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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/835—Mixtures of non-ionic with cationic compounds
• • 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
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/001—Softening compositions
• • 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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/38—Cationic compounds
  • C11D1/62—Quaternary ammonium compounds
• • 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
  • C11D1/66—Non-ionic compounds
  • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

• the present invention relates to detergent compositions which have very good cleaning properties and also have textile softening properties.
• the problem is believed to arise from three causes.
• the first is the ineffectiveness of most of the usual optical brighteners when applied in the presence of cationic surfactants due to the failure of the brightener to deposit upon fabrics in such surroundings and/or from an actual quenching of the fluorescence of the brightener in the presence of cationic surfactant.
• the second main cause of yellowing is build-up of the brightener itself, which in some circumstances can act as a dyestuff at visible wavelengths.
• the third cause is apparently an interaction between the cationic or nonionic- cationic surfactants and colouring matter in the water used to make up the wash baths.
• Iron content may be one relevant factor but probably organic e.g. peaty colouring matter is more usually the principal cause.
• a detergent composition which imparts a soft feel to fabrics washed therewith, which comprises:
• the preferred granular compositions according to this invention are prepared by first making spray dried carrier granules comprising all or some of the detergency builders, a low level of anionic surfactant, and other non-heat sensitive components of the composition. A moving bed of these carrier granules is then sprayed in suitable mixing equipment with a mixture of the nonionic surfactant and cationic softener. Heat sensitive solid components, e.g. bleaching agent, enzymes, are dry mixed with the carrier granules before or after the spray-on process.
• Heat sensitive solid components e.g. bleaching agent, enzymes
• the invention comprises three essential components, i.e. a nonionic detergent (A), a cationic textile softener (B), and a nonionic optical brightener (C).
• a nonionic detergent A
• a cationic textile softener B
• a nonionic optical brightener C
• Water-soluble nonionic ethoxylates constitute the principal surfactant component of the present compositions.
• Such surfactants can be broadly defined as compounds produced by the condensation of ethylene oxide groups (hydrophilic in nature) with an organic hydrophobic (lipophilic) compound, which may be aliphatic or alkylaromatic in nature. The number of ethylene oxide groups condensed with any particular hydrophobic group is adjusted to yield a water-soluble compound having a hydrophilic-lipophilic balance (HLB) of between about 8 and about 15.
• HLB hydrophilic-lipophilic balance
• Suitable nonionic detergents include:
• Preferred nonionic detergents are coconut alcohols with 6 ethoxy residues per molecule, and Dobanol 45-7 (C 14 -C 15 primary alcohol containing seven ethoxy groups/mole).
• the nonionic detergent comprises from 10% to 30%, preferably from 10% to 20% by weight of the composition.
• Any cationic softener may be used in the compositions of the invention.
• Suitable cationic softeners are the conventional substantially water-insoluble quaternary ammonium compounds, and C 8-25 alkyl imidazolinium salts.
• R 1 and R 2 represent hydrocarbyl groups of from about 10 to about 22 carbon atoms
• R 3 and R 4 represent hydrocarbyl groups containing from 1 to about 4 carbon atoms
• X is an anion such as halide, a C 2 -C 4 carboxylate, of an alkyl-or arylsulf(on)ate.
• preferred anions include bromide, chloride, methyl sulfate, toluene-, xylene-, cumene-, and benzene-sulfonate, benzoate, parahydroxybenzoate acetate, and propionate.
• quaternary softeners include ditallow dimethyl ammonium chloride; ditallow dimethyl ammonium methyl sulfate; dihexadecyl dimethyl ammonium chloride; di(hydrogenated tallow) dimethyl ammonium chloride; dioctadecyl dimethyl ammonium chloride; dieicosyl dimethyl ammonium chloride; dieicosyl methyl ethyl ammonium chloride; didocosyl ammonium chloride; di(hydrogenated tallow) dimethyl ammonium methyl sulphate; dihexadecyl diethyl ammonium chloride; dihexadecyl dihydroxyethyl ammonium methyl sulphate; di(coconutalkyl) dimethyl ammonium chloride.
• Ditallow dimethyl ammonium chloride,di(hydrogenated tallow alkyl) dimethyl ammonium chloride 'and di-(coconutalkyl) dimethyl ammonium chloride are preferred.
• the single long chained quaternary ammonium compounds of the above formula wherein R 1 is C 10 to C 22 alkyl or alkenyl, preferably C 16 to C 20 alkyl, and R 2 R 3 and R 4 are lower alkyl groups, that is C 1 to C 4 alkyl groups especially methyl, or aryl groups, and X is as defined above.
• R 1 is C 10 to C 22 alkyl or alkenyl, preferably C 16 to C 20 alkyl
• R 2 R 3 and R 4 are lower alkyl groups, that is C 1 to C 4 alkyl groups especially methyl, or aryl groups
• X is as defined above.
• two or all three of R 2 , R 3 and R 4 may together represent a heterocyclic ring.
• Some representative examples of such compounds are behenyl trimethyl ammonium bromide, oleyl dimethyl benzyl ammonium chloride, myristyl dimethyl ethyl ammonium bromide, cetyl trimethyl ammonium bromide, behenyl trimethyl ammonium methosulfate,oleyl methyl diethyl ammonium chloride, cetyl,stearyl or oleyl pyridinium chloride, behenyl pyridinium bromide, stearyl methyl morpholinium chloride, stearyl or oleyl ethyl or propyl morpholinium chloride.
• Suitable cationic surfactants can be represented by C 8-25 alkylimidazolinium salts.
• Preferred salts are those conforming to the formula; wherein R 6 is a C 1 -C 4 alkyl radical, R 5 is hydrogen or a C l -C 4 alkyl radical, R 5 is hydrogen or a C 1 -C 4 alkyl radical, R 5 is hydrogen or a C 1 -C 4 alkyl radical, R 8 is a C 8 -C 25 alkyl radical and R 7 is hydrogen or a C 8- C 25 alkyl radical.
• X is a charge balancing ion which has the same meaning as X defined in the quaternary ammonium surfactant above.
• a preferred member of this class believed to have R 6 methyl, R 7 and R 8 tallow alkyl, R 5 hydrogen, is sold under the Trade Name Varisoft 455 or 475 (Ashland Chemical Company), or Steinaquat M5040/H (Chemische Werke Rewo).
• R 10 is an alkyl or alkenyl group having from about 10 to 24, preferably 12 to 20, especially from 16 to 18 carbon atoms
• the groups R 9 which may be the same or different, each represent hydrogen, a (C 2 H 4 O) p H, or a (C 3 H 6 O) q H, or a C 1-3 alkyl group where p and q may each be O or a number such that (p + q) does not exceed 25, n is an integer from 2 to 6, preferably 3, m is from about 1 to 9, preferably from 1 to 4, most preferably 1 or 2, and X (-) represents one or more anions having total charge balancing that of the nitrogen atoms.
• Preferred compounds of this class are, most preferred, N-tallow-N,N',N'-trimethyl-l,3-propylene diamine dichloride or di-methosulphate, commercially available under the Trade Names Lilamin 540 EO-3 (Lilachem), Dinoramox SH3, Inopol ODX3 (Pierrefitte-Auby), and N-tallow-N,N,N',N',N'-pentamethyl-l, 3-propylene diamine dichloride, commercially available under the Trade Names Stabiran MS-3 (Pierrefitte-Auby); Duoquad (Armour Hess); Adogen 477 (Ashland Company).- Also suitable is the substance sold as Dinormac (Pierrefitte-Auby) or Duomac (Armour Hess) believed to.have the formula:
• Tallowyl represents predominantly C 16 and C 18 alkyl groups derived from tallow fatty acids.
• R 9 in these components is hydrogen, that the pH of the formulation be such that one or more of the nitrogen atoms is protonated.
• Other suitable cationic surfactants are disclosed in our copending European Patent Application Nos. 0000234 and 0000235 published January 10th, 1979 and incorporated herein by reference.
• Mixtures of two or more of these cationic softeners may be employed.
• Preferred cationic softeners are ditallowyl dimethyl ammonium halides or methosulphate, and imidazolinium salts e.g. Varisoft 455 or 475.
• compositions of the invention contain from 1% to 15%, preferable from 3 to 10%,by weight,of cationic softening agent. It is preferred that the weight ratio of nonionic detergent to cationic softening agent be in the range from 10:1 to 0.5:1, especially from 3:1 to 1:1.
• optical brighteners suitable for compositions of the invention are nonionic in character and are selected from the following groups;
• Nonionic benzoxazole brighteners useful in the invention have the following structural formulae :
• Suitable coumarin derivatives have the formula wherein R1 represent H, a C 1-4 alkyl or an aralkyl group, R 2 represents H, an aryl or -COOR 4 , R 3 represents -OR 4 , -N(R 4 ) 2 or NHCOCH 3 , and each R 4 independently represents a C 1-4 alkyl group.
• Some compounds of this class are 4-methyl-7-dimethyl amino coumarin, 4-ethyl-7-dimethylamino coumarin, 4-methyl-7-diethylamino coumarin, 4-isopropyl-7-dimethylamino coumarin, 4-isobutyl-7-dimethylamino coumarin, 4-propyl-7-diethylamino coumarin, 3,4-di-methyl-7-dimethylamino coumarin, 4-methyl-7-ethoxy coumarin, 4-ethyl-7-methoxy coumarin, 4-methyl-7-carboxymethylamino coumarin, 4-benzyl-7-dimethyl amino coumarin, 4-benzyl-7-dimethyl amino coumarin, 3-phenyl-7-diethylamino coumarin, 3-carboxymethoxy-4-methyl-7-dimethylamino coumarin.
• each A is selected from the group consisting of hydrogen, C 1 -c 8 alkyl, C 1 -C 8 hydroxyalkyl, C 1 -C 8 alkenyl, -(CH 2 ) n OCH 3 , wherein n is from 1 to 8, - (CH 2 ) n N(CH 3 ) 2 , wherein n is from 1 to 8, wherein x is from 2 to 12, - (CH 2 Cl 2 H 2 O) x H, wherein x is from 1 to 12, and , wherein x is from 1 to 12, -(CH2CH20)m wherein m is from 1 to 12 and y is from 1 to 12.
• each A is a C 1 -C 8 alkyl group, preferably a C 1 -C 4 alkyl group, and most preferably a methyl group.
• the A groups may be both the same (for ease in synthesizing the molecule) or may be chosen so as to be different (to make the molecule substantive to both cotton and synthetic fabrics).
• A is selected from the group defined under (c) above or where (A) 2 forms an oxazine ring containing the N atom.
• compositions may contain from about 0.001% to about 3%, preferably from about 0.01 to about 0.5%, and most preferably from about 0.02 to about 0.1% by weight of the specific nonionic optical brighteners described above.
• Suitable detergent builder salts useful in the preferred granular compositions herein can be of the polyvalent inorganic and polyvalent organic types, or mixtures thereof.
• suitable water-soluble, inorganic alkaline detergent builder salts include the alkali metal carbonates, borates, phosphates, polyphosphates, tripolyphosphates, bicarbonates, silicates, and sulfates.
• Specific examples of such salts include the sodium and potassium tetraborates, bicarbonates, carbonates, tripolyphosphates, pyrophosphates, pentapolyphos- phates and hexametaphosphates.
• Suitable organic alkaline detergency builder salts are:
• Mixtures of organic and/or inorganic builders can be used herein.
• One such mixture of builders is disclosed in Canadian Patent No. 755,038, e.g. a ternary mixture of sodium tripolyphosphate, trisodium nitrilotriacetate, and trisodium ethane-1-hydroxy-1,1-diphosphonate.
• a water-soluble material capable of forming a water-insoluble reaction product with water hardness cations preferably in combination with a crystallization seed which is capable of providing growth sites for said reactions product.
• Preferred water soluble builders are sodium tripolyphosphate and sodium silicate, and usually both are present.
• a substantial proportion, for instance from 3 to 15% by weight of the composition of sodium silicate (solids) of ratio (weight ratio Si0 2 :Na 2 0) from 1:1 to 3.5:1 be employed.
• a further class of detergency builder materials useful in the present invention are insoluble sodium aluminosilicates, particularly those described in Belgian Patent 814,874, issued November 12, 1974 incorporated herein by reference.
• This patent discloses and claims detergent compositions containing sodium aluminosilicates of the formula; wherein Z and Y are integers equal to at least 6, the molar ratio of Z to Y is in the range of from 1.0:1 to about 0.5:1 and X is an integer from about 15 to about 264, said aluminosilicates having a calcium ion exchange capacity of at least 200 mg.eq./ gram and a calcium ion exchange rate of at least about 2 grain/minute/gram.
• a preferred material is Built granular detergent compositions in accordance with the invention contain from 10-80% of builder, preferably from 20% to 70% of builder.
• compositions of the present invention also contain from 0.3%to 5% of a discolouration. inhibitor selected from
• Highly preferred materials of this type are ethoxylated tallow alcohols with from 20 to 100 ethoxy groups, especially 25 or 80 (conveniently abbreviated as TAE 25 ,TAE 80 ).
• polyethylene glycols of molecular weight from about 1,000 to 30,000, especially from 6,000 to 20,000, and polyvinyl alcohols of molecular weight from 10,000 to 20,000, preferably about 14,000, and polyoxyethylene sorbitan C 12 -C 18 fatty acid esters having 17 or more ethylene oxide residues in their constitution.
• Soil suspending agents such as sodium carboxymethyl cellulose are useful for this purpose, and it is preferred that these should be present at a level from about 0.5%to 1.5% by weight of the composition.
• methyl vinyl ether - maleic anhydride copolymers or the corresponding acids and their salts e.g. sodium salts, such as, for instance, Gantrez AN-119, Gantrez S95 (Trade Name - GAF) and the corresponding acids or salts.
• this component is used at from about 0.5% to 1.5% by weight of the composition.
• Sequestering agents effective for chelating especially ferric iron such as sodium ethylene diamine tetraacetate, diethylene triamine penta acetate, ethylene diamine tetra methylene phosphonate, diethylene triamine pentaphosphon ate,and. hydroxyethane-1,1-di-phosphonate are also useful and may function both as bleach stabilisers and as agents to inhibit yellowing caused by iron in tap water.
• Preferred agents are ethylene diamine tetra acetates, ethylene diamine tetra methylene phosphonatesor both together, especially in the form of the sodium salts.
• Suds controlling agents such as mono or diethanolamides of fatty acids as suds stabilisers, and C 16-24 soaps or fatty acids, silicones, microcrystalline waxes and mixtures thereof as suds depressants.
• proteolytic amylolytic or lipolytic enzymes, especially proteolytic.
• compositions of the present invention may be produced in a variety of forms, including liquid, solid, granular, paste, powder or substrate compositions.
• Substrate articles may be formulated according to U.S. Patent Application Serial No. 781,378, Flesher et al, filed March 25, 1977, incorporated herein by reference.
• the compositions of the present invention are formulated as liquids and contain up to about 20% of a lower alkyl (C I to C 4 ) alcohol, particularly ethanol. Liquid compositions containing lower levels of such alcohols (i.e., about 7 to 12%) tend to exhibit less phase separation than compositions containing higher alcohol levels.
• the cationic softener In making non-liquid products, it has been found that it is important, in order to achieve the best possible softening performance from the compositions of the invention, that the cationic softener .be finely and intimately dispersed.
• the cationic softener may be mixed in the form of fine solid particles with the rest of the composition, or in the case of spray dried granular products it may be included in the crutcher mix.
• the nonionic detergent and optionally the discolouration inhibitor may also be included in the crutcher mix.
• spray dried granular products it is much preferred to make carrier granules by spray drying a crutcher mix containing at least part and usually substantially all of the detergency buildeis, and the other non-heat sensitive components.
• anionic surfactant especially sodium C 9-16 alkyl benzene sulphonate
• Other anionic surfactants such as sodium C10-20 alkyl sulphates, and the corresponding alkyl ether sulphates with from 1 to 5 ethoxy groups per molecule, C 10-20 alkane sulphonates and C10-20 olefin sulphonates, and C 10-20 soaps may be employed.
• the amount of anionic surfactant should be less than the amount of nonionic surfactant and less than the stoichiometric equivalent of the cationic softener in the compositions, and it is usually from 0.1% to 5.0% by weight of the composition, especially about 0.2%to 1.5%. Larger amounts of anionic are undesirable because they impair the cleaning and the softening properties of the compositions.
• a moving bed of carrier granules in any suitable mixing equipment such as a pan granulator, a rotating drum or a fluidised bed, is sprayed with a fluid mixture comprising the nonionic detergent and the cationic softener, usually melted together, and generally having dissolved or dispersed therein, for instance, the optical brightener, the discolouration inhibitor and the methyl vinyl ether - maleic acid copolymer, and other components if convenient. It has been found to be advantageous to maintain the carrier granules, while they are being sprayed and/or afterwards at a temperature of above 35°C especially about 40°C to 75°C for a period of about % to 5 minutes, whereby the free flowing properties of the composition are improved.
• Heat sensitive solid, granular or powdery, components are dry mixed with the carrier granules either before or after spray on of the nonionic detergent-cationic softener mixture.
• compositions of the present invention are used in the laundering process by forming an aqueous solution containing from about 0.01% (100 parts per million) to about 1.0% (10,000 parts per million), preferably from about 0.02%to about 0.75%, and most preferably from about 0.2% to about 0.75%, of the detergent compositions defined herein, and agitating the soiled fabrics in that solution.
• the fabrics are then rinsed and dried.
• the compositions of the present invention yield outstanding brightening performance, without discolouringthe fabrics upon repeated washing, as well as exceptionally good'particulate and greasy/ oily soil removal, together with fabric softening, static control, colour fidelity, and dye transfer inhibition benefits, without requiring the use of a conventional fabric softening additive product.
• Granular detergent compositions of the following compositions were prepared.
• compositions were prepared by making spray dried granules comprising components (a) with some moisture, spraying these granules with a dispersion in water of components (b), and then spraying them with a molten mixture comprising components (c). If necessary, some improvements in flow properties of the product can be obtained by heating the granules after the two spray-on steps to from 37-47 0 C in a fluidised bed, fluidised by hot air, for from 1 to 5 minutes. After cooling (if necessary) the granules are dry mixed with components (d) to form the finished product.
• Compositions I, II, and III cleaned fabrics as well as a typical commercial heavy duty anionic detergent composition, and the washed fabrics were as soft as those washed with this detergent composition and treated in the final rinse with a 0.1% dispersion of a typical rinse-added textile softener.
• Fabrics washed in Composition I were less vellow than fabric washed in the same compositions except containing 0.04% of brighteners:
• Tallow alcohol - E 80 is replaced by Tallow alcohol - E 25 , polyethylene glycol (M.Wt 6000) or polyvinyl alcohol (M.Wt. 14000).
• An effective textile washing and softening composition has the formula, in parts per cent by weight;-
• a detergent composition with pronounced textile softening properties has the formula, in parts per cent by weight:-
• a textile softening heavy duty detergent has the following formula, in parts per cent by weight:- *C 12-13 primary alcohols condensed with 6.5 molar proportions of ethylene oxide.
• a granular detergent composition was prepared having the following formula;
• Fabrics repeatedly washed in each of the products of Examples IV through VII above are notably whiter than fabrics washed in similar compositions employing conventional anionic or nonionic brighteners.
• a granular detergent composition of the following formula is prepared.
• composition is prepared by making spray dried granules comprising components (a) with some moisture, spraying these granules with a molten mixture comprising components (b). After cooling (if necessary) the granules are dry mixed with components (c) to form the finished product.
• This composition cleans fabrics as well as a typical commercial heavy duty anionic detergent composition and the washed fabrics are as soft as fabrics so washed and thereafter treated in a final rinse with a 0.1% dispersion of a typical rinse added textile softener composition.
• Tinopal SWN is replaced by an equivalent weight of 4-methyl-7-dimethylamino coumarin, 4-ethyl-7-dimethylamino coumarin, 4-isopropyl-7-dimethylamino coumarin, 4-isobutyl-7-dimethylamino coumarin, 4-propyl-7-diethylamino coumarin, 3,4-di-methyl-7-dimethylamino coumarin, 4-methyl-7- ethoxy coumarin, 4-ethyl-7-methoxy coumarin, 4-methyl-7-carboxymethylamino coumarin, 4-benzyl-7-dimethylamino coumarin, 3-phenyl-7-diethylamino coumarin, or 3-carbomethoxy-4-methyl-7-dimethyl- amino coumarin.
• a liquid composition of the present invention was as follows: 1 Condensation product of C 14-15 alcohol with 7 moles of ethylene oxide, commercially available from Shell Chemical Company. 2 Condensation product of C 12-13 alcohol with 6.5 moles of ethylene oxide, commercially available from Shell Chemical Company. 3
• the brightener used herein had the formula (c) on page 14, with methyl groups constituting the substituent A.
• This composition exhibited excellent removal of particulate and greasy/oily soils and outstanding brightening performance without discolouration problems. It also delivered fabric softening, static control, color fidelity and dye transfer inhibition benefits.
• nonionic surfactant in Composition A is replaced, in whole or in part, by the condensation product of C 14-15 alcohol with 2.25 moles of ethylene oxide; the condensation product of C 14-15 alcohol with 7 moles of ethylene oxide; the condensation product of C 12-15 alcohol with 9 moles of ethylene oxide; the condensation product of C 12-13 alcohol with 6.5 moles of ethylene oxide, which is stripped so as to remove lower ethoxylate and nonethoxylated fractions; the condensation product of coconut alcohol with 5 moles of-ethylene oxide; the condensation product of coconut alcohol with 6 moles of ethylene oxide; the condensation product of C 12-15 alcohol with 7 moles of ethylene oxide; the condensation product of tallow alcohol with 9 moles of ethylene oxide; a 1:1 by weight mixture of the condensation product of C 12-15 alcohol with 7 moles of ethylene oxide and the condensation product of C 14-15 alcohol with 7 moles of ethylene oxide; and other mixtures of those surfactants.
• the brightener herein has the formula:
• Substantially similar brightening results are obtained when the methyl groups in the above structure are replaced, with C 2 , C 4 or C 8 alkyl groups, with hydrogen; with C 2 or C 8 hydroxyalkyl; with C 4 alkenyl; with-(CH 2 ) 2 OCH 3 ; with-(CH 2 ) 2 N(CH 3 ) 2 : with -(CH 2 CH 2 O) 6 H, or-(CH 2 CH 2 O) 12 H; with - or with -(CH 2 CH 2 O) 6 (CH 2 CH 2 CH 2 O) 2 H.
• Substantially similar brightening results are obtained when the methyl groups in the above structure are replaced, with C 2 , C 4 or C 8 hydroxyalkyl; with C 4 alkenyl; with -(CH 2 ) 2 0CH 3 ; with -(CH 2 ) 2 N(CH 3 ) 2 ; with-(CH 2 CH 2 O) 2 H, -(CH 2 CH 2 O) 6 H, or - ⁇ CH 2 CH 2 O) 12 H; with or with-(CH 2 CH 2 O) 6 (CH 2 CH 2 H 2 O) 2 H.
• the substituted groups may be both the same (for ease in synthesizing the molecule) or may be chosen so as to be different (to make the molecule substantive to both cotton and synthetic fabrics).

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• 1979
  • 1979-06-13 EP EP19790200302 patent/EP0006271B2/de not_active Expired
  • 1979-06-13 DE DE7979200302T patent/DE2962387D1/de not_active Expired

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