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
  • C11D3/36—Organic compounds containing phosphorus
  • C11D3/361—Phosphonates, phosphinates or phosphonites
• • 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
  • C11D3/08—Silicates
• • 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
  • C11D3/10—Carbonates ; Bicarbonates
• • 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
  • C11D3/12—Water-insoluble compounds
  • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
  • C11D3/1246—Silicates, e.g. diatomaceous earth
  • C11D3/128—Aluminium silicates, e.g. zeolites
• • 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
  • C11D3/36—Organic compounds containing phosphorus
  • C11D3/364—Organic compounds containing phosphorus containing nitrogen
• • 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
  • C11D3/37—Polymers
  • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
  • C11D3/3761—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in solid compositions

Definitions

• the subject of the present invention is a compact detergent formulation in powder form for washing clothes.
• Patent application WO 92/03525 proposes a detergent powder composition containing, alongside surface-active agents, an adjuvant system improving the performance of surface-active agents ("builder" system) consisting of a mixture of a zeolite, a water-soluble carboxylic chelating agent (citric acid, etc.) and a crystalline lamellar sodium silicate.
• builder an adjuvant system improving the performance of surface-active agents
• To this system can also be added homo- or co-polymers of polycarboxylic acids (polyacrylates or copolymers with maleic anhydride), organic phosphonates ...
• the Applicant has found a compact detergent formulation in powder for washing clothes with a particularly high level of primary detergency performance and this with a low incrustation rate.
• the hydrated zeolites which can be used as constituent (A) are preferably crystalline and contain of the order of 8 to 28% by weight of water, preferably of the order of 1.8 to 22% by weight of water .
• zeolites which are the subject of French patent applications No. 2,225,568, 2,269,575, 2,283,220, 2,376,074, 2,384,716, 2,392,932 and 2,528,722, of which teaching is incorporated into this application.
• the last cited reference refers in particular to zeolites having a speed constant, related to the surface of the zeolites per liter of solution greater than 0.15 s -1 .1.m -2 , preferably greater than 0.25 and advantageously included. between 0.4 and 4 s -1 .1.m -2 .
• These zeolites have particularly interesting qualities in the use in detergency.
• cogranules (B) mention may in particular be made of those which are the subject of European patent application EP-A-0 488 868. They are obtained by adsorption and / or absorption of an aqueous solution of hydrated alkali metal silicate, on a particulate inorganic support chemically inert with respect to the silicate, namely an alkali metal carbonate.
• silicates are characterized in particular by their water content "associated" with silicate.
• water content "associated" with silicate By this expression is meant the water remaining associated with the silicate after adsorption and / or absorption, that is to say the water of the supported solution which is not combined with the mineral support, in particular in the form of hydrate. crystallized.
• the amount of mineral support brought into contact with the silicate solution is adjusted so that the weight ratio of water associated with the silicate / silicate expressed as dry is at least 33/100.
• the upper limit of the weight ratio of water remaining associated with silicate / silicate expressed in dry corresponds to the limits for which a silicate is kept in powder form with fluid flow ("free flowing"), that is to say usable in detergency.
• the weight ratio of water remaining associated with silicate / silicate expressed in dry is advantageously less than or equal to about 120/100.
• the preparation of the cogranules can be done by any available means of bringing the silicate solution into contact with the carbonate particles.
• the cogranules are subjected to a densification operation.
• alkali metal silicates and carbonates there may be mentioned in particular those of sodium and potassium, and very particularly those of sodium.
• cogranules based on silicate and carbonate as described above mention may be made of Nabion® manufactured and marketed by Rhône-Poulenc.
• the organic phosphonates or aminopolyalkylbenzene phosphonates, constituents (D), can in particular be chosen from amino-tris-methylenephosphonic acid or its pentasodium salt, 1-hydroxy-ethylene-1,1-diphosphonic acid or its tetrasodium salt, l ethylenediaminetetra acid (methylphosphonic acid) or its pentasodium salt, the hexapotassium salt of hexamethylenediamine tetra acid (methylphosphonic acid) and diethylenetriamine-penta acid (methylphosphonic acid) or its heptasodium acid salt.
• These products are notably marketed by MONSANTO under the DEQUEST brand.
• the questioning agent [AS], when present in the formulation, can represent up to 15%, preferably of the order of 5 to 15% of the weight of said detergent formulation.
• the latter When the latter consists of a water-soluble salt, it is generally a sodium salt.
• citric acid mellitic acid
• succinic acid and their sodium salts
• C 5 -C 20 alkyl succinic acids such as 2-dodecenylsuccinic, lauryl succinic and their sodium salts.
• salts of polyacetic acids mention may in particular be made of sodium ethylenediaminetetraacetate, nitrilotriacetate, N- (2 hydroxyethyl) -nitrilodiacetate.
• At least one surfactant is present as a detergent, advantageously in an amount on the order of 2 to 40%, preferably on the order of 10 to 30% by weight of said detergent formulation.
• the detergent formulation which is the subject of the invention can be obtained in a manner known per se, taking care to keep in the constituent (B) the amount of water associated with the silicate mentioned above (at least 33/100) ; therefore atomization type operations are not recommended.
• Said detergent formulation can be used for the preparation of a detergent medium for washing clothes, at a rate of 2 to 6 g, preferably 3 to 5 g of said formulation per liter of said medium.
• Two detergent formulations are prepared, the compositions of which are given in Table 1, by mixing all the raw materials in the form of powders in a beaker, then pouring the raw materials in liquid form onto the mixture obtained.
• the detergent and anti-scaling power of the formulations is evaluated as follows:
• the test simulates a simplified machine wash, using a tergotometer. It consists in washing test pieces of soiled fabrics in a standard and uniform manner at 40 ° C, with only the formulation to be tested at a concentration of 4 g / liter. The washing lasts 20 minutes and the detergency is evaluated by measuring the whiteness of the pieces of fabric, before and after washing, using a colorimeter.
• the tergotometer is a device made up of 4 2-liter stainless steel pots on which are fitted stirrers which are set at 100 cycles per minute (100 round trips). The pots are placed in a water tank regulated at 40 ° C. In each pot we put 1 liter of 30 ° TH hard water (diluted Contrexéville spring water).
• the 16 soiled test pieces and the 4 unsoiled test pieces are introduced one by one into the jar of the tergotometer.
• the detergent is placed on the test tubes and then cold water is introduced.
• the fact of using cold water is characterized by a decrease in the temperature of the thermostatically controlled bath. However the temperature reaches 40 ° C in less than 2 minutes. Agitation is triggered immediately after the introduction of water. After 20 minutes of washing, the water is discarded.
• the fabrics are rinsed three times with tap water, then wrung by hand and dried flat individually between two sheets of white absorbent paper.
• the fabrics are again put between two sheets of clean absorbent paper, and ironed in the freezer at a temperature close to 110 ° C.
• the measurements are made with the "LUCI 100" colorimeter before and after washing according to the "L", “a”, “b” system (scale from black to white, from green to red and from blue to yellow) to measure the power detergent for tested formulations (increased whiteness of soiled tissue pieces).
• Washing is also carried out in a tergotometer.
• the cotton used for the incrustation test is a cotton-polyamide (92% / 8%) known under the name TERRY 12A (Testfabrics).
• the incrustation rates are then determined after calcining the cotton test pieces at 950 ° C. for 3 hours.
• Example 1 exhibits cumulative primary detergency performance higher than that of the formulation of Example 2, and this at an equal or lower incrustation rate.

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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)
• Inorganic Chemistry (AREA)
• Detergent Compositions (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=9477534

Family Applications (1)

Country Status (4)

Cited By (3)

Families Citing this family (1)

Citations (6)

• 1995
  • 1995-03-29 FR FR9503673A patent/FR2732355B1/fr not_active Expired - Fee Related
• 1996
  • 1996-03-22 EP EP96400604A patent/EP0735132A1/de not_active Withdrawn
  • 1996-03-27 AU AU52789/96A patent/AU5278996A/en not_active Abandoned
  • 1996-03-27 WO PCT/FR1996/000452 patent/WO1996030479A1/fr active Search and Examination

Patent Citations (6)

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