WO2020007598A1 - Utilisation de polyuréthanes dans des agents porteurs à base d'eau pour supprimer des pertes de peinture à la pulvérisation - Google Patents

Utilisation de polyuréthanes dans des agents porteurs à base d'eau pour supprimer des pertes de peinture à la pulvérisation Download PDF

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Publication number
WO2020007598A1
WO2020007598A1 PCT/EP2019/065923 EP2019065923W WO2020007598A1 WO 2020007598 A1 WO2020007598 A1 WO 2020007598A1 EP 2019065923 W EP2019065923 W EP 2019065923W WO 2020007598 A1 WO2020007598 A1 WO 2020007598A1
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WO
WIPO (PCT)
Prior art keywords
weight
particularly preferably
carrier medium
water
less
Prior art date
Application number
PCT/EP2019/065923
Other languages
German (de)
English (en)
Inventor
Christian KOLT
Sebastian SINNWELL
Original Assignee
Henkel Ag & 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 & Co. Kgaa filed Critical Henkel Ag & Co. Kgaa
Publication of WO2020007598A1 publication Critical patent/WO2020007598A1/fr

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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

Definitions

  • EP 2 365 037 A1 describes an aqueous separating liquid for collecting paint overspray from a gas stream, which contains at least 49.95% by weight of water, at least one nonionic surface-active agent and 5 to 50% by weight of an organic water-soluble film-supporting component which is selected from monomeric polyols with at least three hydroxyl groups in the polymer and polymeric polyols selected from poly (ethylene glycols), polyester polyols, acrylic polyols and polyurethane polyols, the aqueous separating solution having a viscosity expressed as a flow time in the range from 1 1 s to 25 s, measured according to DIN 53 21 1 using a 4 mm flow cup at 23 ° C.
  • the separation liquid described can be used in a process in which a gas stream is passed through the painting booth and the paint overspray is brought into contact with the gas stream.
  • the gas stream is passed over a surface on which an essentially continuous liquid film of the separating liquid is formed, as a result of which paint particles or droplets from the gas stream are transferred into the separating liquid.
  • the water-based agent contains the at least one nonionic surfactant in an amount of at least 0.05% by weight, preferably at least 0.1% by weight, particularly preferably at least 0.3% by weight. %, but preferably less than 3% by weight, particularly preferably less than 2% by weight and in particular less than 1% by weight, in each case based on the total weight of the water-based agent.
  • the water-based agent when used as a carrier medium, preferably has a viscosity at shear rates in the range from 10 to 1000 s -1 , which is always above 10 mPas, particularly preferably above 20 mPas. Furthermore, the ratio of rest viscosity hio to process viscosity h-ioo is preferably not greater than 10: 1. In this way, a homogeneous drainage of the carrier medium can be achieved at the separation surfaces.
  • the deposition surface is continuously washed around by the carrier medium, the carrier medium preferably flowing off the deposition surface following gravity.
  • the flow around the deposition surface is preferably laminar.
  • a laminar flow of the carrier medium on the separating surfaces is defined in the context of the present invention in such a way that the carrier medium flows outside of a laminar boundary layer following gravity almost parallel to the separating surface and the flow neither breaks off nor swirls, so that with a constant volume flow of the flushing carrier medium largely stationary flow along the separation surface results.
  • a homogeneous wetting of the deposition surfaces can be achieved using the specified carrier medium.
  • the film that forms on the separating surface should also have a sufficient thickness in order to prevent paint overspray from striking or damaging the separating surface.
  • An embodiment is therefore preferred in which Separation area a wet film coverage of at least 0.5 l / m 2 , but preferably less than 2 l / m 2 , each based on the volume of carrier medium, is realized.
  • the viscosity over the specified shear rate range of 0.01-100 reciprocal seconds was determined using a plate / cone viscometer (Haake Mars 60, Thermo Fisher Scientific Inc.) with a cone diameter of 35 mm at 20 ° C. when going through a shear rate staircase of 0.01 - 100 s 1 determined with 45 measured values per decade, whereby the first cycle is shown.

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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)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne l'utilisation d'un agent à base d'eau renfermant au moins un épaississant polyuréthane et au moins un tensioactif non ionique, en tant qu'agent porteur, pour supprimer des pertes de peinture à la pulvérisation dans des cabines d'application de peinture. Cette invention concerne en outre un procédé pour supprimer, de l'air ambiant, des pertes de peinture à la pulvérisation au moyen de l'agent à base d'eau selon l'invention.
PCT/EP2019/065923 2018-07-03 2019-06-18 Utilisation de polyuréthanes dans des agents porteurs à base d'eau pour supprimer des pertes de peinture à la pulvérisation WO2020007598A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18181365 2018-07-03
EP18181365.0 2018-07-03

Publications (1)

Publication Number Publication Date
WO2020007598A1 true WO2020007598A1 (fr) 2020-01-09

Family

ID=62846031

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/065923 WO2020007598A1 (fr) 2018-07-03 2019-06-18 Utilisation de polyuréthanes dans des agents porteurs à base d'eau pour supprimer des pertes de peinture à la pulvérisation

Country Status (1)

Country Link
WO (1) WO2020007598A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046409A1 (de) 2008-09-04 2010-05-12 Eisenmann Anlagenbau Gmbh & Co. Kg Verfahren zum Abscheiden von Lack-Overspray
EP2365037A1 (fr) 2010-03-10 2011-09-14 PPG Industries Ohio, Inc. Verfahren zur Entfernung eines Lack-Oversprays von einer Lackierkabine
EP2995657A1 (fr) * 2014-09-10 2016-03-16 PPG Industries Ohio Inc. Liquide de séparation aqueuse et procédé permettant d'éliminer les excédents de peinture vaporisée dans une cabine de pulvérisation de peinture
EP3165577A1 (fr) 2015-11-06 2017-05-10 Henkel AG & Co. KGaA Milieu de support de suppression d'excès de projection de peinture

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046409A1 (de) 2008-09-04 2010-05-12 Eisenmann Anlagenbau Gmbh & Co. Kg Verfahren zum Abscheiden von Lack-Overspray
EP2365037A1 (fr) 2010-03-10 2011-09-14 PPG Industries Ohio, Inc. Verfahren zur Entfernung eines Lack-Oversprays von einer Lackierkabine
EP2995657A1 (fr) * 2014-09-10 2016-03-16 PPG Industries Ohio Inc. Liquide de séparation aqueuse et procédé permettant d'éliminer les excédents de peinture vaporisée dans une cabine de pulvérisation de peinture
EP3165577A1 (fr) 2015-11-06 2017-05-10 Henkel AG & Co. KGaA Milieu de support de suppression d'excès de projection de peinture

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