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
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/28—Heterocyclic compounds containing nitrogen in the ring
• • 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
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/30—Amines; Substituted amines ; Quaternized amines
• • 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
  • C11D3/38—Products with no well-defined composition, e.g. natural products
  • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
  • C11D3/38663—Stabilised liquid enzyme compositions

Definitions

• the present invention relates to a detergent composition for the pretreatment of textiles, in particular to a liquid stain remover, which is especially suitable for local pretreatment of stains before washing the laundry in the conventional manner.
• a liquid stain remover which is especially suitable for local pretreatment of stains before washing the laundry in the conventional manner.
• the stains are increasingly given a pretreatment with a liquid stain remover, a so-called pre-spotter. As a result of this pretreatment the stains are better removed in the conventional washing treatment.
• nonionic surfactant e.g., ethoxylated nonyl phenyl
• sodium citrate sodium citrate
• products based on alkanes and isopropyl alcohol to which water and ethoxylated fatty alcohol are added.
• the object of the invention is to provide a universal detergent composition in liquid form for the pretreatment of textiles, which is suitable for substantially all types of stains, and which has a clearly improved activity over the known pretreatment compositions.
• This invention therefore comprises a detergent composition in liquid form for the preatreatment of textiles, comprising, calculated on the total detergent composition:
• the composi­tion according to this invention has an excellent cleansing activity against all types of different stains.
• the composition should contain the prescribed amount of water in combination with enzyme, surfactant, and isopropanol-amine. The use of this combination results in an adequate removal of stains, for which the cohesion parameter of isopropanol­amine in the system, combined with the other active components, is likely to be responsible.
• the cohesion parameter is a measure of a substance property which meets with increased use (see, e.g., A.F.M. Barton "Handbook of solubility parameters and other cohesion parameters", 1983, CRC Press, Inc. ISBN 0-8493-3295-8).
• the cohesion of a substance is connected with the inter­molecular forces, such as dispersion forces, dipole inter­action, induced dipole interaction, hydrogen bonds etc., in brief the van der Waals forces which effect the cohesion of a substance.
• the cohesion parameter is calculated as the root of the quotient of the energy content per mole and the molar volume. Substances having the same cohesion parameter excellently dissolve in each other.
• the value of the cohesion parameter can be determined by way of experiment, but can also be calculated from the atom group composition of the molecule (see Barton's above-cited Handbook, chapter 6).
• the detergent composition according to this invention may consist of the above-mentioned components, but a polyglycol and/or a polyglycol ether are preferably also incorporated in the detergent composition, because this will lead to further improved results.
• glycol and/or glycol ether employed are preferably dipropylene glycol and/or hexylene glycol and/or ethylene glycol, more in particular a mixture of these two compounds in a weight ratio of 0.5 to 2.
• stain remover components promoting the removal of a specific type of stains.
• oleic acid may be added, and more in particular, metal salts can be bound by using nitrilotriacetic acid.
• the total stain removing activity can be intensified by using, e.g., urea in the solution.
• the stain remover has a pH value ranging from 5 to 12, and more in particular from 6 to 9. At such a pH the activity is most satisfactory.
• This pH can be obtained by first dissolving all the components and then adapting the pH by addition of organic acid.
• organic acids are citric acid, formic acid and benzoic acid.
• the surfactant may be an anionic or a nonionic surfactant. Since according to the invention the content of metal ions in the detergent composition is preferably limited as much as possible in order to obtain a better cleansing effect and a stable product, the use of a nonionic surfactant, such as an alkanol ethoxylate, e.g., fat alcohol ethoxylate, is preferred. Preferably, use is made of a nonionic surfactant based on an ethylene oxide adduct having an average of preferably 7-9 ethoxylene oxide units per molecule. The amount of surfactant ranges from 0.01 to 5 wt.%, and 0.1-2 wt.% based on the total detergent composition gives the most satisfactory results. It is also possible to use an anionic surfactant. In view of the requirement of introducing as few metal ions as possible into the system, the cation preferably employed is a nitrogen base. Suitable nitrogen bases are amines, such as ethanolamine.
• the content of metal ions in the detergent composition preferably does not exceed 0.1 wt.%. At higher contents problems occur with the stain removing activity of the detergent composition.
• a sequestering agent may be incorporated in the detergent composition, such as nitrilotriacetic acid, in order to bind calcium and magnesium ions with the wash water.
• the amounts of sequestering agent may vary within wide limits. Suitable limits range from 0.1 to 4 wt.%.
• Enzyme concentrates are used in conventional amounts of from 0.001 to 2.0 wt.% based on the total weight.
• Suitable enzymes are selected from the group consisting of proteolytic enzymes, lipolytic enzymes, cellulytic enzymes, and amylytic enzymes. In general, proteolytic enzymes or proteases are preferred. It is also possible, however, to use a combination of lipolytic enzymes, cellulytic enzymes, and amylytic enzymes. These enzymes may be used in pure form, or as enzyme preparation.
• the detergent composition according to this invention may also contain other additives which may be present in amounts of maximally 5 wt.%. Special examples thereof are perfumes, colorants, bleaching agents, and thickening agents.
• the detergent composition according to this invention can be simply composed by dissolving the different components to be used. It is possible to bring the stain remover into paste form by adding gelling or paste-forming components in such an amount as to obtain a processable paste. This can be appropriately spread on the stain.
• compositions were compared with each other for activity with respect to stain removal.
• Basic composition Hexylene glycol 10.0% Ethylene glycol 10.0% Enzyme concentrate (protease) 0.5% Benzoic acid 0.1% Formic acid up to about 2.5% Aminoalkanol 4.0% Water up to 100 %.
• PK SUNAK EMPA 101 KREFELD EMPA 116 EMPA 111 AVERAGE only washing 0 0 0 0 0 0 0 0 0.0 basis with morpholine 12 2 -1 -2 -2 10 1 4 2.9 basis with monoethanolamine 13 0 5 -1 -1 12 1 5 4.3 basis with 1-aminopropanol-2 15 4 3 -1 -1 9 2 6 4.6 basis with 3-aminopropanol 12 1 2 0 -1 13 1 8 4.4 basis with diethanolamine 13 4 2 -2 -1 9 1 6 3.8 basis with triethanolamine 9 4 3 -4 -1 14 1 8 4.4 basis with 3-aminopropanediol 13 12 7 -1 0 12 1 -9 4.6
• Example 2 and comparative example.

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Citations (4)

• 1989
  • 1989-02-03 NL NL8900267A patent/NL8900267A/nl not_active Application Discontinuation
• 1990
  • 1990-02-02 EP EP90200237A patent/EP0383373A3/de not_active Ceased
  • 1990-02-02 NO NO90900497A patent/NO900497L/no unknown
  • 1990-02-02 AU AU49038/90A patent/AU622520B2/en not_active Ceased
  • 1990-02-03 JP JP2365090A patent/JPH02289698A/ja active Pending

Patent Citations (4)

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