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
  • C11D3/37—Polymers
  • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C11D3/3769—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
  • C11D3/3776—Heterocyclic compounds, e.g. lactam
• • 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

Definitions

• the present application relates to storage-stable liquid detergents, an aqueous brightener dispersion and their use for the preparation of these liquid detergents.
• optical brighteners in liquid detergents is generally known. They soak on the items to be washed during treatment and, due to their special light absorption / emission properties, lead to the maintenance or improvement of the original whiteness.
• EP-A-167 205 proposes to use monosulfonated stilbene triazolyl, triazine or distyrylbiphenyl brighteners.
• liquid detergents characterized in that they 0.001% to 0.2%, preferably 0.01% to 0.1% of at least one water-insoluble or poorly soluble optical brightener, - 0.001% to 0.2%, preferably 0.01% to 0.1% of at least one polymer and / or copolymer and - 0.2% to 5%, preferably 0.5 to 4%, in particular 0.5 to 1.5% of at least one highly disperse silica based on the liquid detergent included.
• disulfonic acid brighteners of the formula (VII) or (VIII) and mixtures of 1 to 10, preferably 1 to 5 parts of the compounds of formula (VII) with 10 to 1, preferably 5 to 1 parts of the compounds of formula (VIII) wherein R worin H, Cl, F, CH3 and M ⁇ has the meaning given above.
• the liquid detergents primarily contain vinylpyrrolidone polymers with an average molecular weight of 8,000 to 1,000,000, preferably 35,000 to 800,000 and in particular 35,000 to 50,000 or 600,000 to 800,000; as copolymers (polymerization product from at least 2 different monomers) are primarily 1: 4 to 4: 1, preferably 4: 1 to 1: 1, in particular 3: 2 copolymers of vinylpyrrolidone / vinyl acetate monomers or 1: 1 copolymers of vinylpyrrolidone / 3-vinylpropionic acid monomers into consideration. These have an average molecular weight of 20,000 to 100,000, preferably 45,000 to 75,000, in particular 60,000.
• Mixtures of the polymers and copolymers with one another can also be used.
• the presence of the polymers and copolymers in the liquid detergents prevents or at least reduces the tendency towards bright spots caused by the brighteners (spotting effect).
• the liquid detergent preferably contains highly disperse, hydrophilic or partially hydrophobic synthetic silica which can optionally be modified with Al2O3.
• the specific surface area is greater than or equal to 150 ( ⁇ 30) m2 / g according to BET. This component serves to stabilize the optical brightener in the liquid detergent.
• Liquid detergents are known and commercially available detergents, as are described, for example, in EP-A-167 205 or US Pat. No. 4,507,219.
• these liquid detergents contain 1 to 60% anionic, nonionic, zwitterionic and optionally cationic surfactants and 10 to 65% preferably 20 to 55% water.
• the liquid detergent according to the invention contains, in addition to the optical brightener, 3 to 50% preferably 15 to 25% anionic surfactants, 2 to 30% preferably 4 to 15% nonionic surfactants, 3 to 30% preferably 5 to 20% optionally ethoxylated (C10-C22) -Fatty acids, especially saturated (C10-C14) fatty acids such as Capric, lauric, myristic, coconut and palm kernel acid and mixtures thereof, 1 to 25% preferably 1 to 10% detergent builders and optionally 1 to 10% preferably 1 to 5% zwitterionic surfactants, 0.5 to 3% preferably 0, 7 to 2% quaternary ammonium, amine or amine oxide surfactants, and 1 to 10% customary detergent additives such as enzymes, enzyme stabilizers, antioxidants, preservatives and disinfectants, fragrances and dyes, complexing agents or sequestering agents, solvents and optionally additionally another one or more polymers and / or copolymers, which may be identical to those mentioned above.
• Useful surfactants are e.g. in U.S. 4,285,841, U.S. 3,929,678, U.S. 4,284,532 and GB 2,041,986.
• the surfactants designated as preferred in EP-A-167 205 are used.
• optionally ethoxylated C1 platz admir-C18 alkyl sulfates are used as anionic surfactants, e.g. in the form of the triethanolamine salts, C10-C15 alkylbenzenesulfonates or mixtures thereof and as nonionic surfactants, condensation products from one mole of (C10-C15) fatty alcohol with 3 to 8 moles of ethylene oxide.
• Suitable detergent builders are the preferably polycarboxylated compounds mentioned in US Pat. Nos. 4,321,165 and 4,284,532, such as citric acid or citrates.
• the production of the liquid detergents according to the invention is characterized in that an aqueous dispersion a) which contains the abovementioned water-insoluble or sparingly soluble optical brighteners and one or more of the abovementioned polymers and / or copolymers with a customary liquid detergent formulation b) which may contain further polymer and / or Can contain copolymer and the highly disperse silica c) is added and homogenized.
• Components a), b) and c) can be incorporated in different phases of the production of the liquid detergent according to the invention, the order of additions being able / should be adapted to the given detergent compositions and apparatus.
• the brightener dispersion a) is preferably initially introduced, part of the customary liquid detergent b) and component c) are added and the mixture is homogenized with the rest of b).
• component c) can also be incorporated beforehand into liquid detergent b), which is then homogenized with the aqueous brightener dispersion a).
• liquid detergents according to the invention are stable on storage for several months and can be used for cleaning fabrics. No visually detectable light spots are formed.
• the application also relates to the aqueous dispersion a) which comprises 1 to 25%, preferably 5 to 15%, of the water-insoluble or poorly soluble optical brighteners mentioned and 1 to 25%, preferably 5 to 15%, of the polymers and / or copolymers mentioned and, if appropriate, 0.1 up to 15%, preferably 0.1 to 10%, contains other auxiliaries such as nonionic surfactants, anionic surfactants, preservatives and antifreezes.
• auxiliaries such as nonionic surfactants, anionic surfactants, preservatives and antifreezes.
• the brightener (s) are mixed with the polymer (s) and / or copolymers and the corresponding amount of water and, if appropriate, auxiliaries and mixed in a suitable grinding apparatus, e.g. ground with quartz sand until the particle size is less than 5 ⁇ m, preferably ⁇ 1 ⁇ m.
• the mixture is ground with quartz sand until the particle size is less than 1 ⁇ m (median).
• the result is a slightly viscous liquid detergent that is stable for several months.
• A according to example 2.
• B as A, but without silica (replaced by appropriate proportions of water), the brightener stock dispersion being added directly to the entire rest of the formulation with vigorous stirring.
• C like A, but without PVP and without silica (replaced by appropriate proportions of water), the brightener stock dispersion being added directly to the entire rest of the formulation with vigorous stirring.
• detergent formulations B and C form a sediment within a few hours, which can only be redispersed by very intensive and vigorous shaking after 1 day of storage at room temperature.
• Detergent formulation A is stable even after 5 weeks.
• a bleached cotton fabric is in a liquor ratio of 1:20 for 15 min. washed in a 30 ° C aqueous liquor which contains 3 g of one of the detergent formulations A, B or C per liter. The cotton fabric is then rinsed in flowing water for 20 seconds and dried in a drying cabinet at 70 ° C. The degree of whiteness achieved is determined spectrophotometrically (Zeiss RFC 3) using the Ganz method. Results after washing 5 times: at a washing temperature of 30 ° C Whiteness Formulation A 182 Formulation B 184 Formulation C 176
• liquid detergents obtained in this way are stable over several months or have only a slight serum formation, which can be easily rehomogenized by gentle shaking, and show good whitening effects and no or only slight formation of light spots.
• G, H and K are produced, which are the optical brighteners of the formula contain.
• K is obtained as a good, thin, storage-stable dispersion; G and H show rapid sedimentation.

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)
• Detergent Compositions (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=4237808

Family Applications (1)

Country Status (4)

Cited By (7)

Families Citing this family (9)

Citations (6)

Family Cites Families (12)

• 1989
  • 1989-06-29 EP EP19890810494 patent/EP0350449A3/fr not_active Withdrawn
  • 1989-07-07 JP JP1174364A patent/JPH0273900A/ja active Pending
  • 1989-07-07 AU AU37969/89A patent/AU612049B2/en not_active Ceased
• 1991
  • 1991-05-20 US US07/704,660 patent/US5167871A/en not_active Expired - Fee Related

Patent Citations (6)

Also Published As

Similar Documents

Legal Events