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GB2199855A - Fabric conditioners - Google Patents
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GB2199855A - Fabric conditioners - Google Patents

Fabric conditioners Download PDF

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Publication number
GB2199855A
GB2199855A GB08800280A GB8800280A GB2199855A GB 2199855 A GB2199855 A GB 2199855A GB 08800280 A GB08800280 A GB 08800280A GB 8800280 A GB8800280 A GB 8800280A GB 2199855 A GB2199855 A GB 2199855A
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alkyl
formulation
formulation according
groups
water
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GB08800280A
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GB8800280D0 (en
GB2199855B (en
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Sandra Bostridge
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BP PLC
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BP PLC
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

An aqueous based fabric softening formulation comprises a water dispersible cationic softener, a non-ionic softener and an electrolyte. The non-ionic softener is a polybutene. The cationic softener may be a dihydrocarbyl-dialkyl ammonium salt or an alkyl imidazolinium salt. The combination of non-ionic and cationic softener now used enables the viscosity of the formulation to be lowered significantly. It also enables lower temperatures to be used to produce the formulation.

Description

FABRIC CONDITIONERS This invention relates to compositions suitable for use in fabric conditioning.
Fabric softener formulations are usually aqueous based, contain a water dispersible cat ionic softener, a non-ionic surfactant and an electrolyte which enables the viscosity of the formulation to be controlled.
It has now been found that good fabric softening formulations may be formed by using a specific non-ionic softener without adversely affecting the fabric being softened or the softening process.
Accordingly, the present invention is an aqueous based fabric softening formulation comprising a water dispersible cationic softener, a non-ionic softener and optionally an electrolyte, characterised in that the non-ionic softener comprises a polybutene.
In the polybutene,-Ne .non-olefinic chain portion may consist of n-butyl and/or isobutyl monomer units. The terminal unit may however have one of several structures falling under the generic formula (I):
wherein R1 is the long, branched alkyl chain in the polymer, and R2, R3 and R4 aren, or -CH3 groups such that at least one of them is H and at least one of them is -CH3.
Thus the polybutene used in the present invention may be a poly n-butene, polyisobutene or any combinations thereof. A mixed polymer of n- and isobutenes can be produced by polymerising a raffinate containing n-butenes and isobutenes.
The polybutenes used preferably have a number average molecular weight in the range of 250 - 5000, preferably from 300 - 2000. Such polybutenes have a viscosity at 40"C in the range of 15 150,000 centistokes.
Use of polybutenes has the advantage that it facilitates handling and enables the melting point of the mixture containing the quaternary ammonium salt to be reduced, e.g. to about 35"C thereby facilitating the blending of the softener in the final formulation.
The polybutene non-ionic softener is suitably used in conjunction with conventional water-dispersible cationic softeners such as the quaternary ammonium halides or the imidazolinium halides.
Thus, according to a further embodiment the present invention is an aqueous based fabric conditioning formulation comprising: (a) a water-dispersible cat ionic softener selected from (i) dihydrocarbyldialkylammonium salt of the formula:
wherein R5 and R6 are the same or different C12 to C24 alkyl or alkenyl groups, which may optionally carry additional functional groups selected from -OH, -O-, -CONH and -COO- either as substituents or as part of the main alkyl or alkenyl chain, R7 and R8 are the same or different C1-C4 alkyl groups, and X is an anion selected from a halide, methosulphate and ethosulphate and (ii) an alkylimidazolinium salt of the formula (III)::
wherein Rg is a C1-C4 alkyl or hydroxyalkyl group, R10 and R11 are the same or different alkyl or alkenyl groups containing from 8 to 25 carbon atoms, and R12 is hydrogen or a C1-C4 alkyl group and X- is an anion, selected from a halide methosulphate or ethosulphate and (b) a polybutene as defined above, and optionally (c) an electrolyte.
Examples of these cationic softeners of formula (II) above include ditallow dimethyl ammonium chloride; ditallow dimethyl ammonium methyl sulphate; dihexadecyl dimethyl ammonium chloride; dioctadecyl dimethyl ammonium chloride; dieicosyl dimethyl ammonium chloride; didocosyl dimethyl ammonium chloride; di(hydrogenated tallow) dimethyl ammonium methyl sulphate; dihexadecyl diethyl ammonium chloride; di(coconut alkyl) dimethyl ammonium chloride.
Ditallow dimethyl ammonium chloride, di(hydrogenated tallow alkyl) dimethyl ammonium chloride, di(coconut alkyl) dimethyl ammonium chloride and di(coconut alkyl) dimethyl ammonium methosulphate are preferred.
In a formulation containing both components (a) and (b) above if the component (a) is represented by formula (II) each of R5 and R6 suitably represent a substituent in which more than 50%, preferably more than 75Z of the groups are C16 or C18 alkyl or alkenyl groups. More preferably, each of the substituent groups R5 and R6 represent a mixture of alkyl and alkenyl groups, namely from 50-90% C18 alkyl or alkenyl groups and from 10 to 50Z C16 alkyl or alkenyl groups.
Thus, the substituents R5 and R6 are most preferably represented by ditallow groupings, and substituents R7 and R8 are preferably methyl groups and the anion is preferably a chloride.
Thus, the preferred component (a) of formula (II) is ditallowdimethyl ammonium chloride.
Examples of the imidazolinium salts of formula (III) above include l-methyl-l-(tallowylamido-) ethyl -2-tallowyl- 4,5-dihydro imidazolinium methosulphate and l-methyl-l-(palmitoylamido)ethyl -2-octadecyl-4,5- dihydro-imidazolinium chloride. Other useful imidazolinium materials are 2-heptadecyl-1-methyl-l- (2-stearylamido)-ethyl-imidazolinium chloride and 2-lauryl-lhydroxyethyl-1-oleyl-imidazolinium chloride. Such imidazolinium fabric softening components are described more fully in US Patent No. 4 127 489 and can be used in the formulations of the present invention.
The cationic quaternary salt components falling within (a) above are commercially available materials under the following trade names or Registered Trade Marks: Arquad 2HT (ex AKZO); Noramium M2SH (ex CECA); Aliquat-2HT and the imidazolinium compounds falling within (a) are Varisoft 475 and Rewoquat W7500.
The formulations of the present invention may optionally include specific electrolytes to assist in controlling the viscosity of the product. The amount of electrolyte in the formulation is suitably from 0.01% to 0.5%, most preferably from about 0.02% to about 0.2%, measured as the anhydrous salt. Examples of electrolytes that may be used include lithium chloride, calcium chloride, magnesium chloride, aluminium chloride and mixtures thereof.
When using a fabric conditioning formulation in which both the components (a) and (b) are normally present, the following weight percentages of each based on the total weight of (a) and (b) are suitably used: (a) 70 to 90% (b) 30 to 104: In component (a) each of R5 and R6 preferably represent more than 50% C16 or C18 alkyl or alkenyl group, more preferably, each of R5 and R6 represent a mixture of 50 to 90% C18 alkyl or alkenyl group and 10 to 50% C16 alkyl or alkenyl group.
Preferably (a) and (b) are present in the following weight percentages based on the total weight of (a) and (b).
(a) 75 to 85Z (b) 25 to 15% More preferably, (a) and (b) are present in the following weight percentages based on the total weight of (a) and (b) (a) about 80% (b) about 20% Compositions according to the present invention may be prepared by blending, e.g. by melting (a) and (b) at temperatures under 40C.
The compositions according to the present invention may be dispersed in water by mixing the components (a) and (b) in water with moderate shearing at elevated temperature, for example, in the range 30 to 400C.
The total amount of (a) and (b) in the water is preferably from 2 to 10% by weight.
Thus as another aspect of the present invention, a fabric conditioner comprises a total of 2 to 10% by weight of (a) and (b) in an aqueous dispersion.
Other components present in the fabric conditioner formulation may include a dye and a perfume.
EXAMPLES 1. Preparation of Ditallow dimethylammonium chloride Ditallowdimethylammonium chloride (each of R5 and R6 I more than 75% C18 or C16 alkyl or alkenyl group) can be prepared in various ways well known in the art and is a commercially available material, for example, Ciba Geigy Arquad 2HT (Regd TM).
2. Softening Test Test Solution Ditallowdimethylammonium chloride (available as a 75% mixture of the ammonium halide art 25% propan-2-ol) was heated at 35-400C and mixed under low shear conditions with a polybutene (Hyvis 10, Registered Trade Mark, Mn = 1000, viscosity at 400C 7800 centistokes).
A 5Z (by total weight) dispersion was formed in water heated to 35"C, with moderate shearing and contained 4Z by weight of ditallow dimethylammonium chloride, 1% by weight of the polybutene.
When cool, 4g of this 5X dispersion was further diluted with 996g of water to obtain a test solution which simulates a typical concentration of fabric conditioner existing in a washing machine rinse cycle.
Comparative Solution A comparative solution was prepared by diluting 4g of 5% by weight in water dispersion of the ditallowdimethylammonium chloride in 996g of water.
The test solution and the comparative solution were used to soften test cloths.
Sixteen terry towel cloths were washed twice in a commercial heavy duty detergent powder (not containing softener) to remove any coating applied during manufacture. Eight of the cloths were soaked in the test solution and eight of the cloths were soaked in the comparative solution at a cloth/liquor ratio of 150g/1.5 litres for 10 minutes with gentle agitation using a glass rod. They were subsequently removed, tumble dried and divided into eight in order that each of the softening panellists used the same sample.
Pair Comparison Tests The softening test procedure entitled pair comparison tests was carried out using panels of 8 persons.
Panel members were required to compare the softness of two cloths A and B (one being a test cloth, the other a comparison cloth) and rank them as follows: A is definitely softer than B Score +2 A is possibly softer than B Score +1 No difference Score 0 A is possibly harsher than B Score -1 A is definitely harsher than B Score -2 Scores for each cloth were totalled, averaged and the 95% confidence limit calculated.
On a scale of -2 to +2 the test solution scored +0.22 in a panel test compared with +0.22 for the comparative solution.
The viscosity of this new formulation at a shear rate of 1 sec-l was 95 milliPascal, compared with 550 milliPascal for the comparative solution.
The results show that the use of polybutene in the fabric conditioning formulation enables the viscosity of the formulation to be lowered significantly. It also enables lower blending temperatures to be used to produce the mixture of ingredients. The amount of ammonium salts used is also reduced.

Claims (11)

Claims:
1. An aqueous based fabric softening formulation comprising a water dispersible cationic softener, a non-ionic softener and optionally an electrolyte, characterised in that the non-ionic softener comprises a polybutene.
2. A formulation according to claim 1 wherein in the polybutene is poly-n-butene, polyisobutene or mixtures thereof having a number average molecular weight in the range of 250-5000 and a viscosity of 15-150,000 centistokes at 40"C.
3. A formulation according to claim 1 or 2 wherein the polybutene is used in conjunction with a water-dispersible cationic softener selected from the quaternary ammonium halides and the imidazolinium halides.
4. An aqueous based fabric conditioning formulation according to claim 3, said formulation comprising: (a) a water-dispers ible-cationic softener selected from (i) dihydrocarbyldialkylammonium salt of the formula:
wherein R5 and R6 are the same or different C12 to C24 alkyl or alkenyl groups, which may optionally carry additional functional groups selected from -OH, -0-, -CONH and -COO- either as substituents or as part of the main alkyl or alkenyl chain, R7 and R8 are the same or different C1-C4 alkyl groups, and X is an anion selected from a halide, methosulphate and ethosulphate and (ii) an alkylimidazolinium salt of the formula (III)::
wherein Rg is a C1-C4 alkyl or hydroxyalkyl group, R10 and R11 are the same or different alkyl or alkenyl groups containing from 8 to 25 carbon atoms, and R12 is hydrogen or a C1-C4 alkyl group and X is an anion, selected from a halide, methosulphate or ethosulphate and (b) a polybutene and optionally (c) an electrolyte.
5. A formulation according to claim 4 wherein in the component (a) represented by formula (II), each of R5 and R6 is a substituent in which more than 50% of the groups are C16 or C18 alkyl or alkenyl groups.
6. A formulation according to claim 4 wherein in the component (a) represented by formula (II), each of the substituent groups R5 and R6 represent a mixture of alkyl and alkenyl groups, whereby from 50-90% are C18 alkyl or alkenyl groups and from 10 to 50% are C16 alkyl or alkenyl groups:
7. A formulation according to claim 4 wherein in the component (a) represented by formula (II), the substituents R5 and R6 are di(hydrogenatedtallow) groupings, the substituents R7 and R8 are methyl groups, and the anion X is a chloride.
8. A formulation according to any one of the preceding claims 4-7 wherein the components (a) and (b) are present in the following percentages by weight based on the total weight of (a) and (b): (a) 70 - 90% (b) 30 - 10%
9. A process according to any one of the preceding claims 4-8 wherein the formulation is prepared by melting (a) and (b) at a temperature below 40"C.
10. A formulation according to any one of the preceding claims 4-8 wherein said formulation is dispersed in water by mixing components (a) and (b) in water with moderate shearing at elevated temperature.
11. A formulation according to claim 10 wherein the total amount of components (a) and (b) dispersed in water is from 2-10% w/w.
GB8800280A 1987-01-10 1988-01-07 Fabric conditioners Expired - Fee Related GB2199855B (en)

Applications Claiming Priority (1)

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GB878700538A GB8700538D0 (en) 1987-01-10 1987-01-10 Fabric conditioners

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GB2199855A true GB2199855A (en) 1988-07-20
GB2199855B GB2199855B (en) 1990-05-30

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GB8800280A Expired - Fee Related GB2199855B (en) 1987-01-10 1988-01-07 Fabric conditioners

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053883A1 (en) 2008-10-30 2010-05-06 Henkel Ag & Co. Kgaa new thickening system
US7807616B2 (en) 2004-11-11 2010-10-05 Henkel Ag & Co. Kgaa Geranonitrile substitute

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7807616B2 (en) 2004-11-11 2010-10-05 Henkel Ag & Co. Kgaa Geranonitrile substitute
DE102008053883A1 (en) 2008-10-30 2010-05-06 Henkel Ag & Co. Kgaa new thickening system

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Publication number Publication date
GB8800280D0 (en) 1988-02-10
GB2199855B (en) 1990-05-30
GB8700538D0 (en) 1987-02-11

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930107