ES2176614T5 - SOFTENING COMPOSITION OF FABRICS. - Google Patents

Abstract

THE USE OF A BENEFICIENT SKIN AGENT IS DESCRIBED, AS INGREDIENT OF A SOFTENING COMPOSITION FOR FABRICS, SO THAT THE SOFTENING COMPOSITION MAKES TEXTILE MATTERS TREATED WITH SUCH COMPOSITION, TRANSFER SUCH AGENT TO THE BENEFIT IN BENEFIT CONTACT SUCH MATTERS.

Description

Fabric softening composition.

This invention relates to the incorporation of an agent that confers benefits to the skin in a composition fabric softener so that when fabrics treated with the fabric softening composition come into contract subsequently with the skin, the fabrics provide a benefit to the skin.

The softening compositions are well known of fabrics that are added to the rinse. Typically, such compositions  contain a fabric softening agent of the amine salt type insoluble in water and / or quaternary ammonium, dispersed in water in a percentage of softening agent of up to 7% by weight, in which case the compositions are considered diluted, or in percentages of 7% a 50%, in which case the compositions are considered concentrated. The quaternary ammonium materials with long chain substituents they have been used in fabric softener compositions for many years. Often, they are used in conjunction with coactive agents, such as fatty acids or other relatively cheap materials, which also They provide softening benefits.

In addition to smoothing, the compositions Fabric softeners desirably have other benefits.

GB 1,601,359 (Procter and Gamble) describes the use of esters as an ingredient in a composition fabric softener that also comprises a cationic surfactant selected from various specific groups. The ester is one of a number of suggested non-ionic fabric lubricants.

GB 1,550,205 (Procter and Gamble) describes formulations containing silicones, compounds cationic and glycerol monostearate to facilitate ironing; and softening benefits can be obtained without ester oil when glycerol monostearate is replaced by others nonionic softeners.

Fabric softener compositions that They contain silicones are well known, and are described in the GB 1,549,180 (Procter and Gamble) and EP 0356210 (Dow Corning)

EP 0436729 (Kanebo) describes a industrial process to apply microcapsules to fabrics, which, when They get in contact with the skin, they are physiologically active.

US 4110498 (Benjamin et al.) describes a fabric softener composition comprising a cationic fabric softener and fabric softener based on lanolinic alcohol.

Accordingly, the present invention provides the use of an agent that confers benefits to the skin of according to claim 1.

It is preferred that the agents that confer benefits to the skin are perceived as conditioners of the skin.

In GB 1,549,180 (Procter and Gamble) examples of preferred silicones are given.

It is advantageous if silicone is essentially a poly [di (alkyl) (C 1 -C 5)) - siloxane] or poly [alkyl (C 1 -C 5) - aryl-siloxane]. Examples of such silicones include polydimethylsiloxanes.

It is preferred that the level of agent conferred benefits to the skin from 1 to 25% by weight of the composition total, more preferably 1 to 10% by weight.

The fabric conditioning composition for use with this invention it comprises a fabric softening material. Preferably, the fabric conditioning material is a material. Quaternary ammonium type softener. Advantageously, the fabric conditioning composition comprises a material Water insoluble cationic softener, which is a compound that it has two C 12-28 alkyl or alkenyl groups connected to the N atom by one or more ester bonds.

A preferred type of softener material of fabrics, of the ester bound quaternary ammonium type, for use in The compositions according to the invention can be represented by the formula:

       \ vskip1.000000 \ baselineskip
    

one

in which each R4 group is independently selected from alkyl groups C 1-4, hydroxyalkyl groups or alkenyl groups C 2-4; and in which each R5 group is independently selected from alkyl or alkenyl groups C 8-28; X - is any suitable anion; and n is 0 or an integer from 1 to 5.

Materials of this class and their method of Preparation are described in US 4137180 (Lever Brothers) The analysis of such materials shows that also they comprise small amounts of the corresponding salt of dimethylamine, one of such hydrochloride salts being N, N-dimethyl-2,3-bis [seboyloxy (hardened)] - propylamine. Advantageously, these materials comprise small amounts of the monoester corresponding, as described in US 4137180, by example, 1- (seboyloxy) chloride hardened) -2-hydroxy-3-trimethylammonium propane.

Another preferred cationic softener is represents by the formula:

2

       \ vskip1.000000 \ baselineskip
    

wherein each R 6 group is independently selected from C 1-4 alkyl, hydroxyalkyl or C 2-4 alkenyl groups; and wherein each R 7 group is independently selected from C 8-28 alkyl or alkenyl groups; T is 100 or 101 and n is 0 or an integer from 1 to 5, and X - is any suitable anion.

An additional advantage of using the materials of the quaternary ammonium type linked to ester with the above formula is that, included with the composition according to the invention, the compositions have excellent viscosities and are stable during the storage.

Preferably, the percentage of compounds of ester bound quaternary ammonium is at least 1% by weight of the composition, more preferably at least 3% by weight of the composition; the compositions are especially interesting concentrates comprising at least 7% of ammonium compound quaternary bound to ester. The level of ammonium compounds ester bound quaternary is preferably 1% to 80% by weight, more preferably from 4% to 32%, most preferably from 6% to 22%

It is preferable that the compound ratio fabric softener agent that confers benefits to the skin from 5: 1 to 1: 5, more preferably from 4: 1 to 2: 3.

The softening composition can also comprise a nonionic stabilizing agent, selected from:

i. linear C 8 to C 22 alcohols, alkoxylated with 10 to 20 moles of alkylene oxide; Y

ii. a C 10 to C 20 alcohol, or its mixtures

Advantageously, the stabilizing agent does not ionic is a linear C8 to C22 alcohol, alkoxylated with 10 to 20 moles of alkylene oxide. Preferably, the stabilizer does not ionic has an HLB value of 10 to 20, more preferably 12 to twenty.

Preferably, the level of stabilizer is not ionic is within the range of 0 to 10% by weight, plus preferably 0 to 5% by weight, most preferably 0 to 4% in weigh. When the non-ionic stabilizing agent is present, the mole ratio of quaternary ammonium compound to agent non-ionic stabilizer is within the range of 40: 1 to around 1: 1, preferably within the range of 18: 1 to around 3: 1.

Preferably, the compositions of the invention are liquids that comprise an aqueous base.

The composition may also contain a coactive, for example, an alkyl or alkenyl acid C 8 -C 24 monocarboxylic, or a polymer of the same. Preferably saturated fatty acid is used; in particular, tallow fatty acids (C 16 -C 19) hard. Preferably, the fatty acid is not saponified, for example oleic acid, lauric acid or tallow fatty acid free. They can also be used, as coactive, lanolin or others non-ionic fabric softening agents.

The percentage of coactive material is preferably more than 0.1% by weight, more preferably more than 0.2% in weigh.

Especially preferred are concentrates that comprise from 0.5 to 20% by weight of coactive, more preferably 1% at 10% by weight. The weight ratio of ammonium material quaternary / amine to coactive material is preferably 10: 1 to 1:10

The composition may also contain one or more optional ingredients, selected from non-aqueous solvents, pH buffering agents, perfumes, perfume carriers, fluorescent agents, dyes, hydrotropes, agents defoamers, dirt release agents, enzymes, optical brightening agents, opacifiers, agents anti-wrinkles, anti-stain agents, germicides, fungicides, antioxidants, anti-corrosion agents, and antistatic agents.

The invention will now be illustrated by means of following non-limiting examples. In the examples, all percentages are expressed by weight.

Examples

Conditioning formulations were prepared for rinsing according to table 1 melting the cationic compound in the silicone fluid with demineralized water at 70 ° C rapid agitation Stirring was continued for 10-15 minutes before subjecting the mixture to a high shear agitation using a Silverson homogenizer for 10-15 minutes.

TABLE 1

3

Silicone transfer

The formulations of the examples were used to treat terry towels at a dose of 2 ml / l, in containers Tergotometer® 1l (liquor: clothes = 40: 1, room temperature, 5 minutes, 65 rpm). The terry towels were centrifuged to remove excess liquor, and then dried on clothesline.

The pieces of treated curly towels are rubbed on the forearms of the evaluator during a minute. Three samples of strip of tape were taken from the surface of the skin, and were analyzed for silicon by XRF spectrometry (X-ray fluorescence). The levels of silicone were recorded in counts per second (CPS) from S-XRF spectrometry (X-ray fluorescence with synchrotron source) of the tape strips. Each figure represents the average of three values of independent tape strips.

Smoothing scores were obtained by comparison with previously prepared patterns; on this scale, the pattern 8 corresponds to untreated (rough) curly towel, and the Pattern 2 corresponds to very soft curly towel.

TABLE 2

4

All formulations gave excellent softness to curly towels. In addition, it was found that formulations of examples 1 and 2 transferred a level significant silicone on the skin.

Claims (4)

1. Use of a fabric softening composition comprising an agent that confers benefits to the skin, to deliver to the skin the agent that confers benefits to the skin and to impart sensory and / or cosmetic benefits to it when the fabrics treated with the Composition come into contact with the skin, characterized in that the agent that confers benefits to the skin is a silicone. 2. Use of a fabric softener composition according to claim 1, wherein the silicone is a poly [di (alkyl) (C 1 -C 5)) - siloxane] or poly [alkyl (C 1 -C 5) - aryl-siloxane] essentially linear 3. Use of a fabric softener composition according to any one of the preceding claims, wherein the level of agent that confers benefits to the skin is 1 to 25% by weight of the total composition. 4. Use of a fabric softener composition according to claim 1, wherein the composition further comprises a fabric softening quaternary ammonium material.