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
  • C11D3/02—Inorganic compounds ; Elemental compounds
  • C11D3/04—Water-soluble compounds
  • C11D3/046—Salts
• • 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
  • C11D1/52—Carboxylic amides, alkylolamides or imides or their condensation products with alkylene oxides
  • C11D1/523—Carboxylic alkylolamides, or dialkylolamides, or hydroxycarboxylic amides (R1-CO-NR2R3), where R1, R2 or R3 contain one hydroxy group per alkyl group
• • 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
  • C11D1/65—Mixtures of anionic with cationic compounds
  • C11D1/652—Mixtures of anionic compounds with carboxylic amides or alkylol amides
• • 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
  • C11D17/0047—Detergents in the form of bars or tablets
  • C11D17/0056—Lavatory cleansing blocks
• • 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
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols

Definitions

• none of the known products is free from disadvantages; be it too high a dissolving speed, be it insufficient cohesion or inadequate adhesion to the container wall, so that the detergent is carried away in part or in total undissolved by the water, or be it a lack of cleaning ability due to uneven product delivery.
• the object of the invention was to develop a cleaning block with better properties overall.
• this block as a slowly soluble detergent depot in the water tank of flush toilets and a method for the production.
• the cleaning agent blocks according to the invention are primarily characterized by a particularly uniform rinsing rate; ie, regardless of how far the cleaning blocks have already been removed, there is always approximately the same concentration of active ingredients in the rinse water. This is not least due to the fact that the blocks melt somewhat in the water with increasing service life and thereby the loss of surface area due to the mass erosion, approximately compensate. Also very noteworthy is the good adhesion of the blocks to the container walls, which means that the blocks are not carried away by the water flow even under unfavorable conditions, such as can be found in the suction toilets working with large amounts of water. Since the blocks also do not tend to disintegrate, they have an extremely long service life.
• a long period of effectiveness is particularly desirable today because cisterns are increasingly being installed under plaster and these cisterns are difficult to open.
• a further advantage of the formulations according to the invention is that all active ingredients are to a high degree ecologically compatible or readily biodegradable.
• the cleaning blocks contain monoalkyl sulfate sodium salts which have an average of 12 to 14 carbon atoms in the alkyl group. These are the monosodium salts of sulfuric acid half-esters of long-chain alcohols, which are preferably unbranched. In particular, they are descendants of fatty alcohols, of which coconut alkyl sulfate and lauryl sulfate are particularly noteworthy. Other surfactants are contained in small amounts at most, provided they do not adversely affect the properties of the blocks; however, they are preferably entirely absent.
• the proportion of the alkyl sulfates in the blocks is between 10, preferably 15, percent by weight and 30, preferably 25, percent by weight.
• This nonionic component is a fatty acid amide derived from alkanolamines with 2 to 6 carbon atoms and from fatty acids with an average of 12 to 18 carbon atoms. Mono- and diethanolamine are preferred as the amine component; in the fatty acid part, preference is given to fatty acids which have an average of 12 to 14 carbon atoms. Coconut fatty acid monoethanolamide is particularly preferred.
• Component b) is contained in the cleaning blocks in amounts between 5, preferably 10, percent by weight and 40, preferably 35, percent by weight.
• Alkali salts represent the third necessary component of the cleaning blocks according to the invention. Their task is, inter alia, to increase the cleaning power and to increase the specific weight of the blocks.
• Weakly acidic or alkaline or neutral reacting alkali salts are preferably used, for example sodium carbonate, sodium bicarbonate, borax, sodium sulfate and sodium chloride.
• the sodium salts and especially sodium sulfate are of particular importance.
• the content of alkali salts in the cleaning blocks is between 15, preferably 20, percent by weight and 60, preferably 55, percent by weight. In this case, preferably more than 50% by weight, in particular more than 70% by weight, of the salts consist of sodium sulfate.
• Phosphates are used in the blocks in amounts of not more than 10% by weight, but preferably not at all.
• the salts used can contain water of crystallization to a certain extent, but, like all other components, are preferably used anhydrous.
• the cleaning agents according to the invention can contain up to 20% by weight of solid, water-soluble, low-molecular carbon contain acids as complexing agents for calcium. Suitable are all those carboxylic acids whose first complexation constant for calcium ions (K1) is above 101, determined at room temperature in an aqueous solution of ionic strength 0.2. Examples of such carboxylic acids are succinic acid, tartaric acid, diglycolic acid, hydroxyethyliminodiacetic acid, nitrilotriacetic acid and ethylenediaminetetraacetic acid. Instead of the carboxylic acids or in a mixture with these, the equivalent amounts of the corresponding salts, in particular the alkali salts, are preferably used.
• the readily biodegradable carboxylic acids consisting only of carbon, hydrogen and oxygen, the complex formation constant of which K1 is between 101 and 104 and the salts thereof.
• Citric acid, malic acid and gluconic acid and, in particular, their salts are particularly preferred.
• the cleaning blocks preferably contain 1 to 15% by weight, in particular 3 to 10% by weight, of these complexing agents, each calculated as free acids.
• the agents can contain up to 15% by weight of perfume oil; contents between 3 and 8% by weight are preferred.
• This component can be contained in the cleaning agents in amounts of up to 20% by weight.
• the primary purpose of the dye is to visually indicate to the consumer the effectiveness of the agents.
• Preferred dyes are those which, owing to their solubility, do not diffuse out of the cleaning blocks prematurely.
• the dyes are preferably incorporated in amounts between 3 and 20% by weight.
• the hygienic effect can be enhanced by the addition of germ-inhibiting agents.
• the amount of these agents depends heavily on the effectiveness of the particular compound and can be up to 5% by weight. Preferably more than 0.1% by weight are incorporated into the cleaning blocks.
• Isothiazolone mixtures or combinations of sodium benzoate and chloroacetamide are particularly suitable, but other antimicrobial compounds, for example phenols or chlorine-releasing agents, can also be used.
• the cleaning blocks according to the invention can contain further auxiliaries or accompanying substances, provided they do not adversely affect the properties of the blocks.
• plasticization aids, rinse-regulating substances, cleaning enhancers and aids are to be mentioned which facilitate the manufacture of the cleaning blocks.
• Coating agents that are subsequently applied to the blocks in order to improve their manageability and storage stability before use also belong to this category.
• the auxiliaries can be present in the blocks in amounts of up to 10% by weight, preferably in amounts of between 0.1 and 5% by weight; in particular, however, they can also be completely absent.
• the production of the cleaning blocks according to the invention is particularly simple due to the fact that all solid raw materials are available in the form of fine powders and can therefore easily be intimately mixed in simple mixers such as barrel, Lödige or paddle mixers.
• the liquid components can be introduced during the mixing process without the mixture clumping.
• the result is a free-flowing, largely homogeneous premix that can be easily transferred to an extrusion system via screw conveyors, where it is pressed into dense strands. This procedure avoids energy-intensive stages such as heating and kneading.
• the extruded strands are preferably given a square or rectangular shape, so that cleaning blocks in the form of cubes or cuboids can be produced therefrom. This shape is particularly preferred because it ensures an optimal contact surface in the water tanks and thus good adhesion.
• the cleaning blocks preferably have weights of 50 to 150 g and have densities of about 1.2 to about 1.7 g / cm 3.
• the cleaning blocks are used in such a way that one or, if necessary, also several cleaning blocks are thrown into the water tank of the flushing toilet.
• the cleaning power then develops automatically by slowly dissolving the blocks in the water and transporting the dissolved active ingredients with the water into the toilet bowl.
• the test was carried out in an automatically controlled toilet system, which released the contents of the water tank every 1 hour and refilled the tank with 9 liters of tap water of 17 ° German hardness and a temperature of approx. 15 ° C.
• One block was placed in each case in the water tank and it was determined how many rinses were possible until the block was completely used up.
• Table 2 shows the rounded results obtained in five parallel experiments.

Landscapes

• 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)
• Inorganic Chemistry (AREA)
• Detergent Compositions (AREA)
• Cleaning By Liquid Or Steam (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=6314639

Family Applications (1)

Country Status (6)

Cited By (5)

Families Citing this family (44)

Family Cites Families (11)

• 1986
  • 1986-11-24 DE DE19863640090 patent/DE3640090A1/de not_active Withdrawn
• 1987
  • 1987-11-16 ES ES198787116866T patent/ES2032423T3/es not_active Expired - Lifetime
  • 1987-11-16 EP EP87116866A patent/EP0268967B1/fr not_active Expired - Lifetime
  • 1987-11-16 DE DE8787116866T patent/DE3780003D1/de not_active Expired - Lifetime
  • 1987-11-16 AT AT87116866T patent/ATE77647T1/de not_active IP Right Cessation
  • 1987-11-24 US US07/124,693 patent/US4820449A/en not_active Expired - Lifetime
• 1992
  • 1992-09-23 GR GR920402083T patent/GR3005752T3/el unknown

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