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.
• 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.
• an aqueous fabric softening composition comprising:
• liquid fabric softening composition comprising the steps of selecting the following ingredients:
• 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.
• the nonionic stabilising agent is a sucrose ester, such as sucrose, distearate and sucrose monostearate.
• 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 level of nonionic stabilising agent present is 0.1 to 2.5 % by weight.
• 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: Trade Name wt % monoester Crodesta F10 3 Crodesta F20 10 Crodesta F50 29 Crodesta F70 56 Crodesta F110 52 Crodesta F140 57 Crodesta F160 75
• the fabric softening compound is a substantially water insoluble quaternary ammonium material comprising at least one ester link and two C 12 -C 28 alkyl or alkenyl groups.
• 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 18 .
• 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 L ⁇ - 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 -3 wt% in demineralised water at 20°C.
• the fabric softening compounds Preferably have a solubility less than 1 x 10 -4 .
• 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 12-18 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: wherein each R1 group is independently selected from C 1-4 alkyl, hydroxyalkyl or C 2-4 alkenyl groups; and wherein each R 2 group is independently selected from C 8-28 alkyl or alkenyl groups; X - is any suitable anion.
• T is or 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: wherein R 1 ,X - ,n and R 2 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 24 alkyl or alkenyl monocarboxylic acids or polymers thereof.
• long chain fatty acid material for example C 8 - C 24 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 nonaqueous 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 nonaqueous 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.
• HEQ 1,2 bis[hardened tallowoyloxy]-3-trimethylammonium propane chloride ex Hoechst.
• Liquid fabric softening agents were made up as follows:
• Viscosity was measured using the Haake RV20 Rotoviscometer. Viscosity is quoted at a shear rate of 10s -1 .
• the Casson data were generated using the Haake RV20 Rotoviscometer with a range of shear rates from 0-1000s -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 Example Nonionic A No nonionic B Genapol T-150 C Tween 80 D Tween 85 1 Crodesta F50 2 Crodesta F110
• Genapol, Tween and Crodesta are trademarks.
• nonionics stabilising agents which are not as specified by this invention, such as Genapol T-150, Tween 80 and
• Tween 85 do not allow vesicle formation and hence the viscosity of the composition is unacceptably low.
• the examples according to the invention allow vesicle formation and so have an acceptably high viscosity.
• 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.
• Example E No nonionic
• Example F Genapol T-150
• Example G Crodesta F50
• Table 3 demonstrates that nonionic stabilising agents do not destroy the viscosity in formulations containing dihardened tallow dimethyl ammonium chloride.
• Example 3 0.25 % Crodesta F160
• Example 4 0.50 % Crodesta F160
• Example 5 0.50 % Crodesta F10
• Example 6 0.50 % Crodesta F20
• Example 7 0.50 % Crodesta F50
• Example 8 0.50% Crodesta F70
• Example 9 0.50% Crodesta F110
• Example 10 0.50 % Crodesta F160
• sucrose esters exhibit a significant softening benefit.
• Table 5 demonstrates the optimum level of mono-ester present to maximise the softening effect.
• Table 5 Example Softening Score Votes 5 0.0000 17 6 0.1689 25 7 0.2136 27 8 0.9444 54 9 1.3931 71 10 0.7005 46

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

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