WO2000050003A1 - Hydrophobe, rheologisch wirksame mittel, verfahren zu ihrer herstellung und ihre verwendung - Google Patents
Hydrophobe, rheologisch wirksame mittel, verfahren zu ihrer herstellung und ihre verwendung Download PDFInfo
- Publication number
- WO2000050003A1 WO2000050003A1 PCT/EP2000/001294 EP0001294W WO0050003A1 WO 2000050003 A1 WO2000050003 A1 WO 2000050003A1 EP 0001294 W EP0001294 W EP 0001294W WO 0050003 A1 WO0050003 A1 WO 0050003A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrophobic
- ethyl
- clay minerals
- ion
- rheologically active
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/26—Aluminium; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/41—Amines
- A61K8/416—Quaternary ammonium compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/44—Products obtained from layered base-exchange silicates by ion-exchange with organic compounds such as ammonium, phosphonium or sulfonium compounds or by intercalation of organic compounds, e.g. organoclay material
Definitions
- the present invention relates to hydrophobic, theologically active agents based on ion-exchangeable clays and / or clay minerals which contain hydrophobic cations.
- the invention further relates to processes for the preparation of these compositions and their use.
- Hydrophobic, rheologically active agents based on ion-exchangeable clays and / or clay minerals are known. They have so far been produced by reacting ion-exchangeable clays and / or clay minerals, in particular bentonites, which contain montmorillonite or hectorite as main constituents, or attapulgites with quaternary ammonium salts. As quaternary ammonium salts, especially N, N-dialkyl-dimethylammonium chlorides are reacted with the mostly warm aqueous slurry of bentonite or attapulgite.
- the literature also contains the information that poor quality organobentonites can also be produced in the kneader by directly reacting the solid starting materials bentonite with N, N-dialkyldimethylammonium chloride.
- the products obtained in this way are used in particular as thixotropic agents for a wide variety of purposes and have so far proven themselves.
- a major disadvantage of these thixotropic agents and the by-products formed during their production is their very poor biodegradability. This also poses corrosion risks in many applications Presence of, albeit seemingly small amounts, chloride ions, which cannot be removed even with considerable washing effort.
- the commercial forms of N, N-dialkyldimethylammonium chloride contain up to 15% 2-propanol, which, when used to produce organobentonites, entails additional risks and environmental problems.
- the object of the invention is to provide hydrophobic, rheologically active agents based on ion-exchangeable clays and / or clay minerals which are much more readily biodegradable, contain no chloride ions and, if possible, can also be prepared 2-propanol-free. They can replace the previous products in all areas, such as paints, varnishes, coating systems, construction technology, cosmetics, medical-pharmaceutical products, lubricants etc. without much effort.
- the cations in the exchangeable clays and / or clay minerals have hydrophobic cations of the quaternary diesters, namely the N, N-di (acyloxy-2-ethyl) -N-hydroxy-2-ethyl, N-methylammonium methosulfates of the formula I, the -methophosphates and / or -dimethophosphates of the formula II and III, in which R represents alkyl groups.
- acyl groups here preferably consist predominantly of saturated and / or unsaturated fatty acids having 8 to 22 carbon atoms, fatty acids having 16 to 18 carbon atoms of animal and / or vegetable and / or synthetic origin being preferred.
- Bentonites are preferred as ion-exchangeable clays and / or clay minerals.
- montmorillonite- or hectorite-rich starting materials are used, as well as attapulgite. They are pre-cleaned, for example, by air sifting and sieving, by sedimentation of slurries in water with 30 or less g of bentonite / l slurry or by hydrocentrifugation.
- Knowledge of the ion exchange capacity of the purified starting material in mmol / 100 g is essential. For complete conversion, the same molar amount of quaternary esters of the formula I, II and / or III is used in mmol.
- the molar ratio of the two reactants can be selected from 1: 1 (non-polar) to 1: 0.1 (strongly polar), depending on the desired properties of the product.
- the practical result Water-insoluble product is separated from the mother liquor by filtration or centrifugation and, if necessary, washed as salt-free as possible.
- the product which contains a lot of water, is subjected to gentle drying, then crushed and finely ground. In contrast to the previous organobentonites, it is chloride-free. This eliminates any risk of consequential damage from chloride-induced corrosion.
- the 2-propanol content is practically reduced to zero.
- the quaternary esters of formula I used according to the invention have so far only been used as textile auxiliaries, i.e. been used as a fabric softener.
- the methophosphates and / or the dimethophosphates of the formulas II and III can be prepared by reacting the intermediate N, N-di (acyloxy-2-ethyl) -N-hydroxy-2-ethylamine with trimethophosphite (CH 3 -0) 3 P and subsequent oxidation with atmospheric oxygen.
- Trimethophosphite can be produced, for example, from phosphorus trichloride and methanol.
- the methophosphates and dimethophosphates have the advantage that they do not have to be washed out, since production-related impurities caused by phosphoric acid or phosphoric acid derivatives do not pose any risk of corrosion, but rather act as anti-corrosion agents.
- hydrophobic, rheologically active agents can even improve adhesion on rusted iron and thus improve the adhesive strength of correspondingly thixotropic colors. In cases where the low pH could interfere, neutralization can also be carried out in these cases, for example with chalk. Finally, it can also be neutralized with the help of triethanolamine, which then produces triethanolamine phosphate, which is known as a corrosion inhibitor for iron.
- the preparation of the hydrophobic, rheologically active agents according to the invention is described in the following examples. Of course, other clays and clay minerals and other N, N-di (acyloxy-2-ethyl) -N-hydroxy-2-ethyl-N-methylammonium methosulfates, methophosphates and / or dimethophosphates can also be used.
- bentonite from CECA ATO (commercial products with the name "Clarsol”) is, in accordance with its practical exchange capacity in mmol / 100 g in a molar ratio of 1: 1, also with commercially available N, N-di (acyloxy-2-ethyl) -N-hydroxy- 2-ethyl-N-methylammonium methosulfates (Noxamium 91, Noxamium 920 or Noxamium 960) implemented. They are also products from the company CECA ATO. The reaction is carried out by continuous, portionwise addition of the noxamium to the vigorously agitated 70 to 80 ° C warm slurry of the clarsol pre-cleaned by sedimentation.
- Noxamium 91 and Noxamium 920 mainly contain the fatty acids of filtered sebum as acyl groups.
- Noxamium 960 mainly contains the fatty acids of palm oil.
- the biodegradability of the products fulfills the conditions of the NF-T 90306 method or the OECD 301 B directives.
- the commercial products Noxamium 91, 920 and 960 contain certain amounts of 2-propanol. It is possible to remove this 2-propanol beforehand, for example by distillation. The reaction described above is still the same. Completely 2-propanol-free end products are thus obtained.
- Example 1 The starting materials of Example 1, namely noxamium 91, 920 or 960 and bentonite, which, however, is only pre-cleaned by grinding and air classifying, are mixed intensively together with the suspension of a paint containing solvents, pigments and optionally other additives.
- the organobentonite forms and thixotropes the entire mixture.
- finely divided calcium carbonate can be used if desired. This gives a chloride-free thixotropic color which, if desired, is adjusted to the desired viscosity by means of a further solvent.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Birds (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Dermatology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Cosmetics (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00912474A EP1156780A1 (de) | 1999-02-25 | 2000-02-17 | Hydrophobe, rheologisch wirksame mittel, verfahren zu ihrer herstellung und ihre verwendung |
AU34232/00A AU3423200A (en) | 1999-02-25 | 2000-02-17 | Hydrophobic, rheologically active agent, method for producing the same and use thereof |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999108006 DE19908006C1 (de) | 1999-02-25 | 1999-02-25 | Hydrophobe, rheologisch wirksame Mittel, Verfahren zu ihrer Herstellung und ihre Verwendung |
DE19908006.2 | 1999-02-25 | ||
DE19946027.2 | 1999-09-25 | ||
DE19946027 | 1999-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000050003A1 true WO2000050003A1 (de) | 2000-08-31 |
Family
ID=26052036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/001294 WO2000050003A1 (de) | 1999-02-25 | 2000-02-17 | Hydrophobe, rheologisch wirksame mittel, verfahren zu ihrer herstellung und ihre verwendung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1156780A1 (de) |
AU (1) | AU3423200A (de) |
WO (1) | WO2000050003A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4402881A (en) * | 1980-11-12 | 1983-09-06 | International Minerals & Chem. Corp. | Method of making organophilic clays |
EP0370675A2 (de) * | 1988-11-21 | 1990-05-30 | Kao Corporation | Weichspülmittel |
EP0398410A1 (de) * | 1989-05-18 | 1990-11-22 | PELT & HOOYKAAS B.V. | Verfahren zur Immobilisierung von schlädlichen Metallen und organischen Stoffen |
DE19602856A1 (de) * | 1996-01-26 | 1997-07-31 | Henkel Kgaa | Biologisch abbaubare Esterquats als Flotationshilfsmittel |
DE19732015C1 (de) * | 1997-07-25 | 1998-07-23 | Henkel Kgaa | Selbstemulgierende Zubereitungen |
-
2000
- 2000-02-17 WO PCT/EP2000/001294 patent/WO2000050003A1/de not_active Application Discontinuation
- 2000-02-17 AU AU34232/00A patent/AU3423200A/en not_active Abandoned
- 2000-02-17 EP EP00912474A patent/EP1156780A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4402881A (en) * | 1980-11-12 | 1983-09-06 | International Minerals & Chem. Corp. | Method of making organophilic clays |
EP0370675A2 (de) * | 1988-11-21 | 1990-05-30 | Kao Corporation | Weichspülmittel |
EP0398410A1 (de) * | 1989-05-18 | 1990-11-22 | PELT & HOOYKAAS B.V. | Verfahren zur Immobilisierung von schlädlichen Metallen und organischen Stoffen |
DE19602856A1 (de) * | 1996-01-26 | 1997-07-31 | Henkel Kgaa | Biologisch abbaubare Esterquats als Flotationshilfsmittel |
DE19732015C1 (de) * | 1997-07-25 | 1998-07-23 | Henkel Kgaa | Selbstemulgierende Zubereitungen |
Also Published As
Publication number | Publication date |
---|---|
EP1156780A1 (de) | 2001-11-28 |
AU3423200A (en) | 2000-09-14 |
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