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WO1993020158A1 - Utilisation de glycolethers de polyethylene d'alkyle a groupes terminaux fermes en tant qu'additif antimousse de coagulants - Google Patents

Utilisation de glycolethers de polyethylene d'alkyle a groupes terminaux fermes en tant qu'additif antimousse de coagulants Download PDF

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Publication number
WO1993020158A1
WO1993020158A1 PCT/EP1993/000730 EP9300730W WO9320158A1 WO 1993020158 A1 WO1993020158 A1 WO 1993020158A1 EP 9300730 W EP9300730 W EP 9300730W WO 9320158 A1 WO9320158 A1 WO 9320158A1
Authority
WO
WIPO (PCT)
Prior art keywords
straight
atoms
glycol ethers
use according
alkyl radical
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.)
Ceased
Application number
PCT/EP1993/000730
Other languages
German (de)
English (en)
Inventor
Jürgen Geke
Ragnar Margeit
Wolfgang Poly
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of WO1993020158A1 publication Critical patent/WO1993020158A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/71—Paint detackifiers or coagulants, e.g. for the treatment of oversprays in paint spraying installations

Definitions

  • the invention relates to the use of end-capped alkyl polyethylene glycol ethers as a foam-inhibiting additive to coagulating agents for paints, waxes and other coating agents in circulating water for paint spray booths.
  • Antifoams are almost of equal importance to the importance of coagulants. Modern lacquers and process technologies make the use of antifoam agents practically imperative. Foam in painting systems and disposal systems hindered or usually prevents the denaturing of the "paint overspray". At the same time, the paint mist suction is disturbed. In extreme cases, the functionality of the entire system is disturbed, which ultimately leads to a production shutdown.
  • DE-A-36 36 086 discloses fatty acid esters of polyglycerol polyglycol ethers which can be obtained by reacting polyglycerols with ethylene oxide and propylene oxide in a manner known per se and esterifying the alkylene oxide addition product obtained with fatty acid, where 2 to 15 moles of ethylene oxide, 10 to 60 moles of propylene oxide and 1 to 3 moles of fatty acid per mole of hydroxyl groups present in the polyglycerol are used, which as such or in the form of their preparations are used as highly effective defoamers in numerous fields of application, in particular in Food industry and in chemical process engineering. Further areas of application are industrial cleaners and cleaning processes.
  • US-A-4 090 001 relates to aqueous basic coagulants, in particular for the spraying process in the coating of motor vehicles, which contain as active ingredients an effective amount (1 to 3 g / 1) of a fatty alcohol-ethylene oxide-propylene oxide adduct which also has a defoaming effect.
  • DE-A-39 01 045 describes an antifoam containing 33 to 89% by weight of a Ci6-22 ⁇ ' : ettic acid ( ⁇ ono " D' ' s " P en'ta ) etno ⁇ yl ats ° d er - (mono- bis-penta) propoxylate and 67 to 11 wt .-% of a block polymer of propylene oxide with ethylene oxide with a molecular weight of about 3800, a cloud point (calculated as 10% aqueous Solution) from 9 ° C to 13 ° C and an HLB value of about 1, and its use.
  • Conventional anti-foam agents1 for circulating water are not always optimal in their anti-foam effect depending on the application.
  • these antifoams often lead to disruptive bonds in the coagulate to be produced, especially at higher doses, or lead to thickening effects, for example due to carboxylic acids, which are caused by the slight saponification of e.g. Oleic acid esters are formed.
  • an antifoam which not only has an excellent antifoam action, but also does not adversely affect the coagulant in its coagulation properties.
  • the invention relates to the use of end-capped alkyl polyethylene glycol ethers of the general formulas (I) and (II)
  • R j straight-chain or branched alkyl radical with 10 C atoms
  • R 2 straight-chain alkyl radical with 4 C atoms
  • R3 straight-chain or branched alkyl radical with 20 C atoms, individually or in a mixture as a foam-inhibiting additive to coagulating agents for paints , Waxes and other confinement agents in circulating water for paint spray booths.
  • alkyl polyethylene glycol ethers which have a straight-chain alkyl radical having 10 carbon atoms as the radical R 1 in the general formula (I) and one as the radical R 3 in the general formula (II) have branched alkyl radicals with 20 carbon atoms, in particular a 2-0ctyl-dodecyl radical.
  • alkyl polyethylene glycol ethers With regard to the number of ethylene oxide units in these alkyl polyethylene glycol ethers, it should be mentioned that the values given - 5.4 according to formula (I) and 3.2 according to formula (II) - are statistical mean values, these mean values being the same Relate both to a broad homolog distribution and to a narrow homolog distribution, for example according to DE-A-38 43 713.
  • the use of alkyl polyethylene glycol ethers according to the general formulas (I) and / or (II) with a narrow homolog distribution with respect to the ethylene oxide units is preferred for the purposes of the present invention, since such compounds have an even better foam-inhibiting activity.
  • the alkylpolyethylene glycol ethers mentioned can be used either individually or as a mixture, ie those of the type of the formula (I) together with those of the type of the formula (II), for the intended use. If a mixture of the two alkyl polyethylene glycol ethers is used, there are in principle no restrictions with regard to the mixing ratio. According to the invention, however, a mixing ratio in the range from 10: 1 to 1:10, in particular 1: 1, is preferred.
  • alkylpolyethylene glycol ethers to be used according to the invention can be added to the circulating waters both together with the coagulants and separately therefrom.
  • the end group-capped alkyl polyethylene glycol ethers can also be used in a mixture with other customary foam-inhibiting active substances. All antifoam agents known in the prior art are suitable for this purpose, in particular those mentioned in the introduction.
  • the ratio of the end group capped alkyl polyethylene glycol ether to the other foam-inhibiting active ingredients is 1: 1 to 1:10.
  • the alkylpolyethylene glycol ethers mentioned are the circulating water in wet separators of spray-painting systems in a continuous metering manner in amounts of 1 to 20 ml per ⁇ .3 bath volume and hour of operating time and in batchwise metering in amounts of 5 to 50 ml per ⁇ . 3 bath volume and hour of operating time.
  • the anti-foaming agents according to the invention can be dosed both as a concentrate and in dilute aqueous solution. This represents a further advantage over the prior art, since the anti-foaming agents according to the invention can be diluted with water in any ratio. If the metering is carried out in dilute form, a correspondingly higher metering is to be carried out, which is generally to be empirically adjusted to the optimum value, based on the respective conditions.
  • test apparatus consisted of a vertical 2 1 measuring cylinder which had an outlet connection at the lower end.
  • a hose connection led from this outlet connection to a pump (centrifugal pump from Eheim, Germany, output: 20 1 / min);
  • Another hose connection led from this pump to the upper edge of the measuring cylinder.
  • the additives (a) and (b) were mixed using an ultra-turax mixer (type T25, from Jahnke & Kunkel, Germany) at 8,000 rpm for 1 minute. Addition (c) was then added, the solution was mixed for 1 min at 500 rpm using a row stirrer (type RW20DZM, from Jahnke & Kunkel, Germany) and added to the test apparatus.
  • an ultra-turax mixer type T25, from Jahnke & Kunkel, Germany
  • Addition (c) was then added, the solution was mixed for 1 min at 500 rpm using a row stirrer (type RW20DZM, from Jahnke & Kunkel, Germany) and added to the test apparatus.
  • Test varnish Hydro basecoat, platinum, L 1120 223, commercial product from BASF AG, Germany (table)
  • Dosage of the test varnish 10 g / 1.
  • alkyl polyethylene glycol ethers The following were used as alkyl polyethylene glycol ethers:

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

On utilise des glycoléthers de polyéthylène d'alkyle répondant aux formules générales (I): R1-O-(CH2CH2O)5,4-R2 et (II): R3-O-(CH2CH2O)3,2-R2 dans lesquelles R1 désigne un reste alkyle à chaîne droite ou ramifiée ayant 10 atomes de carbone; R2 désigne un reste alkyle à chaîne droite ayant 4 atomes de carbone; et R3 désigne un résidu alkyle à chaîne droite ou ramifiée ayant 20 atomes de carbone, seuls ou mélangés, en tant qu'additif antimousse de coagulants pour peintures, cires et autres enduits dans les eaux en circulation dans des cabines de peinture au pistolet.
PCT/EP1993/000730 1992-04-03 1993-03-25 Utilisation de glycolethers de polyethylene d'alkyle a groupes terminaux fermes en tant qu'additif antimousse de coagulants Ceased WO1993020158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4211207.9 1992-04-03
DE4211207A DE4211207A1 (de) 1992-04-03 1992-04-03 Verwendung von endgruppenverschlossenen Alkylpolyethylenglykolethern als schauminhibierender Zusatz zu Koagulierungsmitteln

Publications (1)

Publication Number Publication Date
WO1993020158A1 true WO1993020158A1 (fr) 1993-10-14

Family

ID=6455989

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/000730 Ceased WO1993020158A1 (fr) 1992-04-03 1993-03-25 Utilisation de glycolethers de polyethylene d'alkyle a groupes terminaux fermes en tant qu'additif antimousse de coagulants

Country Status (2)

Country Link
DE (1) DE4211207A1 (fr)
WO (1) WO1993020158A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004024947B4 (de) * 2004-05-21 2006-12-07 Cognis Ip Management Gmbh Entschäumer-Zusammensetzungen für wasserverdünnbare Lacksysteme

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090001A (en) * 1973-03-28 1978-05-16 Air-Industrie Compositions for denaturing paints, especially for cleaning painting cabins
EP0124815A2 (fr) * 1983-05-02 1984-11-14 Henkel Kommanditgesellschaft auf Aktien Utilisation d'éthers de polyglycol comme additifs supprimant la mousse dans des agents de nettoyage peu écumants

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090001A (en) * 1973-03-28 1978-05-16 Air-Industrie Compositions for denaturing paints, especially for cleaning painting cabins
EP0124815A2 (fr) * 1983-05-02 1984-11-14 Henkel Kommanditgesellschaft auf Aktien Utilisation d'éthers de polyglycol comme additifs supprimant la mousse dans des agents de nettoyage peu écumants

Also Published As

Publication number Publication date
DE4211207A1 (de) 1993-10-07

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