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
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/29—Sulfates of polyoxyalkylene ethers
• • 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
  • C11D3/3956—Liquid compositions

Definitions

• This invention is aimed at manufacturing a whitening composition with a metal alkalinic hypochlorite base and the process used to obtain this. These compositions are used in the fields of hygiene and disinfection.
• compositions with metal alkalinic hypochorite bases have been acreditted due to the fact that they are remarkably viscous and, therefore, are appropriate for the treatment of not only horizontal and slanted surfaces but also for vertical surfaces since the viscosity of these compositions means that contact between them and the surface to be treated is of much longer duration than that of fluid compositions which rapidly "run" from these surfaces.
• the predominant surface active agent used to date has been amine oxide, mixed with other surface active agents, which are generally anionic.
• compositions recognised by State of the Art prior to this invention have the disadvantage of giving viscosity levels of 200 centipoises only where their ionic strength is in the region of 4, this being achieved when the alkalinic hypochlorite concentration is in the region of 8 to 9% in weight terms.
• concentrations which have, in weight terms, 8 to 9% of alkalinic hypochlorites have a very high decomposition power on organic products such as surface active agents and hydrotopes, thereby noticeably reducing the stability of the product in relation to its active chlorine content.
• organochlorinated substances absorbable organic halogenes
• AOX absorbable organic halogenes
• This invention has a remedy for all and each one of these disadvantages given that it is based on the use of one sole surface active agent, with secondary surface active agents being used in a given case.
• the concentration level of organochlorinated compounds is reduced drastically to the same concentration as that of the surface active agent such as in the case of amine oxide, and this reduction can reach values of 0.7 ppm. In this way the sewage waters originating from the usage of these compositions are more compatible with environmental protection.
• viscosity levels in the region of 700 to 800 centipoises are achieved, with chlorine concentrations lower than those of the compositions recognised by State of the Art, specifically in the region of 3 to 5% in weight terms, with a corresponding ionic strength of 1 to 2.
• compositions are more stable in relation to hypochlorite than those State of the Art compositions and thereby the finished product is more stable and has less inherent risk of accident.
• the viscosity level remains stable with the passing of time.
• Another advantage of the whitening compositions, according to the invention, is that there are no hydrotopes which can be dissolved by the surface active agent used.
• compositions according to the invention are that there is no nitrogen in the molecular structure of th surface active agents, thereby avoiding the risk of the formation of chloramines.
• compositions with an alkalinic hipochlorite base contain one predominant surface active agent, of a determined nature, and at concentration levels which move between determined margins, totally eliminating the use of amine oxides.
• the whitening composition with a alkalinic hypochlorite base is made up of:
• the preferred anionic surface active agents are alkylether sulphates with alkalinic cation, which specifically have 2 to 4 units of ethylene oxide and, preferably, 2 to 3 units of ethylene oxide.
• the neutral salt which forms a part of the whitening composition with an alkalinic hydroxide base is sodium chloride.
• compositions will preferably achieve viscosity levels of up to 800 centipoises at 20°C, measured by a brookfield viscositimeter, RVT model, with a no. 1 or no. 2 spindle at 20 r.p.m.
• the whitening compositions with an alkalinic hypochlorite base can contain secondary quantities of oxylenic and non-oxylenic anionic surface active agents, such as saturated fatty acid soaps, alkyl sulphates, alkyl sulphonates, sarcosinates and cumene sulphonates, xylene sulphonates, betaines, sulphosinates, alkylolinoleics and, eventually, non ionics of the oxylenic fatty alcohol or oxylenic nonyl phenol type, with a maximum number of 30 mols of etylene oxide.
• oxylenic and non-oxylenic anionic surface active agents such as saturated fatty acid soaps, alkyl sulphates, alkyl sulphonates, sarcosinates and cumene sulphonates, xylene sulphonates, betaines, sulphosinates, alkylolinoleics and, eventually, non
• these can contain an alkalinic metal compound, such as a caustic hydroxide like sodium hydroxide or potassium hydroxide, preferably, however, sodium hydroxide, in quantities whereby the pH value of the final composition is between 12.5 and 14 approximately.
• an alkalinic metal compound such as a caustic hydroxide like sodium hydroxide or potassium hydroxide, preferably, however, sodium hydroxide, in quantities whereby the pH value of the final composition is between 12.5 and 14 approximately.
• the whitening compositions according to the invention can contain additives and auxilliary products which are usual in this type of mixture, such as perfumes, optical whiteners and colourants, in a proporation of 0.01 to 0.5% in weight terms.
• the optical whitener can be of the phorwhite BHC 766 type, which is a derivate of the acid 4.4′ - bis-­(1,2,3-triazolyl)-(2-)-stilbene-2,2-sulphonated, in the form of potassium salt.
• the whitening composition with an alkalinic hypochlorite base is prepared by mixing a solution of metal alkalinic hypochlorite with an anionic surface active agent or with a mixture of surface active agents in which the predominant part is an anionic surface active agent, preferably an alkalinic metal alkylether sulphate, with a neutral salt and, in a given case, finally the additives and auxilliary agents which are usual in this type of mixture, such as perfumes, which can be chosen from amongst a great variety of useable perfumes from monoterpenic, monocyclic and bicyclic alcohols and their esters with aklanoic acids having2 to 3 carbon atoms such as isoborneol, dihydroterpineol and isobornyl and dihydroterpinyl acetates or similar, as indicated in Spanish patent 554.709, in the name of the same applicant.
• optical whiteners can be added, together with perfumes and pigments such as copper phthalocyamines and ultramarine which are stable in these mixtures, and an alkalinising agent to regulate the pH value, such as sodium or potassium hydroxide, giving a final pH value of between 12.5 and 14 in the mixture.
• a low level of agitation, decantation and filtration to obtain a product which is viscous and free of foreign particules and/or any type of aglomerate.
• the order in which the components are mixed is arbitrary, however, it is preferable to add the rest of the components to the alkalinic hypochlorite solution, either separately or in any combination, by means of a low level of gradual agitation, followed by an eventual decantation process and/or filtration and final packaging.
• the installation used to carry out this process according to the invention are of the usual type used for this kind of operation and the work is usually carried out at room temperature.
• an aqueous solution of sodium hypochlorite is placed, with an active chlorine content which varies between 3 and 7% in weight terms and a pH value of between 13.0 and 13.5, and to this solution is added an alkalinic metal alkylether sulphate, specifically Pulcra's Montosol PL 18, which is a natural alcohol with a linear chain of 12 to 14 carbon atoms in a proportion of 70:30, and an average etylene oxide content of 2.3 mols per alcohol mol, sulphated and neutralised with sodium salt, followed by the addition of the other components and, in a given case, decantation and filtration.
• an alkalinic metal alkylether sulphate specifically Pulcra's Montosol PL 18, which is a natural alcohol with a linear chain of 12 to 14 carbon atoms in a proportion of 70:30, and an average etylene oxide content of 2.3 mols per alcohol mol, sulphated and neutralised with sodium salt
• compositions are prepared in accordance with the general formula and the components and proportions are as shown in table I below.
• an aqueous solution of sodium hypochlorite is placed, with an active chlorine content which varies between 3 and 7% in weight terms and a pH value of betwen 13.0 and 13.5, and to this solution is added an alkalinic metal alkylether sulphate, specifically Henkel KGna's Texopon N-70, which is a natural alcohol with a linear chain of 12 to 14 carbon atoms in a proportion of 70:30, and an average ethylene oxide content of 2.0 mols per mol of alcohol, sulphated and neutralised with a sodium salt, followed by the addition of other other components and, in a given case, decantation and filtration.
• an alkalinic metal alkylether sulphate specifically Henkel KGna's Texopon N-70, which is a natural alcohol with a linear chain of 12 to 14 carbon atoms in a proportion of 70:30, and an average ethylene oxide content of 2.0 mols per mol of alcohol, sulphated and
• compositions are prepared in accordance with the general formula and the components and proportions are as shown in table II below.
• an aqueous solution of sodium hypochlorite Into a tank which can be agitated an aqueous solution of sodium hypochlorite is placed, with an active chlorine content which varies between 3 and 7% in weight terms, and a pH value of between 13.0 and 13.5, and to this solution is added an alkalinic metal alkylether sulphate, specifically Pulcra's Montosol PL 18, which is a natural alcohol with a linear chain of 12 and 14 carbon atoms in a proportion of 70:30 and with an average etylene oxide content of 2.3 mols per mol of alcohol, sulphated and neutralised with a sodium salt together with Niox AC-91, which is of 30% cocodimethylmine, followed by the addition of the other components and, in a given case, decantation and filtration.
• an alkalinic metal alkylether sulphate specifically Pulcra's Montosol PL 18, which is a natural alcohol with a linear chain of 12 and 14 carbon atoms in
• compositions are prepared in accordance with the general formula and the components and proportions are as shown in table III below.

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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)
• Agricultural Chemicals And Associated Chemicals (AREA)

Priority Applications (1)

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Publications (3)

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Cited By (11)

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• 1988
  • 1988-05-05 ES ES8801389A patent/ES2007221A6/es not_active Expired
  • 1988-11-28 DE DE3889217T patent/DE3889217T2/de not_active Expired - Lifetime
  • 1988-11-28 EP EP88500116A patent/EP0340371B1/fr not_active Expired - Lifetime
  • 1988-11-28 AT AT8888500116T patent/ATE104697T1/de not_active IP Right Cessation
• 1989
  • 1989-05-03 PT PT90455A patent/PT90455B/pt not_active IP Right Cessation
  • 1989-05-03 DK DK219189A patent/DK219189A/da not_active Application Discontinuation

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