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
  • C11D3/395—Bleaching agents
  • C11D3/3953—Inorganic bleaching 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
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
• • 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
  • C11D9/00—Compositions of detergents based essentially on soap
  • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
  • C11D9/44—Perfumes; Colouring materials; Brightening agents ; Bleaching agents
  • C11D9/446—Bleaching agents

Definitions

• This invention relates to improved compositions for washing fabrics. More particularly, this invention provides a multifunctional composition which when put into a washing machine releases the various laundry ingredients in a predetermined sequential manner.
• the improved composition of this invention comprises an inner core of a dry solid bleach and contiguous therewith an outer coating of a fabric washing agent completely enclosing the bleach core.
• the invention provides a substantially dry stable composition in which the bleach content is not reduced or lost and the outer coating is not altered on standing.
• Delayed addition of bleach is not the only advantage of the present compositions; they also facilitate the use of theproper amount of bleach and provide ideal dilution thereby providing safety for fabrics. Still further, the present invention provides a dry stable composition in which solid type chlorine bleaches can be used and in which the available chlorine content is substantially unaltered on standing and additionally the stability of the outer coating of fabric washing agent is not impaired.
• a further object of the present invention is to provide cases, REFERENCE Patented Oct. 27, 1964 a composition which delays the addition of bleach to a washing solution while at the same time providing the proper amount of bleach with ideal dilution thereby affording maximum safety for fabrics.
• Another object of this invention is to provide a dry stable composition containing a solid type chlorine bleach in which the available chlorine content remains substantially unaltered on standing.
• a still further object of this invention is to provide a timely addition of bleach to a washing machine without interruption of the washing cycle.
• the present invention comprises a composition
• a composition comprising an inner core con a substantiall dr solid bleach and contiguous therewith and completely enclosing said core, sai termer coating comprising at lawmalFed from the group consisting of wa er-soluble soa s, water-soluble synthetic organic detergents, andfi'ater cong ggirom the foregoing broadly stated paragraph, it will be seen that the compositions of the present invention comprise two distinct portions: an inner core portion comprising a dry solid bleach, and an outer portion completely enclosing the bleach core comprising a fabric washing agent.
• fabric washing agent is used to designate soaps, synthetic organic detergents and water conditioners.
• the use of the present composition is simplicity itself. All that is necessary is to drop a tablet into the washing machine, close the door and turn on the machine. No further additions of laundry washing ingredients are necessary.
• the outer coating starts dissolving almost immediately in the wash water and goes completely in solution in from about 1 to about 5 minutes, the inner bleach core remaining intact until the outer coating has dissolved.
• the ingredients of the outer coating first go into solution, followed by solution of the blea'ch, which, as noted previously, permits the detergent, etc., and the bleach to work together more effectively in the washing solution.
• the present composition permits the use of an effective bleach with safety, there being no local heavy concentration of bleach which would burn the fabric in the washing machine. Still further, the present compositions provide sequential solution of the necessary laundry ingredients without interruption of the washing cycle.
• the oxygen bleaches such as the alkali metal mono persulfates, the alkali metal perborates, sodium hydrosulfite and the inorganic chlorine bleaches such as the alkali metal and alkaline earth hypochlorites
• the inner core consists essentially of a substantially dry solid bleach; however, if desired, minor amounts of innocuous materials such as a pigment (ultramarine blue), binders, etc., may be added.
• the fabric washing agent which basically is at least one material selected from the group consisting of water-soluble soap, water-soluble synthetic organic detergent, and water conditioners.
• suitable additives e.g., binders, fillers, builders,
• optical brighteners perfume, colorings, bacteriostats, etc'.', may be added to the outer coating to provide properties regarded as desirable in any particular instance.
• the outer coating can consist of soapj'or synthetic detergent or water conditioner or any combination of these materials alone or in combination with the various suitable additives.
• Illustrative of some of the various additives used by those skilled in the detergent and soap art are builders (borax, sodium sulfate, sodium carbonate, etc.), corrosion inhibitors (sodium silicate), anti-redeposition agents (carboxymethyl cellulose), fabric brighteners (fluorescent or optical pigments), perfume, fillers (talc), binders (gums, starches, dextrins), coloring, suds stabilizers and suppressors, preservatives and bacteriostats and bactericides (trichlorocarbanilide, trichlorosalicylanilide, tribromosalicylanilide). Each ingredient is selected to perform a specific function.
• the corrosion inhibitor protects the metals used in washing machines.
• the anti-redeposition agent is used to aid in preventing removed soil from redepositing on the fabric being washed.
• the suds stabilizer or suppressor aids in tailoring the sudsing characteristics of the product.
• the optical brighteners aid in maintaining fabric whiteness or brightness.
• the soap which may be employed in the outer coating, there may be enumerated the water-soluble salts of myristic, palmitic, stearic, behenic, oleic, lauric, abietic, capric, caproic, ricinoleic, linoleic, hydrogenated and dehydrogenated abietic acids, the surface active hydrolysis products of tallow, coconut oil, cottonseed oil, soybean oil, peanut oil, sesame, linseed oil, olive oil, corn oil, castor oil, and the like.
• long chain alkyl aryl sulfonates such as sodium octyl-, nonyl-, dodecyl-, decyland tetradecylbenzene sulfonates
• N-long chain acyl N-alkyl taurates such as sodium oleoyl methyltaurate, sodium palmitoyl methyl taurate, sodium or potassium lauroyl methyl taurate and the corresponding acyl ethyl taurates
• long chain alkyl oxyethylene sulfates such as sodium or potassium laurylpolyoxyethylene sulfate, sodium laurylmonooxyethylene sulfate, sodium octadecylpolyoxyethylene sulfate and sodium cetyl polyoxyethylene sulfate
• long chain alkyl aryl oxyethylene sulfates such as ammonium, sodium or potassium nonyl-, o
• monobutyl biphenyl sodium monosulfonate monobutylphenylphenol sodium monosulfonate, dibutylphenylphenol sodium disulfonate, lower alkyl sulfates and sulfonates such as sodium sulfate derivative of 2-ethyl hexanol-l, sodium 2-ethyl-l-hexenyl sulfonate, sodium isooctyl sulfonate, sodium isononyl (also triisopropylene) sulfonate, lower alkyl esters of aliphatic sulfocarboxylic acids such as sodium diamyl sulfosuccinate, sodium diisobutyl sulfosuccinate, sodium dihexyl sulfosuccinate, sodium dioctyl sulfosuccinate, sodium triamyl sulfotricarballylate, sodium triisobutyl sulf
• alkali metal and amine salts may be employed, as, for example, those with potassium, ammonium, lower alkyl amines such as methylamine, ethylamine, propylamine and isopropylamine, lower alkylolamines such as mono, di-, and triethanoland isopropanolamines, cyclic amines such as cyclohexylamine, morpholine, and pyrrolidine and the like.
• the above-mentioned detergents may be used alone or may be employed as mixtures. Additionally the detergents can be used in combination with the water-soluble soaps and water conditioners.
• water conditioner as used in the present specification and claims designates those compounds which sequester, or inactivate water hardness and aid in cleaning, and the term is fully intended to include both the inorganic and organic complexing agents, sequestering agents and chelating agents. Referring first to the organic type of chelating and sequestering agents, the ethylene diamine tetraacetic acid type and its salts are among the most effective.
• Illustrative of the inorganic water conditiofiers useful in the present invention are the zeolites (hydrated silicates of aluminum and either sodium or calcium or both), sodium carbonate, sodium phosphate, tetrasodium pyrophosphate, sodium tripolyphosphate, trisodium phosphate, sodium metaphosphate, sodium hexametaphosphate, and sodium tetraphosphate. While the sodium salts of the inorganic compounds are preferred, the other alkali metal salts such as the potassium and lithium salts may be used.
• the outer coating of the present invention can consist of each of the fabric washing agents alone or in combination with the various additives.
• the following examples are given to illustrate some of the innumerable combinations which may be used to produce coatings applicable to the present invention:
• any of the outer coatings can be used to enclose any of the dry solid bleaches.
• we use a substantially dry outer coating since this type of coating is more stable and in the instances where the inner core comprises a chlorine containing bleach this type of coating offers superior protection to the bleach and prevents loss of available chlorine on standing.
• the outer coating comprise at least one of the fabric washing agents, namely, soap, synthetic organic detergent or water conditioner.
• the various additives can be added according to the discretion of the formulator.
• the inner core of bleach and the outer coating are preferably combined in amounts of from about 1:1 to about 1:5 bleach to outer coating.
• the amounts of bleach to coating are immaterial to the present invention and may be varied according to the desires of the formulator, it only being important to the present composition that the core consist essentially of a bleach and the outer coating is contiguous therewith and completely encloses the core.
• compositions can betprepared by first compacting a bleach material and then encapsulating the compacted bleach with a coating. If desired, the outer coating can be preformed in two separate halves, each having OCH;
• the bleach can be compressed to the desired shape and then deposited in the cavity formed in one half of the coating and the other half of the preformed coating can then be pressed on top, forming a finished composition having a core of bleach and a coating contiguous therewith and completely enclosing the same.
• Another method of making the present compositions is to form one half of the coating with a cavity, fill the cavity with bleach powder, put the rest of the coating material on top and then press the entire mass to the desired shape. It is immaterial to the present invention what method is used to form the present composition as long as the finished product comprises an inner core consisting essentially of bleach and having an outer coating contiguous therewith and completely enclosing the core.
• the rates of solution of the two components can be varied, if desired, by altering the degree of pressure used in forming the finished product, or, if desired, by altering the basic composition of the outer coating.
• a substantially dry, stable, multifunctional Washing and bleaching laundry tablet for sequential introduction of, firstly, effective amounts of fabric washing agents and laundry additives and, secondly, effective amounts of bleach into a laundry washing solution, which tablet consists of (l) a solid, substantially dry, water-soluble core and (2) a solid, substantially dry, water-soluble coating contiguous with and completely enclosing said core, said core consisting essentially of a bleach selected from the class consisting of oxygen and chlorine water-soluble solid bleaches, and said coating consisting essentially of at least one water-soluble fabric washing agent selected from the class consisting of soaps, non-soap synthetic organic detergents, organic sequestering agents, and inorganic water softeners, said coating being formulated and present in an amount such that when said tablet is exposed to said laundry solution said coating requires a minimum period of time within the range of from about one to about five minutes to substantially completely dissolve, the inner core remaining intact until the outer coating has dissolved, whereby exposure and introduction of said bleach into said laundry washing solution is delayed for at least
• a substantially dry, stable, multifunctional washing and bleaching laundry tablet for sequential introduction of, firstly, effective amounts of fabric washing agents and laundry additives, and, secondly, effective amounts of bleach into a laundry washing solution, which tablet consist of (l) a solid, substantially dry, water-soluble core and (2) a solid, substantially dry, water-soluble coating contiguous with and completely enclosing said core, said core consisting essentially of a bleach selected from the class consisting of oxygen and chlorine water-soluble solid bleaches, and said coating being essentially composed of a major amount of at least one water-soluble fabric washing agent selected from the class consisting of soaps, nonsoap synthetic organic detergents, organic sequestering agents, and inorganic water softeners, and a minor amount of at least one laundry additive the laundering function of which in said laundry washing solution would be adversely affected by the substantially simultaneous introduction of said bleach, said coatingjgeing formulated and p nti ta lr lsushfiaiihegsa d table p Fo
• composition of claim 3 wherein said core contains a chlorine-containing bleach and said coating contains a fabric optical brightener.

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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)
• Detergent Compositions (AREA)

Priority Applications (11)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22440471

Family Applications (1)

Country Status (10)

Cited By (48)

Families Citing this family (3)

Citations (13)

• 0
  • BE BE612158D patent/BE612158A/xx unknown
  • DK DK359362D patent/DK359362A/da unknown
  • NL NL281834D patent/NL281834A/xx unknown
• 1961
  • 1961-08-07 US US129535A patent/US3154494A/en not_active Expired - Lifetime
  • 1961-11-15 GB GB40918/61A patent/GB993583A/en not_active Expired
  • 1961-12-06 ES ES0272730A patent/ES272730A1/es not_active Expired
  • 1961-12-12 SE SE12429/61A patent/SE303343B/xx unknown
  • 1961-12-19 DE DE1467726A patent/DE1467726C3/de not_active Expired
  • 1961-12-21 CH CH1488661A patent/CH430925A/de unknown
  • 1961-12-29 AT AT985261A patent/AT239738B/de active

Patent Citations (13)

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