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WO1993009861A1 - Produits antimousse - Google Patents

Produits antimousse Download PDF

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Publication number
WO1993009861A1
WO1993009861A1 PCT/EP1992/002581 EP9202581W WO9309861A1 WO 1993009861 A1 WO1993009861 A1 WO 1993009861A1 EP 9202581 W EP9202581 W EP 9202581W WO 9309861 A1 WO9309861 A1 WO 9309861A1
Authority
WO
WIPO (PCT)
Prior art keywords
formula
agent according
agents
fatty alcohols
foaming
Prior art date
Application number
PCT/EP1992/002581
Other languages
German (de)
English (en)
Inventor
Günther DEMMERING
Karl-Heinz Schmid
Michael KÖHLER
Detlev Stanislowski
Original Assignee
Henkel Kommanditgesellschaft Auf Aktien
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 Kommanditgesellschaft Auf Aktien filed Critical Henkel Kommanditgesellschaft Auf Aktien
Priority to JP5508950A priority Critical patent/JPH07501008A/ja
Priority to EP92923242A priority patent/EP0620753A1/fr
Publication of WO1993009861A1 publication Critical patent/WO1993009861A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/02—Foam dispersion or prevention
    • B01D19/04—Foam dispersion or prevention by addition of chemical substances
    • B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance

Definitions

  • the invention relates to anti-foaming agents containing fatty alcohols with 16 to 24 carbon atoms, wax esters and, if appropriate, fatty ketones and their use as additives for cleaning agents, in the production of paints and varnishes and in the wastewater treatment of sewage treatment plants and from technical processes such.
  • Alkaline cleaning agents also use the active chlorine or active oxygen compounds in addition to surfactants, builders, alkali metal silicates, carbonates and / or hydroxides contain. To prevent excessive foaming, an anti-foaming agent is usually added to these agents.
  • Another field in which anti-foaming agents are used is the wastewater treatment of sewage treatment plants.
  • air is blown into the wastewater, for example, which ensures intimate mixing and the meeting of the dirt particles with the microorganisms [ChiuZ. 25, 87 (1991)].
  • the resulting foam is protein foam in many cases and therefore particularly resistant. Instead of sedimentation, there is an undesired fixing of the solids in and on the foam lamellae, which makes it difficult to separate the sewage sludge.
  • ketones are suitable as foam inhibitors in soap-containing detergents.
  • European patent application EP 0 324 339 A2 also discloses dispersions which contain fatty ketones as active substances and mineral oils or Guerbet alcohols as carrier liquids.
  • the defoaming effect of such systems is not sufficient for many areas of application.
  • the object of the invention was therefore to develop new anti-foaming agents which are free from the disadvantages described.
  • the invention relates to antifoams containing
  • R 1 represents a saturated, linear, optionally hydroxyl-substituted alkyl radical with the following C chain distribution:
  • R- ⁇ CO for an optionally hydroxy-substituted acyl radical having 16 to 24 carbon atoms and 0 or 1 double bond
  • R 3 represents an optionally hydroxy-substituted aliphatic hydrocarbon radical with 16 to 24 carbon atoms and 0 or 1 double bond
  • R ⁇ and R5 independently of one another represent alkyl radicals having 15 to 24 carbon atoms.
  • the invention includes the finding that the application properties of the antifoam agents can be increased unexpectedly by adding small amounts of fat ketones. Furthermore, the agents are characterized by easy biodegradability, which meets the general demand for products that are as environmentally compatible as possible.
  • Fatty alcohols of the formula (I) which can be considered as component a) have 16 to 24 carbon atoms. Typical examples are cetyl alcohol, stearyl alcohol, 12-hydroxystearyl alcohol, arachyl alcohol and behenyl alcohol.
  • the fatty alcohols can also be found in
  • Suitable starting materials for this purpose are, for example, methyl esters based on rape oil rich in erucic acid, peanut oil, castor oil, medofoam oil, beef tallow or fish oil which are subjected to high pressure hydrogenation. In this case, not only is there a reduction of the ester group to the hydroxyl function, but at the same time there is also extensive saturation of double bonds contained in the fat chain.
  • Antifoam agents with particularly advantageous technical properties contain fatty alcohols of the C number range mentioned which have iodine numbers below 10, preferably 0.1 to 5.
  • Fatty alcohol mixtures which are particularly suitable as component a) for the preparation of the antifoam agents according to the invention can be characterized by the following C chain distribution:
  • Fatty alcohols or fatty alcohol mixtures are particularly preferred which have a hydroxyl number of 180 to 200, a softening point of 50 to 60 ° C. and are obtained as a wake in the distillation of fatty alcohols based on beef tallow or rapeseed oil.
  • Wax esters of the formula (II) which can be used as component b) are to be understood as the esters of C1-C24-fatty acids with C * Lg-C24-fatty alcohols. Typical examples are the esters of palmitic acid, stearic acid, 12-hydroxystearic acid, arachic acid and behenic acid with cetyl alcohol, stearyl alcohol, 12-hydroxystearyl alcohol, arachyl alcohol and behenyl alcohol.
  • the wax esters can also contain small amounts of unsaturated components, both in the fatty acid and in the fatty alcohol component. Wax esters are preferred which have an iodine number less than 10, preferably from 0.1 to 5.
  • Typical examples are stearyl stearate, stearyl behenate and behenyl behenate.
  • Pure or technical fatty acids and corresponding fatty alcohols can be used to manufacture the products, which are esterified in a manner known per se.
  • technical wax esters are used which are obtained as a residue from the hydrogenation of 15---. C24-fatty acid methyl esters to the corresponding fatty alcohols.
  • Fat ketones of the formula (III), which are considered as optional component c), are known substances which can be obtained by the relevant methods of preparative organic chemistry. For their production, one starts from, for example, fatty acid magnesium salts, which at Temperatures above 300 ° C are pyrolyzed with elimination of CO2 and water [DE-OS 25 53 900]. Typical examples are fatty ketones which are produced by pyrolysis of the magnesium salts of palmitic acid, stearic acid, arachic acid, behenic acid and their technical mixtures, for example cigig tallow fatty acid. The use of stearone (pentatriacontanon-18) is preferred.
  • the antifoam agents can typically contain the fatty alcohols in amounts of 80 to 98, preferably 90 to 95% by weight, the wax esters in amounts of 2 to 20, preferably 5 to 12% by weight and the fatty ketones in amounts of 0.1 to 10 , preferably 2 to 8 wt .-% contain.
  • the stated concentration data are in each case based on the sum of components a)> b) and c).
  • the antifoam agents according to the invention can be used in substance.
  • dispersions of components a) and b) and optionally c) are used in carrier oils, the content of carrier oil - based on the composition - being 10 to 95, preferably 50 to 90.
  • Typical carrier oils are, for example, mineral oils, paraffin oils, dialkyl ethers, in particular di-n-octyl ether, and Guerbet alcohols with 16 to 32 carbon atoms.
  • the antifoam agents can contain minor amounts of stabilizers, for example alkaline earth and / or aluminum soaps, hydrophobized silicas, phyllosilicates, tackifiers, in particular polyacrylates and contain nonionic surfactants, for example alkyl glucosides or mixed ethers.
  • stabilizers for example alkaline earth and / or aluminum soaps, hydrophobized silicas, phyllosilicates, tackifiers, in particular polyacrylates and contain nonionic surfactants, for example alkyl glucosides or mixed ethers.
  • the agents only contain components a), b) and, if appropriate, c), it is advisable during production to heat the substances with stirring to a temperature above the melting point of the component with the highest melting point and then to solidify the melt let.
  • stirring can also be carried out at room temperature; a chemical reaction does not take place in either of the two cases.
  • the anti-foaming agents according to the invention also show a foam-pressing or foam-regulating effect at higher temperatures and particularly stable foams. They are stable against active chlorine and active oxygen and are also easily biodegradable.
  • Another object of the invention therefore relates to the use of the anti-foaming agents according to the invention as additives to agents for cleaning hard surfaces.
  • This includes, for example, means for machine dishwashing, automatic bottle cleaning, CIP (cleaning-in-place) cleaning and degreasing of metal surfaces in the body shop.
  • the anti-foaming agent can detergents "in amounts of 0.1 to 10, preferably 1 to 5 wt .-% - are added - based on the detergent.
  • the antifoam agents according to the invention are also suitable as defoamers or deaerators in the production of paints and varnishes and as defoamers in the wastewater treatment of sewage treatment plants and from technical processes such as metalworking or paper production.
  • Lorol ( R ) C16 Technical Cetyl Alcohol Lorol ( R ) C18: Technical Stearyl Alcohol Stenol ( R) 1822: Technical Behenyl Alcohol Sales Products by Henkel KGaA
  • Wax ester Technical stearyl stearate from the residue of the tallow fatty acid methyl ester hydrogenation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Detergent Compositions (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

Des produits antimousse renfermant des alcools gras de 16 à 24 atomes de carbone, de composition déterminée, des esters céridiques et, le cas échéant, des cétones grasses, présentent une bonne stabilité au chlore et son appropriés pour l'emploi comme antimousse dans des détergents appliqués sur des surfaces dures, dans des peintures et vernis, pour le traitement des eaux usées dans des stations d'épuration, ainsi que dans des processus techniques, par exemple, pour le traitement des métaux ou dans la fabrication du papier.
PCT/EP1992/002581 1991-11-19 1992-11-10 Produits antimousse WO1993009861A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP5508950A JPH07501008A (ja) 1991-11-19 1992-11-10 消泡剤
EP92923242A EP0620753A1 (fr) 1991-11-19 1992-11-10 Produits antimousse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914138001 DE4138001A1 (de) 1991-11-19 1991-11-19 Antischaummittel
DEP4138001.0 1991-11-19

Publications (1)

Publication Number Publication Date
WO1993009861A1 true WO1993009861A1 (fr) 1993-05-27

Family

ID=6445115

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/002581 WO1993009861A1 (fr) 1991-11-19 1992-11-10 Produits antimousse

Country Status (4)

Country Link
EP (1) EP0620753A1 (fr)
JP (1) JPH07501008A (fr)
DE (1) DE4138001A1 (fr)
WO (1) WO1993009861A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025137A1 (fr) * 1993-04-28 1994-11-10 Henkel Kommanditgesellschaft Auf Aktien Dispersions aqueuses anti-mousse

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4578853B2 (ja) * 2004-04-30 2010-11-10 花王株式会社 Ｃｉｐ用洗浄剤組成物
JP6959087B2 (ja) * 2017-09-20 2021-11-02 花王株式会社 鋼板用リンス剤組成物

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4631145A (en) * 1983-02-17 1986-12-23 Amoco Corporation Defoamer and antifoamer composition and method for defoaming aqueous fluid systems
EP0322830A2 (fr) * 1987-12-31 1989-07-05 BASF Aktiengesellschaft Antimousse à base d'une émulsion huile dans eau

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4631145A (en) * 1983-02-17 1986-12-23 Amoco Corporation Defoamer and antifoamer composition and method for defoaming aqueous fluid systems
EP0322830A2 (fr) * 1987-12-31 1989-07-05 BASF Aktiengesellschaft Antimousse à base d'une émulsion huile dans eau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025137A1 (fr) * 1993-04-28 1994-11-10 Henkel Kommanditgesellschaft Auf Aktien Dispersions aqueuses anti-mousse
US5679286A (en) * 1993-04-28 1997-10-21 Henkel Kommanditgesellschaft Auf Aktien Aqueous dispersions of antifoam agents

Also Published As

Publication number Publication date
DE4138001A1 (de) 1993-05-27
EP0620753A1 (fr) 1994-10-26
JPH07501008A (ja) 1995-02-02

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