GB2206902A - Softening-detergent compositions - Google Patents

Softening-detergent compositions Download PDF

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Publication number
GB2206902A
GB2206902A GB8811241A GB8811241A GB2206902A GB 2206902 A GB2206902 A GB 2206902A GB 8811241 A GB8811241 A GB 8811241A GB 8811241 A GB8811241 A GB 8811241A GB 2206902 A GB2206902 A GB 2206902A
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Prior art keywords
lt
sep
tb
detergent
siloxane
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GB8811241A
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GB2206902B (en )
GB8811241D0 (en )
Inventor
Ian Charles Callaghan
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BP PLC
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BP PLC
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    • CCHEMISTRY; METALLURGY
    • C11ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3703Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • C11D3/3738Alkoxylated silicones

Abstract

Built laundry detergents having fabric softening properties contain a defined polyether siloxane containing dimethyl siloxane groups, polyether siloxane groups and methyl alkyl siloxane groups.

Description

DETERGENT COMPOSITIONS This invention relates to built laundry detergent compositions having fabric softening activity, commonly known as softergents.

Detergent compositions having fabric softening activity are known in the art. For example, US 3 862 058 discloses a granular built laundry detergent composition comprising 1 to 50 per cent by weight of a smectite-type clay fabric softening agent having an ion exchange capacity of at least 50 mg/100 g.

US 4 585 563 discloses a particulate built detergent composition with fabric softening activity incorporating 0.05-5 wtZ of an organo-functional poly alkyl siloxane textile treatment agent of defined formula. The siloxane contains a nitrogen atom bonded to silicon through an alkylene group.

This siloxane textile treatment agent may have poly(alkylene oxide) chains attached to the silicon atoms. The presence of the poly(alkylene oxide) chains is said to enhance the hydrophilic and antistatic component of the siloxane.

US 4 585 563 mentions that polydimethyl siloxanes have been used as suds regulants in detergents but that these can adversely affect textile cleaning.

It has now been found that improved softening and overall detergency is achieved when certain polyether-alkyl-polymethylsiloxane copolymers are incorporated into built laundry detergent composition.

Thus, according to the present invention, a built laundry detergent composition having fabric softening activity containing a polyether siloxane fabric softening agent wherein the polyether siloxane is <img class="EMIRef" id="026810205-00020001" />

where Q is -(CH2)3-O-(C2H40)x(C3H60)yR, and R is an alkyl residue with 1 to 4 carbon atoms or hydrogen, Me is methyl, and n is an integer in the range 10-200, m is an integer in the range 1 to 25, q is an integer in the range 1 to 100, p is an integer in the range 7 to 17, and q is greater or equal to m and n is greater than 30, and x and y have values such that the weight ratio of ethoxy to propoxy units is in the range 100:0 to 20:80.

Built detergent compositions suitable for washing fabrics are well known. They contain a surface active agent responsible for the primary cleaning function. Another essential feature is a detergent builder.

Many surface active agents are well known for use in laundry detergents. Examples of types of surface active agents which can be used are anionic surfactants e.g. long chain alkyl sulphonates, and long chain alkyl benzene sulphonates such as sodium dodecylbenzene sulphonate.

The alkyl chains are preferably linear to provide biodegradability.

Nonionic surfactants may be used such as the condensation products of alkylene oxides e.g. ethylene oxide with long chain alkanols or with alkyl phenols, e.g. the condensation product of nonyl phenol with 9 moles of ethylene oxide.

Cationic surface active compounds may also be present e.g.

cetyl trimethyl ammonium bromide or chloride.

The detergent may be in liquid form, but is preferably in solid granular form.

The quantity of surface active agent is preferably in the range 5% to 60Z, more preferably 10X to 30Z based on total weight of the detergent composition ie the product as sold to the consumer. In the case of liquid detergents the maximum quantity of solid ingredients which can be incorporated will be determined by the ability of the liquid to dissolve or suspend the solid.

A wide variety of detergent builders is known for use in granular detergent compositions. Examples of suitable builders are sodium tripolyphosphate, trisodium orthophosphate, tetrasodium pyrophosphate, tetrapotassium pyrophosphate, nitrilotriacetamide, carboxy methyl oxysuccinic acid, polyacrylates, polymaleates, copolymers of acrylic acid, and zeolites.

The quantity of detergent builder is preferably in the range 0.5X to 60Z, more preferably 10% to 40X, based on weight of detergent composition.

The molecular weight of the polyether siloxane is preferably in the range 250 to 2000.

The weight ratio of ethoxy to propoxy groups is preferably in the range 5:1 to 2:1.

The polyether siloxanes used in the present invention may be single compounds, or may be mixtures of compounds. In general mixtures of the defined polyether siloxanes will be used. The polyether siloxanes required by the present invention are commercially available materials. An example of a suitable polyether siloxane is the material sold under the trade name Tegopren 7006 ("Tegopren" is a trade mark).

It is well known to incorporate fabric softening agents in detergents and the quantity of polyether siloxane added to the detergent is selected so as to give the desired degree of softening of the fabric to be washed. It can readily be determined by simple tests. Examples of suitable quantities of the polyether siloxane of the invention are those in the range 0.1 to 10%, preferably 0.3 to 5Z, more preferably 1 to 4Z, by weight of the total detergent composition.

The invention will now be illustrated by reference to the following Examples and to the drawings in which Figures i and 2 are a diagrammatic representation of the results of fabric softness evaluations.

Example 1 A granular detergent containing a polyether siloxane fabric softening agent was prepared by adding the polyether siloxane dropwise to a granular detergent which did not contain a fabric softening agent. The composition of the detergent was Detergent Base Powder Compositions <img class="EMIRef" id="026810205-00040001" />

<tb> <SEP> 1 <SEP> dodecyl <SEP> benzene <SEP> sulphonate <tb> <SEP> 2 <SEP> a <SEP> sodium <SEP> soap <tb> <SEP> 3 <SEP> nonionic <SEP> surfactant <SEP> - <SEP> oxyethylated <SEP> hydroxy <SEP> compound <tb> 4 <SEP> sodium <SEP> tripolyphosphate <tb> 5 <SEP> zeolite <tb> 6 <SEP> nitrolotriacetic <SEP> acid <SEP> sodium <SEP> salt <tb> <SEP> 7 <SEP> ethylene <SEP> diamine <SEP> tetra <SEP> methyl <SEP> phosphonic <SEP> acid <SEP> - <SEP> sodium <SEP> salt <tb> 8 <SEP> modified <SEP> polyacrylate <SEP> - <SEP> sodium <SEP> salt <SEP> (Sokalan <SEP> CP5) <tb> 9 <SEP> sodium <SEP> perborate <SEP> 4H20 <tb> 10 <SEP> carboxy <SEP> methyl <SEP> cellulose <tb> 11 <SEP> " <SEP> " <SEP> hydroxy <SEP> ethyl <SEP> cellulose <tb> 12 <SEP> aluminium <SEP> silicate <tb> 13 <SEP> sodium <SEP> sulphate <tb> 14 <SEP> enzyme <SEP> (protease) <tb> 15 <SEP> optical <SEP> brightener <tb> <img class="EMIRef" id="026810205-00050001" />

<tb> Component <SEP> 0 <SEP> Activity <SEP> Z <SEP> Amount <SEP> (gms) <SEP> <tb> <SEP> 1 <SEP> 76 <SEP> 1.0 <tb> <SEP> 2 <SEP> 96.8 <SEP> 3.0 <tb> <SEP> 3 <SEP> 100 <SEP> 1.5 <tb> <SEP> 4 <SEP> 97 <SEP> 9.5 <tb> <SEP> 5 <SEP> 100 <SEP> 5.0 <tb> <SEP> 6 <SEP> 98 <SEP> 1.0 <tb> <SEP> 7 <SEP> 33 <SEP> 0.3 <tb> <SEP> 8 <SEP> 92 <SEP> 0.5 <tb> <SEP> 9 <SEP> 100 <SEP> 10.0 <tb> <SEP> 10 <SEP> 60 <SEP> 0.5 <tb> <SEP> 11 <SEP> 58 <SEP> 0.5 <tb> <SEP> 12 <SEP> 100 <SEP> 3.5 <tb> <SEP> 13 <SEP> 100 <SEP> 8.5 <tb> <SEP> 14 <SEP> 100 <SEP> 0.1 <tb> <SEP> 15 <SEP> 100 <SEP> 0.15 <tb> <SEP> 45.55 <SEP> grams <SEP> total <tb> The polyether siloxane had the formula (I) above and was a commercially available material sold under the trade name "Tegopren 7006". The weight ratio of ethylene oxide to propylene oxide units in the polyether was 3.2, the viscosity at 250C was 1400 1 300 mm2s'1, the specific gravity at 20"C was 0.930 + 0.01 gcm 3 and the refractive index at 200C was 1.440.

The quantity of polyether siloxane added to the granular detergent was 3% by weight of the granular detergent.

The resulting detergent containing a fabric softener (hereinafter referred to as a softergent) was tested as follows.

The softergent (150g) was used to wash a representative load 5 kg of washing in a conventional front opening washing machine.

The load included 1 nappy (diaper) and two tea towels. The two tea towels were both stapled with small pieces of cloth carrying representative stains typical of those which would be expected in a washing load e.g. blood, milk, ink, red wine, carbon black, olive oil, clay, lanolin, salt.

The load was washed at 60"C using the ordinary "whites" programme of the washing machine i.e. a main wash (no prewash), 3 rinses, and a spin.

The fabrics were then tumble dried. The softness of the nappy was evaluated by a test panel.

For each panel softening test (PST) four nappies were subjected to different treatments, this included one washed in the standard softergent i.e. "Bold 3" (Trade Mark). Each nappy was labelled A, B, C or D and each cut into eight pieces. This enabled each of the eight panellists to be given one cloth labelled A, B, C and D.

The panel members were asked to compare the softness of cloth A and B, for example and rank the cloths as follows: A definitely softer than B score +2 A is possibly " " n +1 No difference " 0 A is possibly harsher n tt tt -1 A is definitely " " " n -2 The scores for each cloth were totalled, averaged and the 95Z confidence limit calculated. In this way each cloth received a score and an "error bar". If treatment "A" needs to be compared with treatment "B", for example, then if their respective "error bars" overlap there is no difference in performance, and if the "error bars" do not overlap, there is a significant difference in performance.

The results are shown in Figure 1 under D.

The swatches of cloth with representative stains were evaluated for cleanness as follows: The stain samples were removed from the teatowels and ironed flat. Light reflectance measurements were made using a standard light reflectance meter. This enabled the percentage amount of stain removed from each piece of cloth to be calculated an overall percentage detergency to be calculated.

The results are shown in the Table and Figure 1 under C.

Comparative Test A A commercially available softergent sold under the trade name "Bold 3" was tested under the same conditions as Example 1.

"Bold 3" is said by its manufacturers to be made according to US 3862058. It is therefore based on a combination of smectite clay and quaternary ammonium compound. The results of the softening test are shown in Table 1, Figures 1 and 2 under A, and the results of the detergency test are shown in the Table.

Examples 2 to 6 Experiments were carried out as in Example 1 but with differing amounts of polyether siloxane. The quantities of siloxane used are shown in the Table. The softness evaluations for Examples 2 and 3 are given in Figure 1 under C and B. The softness evaluations for Examples 4, 5 and 6 are given in Figure 2 under D, C and B respectively.

Table Detergency Composition Overall Deternency Experiment (% removal) A. Comparison 57.4 1. Base + 3% polyether-alkyl-polymethyl siloxane copolymer 62.4 2. Base + 2% " " " 62.8 3. Base + 1% n " 63.0 4. Base + 0.75% n 1l " 62.3 5. Base + 0.5Z " ' " 65.6 6. Base + 0.25% tB n n 62.3

Claims (6)

Claims:
1. A built laundry detergent composition having fabric softening activity containing a polyether siloxane fabric softening agent wherein the polyether siloxane is <img class="EMIRef" id="026810206-00080001" />
where Q is -(CH2)3-0-(C2H40)x(C3H60)yR} Me is methyl, and n is an integer in the range 10-200, m is an integer in the range 1 to 25, q is an integer in the range 1 to 100, p is an integer in the range 7 to 17, and q is greater or equal to m and n is greater than 30, and x and y have values such that the weight ratio of ethoxy to propoxy units is in the range 100:0 to 20:80.
2. A built laundry detergent according to claim 1 wherein the polyether siloxane has a molecular weight in the range 250 to 2000.
3. A built laundry detergent according to either of claims 1 or 2 wherein the weight ratio of ethoxy to propoxy units is in the range 5:1 to 2:1.
4. The built laundry detergent according to any one of the preceding claims wherein the quantity of the polyether siloxane present is in the range 0.1 to 10 wt Z based on the weight of total detergent composition.
5. The detergent of claim 4 wherein the quantity of the polyether siloxane present is in the range 0.3 to 5 wt Z.
6. The detergent of claim 5 wherein the quantity of the polyether siloxane is in the range 1 to 4 wt Z.
GB8811241A 1987-07-10 1988-05-12 Detergent compositions Expired - Fee Related GB2206902B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8716268A GB8716268D0 (en) 1987-07-10 1987-07-10 Detergent compositions
GB8719721A GB8719721D0 (en) 1987-08-20 1987-08-20 Detergent compositions
GB8723435A GB8723435D0 (en) 1987-10-06 1987-10-06 Detergent composition

Publications (3)

Publication Number Publication Date
GB8811241D0 GB8811241D0 (en) 1988-06-15
GB2206902A true true GB2206902A (en) 1989-01-18
GB2206902B GB2206902B (en) 1991-07-03

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GB8811241A Expired - Fee Related GB2206902B (en) 1987-07-10 1988-05-12 Detergent compositions

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363080A1 (en) * 1988-09-30 1990-04-11 Dow Corning Corporation Softening composition
EP0463496A1 (en) * 1990-06-28 1992-01-02 Kao Corporation Detergent composition
FR2713237A1 (en) * 1993-12-03 1995-06-09 Rhone Poulenc Chimie Detergent compsn. contg. tenside, builder
US5723426A (en) * 1996-02-29 1998-03-03 Zhen; Yueqian Liquid laundry detergent compositions containing surfactants and silicone emulsions
US5759208A (en) * 1996-02-29 1998-06-02 The Procter & Gamble Company Laundry detergent compositions containing silicone emulsions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363080A1 (en) * 1988-09-30 1990-04-11 Dow Corning Corporation Softening composition
EP0463496A1 (en) * 1990-06-28 1992-01-02 Kao Corporation Detergent composition
US5441667A (en) * 1990-06-28 1995-08-15 Kao Corporation Detergent composition
FR2713237A1 (en) * 1993-12-03 1995-06-09 Rhone Poulenc Chimie Detergent compsn. contg. tenside, builder
US5723426A (en) * 1996-02-29 1998-03-03 Zhen; Yueqian Liquid laundry detergent compositions containing surfactants and silicone emulsions
US5759208A (en) * 1996-02-29 1998-06-02 The Procter & Gamble Company Laundry detergent compositions containing silicone emulsions

Also Published As

Publication number Publication date Type
GB2206902B (en) 1991-07-03 grant
GB8811241D0 (en) 1988-06-15 grant

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940512