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
  • C11D3/40—Dyes ; Pigments
  • C11D3/42—Brightening agents ; Blueing agents
• • 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
  • C11D3/39—Organic or inorganic per-compounds

Definitions

• the application relates to storage-stable laundry detergents which, in addition to at least one peracid or its salts, contain at least one specific optical brightener of the stilbene type, and to their use for washing textiles.
• M in formula (I) is, for example, alkaline earth metal such as magnesium or calcium, but preferably alkali metal such as lithium, sodium, potassium and optionally substituted ammonium such as ammonium, mono-, di- or triethanol-ammonium, mono-, di- or tripropanol -ammonium or tri- or tetramethyl-ammonium.
• alkaline earth metal such as magnesium or calcium
• alkali metal such as lithium, sodium, potassium
• ammonium such as ammonium, mono-, di- or triethanol-ammonium, mono-, di- or tripropanol -ammonium or tri- or tetramethyl-ammonium.
• optical brighteners of the formulas I to V are known and can be prepared by known methods.
• the peracids or their salts are organic or inorganic compounds described in the literature or on the market which bleach textiles even at temperatures from 20 ° C.
• organic peracids such as, for example, mono- or polyacids with alkyl chains of at least 3, preferably 6 to 20 carbon atoms, but especially diperoxydicarboxylic acids with 6 to 12 carbon atoms, such as diperoxyazelaic acid, diperoxysebacic acid and / or diperoxyphthalic acid.
• very effective, inorganic peracids such as persulfate and / or percarbonate can also be used.
• the amount of organic peracids to be used is preferably 0.5% to 10%, in particular 1% to 5% and inorganic peracids preferably 1% to 30%, in particular 10% to 20%, based on the total detergent weight and, if appropriate, in Combination with small amounts of compounds that increase the bleaching effect of the peracids.
• the peracids are added to the detergent by dry mixing e.g. with the help of automatic screw dosing systems and / or fluidized bed mixers.
• the detergents are dry detergents of conventional compositions.
• they contain, for example, anionic, nonionic, amphoteric and / or cationic surfactants, builders such as, for example, pentasodium tripolyphosphate or substitute products such as phosphonates, polycarboxylates, acrylic-maleic copolymers, zeolites, nitrilotriacetate, ethylenediaminotetraacetate , Dirt suspending agents such as sodium carboxymethyl cellulose, salts for adjusting the pH such as alkali or alkaline earth silicates, foam regulators such as soap, salts for adjusting the spray drying and granulate properties such as sodium sulfate, perfumes, and optionally antistatic and plasticizers, enzymes, photobleaches, pigments and / or shading agents.
• these components should be stable with respect to the bleaching system used.
• a granulate A - hereinafter also referred to as "basic detergent A" - is produced by drying and granulating a slurry consisting of approx. 1 part water and 1 part detergent of the following composition: 84 g linear dodecylbenzenesulfonate 31 g tallow alcohol tetradecane ethylene glycol ether (14 AeO) 37 g Na soap (mainly from behenic acid and C14-C20) 458 g Na tripolyphosphate 79 g Na silicate 20 g Mg silicate 12 g carboxymethyl cellulose 2 g ethylenediamine tetraacetate 222 g Na sulfate 1 g optical brightener (FWA) according to the formula (II) - (V).
• FWA optical brightener
• Samples of the detergent W thus obtained are: - On the one hand to check the initial value, determined immediately by extraction and spectrophotometric extinction measurement for the FWA content, (theoretically: 0.1% FWA based on the weight of the basic detergent A) - On the other hand stored in commercial washing powder-compatible cardboard packages, ie with a coating, under selected and controlled temperature and humidity conditions for certain periods of time. After storage, the FWA content of each detergent is determined immediately. The difference from the initial value, expressed as a percentage, is a measure of the stability of the FWA against the corresponding bleach in the washing powder.
• the FWA determination mentioned above is carried out as follows;
• the washing powder is homogenized well by grinding and 1 g of it is mixed with 200 ml of solvent consisting of 9 parts of dimethyl sulfoxide and 1 part of water and stirred at room temperature for 30 minutes. Then it is centrifuged for 30 minutes.
• a sample of the clear solution thus obtained is transferred with a pipette into a 1 cm quartz cuvette and its absorbance in the UV range is measured at the absorption maximum against a standard solution of the respective FWA.
• the extinction is proportional to the FWA concentration.
• the reproducibility of the results is approx. ⁇ 1% if the test conditions are observed exactly the same.
• the percentage FWA loss is determined according to the conditions described above. Storage is in a closed package, at 20 to 25 ° C. After 6 months the FWA loss is:

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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 (3)

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Family Applications (1)

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Cited By (4)

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• 1988
  • 1988-11-23 ES ES88119488T patent/ES2065329T3/es not_active Expired - Lifetime
  • 1988-11-23 DE DE3852380T patent/DE3852380D1/de not_active Expired - Fee Related
  • 1988-11-23 EP EP88119488A patent/EP0317979B1/fr not_active Expired - Lifetime
  • 1988-11-24 JP JP63294817A patent/JP2634452B2/ja not_active Expired - Lifetime
  • 1988-11-24 ZA ZA888796A patent/ZA888796B/xx unknown
  • 1988-11-25 AU AU25934/88A patent/AU623869B2/en not_active Ceased
  • 1988-11-25 BR BR888806214A patent/BR8806214A/pt not_active IP Right Cessation

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