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
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2003—Alcohols; Phenols
  • C11D3/2006—Monohydric alcohols
  • C11D3/2017—Monohydric alcohols branched
  • C11D3/202—Monohydric alcohols branched fatty or with at least 8 carbon atoms in the alkyl chain
• • 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
  • C11D1/83—Mixtures of non-ionic with anionic 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
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2003—Alcohols; Phenols
  • C11D3/2006—Monohydric alcohols
  • C11D3/2017—Monohydric alcohols branched
• • 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
• • 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
  • C11D1/04—Carboxylic acids or salts thereof
• • 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
  • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
  • C11D1/146—Sulfuric acid esters
• • 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
  • C11D1/75—Amino oxides

Definitions

• the present invention relates to thickened aqueous bleaching and cleaning compositions based on hypochlorite.
• Liquid compositions comprising hypochlorite bleach and the combination of long chain amine oxides and fatty acids as a thickening agent therein are well-known in the art.
• compositions should have good cleaning properties.
• long chain amine oxides do not provide the optimum cleaning effect. Therefore, it is a first object of the present invention to provide hypochlorite based bleaching compositions with improved cleaning.
• the present invention proposes to formulate a liquid composition which comprises long chain amine oxides and fatty acids, further comprising short chain surfactants to boost cleaning and a long chain tertiary alcohol to restore viscosity.
• a further advantage of the present invention is that the stability of the bleach is not affected by the tertiary alcohol which resists the oxidation of the hypochlorite.
• Thickened bleaching compositions comprising long chain amine oxides and fully saturated fatty acids are well-known in the art.
• US 4 282 109 discloses a thickened bleach composition comprising hypochlorite and linear and branched long chain C10-C18 amine oxides as thickeners. There is no mention of short chain C6-C8 amine oxides or tertiary alcohols.
• EP 274 885 discloses thickened bleaching compositions comprising alkali metal hypochlorite and straight chain C14 amine oxide with a mixture of branched and straight chain C15 amine oxide and optionally fatty acids. There is no mention of short chain amine oxide or tertiary alcohols.
• EP 233 666 discloses a process for the manufacture of a thickened bleaching compositions comprising hypochlorite, a hypochlorite-soluble surfactant and an alkali metal salt of a fatty acid.
• the detergent actives include amine oxides, preferably lauryldimethylamine. There is no mention of tertiary alcohols.
• DE 28 37 880 covers bleaching compositions comprising alkali metal hypochlorite and mixtures of branched and linear amine oxides of varying chain length, (C5-C17) for increased viscosity.
• the compositions optionally comprise fatty acids, but there is no disclosure of tertiary alcohols.
• EP 30 401 covers thickened bleaching compositions comprising hypochlorite and a certain number of product characteristics including pH and viscosity. Mixtures of C8-C18 amine oxides and fatty acids are preferred as thickening agents. There is no disclosure of tertiary alcohols.
• compositions according to the present invention are liquid bleaching compositions having a viscosity of from 20cps to 200cps at a 50 r.p.m. shear rate and a pH greater than 12, comprising an alkali metal hypochlorite, a hypochlorite compatible long chain amine oxide and an alkali-metal salt of a fatty acid.
• Said composition further comprises a a hypochlorite compatible short chain surfactant for improved cleaning and a tertiary alcohol to restore viscosity.
• the long chain amine oxides suitable include amine oxides according to the formula R1R2R3NO, wherein R1 is a C10-C18 alkyl group and R2 and R3 are independently C1 to C3 alkyl groups and wherein the ratio of said long chain amine oxide to short chain surfactants is from 4:1 to 1.5:1.
• the tertiary alcohol is selected from R7R8R9COH, wherein R7 is a C4-C9 alkyl group, R8 and R9 are C1-C3 alkyl groups and total number of carbon atoms is from 8 to 12.
• the liquid detergent composition according to the present invention comprises an alkali metal hypochlorite, an alkali metal salt of a fatty acid and a hypochlorite compatible long chain amine oxide.
• the cleaning ability of said composition has been improved by the addition of a a hypochlorite compatible short chain surfactant and the viscosity is restored by the addition of a C8-C12 tertiary alcohol.
• an essential ingredient for use herein is a hypochlorite bleaching agent, preferably an alkali metal hypochlorite.
• a hypochlorite bleaching agent preferably an alkali metal hypochlorite.
• alkali metal hypochlorites are preferred other hypochlorite compounds may also be used herein and can be selected from calcium and magnesium hypochlorite.
• Preferred alkali metal hypochlorite for use herein is sodium hypochlorite.
• Compositions according to the present invention comprise said hypochlorite bleaching agents such that the content of active chlorine in the compositions is from 0.4% to 4%, preferably from 1% to 2%.
• Another essential component according to the present invention is the combination of a hypochlorite compatible long chain amine oxide and a fatty acid. Said combination is used as a thickening aid.
• Suitable long chain amine oxides for use herein may be chosen from amine oxides according to the formula R1R2R3NO, wherein R1 is a C10-C18 alkyl group, preferably C10 to C14 and R2 and R3 are independently C1 to C3 alkyl groups and mixtures thereof.
• Preferred long chain amine oxides for use herein are be Genaminox R LA, (available from Hoechst) and C12-C14 Aromox R DMMCO-W (AKZO). According to the present invention, said compositions may comprise from 0.6% to 3% of said long chain amine oxides.
• Suitable fatty acids for use herein are alkali metal salt of a C8-C18 fatty acid.
• Suitable fatty acids can be any C8-C18 fatty acids, preferably fully saturated fatty acids preferably a sodium, potassium or lithium salt, more preferably the sodium salt.
• Fatty acids for use herein may be selected from caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid and mixtures of fatty acids suitably hardened, derived from natural sources such as tallow, coconut oil, ground oil and babassu oil.
• Fatty acids according to the present invention may comprise from 0.2% to 2% by weight of the total composition.
• compositions according to the present invention comprise a hypochlorite compatible short chain surfactant, or mixtures thereof. All surfactants have in common that they comprise a hydrophobic portion and a hydrophilic portion.
• short chain surfactant it is meant herein surfactants which comprise a C6-C10 alkyl chain as their hydrophobic portion.
• Such short chain surfactants are accordingly those conventionally used in this field, but with a shorter alkyl chain, and can be of any type.
• suitable short chain surfactants for use herein include C6-C10 alkyl sulfates (C6-C10SO4), alkyl ether sulfates (C6-C10(OCH2CH2)eSO4), alkyl sulphonates (C6-C10SO3), alkyl succinates (C6-C10OOCCH2CH2COOZ), alkyl carboxylates (C6-C10COOM), alkyl ether carboxylates (C6-C10(OCH2CH2) e COOM), alkyl sarcosinates (C6-C10CON(CH3)R), alkyl sulpho succinates (C6-C10OOCCH(SO3M)CH2COOZ), amine oxides (C6-C10RR'NO) and betaines (C6-C10N+(CH3)2CH2COO-).
• compositions according to the present invention may comprise any of the above surfactants alone, or any combination thereof, depending on the end use envisioned.
• Preferred nonionic surfactants are amine oxides.
• Suitable short chain amine oxides for use herein may be selected from amine oxides according to the formulae R2R3R4NO, wherein R4 is a C6-C8 alkyl group, and R2 and R3 are independently C1 to C3 alkyl groups, and mixtures thereof.
• Preferred short chain anionic surfactants for use herein are C6-C10 alkyl sulfates (C6-C10SO4) and alkyl sulphonates (C6-C10SO3). Most preferred are the C6-C8 alkyl sulfates and sulphonates.
• Such short chain anionic surfactants can be made by well known sulphation or sulphonation processes followed by neutralization, but said anionic short chain surfactants are more conveniently commercially available, for instance from Rhone Poulenc under the trade name Rhodapon @ OLS, or from Witco under the trade name Witconate @ .
• Preferred short chain surfactants for use herein are dimethyloctylamine oxide, dimethylhexylamine oxide and octyl sulphate. Suitable short chain surfactants for use herein are preferably hypochlorite compatible. According to the present invention, the compositions comprise from 0.5% to 2% preferably from 1% to 1.5% of short chain surfactants.
• compositions according to the present invention comprise said long chain amine oxides and said short chain surfactants in the ratio of from 4:1 to 1:1, preferably 2:1 to 1:1 more preferably 1.5:1 to 1:1.
• compositions according to the present invention results in the decrease of said compositions viscosity. It has been found that the viscosity of the compositions can be restored by the addition of a tertiary alcohol.
• Suitable tertiary alcohols for use herein can be selected from alcohols according to the formula, R7R8R9COH, wherein R7 is C4-C9, preferably C6-C8, R8 and R9 are C1-C3 preferably methyl groups.
• the present invention comprises a viscosity restoring amount of tertiary alcohols.
• the compositions may comprise from 0.05% to 1%, preferably from 0.05% to 0.8%, more preferably from 0.05% to 0.5% of said tertiary alcohol.
• Suitable tertiary alcohols for use herein are those having from 8 to 12 carbon atoms, preferably dimethylhexylcarbinol and dimethyloctyl carbinol.
• compositions according to the present invention comprise said tertiary alcohols and said short chain surfactants in the ratio of from 0.04 to 1, preferably from 0.2 to 0.6.
• the tertiary alcohols of the present invention thicken the compositions to a viscosity of from 20cps to 200cps, preferably from 20cps to 150cps measured with a Brookfield viscosimeter RVT at a temperature of 25°C, using a number 3 spindle at 50 r.p.m.
• compositions according to the present invention are pH greater than 12, preferably greater than 12.5, more preferably greater than 12.8. This is achieved by the addition of from 0.5% to 2% of a caustic alkali.
• Suitable caustic alkalis for use herein include sodium and potassium hydroxide.
• compositions according to the present invention may further comprise as an optional ingredient other long chain surface active agents.
• Suitable long chain surface actives include alkyl sarcosinates, alkyl ether sulphates and paraffin sulphonates.
• compositions according to the present invention may also comprise a number of additional ingredients such as hypochlorite soluble and stable colourants and perfumes, and hydrotopes such as sodium xylene sulphonate.
• compositions according to the present invention are prepared by methods well-known in the art such as the methods described in GB 1 329 086.
• compositions of the present invention may be used for a variety of bleaching purposes such as bleaching hard surfaces whereby said compositions thickened nature results in longer adhesion to vertical or inclined surfaces than non-thickened bleaching compositions.
• compositions according to the present invention can be illustrated by the following examples.

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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)
• Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Detergent Compositions (AREA)

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Cited By (7)

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• 1993
  • 1993-07-23 EP EP93202187A patent/EP0635568A1/fr not_active Withdrawn
• 1994
  • 1994-07-13 WO PCT/US1994/007842 patent/WO1995003381A1/fr not_active Ceased
  • 1994-07-13 CA CA002167370A patent/CA2167370C/fr not_active Expired - Fee Related
  • 1994-07-13 AU AU73608/94A patent/AU7360894A/en not_active Abandoned
  • 1994-07-13 JP JP7505197A patent/JPH09502747A/ja active Pending

Patent Citations (3)

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