.
DE2214597A1 (en) Agent based on 1,1,1-trichlorethylene for cleaning metals
DE971238C (en) Process for the decomposition of mixtures of oxygen-containing organic compounds from carbohydrate hydrogenation and oxo synthesis