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
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/001—Softening compositions
  • C11D3/0015—Softening compositions liquid
• • 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
  • 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
  • C11D1/662—Carbohydrates or derivatives
• • 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
  • C11D1/667—Neutral esters, e.g. sorbitan esters

Definitions

• the present invention relates to a fabric softening composition, in particular the invention relates to aqueous dispersions of fabric softening compositions comprising a water insoluble quaternary ammonium material and a nonionic stabilising agent suitable as rinse-added fabric softener compositions.
• Rinse added fabric softeners are known.
• Such compositions contain a water insoluble quaternary ammonium fabric softening agent dispersed in water at a level of softening agent up to about 7 wt%, in which case the compositions are considered dilute, or at levels from 7 wt% to 50 wt%, in which case the compositions are known as concentrates .
• EP 0 331 237 discloses the use of hydrophobically modified nonionic cellulose ether for use as a thickener for fabric conditioning compositions containing quaternary ammonium cations.
• Rj, R 2 and R- are each an alkyl or hydroxyalkyl group containing from 1 to 4 carbon atoms, or a benzyl group, R 4 and R are each alkyl chains containing from 11 to 23 carbon atoms and X " is a water soluble anion.
• EP 280 550 and EP 507 478 discloses the use of selected nonionic stabilising agents to overcome the poor stability.
• many nonionic stabilising agents create a further problem in that their presence destroys the viscosity of these fabric softening compositions.
• nonionic stabilising agents do not destroy the viscosity of fabric softening compositions containing a biodegradable quaternary ammonium material.
• the present invention relates to a fabric softening composition
• a fabric softening composition comprising: a) a water insoluble, quaternary ammonium material comprising one ester link and two C 12-28 alkyl or alkenyl groups;
• nonionic stabilising agent is a sucrose ester or an alkyl polyglucoside.
• a water insoluble, quaternary ammonium material having at least one ester link and two C 12-28 alkyl or alkenyl groups
• a nonionic stabilising agent which is either a sucrose ester or an alkyl polyglucoside
• the present invention is a way of controlling the viscosity of a fabric conditioner composition containing a biodegradable quaternary ammonium material and a nonionic stabilising agent.
• Suitable nonionic stabilising agents include the sucrose esters such as sucrose distearate and sucrose monostearate, and the alkyl polyglucosides such as stearyl monoglucosides and stearyl triglucoside.
• this invention is thought to operate in that the interaction of the hydrogen bonding elements of the molecules of the nonionic stabilising agent are essential to maintain a vesicular structure.
• a vesicular structure in the context of this invention can be defined as a spherical structure having onion ring shaped bilayers. The presence of such vesicular structures are an important factor in the formation of a composition with a commercially acceptable viscosity.
• the preferred level of nonionic stabilising agent present is 0.1 to 2.5 % by weight.
• sucrose esters Most preferred nonionic stabilising agents are the sucrose esters.
• the sucrose esters have the additional benefit that they impart additional softening benefits over the cationic softening agent .
• suitable sucrose esters include the Crodesta (Trademark (ex Croda) ) series. Crodestas are sucrose esters esterified with 70/30 mixture of stearic/palmitic acid to form a mixes of mono-ester, di-ester and triester. According to the manufacturer the levels of mono-ester are as follows:
• the fabric softening compound is suitably a substantially water insoluble quaternary ammonium material comprising a polar head group and two alkyl or alkenyl chains each having an average chain length greater than or equal to C 14 , and at least one ester group.
• the fabric softening compound of the invention has two long chain alkyl or alkenyl chains, each having an average chain length greater than or equal to C 16 Most preferably at least 50% of each long chain alkyl or alkenyl group has a chain of C ⁇ e
• the long chain alkyl or alkenyl groups of the fabric softening compound are predominantly linear.
• the fabric softening compounds used in the compositions of the invention are molecules which provide excellent softening, and characterised by a chain melting -L ⁇ to LO - transition temperature greater than 25°C, preferably greater than 35°C, most preferably greater than 45°C.
• This L ⁇ to L ⁇ transition can be measured by DSC as defined in "Handbook of Lipod Bilayers, D Marsh, CRS Press, Boca Raton Florida, 1990 (Pages 137 and 337) .
• Substantially insoluble fabric softening compounds in the context of this invention are defined as fabric softening compounds having a solubility less than 1 x 10° wt% in demineralised water at 20°C.
• the fabric softening compounds Preferably have a solubility less than 1 x 10 " X
• the fabric softening compounds have a solubility at 20°C in demineralised water from 1 x 10 "8 to 1 x 10 "6 .
• the fabric softening compound is a water insoluble quaternary ammonium material which comprises a compound having two C 12 _ ⁇ a alkyl or alkenyl groups connected to the molecule via at least one ester link. It is more preferred if the quaternary ammonium material has two ester links present.
• An especially preferred ester-linked quaternary ammonium material for use in the invention can be represented by the formula:
• each Rl group is independently selected from C ⁇ alkyl, hydroxyalkyl or C 2-4 alkenyl groups; and wherein each R- group is independently selected from C 8 _ 28 alkyl or alkenyl groups;
• X " is any suitable anion. 0 0
• T is -0-C- or -C-0-; and n is an integer from 0-5.
• Di (tallowyloxyethyl) dimethyl ammonium chloride is especially preferred.
• a second preferred type of quaternary ammonium material can be represented by the formula :
• R ⁇ X ⁇ n and R L are as defined above.
• Preferred materials of this class such as 1,2 bis [hardened tallowoyloxy] -3- trimethylammonium propane chloride and their method of preparation are, for example, described in US 4 137 180 (Lever Brothers) .
• these materials comprise small amounts of the corresponding monoester as described in US 4 137 180 for example 1-hardened tallowoyloxy-2-hydroxy-3- trimethylammonium propane chloride.
• the quaternary ammonium compound is biodegradable.
• Biodegradable in the context of this invention should be interpreted as meaning degrades to materials that are not known to be harmful to the environment .
• the ratio of quaternary ammonium material to nonionic stabilising agent is in the range from 5:0.5 to 5:0.1.
• the composition may also contain long chain fatty acid material for example C 8 - C 2i alkyl or alkenyl monocarboxylic acids or polymers thereof.
• long chain fatty acid material for example C 8 - C 2i alkyl or alkenyl monocarboxylic acids or polymers thereof.
• saturated fatty acids are used, in particular hardened tallow C 16 - C 18 fatty acids.
• the fatty acid is non-saponified, more preferably the fatty acid is free for example oleic acid, lauric acid or tallow fatty acid.
• the level of fatty acid material is preferably more than 0.1%, more preferably more than 0.2% by weight. Especially preferred are dilutes in which the fatty acid material is present from 0.25 wt% to 20 wt%.
• the weight ratio of quaternary ammonium compound to fatty acid material is preferably from 1:10 to 10:1.
• the viscosities of these fabric compositions lie in the range from 15 mPa.s to 120 mPa.s at a shear rate of 110s '1 .
• compositions of the invention preferably have a pH of more than 2, more preferably between 2 and 5.
• composition can also contain one or more optional ingredients, selected from the group consisting of non- aqueous solvents, pH buffering agents, perfumes, perfume carriers, fluorescers, colorants, hydrotopes, antifoaming agents, antiredeposition agents, enzymes, optical brighteners, opacifiers, antishrinking agents, drape imparting agents, antistatic agents and ironing aids.
• optional ingredients selected from the group consisting of non- aqueous solvents, pH buffering agents, perfumes, perfume carriers, fluorescers, colorants, hydrotopes, antifoaming agents, antiredeposition agents, enzymes, optical brighteners, opacifiers, antishrinking agents, drape imparting agents, antistatic agents and ironing aids.
• composition may also contain nonionic fabric softening agents such as lanolin and derivatives thereof.
• nonionic fabric softening agents such as lanolin and derivatives thereof.
• HEQ 1,2 bis [hardened tallowoyloxy] -3- trimethylammoniu propane chloride ex Hoechst.
• Liquid fabric softening agents were made up as follows:
• the cationic fabric softening agent and/or fatty acid and/or nonionic stabilising agent where appropriate were premixed and heated together to form a clear melt.
• the molten mixture thus formed was added over a period of at least one minute to water at 70°C to 80°C with constant stirring to form a dispersion.
• Viscosity was measured using the Haake RV20 Rotoviscometer. Viscosity is quoted at a shear rate of 10s "1 .
• the Casson data are obtained by using the Casson relationship:
• the Casson data were generated using the Haake RV20
• Rotoviscometer with a range of shear rates from O-lOOOs "1 .
• compositions were prepared in which an aqueous dispersion of 5% 6:1 HEQ: fatty acid, 0.5% of the following nonionics were added: Table 1
• compositions were prepared in which 0.5% of the following nonionic were placed in a composition containing an aqueous dispersion of 5% 6:1 dihardened tallow dimethyl ammonium chloride: fatty acid.
• Table 3 demonstrates that nonionic stabilising agents do not destroy the viscosity in formulations containing dihardened tallow dimethyl ammonium chloride.
• sucrose esters exhibit a significant softening benefit.
• Table 5 demonstrates the optimum level of mono-ester present to maximise the softening effect.

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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)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Compositions Of Macromolecular Compounds (AREA)

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• 1995
  • 1995-10-23 GB GBGB9521667.7A patent/GB9521667D0/en active Pending
• 1996
  • 1996-09-25 BR BR9611214A patent/BR9611214A/pt not_active IP Right Cessation
  • 1996-09-25 ES ES01123909T patent/ES2316412T3/es not_active Expired - Lifetime
  • 1996-09-25 EP EP96933428A patent/EP0877786B1/de not_active Expired - Lifetime
  • 1996-09-25 WO PCT/EP1996/004260 patent/WO1997015651A1/en active IP Right Grant
  • 1996-09-25 AU AU72166/96A patent/AU7216696A/en not_active Abandoned
  • 1996-09-25 CA CA002233229A patent/CA2233229C/en not_active Expired - Fee Related
  • 1996-09-25 ES ES96933428T patent/ES2185804T3/es not_active Expired - Lifetime
  • 1996-09-25 EP EP01123909A patent/EP1179582B1/de not_active Expired - Lifetime
  • 1996-09-25 DE DE69625243T patent/DE69625243T2/de not_active Expired - Lifetime
  • 1996-09-25 DE DE69637748T patent/DE69637748D1/de not_active Expired - Lifetime
  • 1996-10-08 ZA ZA9608475A patent/ZA968475B/xx unknown

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