EP0379087B1 - Aqueous detergent composition for machines processing amino resin glue - Google Patents
Aqueous detergent composition for machines processing amino resin glue Download PDFInfo
- Publication number
- EP0379087B1 EP0379087B1 EP90100618A EP90100618A EP0379087B1 EP 0379087 B1 EP0379087 B1 EP 0379087B1 EP 90100618 A EP90100618 A EP 90100618A EP 90100618 A EP90100618 A EP 90100618A EP 0379087 B1 EP0379087 B1 EP 0379087B1
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- EP
- European Patent Office
- Prior art keywords
- cleaning agent
- weight
- percent
- aqueous cleaning
- preparation
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/044—Hydroxides or bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
- C11D3/3765—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in liquid compositions
Definitions
- the present invention relates to an aqueous cleaning agent for machines processing amino resin glue, comprising an alkali metal hydroxide, a polyacrylic acid, a copolymer based on styrene and maleic anhydride and optionally further comonomers, an emulsifier and a defoamer.
- Amino resin glues are predominantly used in the wood-based panel industry. These are resins made from formaldehyde and one of the usual amino components such as urea, melamine or benzoguanamine. Since these resins were produced with a high proportion of formaldehyde until a few years ago, the cleaning of processing machines was not a problem since the resin residues were easy to disperse in water, which was probably due to the high concentration of hydrophilic methylol groups.
- the residues 2b) form the main source of pollution in the wood-based panel industry. They lead to longer machine downtimes and thereby limit capacity. Large amounts of water are required to remove them, which creates disposal problems.
- the object of the present invention was to find a cleaning agent with which the machines and containers can be quickly and thoroughly cleaned of glue residues or precipitated resins and which is effective in the smallest possible amounts.
- the wash liquor should be easy to work up.
- Suitable alkali metal hydroxides (A) are, for example, sodium hydroxide, potassium hydroxide. Sodium hydroxide is preferably used.
- Component (A) is advantageously used in a concentration, based on the solids content of the cleaning agent, of 1 to 30 percent by weight, preferably 2 to 20 percent by weight, particularly preferably 3 to 10 percent by weight.
- Polyacrylic acid and polymethacrylic acid are suitable as component (B), advantageously in an amount based on the active substance content of the cleaning agent of 1 to 30 percent by weight, preferably 2 to 20 percent by weight, particularly preferably 3 to 10 percent by weight.
- a copolymer based on styrene and maleic anhydride and optionally other comonomers is used as component (C). These copolymers are known and are described, for example, in Houben-Weyl, Methods of Organic Chemistry, 4th Edition, Vol. XIV / 1, p. 178 and. 414 and in the literature given there.
- a pure styrene-maleic anhydride copolymer can be used, but it is also possible for up to 10 percent by weight, based on the copolymer, of other comonomers to be copolymerized, such as C 1 to 4 C12-alkyl esters of acrylic and methacrylic acid, preferably C1 to C8-alkyl esters, for example methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, butyl acrylate, butyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate and lauryl acrylate; Vinyl esters of C2- C4 carboxylic acids, for example vinyl acetate and vinyl propionate, C1- to C4 dialkyl esters of maleic acid and fumaric acid, vinyl aromatics other than styrene such as
- a styrene-maleic anhydride copolymer is preferably used, which consists of about 50 mol% of styrene and about 50 mol% of maleic anhydride.
- Component (C) is advantageously used in amounts, based on the active substance content of the cleaning agent, of 10 to 80 percent by weight, preferably 30 to 70 percent by weight, particularly preferably 50 to 65 percent by weight.
- emulsifiers (D) it is possible to use all customary surface-active substances, such as addition products of ethylene oxide and / or propylene oxide with alcohols or phenols, polyethylene oxides, polyethylene oxide / polypropylene oxide copolyaddition products, C12- to C18-paraffin sulfonic acid sodium salt. Addition products of ethylene oxide and / or propylene oxide with alcohols or phenols are preferably used.
- Component (D) is advantageously used in amounts, based on the solids content of the cleaning agent, of 0.1 to 20, preferably 1 to 10, particularly preferably 2 to 5 percent by weight.
- defoamers (E) conventional defoamers based on natural oils such as vegetable oils, mineral oils, phosphates, C8 to C12 alcohols and modified silicones are used. Further defoamers are described in DE-B-2201434. Phosphates and ethylhexanoic acid ethylhexyl esters are preferably used.
- Component (E) is advantageously used in amounts, based on the active substance content of the cleaning agent, of from 0.01 to 20 percent by weight, preferably 0.1 to 10, particularly preferably 0.5 to 5 percent by weight.
- the aqueous cleaning agent contains the sum of components (A) to (E) in a concentration of 10 to 50 percent by weight, preferably 12 to 40, particularly preferably 14 to 30 percent by weight.
- the amino resin glue processing machines can be cleaned without any problems, with the resin residues being finely dispersed.
- a urea-formaldehyde resin with a molar ratio of urea to formaldehyde of 1 to 1.25 and a water solubility of 1 to 1.5.
- a melamine-urea-phenol-phenolic resin with a molar ratio of melamine to urea to phenol to formaldehyde of 1 to 1.94 to 0.11 to 4.61 and a water solubility of 1 to 0.6.
Abstract
Description
Die vorliegende Erfindung betrifft ein wäßriges Reinigungsmittel für Aminoharz-Leim verarbeitende Maschinen, enthaltend ein Alkalihydroxid, eine Polyacrylsäure, ein Copolymerisat auf Basis von Styrol und Maleinsäureanhydrid und gegebenenfalls weiteren Comonomeren, einen Emulgator und einen Entschäumer.The present invention relates to an aqueous cleaning agent for machines processing amino resin glue, comprising an alkali metal hydroxide, a polyacrylic acid, a copolymer based on styrene and maleic anhydride and optionally further comonomers, an emulsifier and a defoamer.
In der Holzwerkstoffindustrie werden vorwiegend Aminoharz-Leime verwendet. Dies sind Harze aus Formaldehyd und einer der üblichen Aminokomponenten wie Harnstoff, Melamin oder Benzoguanamin. Da diese Harze bis vor wenigen Jahren mit einem hohen Formaldehyd-Anteil hergestellt wurden, bereitete die Reinigung von Verarbeitungsmaschinen keine Probleme, da sich die Harz-Reste leicht in Wasser dispergieren ließen, was wahrscheinlich durch die hohe Konzentration an hydrophilen Methylolgruppen bedingt war.Amino resin glues are predominantly used in the wood-based panel industry. These are resins made from formaldehyde and one of the usual amino components such as urea, melamine or benzoguanamine. Since these resins were produced with a high proportion of formaldehyde until a few years ago, the cleaning of processing machines was not a problem since the resin residues were easy to disperse in water, which was probably due to the high concentration of hydrophilic methylol groups.
Die wegen der geringen Formaldehyd-Emission entwickelten formaldehydarmen Harze bilden dagegen auf den Verarbeitungsmaschinen schwer zu reinigende Verschmutzungen, die auf zwei Arten entstehen können:
- 1. Die Harze härten in saurem Medium aus und bilden hochvernetzte Moleküle. Diese lassen sich nicht mehr auflösen.
- 2. Die Harze fallen beim Verdünnen, z.B. beim Flottenansatz oder Hantieren mit Wasser aus den wäßrigen Lösungen aus und bilden zwei Phasen:
- a) eine wäßrige Phase und
- b) eine kautschukähnliche oder latexähnliche ziehende, klebrige Masse. Diese besteht zwar aus relativ kleinen Molekülen, die aber durch zwischenmolekulare Kräfte zu größeren zusammenhängenden Komplexen verbunden sind (J. Adhesives 1985, 17, 275 bis 295, T.J. Pratt).
- 1. The resins harden in an acidic medium and form highly cross-linked molecules. These can no longer be resolved.
- 2. The resins precipitate out of the aqueous solutions when they are diluted, for example when they are added to the liquor or handled with water, and form two phases:
- a) an aqueous phase and
- b) a rubber-like or latex-like pulling, sticky mass. Although this consists of relatively small molecules, they are connected by intermolecular forces to form larger, coherent complexes (J. Adhesives 1985, 17, 275 to 295, TJ Pratt).
Die Rückstände 2b) bilden die Hauptverschmutzungsquelle in der Holzwerkstoffindustrie. Sie führen zu längerem Stillstand der Maschinen und begrenzen dadurch die Kapazität. Zu ihrer Entfernung benötigt man große Mengen Wasser, was Entsorgungsprobleme bereitet.The residues 2b) form the main source of pollution in the wood-based panel industry. They lead to longer machine downtimes and thereby limit capacity. Large amounts of water are required to remove them, which creates disposal problems.
Da die Struktur der Aminoharze besonders im koagulierten Zustand bis heute unbekannt ist, vor allem die spezielle Kolloidstruktur, kann auch keine Problemlösung aufgrund chemischer Überlegungen gegeben werden. Bekannt ist, daß man hochviskose Harze mit Harnstoff wieder dünnflüssig machen kann; wenn sie aber latexähnlich geworden sind, versagt diese Methode. Auch Spül- und Scheuermittel zeigen keine große Wirkung.Since the structure of the amino resins, especially in the coagulated state, is still unknown, especially the special colloid structure, neither can Problem solving based on chemical considerations. It is known that highly viscous resins can be made thin again with urea; however, if they become latex-like, this method fails. Detergents and scouring agents also do not have a great effect.
Aufgabe der vorliegenden Erfindung war es, ein Reinigungsmittel zu finden, mit dem sich die Maschinen und Behälter von Leimresten oder ausgefallenen Harzen schnell und gründlich reinigen lassen und das in möglichst geringen Mengen wirksam ist. Dabei sollte die Waschlauge möglichst leicht aufarbeitbar sein.The object of the present invention was to find a cleaning agent with which the machines and containers can be quickly and thoroughly cleaned of glue residues or precipitated resins and which is effective in the smallest possible amounts. The wash liquor should be easy to work up.
Die vorliegende Erfindung betrifft eine wäßrige Reinigungsmittellösung für Aminoharz-Leim verarbeitende Maschinen, enthaltend
- A) ein Alkalihydroxid,
- B) Poly(meth)acrylsäure,
- C) ein Copolymerisat auf Basis von Styrol und Maleinsäureanhydrid und gegebenenfalls weiteren Comonomeren,
- D) einem Emulgator und
- E) einem Entschäumer.
- A) an alkali hydroxide,
- B) poly (meth) acrylic acid,
- C) a copolymer based on styrene and maleic anhydride and optionally further comonomers,
- D) an emulsifier and
- E) a defoamer.
Zu den Aufbaukomponenten ist im einzelnen folgendes auszuführen:
Geeignete Alkalihydroxide (A) sind beispielsweise Natriumhydroxid, Kaliumhydroxid. Bevorzugt wird Natriumhydroxid verwendet. Die Komponente (A) wird vorteilhaft in einer Konzentration, bezogen auf den Feststoffgehalt des Reinigungsmittels, von 1 bis 30 Gewichtsprozent, bevorzugt 2 bis 20 Gewichtsprozent, besonders bevorzugt 3 bis 10 Gewichtsprozent, verwendet.The following must be carried out in detail for the structural components:
Suitable alkali metal hydroxides (A) are, for example, sodium hydroxide, potassium hydroxide. Sodium hydroxide is preferably used. Component (A) is advantageously used in a concentration, based on the solids content of the cleaning agent, of 1 to 30 percent by weight, preferably 2 to 20 percent by weight, particularly preferably 3 to 10 percent by weight.
Als Komponente (B) ist Polyacrylsäure und Polymethacrylsäure geeignet, vorteilhaft in einer Menge, bezogen auf den Wirkstoffgehalt des Reinigungsmittels von 1 bis 30 Gewichtsprozent, bevorzugt 2 bis 20 Gewichtsprozent, besonders bevorzugt 3 bis 10 Gewichtsprozent.Polyacrylic acid and polymethacrylic acid are suitable as component (B), advantageously in an amount based on the active substance content of the cleaning agent of 1 to 30 percent by weight, preferably 2 to 20 percent by weight, particularly preferably 3 to 10 percent by weight.
Als Komponente (C) wird ein Copolymerisat auf Basis von Styrol und Maleinsäureanhydrid und gegebenenfalls weiteren Comonomeren verwendet. Diese Copolymerisate sind bekannt und beispielsweise in Houben-Weyl, Methoden der organischen Chemie, 4. Aufl., Bd. XIV/1, S. 178 u. 414 sowie in der dort angegebenen Literatur beschrieben.A copolymer based on styrene and maleic anhydride and optionally other comonomers is used as component (C). These copolymers are known and are described, for example, in Houben-Weyl, Methods of Organic Chemistry, 4th Edition, Vol. XIV / 1, p. 178 and. 414 and in the literature given there.
Es kann ein reines Styrol-Maleinsäureanhydrid-Copolymer verwendet werden, es können aber auch bis zu 10 Gewichtsprozent, bezogen auf das Copolymerisat, weitere Comonomere mit einpolymerisiert sein, wie C₁- bis C₁₂-Alkylester der Acrylsäure und Methacrylsäure, bevorzugt C₁- bis C₈-Alkylester z.B. Methylacrylat, Methylmethacrylat, Ethylacrylat, Ethylmethacrylat, Propylacrylat, Propylmethacrylat, Butylacrylat, Butylmethacrylat, 2-Ethylhexylacrylat, 2-Ethylhexylmethacrylat, Laurylacrylat und Laurylmethacrylat; Vinylester von C₂- C₄-Carbonsäuren, z.B. Vinylacetat und Vinylpropionat, C₁- bis C₄-Dialkylester der Maleinsäure und Fumarsäure, Vinylaromaten außer Styrol wie α-Methylstyrol und Vinyltoluol; Acrylnitril, Methacrylnitril; Acrylamid, Methacrylamid sowie Vinylether mit 3 bis 10 Kohlenstoffatomen, Vinylhalogenide wie Vinylchlorid und Vinylidenchlorid; mehrfach olefinisch ungesättigte Verbindungen wie Butadien und Isopren sowie Gemische der obengenannten Monomeren, soweit sie miteinander copolymerisierbar sind. Bevorzugte Comonomere sind Acrylsäureester, Methacrylsäureester, Acrylnitril und Methacrylnitril.A pure styrene-maleic anhydride copolymer can be used, but it is also possible for up to 10 percent by weight, based on the copolymer, of other comonomers to be copolymerized, such as C 1 to 4 C₁₂-alkyl esters of acrylic and methacrylic acid, preferably C₁ to C₈-alkyl esters, for example methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, butyl acrylate, butyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate and lauryl acrylate; Vinyl esters of C₂- C₄ carboxylic acids, for example vinyl acetate and vinyl propionate, C₁- to C₄ dialkyl esters of maleic acid and fumaric acid, vinyl aromatics other than styrene such as α-methylstyrene and vinyltoluene; Acrylonitrile, methacrylonitrile; Acrylamide, methacrylamide and vinyl ethers with 3 to 10 carbon atoms, vinyl halides such as vinyl chloride and vinylidene chloride; polyolefinically unsaturated compounds such as butadiene and isoprene and mixtures of the above-mentioned monomers, provided that they are copolymerizable with one another. Preferred comonomers are acrylic acid esters, methacrylic acid esters, acrylonitrile and methacrylonitrile.
Bevorzugt wird ein Styrol-Maleinsäureanhydrid-Copolymerisat verwendet, das aus etwa 50 Mol% Styrol und etwa 50 Mol% Maleinsäureanhydrid besteht. Die Komponente (C) wird vorteilhaft in Mengen, bezogen auf den Wirkstoffgehalt des Reinigungsmittels von 10 bis 80 Gewichtsprozent, bevorzugt 30 bis 70 Gewichtsprozent, besonders bevorzugt 50 bis 65 Gewichtsprozent verwendet.A styrene-maleic anhydride copolymer is preferably used, which consists of about 50 mol% of styrene and about 50 mol% of maleic anhydride. Component (C) is advantageously used in amounts, based on the active substance content of the cleaning agent, of 10 to 80 percent by weight, preferably 30 to 70 percent by weight, particularly preferably 50 to 65 percent by weight.
Als Emulgatoren (D) können alle üblichen oberflächenaktiven Stoffe verwendet werden wie Additionsprodukte von Äthylenoxid und/oder Propylenoxid an Alkohole oder Phenole, Polyethylenoxide, Polyethylenoxid/Polypropylenoxid-Copolyadditionsprodukte, C₁₂- bis C₁₈-Paraffinsulfonsäure-Na-salz. Bevorzugt werden Additionsprodukte von Ethylenoxid und/oder Propylenoxid an Alkohole oder Phenole verwendet. Die Komponente (D) wird vorteilhaft in Mengen, bezogen auf den Feststoffgehalt des Reinigungsmittels, von 0,1 bis 20, bevorzugt 1 bis 10, besonders bevorzugt 2 bis 5 Gewichtsprozent verwendet.As emulsifiers (D) it is possible to use all customary surface-active substances, such as addition products of ethylene oxide and / or propylene oxide with alcohols or phenols, polyethylene oxides, polyethylene oxide / polypropylene oxide copolyaddition products, C₁₂- to C₁₈-paraffin sulfonic acid sodium salt. Addition products of ethylene oxide and / or propylene oxide with alcohols or phenols are preferably used. Component (D) is advantageously used in amounts, based on the solids content of the cleaning agent, of 0.1 to 20, preferably 1 to 10, particularly preferably 2 to 5 percent by weight.
Als Entschäumer (E) werden übliche Entschäumer auf Basis von natürlichen Ölen wie Pflanzenölen, Mineralölen, Phosphaten, C₈- bis C₁₂-Alkoholen und modifizierten Silikonen verwendet. Weitere Entschäumer sind in der DE-B-2201434 beschrieben. Bevorzugt werden Phosphate und Ethylhexansäureethylhexylester verwendet.As defoamers (E), conventional defoamers based on natural oils such as vegetable oils, mineral oils, phosphates, C₈ to C₁₂ alcohols and modified silicones are used. Further defoamers are described in DE-B-2201434. Phosphates and ethylhexanoic acid ethylhexyl esters are preferably used.
Die Komponente (E) wird vorteilhaft in Mengen, bezogen auf den Wirkstoffgehalt des Reinigungsmittels, von 0,01 bis 20 Gewichtsprozent, bevorzugt 0,1 bis 10, besonders bevorzugt 0,5 bis 5 Gewichtsprozent verwendet.Component (E) is advantageously used in amounts, based on the active substance content of the cleaning agent, of from 0.01 to 20 percent by weight, preferably 0.1 to 10, particularly preferably 0.5 to 5 percent by weight.
Zur Herstellung der Reinigungsmittellösung können die Komponenten (A) bis (E) in beliebiger Reihenfolge in Wasser gelöst bzw. dispergiert werden. Das wäßrige Reinigungsmittel enthält die Summe der Komponenten (A) bis (E) in einer Konzentration von 10 bis 50 Gewichtsprozent, bevorzugt 12 bis 40, besonders bevorzugt 14 bis 30 Gewichtsprozent.To produce the cleaning agent solution, components (A) to (E) dissolved or dispersed in water in any order. The aqueous cleaning agent contains the sum of components (A) to (E) in a concentration of 10 to 50 percent by weight, preferably 12 to 40, particularly preferably 14 to 30 percent by weight.
Mit diesen wäßrigen Reinigungsmitteln lassen sich die Aminoharz-Leime verarbeitenden Maschinen problemlos reinigen, wobei die Harz-Rückstände fein dispergiert werden. In einem Absetzbecken sedimentiert das Harz und kann abgetrennt und entsorgt werden.With these aqueous cleaning agents, the amino resin glue processing machines can be cleaned without any problems, with the resin residues being finely dispersed. The resin sediments in a sedimentation tank and can be separated and disposed of.
In 84,4 g Wasser wurden
3 g Natriumhydroxid,
2 g Polyacrylsäure,
10 g eines Styrol-Maleinsäureanhydrid-Copolymerisates mit 50 Mol% Styrol und 50 Mol% Maleinsäureanhydrid,
0,5 g Octylphenolethoxilat,
0,1 g Triisobutylphosphat gelöst.In 84.4 g of water were
3 g sodium hydroxide,
2 g polyacrylic acid,
10 g of a styrene / maleic anhydride copolymer with 50 mol% of styrene and 50 mol% of maleic anhydride,
0.5 g octylphenol ethoxylate,
0.1 g of triisobutyl phosphate dissolved.
In 80,4 g Wasser wurden
5 g Natriumhydroxid,
6 g Polyacrylsäure,
8 g Styrol-Maleinsäurecopolymerisat (je 50 Mol%),
0,5 g Octylphenolethoxilat,
0,1 g Triisobutylphosphat gelöst.In 80.4 g of water were
5 g sodium hydroxide,
6 g polyacrylic acid,
8 g styrene-maleic acid copolymer (50 mol% each),
0.5 g octylphenol ethoxylate,
0.1 g of triisobutyl phosphate dissolved.
Mit diesen Lösungen wurde versucht, Flächen zu reinigen, die mit Rückständen aus folgenden Harzen verschmutzt waren:These solutions tried to clean surfaces that were contaminated with residues from the following resins:
Ein Harnstoff-Formaldehyd-Harz mit einem Molverhältnis Harnstoff zu Formaldehyd von 1 zu 1,25 und einer Wasserlöslichkeit von 1 zu 1,5.A urea-formaldehyde resin with a molar ratio of urea to formaldehyde of 1 to 1.25 and a water solubility of 1 to 1.5.
Ein Melamin-Harnstoff-Phenol-Phenolharz mit einem Molverhältnis Melamin zu Harnstoff zu Phenol zu Formaldehyd von 1 zu 1,94 zu 0,11 zu 4,61 und einer Wasserlöslichkeit von 1 zu 0,6.A melamine-urea-phenol-phenolic resin with a molar ratio of melamine to urea to phenol to formaldehyde of 1 to 1.94 to 0.11 to 4.61 and a water solubility of 1 to 0.6.
Die Ergebnisse der Reinigungsversuche sind in der Tabelle aufgeführt.
Claims (7)
- A process for the preparation of an aqueous cleaning agent for machines processing amino resin glue, wherein the componentsA) an alkali metal hydroxide,B) poly(meth)acrylic acid,C) a copolymer based on styrene and maleic anhydride and, if required, further comonomers,D) an emulsifier andE) an antifoamare mixed.
- A process for the preparation of an aqueous cleaning agent as claimed in claim 1, wherein the componentsA) from 1 to 30 percent by weight of an alkali metal hydroxide,B) from 1 to 30 percent by weight of a poly(meth)acrylic acid,C) from 10 to 80 percent by weight of a copolymer based on styrene and maleic anhydride and, if required, further comonomers,D) from 0.1 to 20 percent by weight of an emulsifier andE) from 0.01 to 20 percent by weight of an antifoam,the stated amounts of components (A), (B), (C), (D) and (E) summing to 100 percent by weight and being based on the active ingredient content of the aqueous cleaning agent, are mixed.
- A process for the preparation of an aqueous cleaning agent as claimed in claim 1 or 2, wherein a styrene/maleic anhydride copolymer is used as component (C).
- A process for the preparation of an aqueous cleaning agent as claimed in any of claims 1 to 3, wherein ethoxylated alcohols or phenols are used as emulsifiers (D).
- A process for the preparation of an aqueous cleaning agent as claimed in any of claims 1 to 4, wherein triisobutyl phosphate is used as antifoam (E).
- A process for the preparation of an aqueous cleaning agent as claimed in any of claims 1 to 5, wherein the active ingredient content is from 10 to 50% by weight, based on the total amount of cleaning agent, the active ingredient content corresponding to the total amount of components (A), (B), (C), (D) and (E).
- A method for cleaning machines processing amino resin glue, wherein an aqueous cleaning agent as claimed in any of claims 1 to 6 is used.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3901328A DE3901328A1 (en) | 1989-01-18 | 1989-01-18 | AQUEOUS CLEANING AGENT FOR AMINO RESIN GLUE PROCESSING MACHINES |
| DE3901328 | 1989-01-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0379087A2 EP0379087A2 (en) | 1990-07-25 |
| EP0379087A3 EP0379087A3 (en) | 1991-04-03 |
| EP0379087B1 true EP0379087B1 (en) | 1995-05-31 |
Family
ID=6372311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90100618A Expired - Lifetime EP0379087B1 (en) | 1989-01-18 | 1990-01-12 | Aqueous detergent composition for machines processing amino resin glue |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0379087B1 (en) |
| AT (1) | ATE123299T1 (en) |
| DE (2) | DE3901328A1 (en) |
| DK (1) | DK0379087T3 (en) |
| ES (1) | ES2072317T3 (en) |
| PT (1) | PT92883A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4012798C1 (en) * | 1990-04-21 | 1991-08-14 | Bayer Ag, 5090 Leverkusen, De | |
| SE500522C2 (en) * | 1992-01-30 | 1994-07-11 | Casco Nobel Ab | Use of polyethyleneimine or imines for cleaning equipment from amino resins |
| US5914365A (en) * | 1997-02-06 | 1999-06-22 | Georgia-Pacific Resins, Inc. | Modified urea-formaldehyde binder for making fiber mats |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3625854A (en) * | 1968-05-10 | 1971-12-07 | Sinclair Research Inc | Oven-cleaning composition |
| US3976501A (en) * | 1974-09-18 | 1976-08-24 | Blue Maurice R | Process for cleaning and polishing a floor |
| PH17613A (en) * | 1981-05-29 | 1984-10-05 | Unilever Nv | General-purpose cleaning composition |
| US4869934A (en) * | 1988-09-16 | 1989-09-26 | Sterling Drug Inc. | Floor polishing and coating composition |
-
1989
- 1989-01-18 DE DE3901328A patent/DE3901328A1/en not_active Withdrawn
-
1990
- 1990-01-12 DE DE59009165T patent/DE59009165D1/en not_active Expired - Lifetime
- 1990-01-12 DK DK90100618.9T patent/DK0379087T3/en active
- 1990-01-12 AT AT90100618T patent/ATE123299T1/en active
- 1990-01-12 EP EP90100618A patent/EP0379087B1/en not_active Expired - Lifetime
- 1990-01-12 ES ES90100618T patent/ES2072317T3/en not_active Expired - Lifetime
- 1990-01-17 PT PT92883A patent/PT92883A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DE59009165D1 (en) | 1995-07-06 |
| PT92883A (en) | 1990-07-31 |
| DE3901328A1 (en) | 1990-07-19 |
| ATE123299T1 (en) | 1995-06-15 |
| EP0379087A3 (en) | 1991-04-03 |
| DK0379087T3 (en) | 1995-07-24 |
| ES2072317T3 (en) | 1995-07-16 |
| EP0379087A2 (en) | 1990-07-25 |
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