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
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/0034—Fixed on a solid conventional detergent ingredient
• • 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
• • 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
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets

Definitions

• the invention is in the field of the production of cationic surfactant-containing granules such as for example in special detergents and cleaning agents, but also in Fabric softeners are used.
• Cationic surfactants are used in special detergents and cleaning agents, but especially in Laundry post-treatment agents such as fabric softeners are used to achieve the appropriate agents treated textiles a soft, fluffy feel and to give pleasant wearing properties. This also makes it easier on the textiles applied cationic surfactant ironing and leads to an antistatic effect that in turn, the wearing properties improved.
• the cationic surfactants are usually in the form of dispersions liquid to pasty agent incorporated.
• German published patent application DE 32 43 983 (Degussa AG) describes a free-flowing plasticizer concentrate which consists of one or more cationic surfactants which, if appropriate in a mixture with one or more solubilizers, are applied to synthetic silica.
• the agents are prepared by mixing a melt or a solution of the cationic surfactant in isopropanol with the precipitated and spray-dried silica.
• Powdery fabric softening agents which contain cationic surface-active substances adsorbed on highly absorbent silica are also described in German Offenlegungsschrift DE 34 02 437 (REWO Chemische Werke GmbH).
• the cationic surfactants are applied as a melt or solution in isopropanol to the silica in the mixer and then granulated under shear.
• German patent specification DE 43 08 794 (Henkel KGaA) describes special solid cationic surfactant preparation forms which are obtained by alkylation of triethanolamine esters in the presence of suitable dispersants (in particular fatty alcohols).
• suitable dispersants in particular fatty alcohols.
• the products obtained in this way have a flake-like structure and low bulk densities.
• the first two methods have the disadvantage that the cationic surfactant is in the form its isopropanol solution or as a melt on an insoluble carrier is applied.
• the isopropanol has to be used again later be removed by evaporation, since alcohols have the powder properties of Change detergent compositions negatively.
• it is a Energy required to melt the cationic surfactant.
• silica in large amounts also leads to the use in detergents and fabric softeners to form residues in the treated textiles.
• the disadvantage of all prior art processes is that they are products deliver that are only poorly soluble or not soluble without residues. The latter Process also delivers products with an undesirable low Bulk density.
• the object of the invention was to provide a method for manufacturing to provide cationic surfactant-containing granules which the process and Overcomes product disadvantages.
• the invention further relates to a process for the preparation of cationic surfactants Granules, in which a solid carrier in a mixer under low Energy input with a cationic surfactant and then with the addition of Water or an aqueous solution of one or more granulating aids under high Granular energy input.
• the cationic surfactant can be added directly to the mixer in its delivery form, or in the form of a liquid to pasty cationic surfactant preparation form on the solid Carriers are injected.
• Such forms of cationic surfactants can be for example by mixing commercially available cationic surfactants with auxiliaries such as Manufacture non-ionic surfactants, polyethylene glycols or polyols. Even lower ones Alcohols such as ethanol and isopropanol can be used, the amount of such lower alcohols in the liquid cationic surfactant preparation form from the reasons mentioned above should be less than 10% by weight.
• the cationic active substance can also by the procedure according to the invention can be introduced directly into the process, without first being melted or in solution to be brought.
• Solid cationic surfactants are simply added and act on the carrier in the course of the granulation; Forms of cationic surfactants other states of matter are added, poured in or depending on the viscosity atomized. All are solid carriers to which the cationic surfactant is applied.
• Carriers or builders usually used in detergents and cleaning agents suitable, carriers from the group of alkali metal sulfates, carbonates, silicates, citrates, aluminum silicates and citric acid are preferred.
• cellulose and Starch and its derivatives are natural polysaccharides such as cellulose and Starch and its derivatives. These include, in particular, cellulose and starch itself, however also cellulose and starch derivatives, which are made from cellulose by polymer-analogous reactions or starch are available. Such chemically modified celluloses or starches include, for example, products from esterifications or etherifications in which Hydroxy hydrogen atoms have been substituted. But also celluloses or starches, in which the hydroxyl groups against functional groups that do not have a Oxygen atoms are bound, have been replaced, can be used as a carrier material. In the group of these derivatives includes, for example, alkali celluloses, Carboxymethyl cellulose (CMC) and starch (CMS), cellulose and starch esters and - ether and aminocelluloses and starches.
• CMC Carboxymethyl cellulose
• CMS starch
• the amount of solid carrier in the resulting granules 50 to 80 wt .-% of the weight of the resulting granules.
• Cationic surfactants used for the process according to the invention are all customary surface-active substances into consideration, with cationic surfactants with fabric softening Effect are clearly preferred.
• the granules are produced by placing the solid support in a mixer and then applied the cationic surfactant with low energy input. Then one or more granulation aids in the form of an aqueous Solution added and the mixture wet granulated with high energy input.
• Low energy input in the sense of the method according to the invention means slow-running mixing tools or the omission of the use of additional chopping units.
• This low energy input is further characterized in that the agitator shaft of the mixer does not swirl the mix, but rather a kind Haufwerksmischen "is carried out. In which the mix in the mixer is raised in the direction of rotation.
• high energy input means a rapid rotation of the mixing tools or the use of additional comminution units.
• particles from the bed of material are whirled into the free mixing space and the Mixing fluidized more and more, in this state the particles fill the mixer in the form of a cloud, the so-called mechanically generated fluidized bed ".
• the product is finally hurled onto the mixer wall in the form of a mixing material ring, which rotates there.
• the process according to the invention can be carried out in both high-intensity and slow-running mixers, the high-intensity mixers being operated slowly in the first process step and the energy input required for the second process step being provided by the slow-moving mixers by means of additional units such as knife rings.
• high-speed mixers are the Lödige® CB 30 recycler, the Schugi® granulator, the Eirich® mixer type R or the Drais® K-TTP 80
• examples of slow-speed mixer granulators are the Drais® KT 160 and the Lödige® KM 300. The latter is often called Lödige ploughshare mixer ".
• aqueous solutions Solutions of carboxymethyl cellulose (CMC), water glass or citric acid are all of the auxiliaries commonly used in wet granulation usable.
• the process according to the invention particularly advantageously uses aqueous solutions Solutions of carboxymethyl cellulose (CMC), water glass or citric acid.
• CMC carboxymethyl cellulose
• the aqueous solutions have a dependency on the particular granulation aid different concentrations of the substances used. This is how CMC for example in 0.2 to 5% by weight aqueous solutions, water glass in the form 10 to 40 wt .-% warmer solutions and citric acid than 5 to 30 wt .-% aqueous Solution used.
• the method according to the invention can also be used as pure water without dissolved ingredients Use granulation aids without losing their advantages.
• the water or the aqueous solutions of the granulation aids are used in amounts of 1 to 5, preferably from 2 to 4% by weight, based on the weight of the resulting granules, added in the second stage of the process.
• the granulated particles that arise in the process according to the invention can subjected to customary post-treatment steps for detergents and cleaning agents will.
• drying of the granules in the fluidized bed is Connection to the granulation preferred.
• powdering, rounding or a different surface treatment can be applied directly to the granulation or to a connect any drying
• the cationic surfactant-containing granules according to the invention contain 5 to 40% by weight of one or several textile softening agents of the above formulas I, II or III, 50 up to 90% by weight of a solid carrier from the group of alkali metal sulfates, carbonates, silicates, citrates and aluminum silicates and citric acid and 0 to 5, preferably 0.1 to 5 wt .-% of one or more granulation aids, each based on the Weight of the granulate.
• Granules containing cationic surfactants are preferred in which the Cationic surfactant component a) is a quaternized triethanolamine ester.
• Preferred Granules containing cationic surfactants contain sodium sulfate as solid carrier component b).
• Granulation aids c) are preferably one or more substances selected from the Group of cellulose derivatives, water glasses or organic salts used.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Detergent Compositions (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Glanulating (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Applications Claiming Priority (2)

Publications (4)

Family

ID=7830469

Family Applications (1)

Country Status (4)

Cited By (5)

Citations (28)

• 1997
  • 1997-05-26 DE DE19721885A patent/DE19721885A1/de not_active Withdrawn
• 1998
  • 1998-05-18 EP EP98108983A patent/EP0881279B2/fr not_active Expired - Lifetime
  • 1998-05-18 AT AT98108983T patent/ATE230431T1/de not_active IP Right Cessation
  • 1998-05-18 DE DE59806786T patent/DE59806786D1/de not_active Expired - Lifetime
  • 1998-05-18 ES ES98108983T patent/ES2189034T5/es not_active Expired - Lifetime

Patent Citations (28)

Non-Patent Citations (2)

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