EP0173376B1 - Verfahren zum Trocknen von Autos und Mittel zur Durchführung - Google Patents

Verfahren zum Trocknen von Autos und Mittel zur Durchführung Download PDF

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Publication number
EP0173376B1
EP0173376B1 EP85201232A EP85201232A EP0173376B1 EP 0173376 B1 EP0173376 B1 EP 0173376B1 EP 85201232 A EP85201232 A EP 85201232A EP 85201232 A EP85201232 A EP 85201232A EP 0173376 B1 EP0173376 B1 EP 0173376B1
Authority
EP
European Patent Office
Prior art keywords
weight
water
carbon atoms
percent
gew
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
EP85201232A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0173376A1 (de
Inventor
Jürgen Dr. Meister
Manfred Pressler
Horst Dr. Menzel
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.)
Rain Carbon Germany GmbH
Original Assignee
Ruetgerswerke AG
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 Ruetgerswerke AG filed Critical Ruetgerswerke AG
Priority to AT85201232T priority Critical patent/ATE27710T1/de
Publication of EP0173376A1 publication Critical patent/EP0173376A1/de
Application granted granted Critical
Publication of EP0173376B1 publication Critical patent/EP0173376B1/de
Expired legal-status Critical Current

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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
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2072—Aldehydes-ketones
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/62—Quaternary ammonium compounds

Definitions

  • the invention relates to methods for drying cars after washing in car washes.
  • liquid agents are added to the water of the last rinsing process in small amounts in car washes, and these cause the water film on the paint surface to tear and the water to drain off easily and as completely as possible.
  • hydrophobing agents contain cationic surfactants, mostly quaternary ammonium compounds and up to 10% hydrocarbons such as Petroleum.
  • hydrocarbons have a particularly favorable tearing effect
  • the wastewater from car washes should be as free as possible from environmentally harmful hydrocarbons.
  • hydrocarbon-containing autohydrophobing agents are often not sufficiently stable in storage. There has been no shortage of attempts to develop formulations for hydrocarbon-free autohydrophobing agents.
  • the object is achieved by providing methods according to claims 1 and 2 and the autohydrophobing agents according to claim 3.
  • the autohydrophobing agents according to the invention are stable on storage. No phase separation is observed even after the agents have been stored for several months. This is surprising insofar as it is known from DE-OS 25 40 873 that the acetals are used as foam-suppressing agents in detergents and cleaning agents and that the person skilled in the art therefore has a demulsifying effect and therefore a lower one, especially in the high concentrations of acetals used in autohydrophobing agents Storage stability of the autohydrophobing agents produced with them would be expected.
  • the acetates are combined with cationic surfactants in the previously known fields of application and must not impair the wettability of the water. It is therefore all the more surprising that the same compounds in the agents according to the invention bring about a strong hydrophobization of the paint surfaces of motor vehicles and thus cause the water to crack and bead up well.
  • the acetals used according to the invention can be prepared in a manner known per se by reacting aldehydes (having 4 to 11 carbon atoms) with alcohols.
  • aldehydes are e.g. n- and i-butanal, n- and i-pentanal, n- and i-hexanal, heptanals, octanals, nonanals and decanals, as well as the corresponding alkenals unsaturated in the a position.
  • Particularly preferred are branched, primarily methyl or ethyl branched saturated or unsaturated aldehydes in the a-position.
  • isobutanal 2-ethylpentanal, 2-ethylhexanal, 2-ethylheptanal, 2-ethyloctanal, 2-methylpentene-1-al and 2-ethylhexene-1-al may be mentioned.
  • Alcohols which can be used as reactants are aliphatic saturated alcohols having 3 to 10 carbon atoms, for example butanols, isobutanols, hexanols, heptanols, octanols, branched alcohols being preferred. Branched branches, such as isobutanol, 2-ethylhexanol, 2- Ethyl heptanol, 2-ethyl octanol and 2-methyl pentanol.
  • the components can also be used in a mixed state, in which case acetal mixtures are obtained which have the same effect.
  • Alcohol and aldehyde components are selected so that there is a carbon sum of 18 to 24 in the finished acetal, since this area gives an optimal drying effect and because the acetals in this area are already odorless, but still have a liquid consistency.
  • acetals are mixed in amounts of 10 to 40% by weight with 10 to 60% by weight of cationic surfactant, 0.5 to 10% by weight of emulsifier and 10 to 40% by weight of a solvent.
  • the autohydrophobing agents prepared in this way are diluted about 150 to 1500-fold either by pre-dilution with solvent and water and subsequent final dilution or by the direct addition of water.
  • the water thus provided with autohydrophobing agent is applied to the vehicle surface during the last rinsing process. Afterwards, the water film on the paint surface immediately rips open and the water runs off.
  • Emulsifiers for the water-insoluble alkyl acetal are fatty amine alkoxylates or aromatic alkoxylates. Furthermore, these mixtures can contain water and / or lower alcohols with 1 to 4 carbon atoms.
  • This concentrate is stored at room temperature for 3 months. No segregation phenomena are observed.
  • anhydrous autohydrophobing agent 100 parts by weight of the anhydrous autohydrophobing agent are mixed with 300 ml of water.
  • the stable emulsion thus obtained is diluted 500 times with water and this dilution is sprayed onto a previously cleaned vehicle as rinse water in a car wash.
  • the agent causes the water film to tear within 15 s.
  • the vehicle is blown dry in the usual way. After that, the paint is dry, shiny and free of stains.
  • Example 2 Analogously to Example 1, the agent is diluted 500 times with water and this dilution is sprayed onto a previously cleaned vehicle as rinse water in a car wash.
  • Example 2 Analogously to Example 1, the agent is diluted 500 times with water and this dilution is sprayed onto a previously cleaned vehicle as rinse water in a car wash.
  • Example 2 Analogously to Example 1, the agent is diluted 500 times with water and this dilution is sprayed onto a previously cleaned vehicle as rinse water in a car wash.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Paints Or Removers (AREA)
  • Processing Of Solid Wastes (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP85201232A 1984-07-27 1985-07-24 Verfahren zum Trocknen von Autos und Mittel zur Durchführung Expired EP0173376B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85201232T ATE27710T1 (de) 1984-07-27 1985-07-24 Verfahren zum trocknen von autos und mittel zur durchfuehrung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3427726 1984-07-27
DE19843427726 DE3427726A1 (de) 1984-07-27 1984-07-27 Autohydrophobierungsmittel

Publications (2)

Publication Number Publication Date
EP0173376A1 EP0173376A1 (de) 1986-03-05
EP0173376B1 true EP0173376B1 (de) 1987-06-10

Family

ID=6241722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201232A Expired EP0173376B1 (de) 1984-07-27 1985-07-24 Verfahren zum Trocknen von Autos und Mittel zur Durchführung

Country Status (3)

Country Link
EP (1) EP0173376B1 (enrdf_load_stackoverflow)
AT (1) ATE27710T1 (enrdf_load_stackoverflow)
DE (2) DE3427726A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3632621A1 (de) * 1986-09-25 1988-03-31 Hoechst Ag Autoglanztrocknungsmittel
DE3932004A1 (de) * 1989-09-26 1991-04-04 Dursol Fabrik Otto Durst Gmbh Trocknungsmittel fuer lackoberflaechen
DZ1577A1 (fr) * 1991-05-08 2002-02-17 Hoechst Ag Emploi d'acetals.
WO1992021743A1 (en) * 1991-05-31 1992-12-10 Exxon Chemical Patents Inc. Rinsing composition
DE4430721A1 (de) * 1994-08-30 1996-03-07 Hoechst Ag Autoglanztrocknungsmittel
GB9817235D0 (en) 1998-08-08 1998-10-07 Zeneca Ltd Compound,composition and use
US6342466B1 (en) * 1999-09-02 2002-01-29 Clariant Finance (Bvi) Limited Biodegradable solutions of biologically active compounds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2540873C2 (de) * 1975-09-13 1984-08-23 Basf Ag, 6700 Ludwigshafen Schaumgedämpfte Wasch- und Reinigungsmittel
DE2806980A1 (de) * 1978-02-18 1979-08-30 Hoechst Ag Autoglanztrocknungsmittel
DE3032220C1 (de) * 1980-08-27 1982-04-08 Rütgerswerke AG, 6000 Frankfurt Trocknungsmittel fuer Autokarosserieflaechen in automatischen Waschanlagen

Also Published As

Publication number Publication date
DE3427726A1 (de) 1986-02-06
DE3560239D1 (en) 1987-07-16
ATE27710T1 (de) 1987-06-15
EP0173376A1 (de) 1986-03-05
DE3427726C2 (enrdf_load_stackoverflow) 1987-11-05

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