ES2140563T5 - TISSUE CONDITIONING COMPOSITION. - Google Patents

Abstract

A CONCENTRATED COMPOSITION OF FABRIC CONDITIONING CONTAINING MORE THAN 7% BY WEIGHT OF A CATIONIC SOFTENING AGENT AND A ZWITTERION COMPOUND OF FORMULA (I), IN WHICH R IS A RENTING GROUP C {SUB, 7} -C {SUB , 27} OR ALKYLENE; R {SUP, 1} AND R {SUP, 2} SELECTED INDEPENDENTLY FROM GROUPS RENT C {SUB, 1-14}; Z ES O O NH; A IS A WHOLE FROM 0 TO 1; B AND C ARE SELECTED INDEPENDENTLY FROM THE ENTIRE 1 TO 4; AND X {SUP, -} IS A COMPATIBLE ANION. THE COMPOSITION CAN TOLERATE HIGH LEVELS OF PERFUME AND RAPIDLY GOES TO A LIQUID STATE WHEN DEFROSTING IT.

Description

Fabric conditioning composition.

Field of the Invention

The present invention relates to a tissue conditioning composition. In particular the invention refers to aqueous dispersions of conditioning compositions of tissues comprising a quaternary ammonium compound insoluble in water and a hybrid compound suitable for compositions fabric softeners that are added during rinsing.

Background of the invention

Conditioning compositions of tissues that are added during rinsing. Typically said compositions contain a fabric softening agent of the type of water insoluble quaternary ammonium compound, dispersed in water at a softening agent level of up to about 7% by weight, in which case the compositions are considered diluted, or at levels from 7% by weight to 50% by weight, in which case the compositions are They know as concentrates.

In U.S. Patent 4,137,180 (Lever Brothers Company) cationic diesters of formula

one

wherein each of R 1, R 2 and R 3 it is an alkyl or hydroxyalkyl group containing from 1 to 4 atoms of carbons or a benzyl group, each of R 4 and R 5 is an alkyl chain containing 11 to 23 carbon atoms and X <-> is an anion soluble in Water.

One of the problems associated with many tissue conditioning compositions, including those they contain cationic diesters such as those described in the patent of the United States 4,137,180, is the physical instability of these compounds. The problem is exacerbated at high and low temperatures and by perfume addition When a tissue conditioner is in concentrated form, the stability problem is more exacerbated and, for this reason, conditioners are rarely marketed with high levels of perfume Even when the perfume is encapsulated in a solid matrix, there may be stability problems due to leakage of the capsules.

An additional problem that arises in more climates cold is that when a conditioner is transported or stored tissues in a cold place, the product gels forming a solid. In some cases the product does not recover and in others the time needed to turn it into a liquid product is a couple of days. This poses problems to supermarkets that cannot place the solidified product directly on the shelves of the Supermarket.

EP 280 550 and EP 507 478 (Unilever) describe the use of selected non-ionic stabilizing agents to solve the poor stability. However, the instability of the formulation when perfume is added.

US Patent 3,984,335 (Ciko et al. ) Describes compositions containing, as a softening agent, a quaternized fatty amine and a hybrid fatty acid compound.

In EP 0 332 270 (Unilever), describe hybrid softening agents, such as amine oxides, combined with cationic softening agents and an amine.

EP 0 326 213 describes a composition for tissue treatment, comprising one or more materials water soluble amphoteric tissue conditioners, preferably an amine oxide and a coactive material, the weight ratio of amphoteric material to coactive material of 5: 1 a 50: 1 The coactive material may be a cationic surfactant, not ionic or semipolar.

With the present invention the problem is mitigated of forming a concentrated tissue conditioner, with levels relatively low perfume.

In addition, the present invention helps in the recovery of a one-state liquid tissue conditioner solidified to a homogeneous liquid.

Description of the invention

The present invention claims a dispersion aqueous of a fabric conditioning composition comprising more than 7% by weight of a non-soluble fabric softening agent in water of the quaternary ammonium biodegradable compound type with at least one ester bond, and between 0.5% by weight and 3.0% by weight of a perfume, characterized in that the composition also includes 0.1 to 8% by weight of a hybrid compound of the formula:

\melm{\delm{\para}{R ^{2} }}{N}{\uelm{\para}{R ^{1} }}

^{+}--- (CH_{2})_{c}---X^{-}R (COZ) a (CH 2) b ---

 \ melm {\ delm {\ para} {R 2}} {N} {\ uelm {\ para} {R 1}}} 

<+> --- (CH2) c --- X <->

wherein R is an alkyl or alkenyl group C 7 -C 27, R 1 and R 2 are selected independently of alkyl groups C_ {1} -C_ {4}, to an integer from 0 to 1, b and c are independently selected from integers from 1 to 4, Z is oxygen or nitrogen and X - is an anion compatible.

At low pH, the anion may be protonated.

The invention also describes the use of a alkylamidopopyldimethylaminoacetic acid betaine from formula:

\melm{\delm{\para}{CH _{3} }}{N}{\uelm{\para}{CH _{3} }}

^{+} (CH_{2})_{3} COO Na^{+}R CONH (CH 2) 3

 \ melm {\ delm {\ para} {CH 3}} {N} {\ uelm {\ para} {CH 3}} 

<+> (CH2) <3> COO Na <+>

in which R is an alkyl chain C 11 -C 17 or mixtures thereof, for stabilize an aqueous dispersion of a tissue conditioner scented or to form an aqueous dispersion of conditioner concentrated tissues, and between 0.5% by weight and 3.0% by weight of a perfume, which comprises more than 7% by weight of a softening agent of tissues that is not water soluble of the type of compound biodegradable quaternary ammonium with at least one bond ester.

The cationic active compound used in the The present invention comprises a fabric softening agent water insoluble cationic comprising a biodegradable material of quaternary ammonium with at least one in lace ester. The Preferred materials are cationic fabric softening agents Water insoluble comprising a compound that has two groups C 12 -C 28 alkyl or alkenyl connected to a quaternary nitrogen through an ester bond.

Of particular interest in the present invention They are softening compounds that have the formula:

two

wherein R1 is an alkyl group C 1 -C 4, R 2 and R 3 are groups C 12 -C 22 alkyl or alkenyl the same or different, T are equal groups or different

\delm{C}{\delm{\dpara}{O}}

---O

\hskip0,5cm

u

\hskip0,5cm

---O---

\delm{C}{\delm{\dpara}{O}}

---

\hskip0,5cm

u

\hskip0,5cm

---O---

\delm{C}{\delm{\dpara}{O}}

---O------

 \ delm {C} {\ delm {\ dpara} {O}} 

---OR

 \ hskip0,5cm 

or

 \ hskip0,5cm 

---OR---

 \ delm {C} {\ delm {\ dpara} {O}} 

---

 \ hskip0,5cm 

or

 \ hskip0,5cm 

---OR---

 \ delm {C} {\ delm {\ dpara} {O}} 

---OR---

       \ newpage
    

and X <-> is a soluble anion in Water.

It is especially preferred that the material of quaternary ammonium is of formula:

3

in which each of R_ {1}, R2 and R_ {3} it is an alkyl or hydroxyalkyl group containing from 1 to 4 atoms of carbon or an alkenyl group with 2 to 4 carbon atoms or a benzyl group, each of R 4 and R 5 is a chain alkyl containing from 8 to 28 carbon atoms and X - is a soluble anion in Water.

It is further preferred that the active compound water-insoluble cationic be chloride N, N-di (sebum-hardened) -N, N-trimethylammoniumpropane.

In U.S. Patent 4,137,180 (Lever Brothers) described preferred materials and methods for its preparation. Preferably, these materials comprise small amounts of the corresponding monoester described in the U.S. Patent 4,137,180, for example, chloride 1-tallow-2-hydroxytrimethylammoniumpropane.

The level of the ammonium compound with ester bond it is above 7% by weight of the composition; plus preferably above 15% by weight of the composition; a lot more preferably between 15% and 40% by weight of the composition.

It is advantageous that the hybrid material used in the present invention be an acid betalin alkylamidopropyldimethylaminoacetic acid of the formula:

in which R is an alkyl chain C11-C17 or mixtures of the same.

\melm{\delm{\para}{CH _{3} }}{N}{\uelm{\para}{CH _{3} }}

_{+} (CH_{2})_{3} COO^{-} Na^{-}R CONH (CH 2) 3

 \ melm {\ delm {\ para} {CH 3}} {N} {\ uelm {\ para} {CH 3}} 

+ (CH 2) 3 COO - Na -

The level of hydrous material is preferably from 0.1% by weight to 8% by weight of the composition, more preferably from 0.4% by weight to 5% by weight of the total composition.

The fabric conditioning composition is it can form on any base, but it is especially preferred that The base is watery.

The composition may also contain material long chain fatty acid, for example, alkyl acids or C 8 -C 24 monocarboxylic alkenyl or polymers thereof. Preferably fatty acids are used saturated, in particular hardened tallow fatty acids C_ {16} -C_ {18}. Preferably, the fatty acid it is not 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 greater than 0.1%, more preferably greater than 0.2% in weigh. Especially preferred are compositions diluted in the that the fatty acid material is present in an amount of 0.25% by weight to 20% by weight. The weight ratio of ammonium compound Quaternary to fatty acid material is preferably 1:10 to 10: 1

The composition may also contain one or more optional ingredients selected from the group consisting of non-aqueous solvents, pH buffering agents, vehicles perfumes, inorganic salts, fluorescent, dyes, hydrotropes, antifoaming agents, antiredeposition agents, enzymes, optical brighteners, opacifiers, anti-wrinkle agents, agents that impart fall, antistatic agents, adjuvants of the ironing and concentrating agents such as monostearate glycerol.

It is also preferable that in the composition they are ethoxylated fatty alcohols present. It is especially advantageous that are present in an amount of 0.5% by weight to 2% by weight of The total composition.

The perfume can be encapsulated or free. The Perfume level in the product is between 0.5% by weight and 3.0% in weight.

The composition may also contain agents. fabric softeners, such as lanolin and derivatives of the same

It is desirable that the viscosity of these tissue conditioning compositions are in the range of 15 mPa.s at 120 mPa.s at a shear rate of 110 s -1.

The compositions of the invention have preferably a pH greater than 2, more preferably between 2 and 5.

The invention will be illustrated below by The following examples.

Examples

In the examples, all percentages are Express in weight.

Comparative examples are represented by a letter while the examples of the invention are represented by a number.

Preparation of the fabric conditioning composition

Liquid softening agents are prepared from fabrics as follows:

The fabric softening agent is premixed cationic and non-ionic stabilizing agent and are heated to form a clear molten mixture. The melted mixture as well formed is added in a period of at least one minute to water at room temperature, constantly stirring, to form a dispersion. Perfume is added to the aqueous mixture. The addition of Hybrid material is made:

a) to melt or

b) to the aqueous mixture before or just with the perfume addition

Examples 1, 2, 3, A, B, C, D, E and F

TABLE 1

4

(*) HT TMAPC is chloride of 1,2-di (sebum-oxidized) trimethylammoniumpropane, from Hoescht (**) Betaine Tego L-alkylamidopropyl dimethylaminoacetic acid betaine Shell (***) Water: up to 100% in weight

The examples were prepared according to the methods a) or b) mentioned above.

Examples A, B, E and F flocculated in 12 hours at room temperature. Examples 1, 2, and 3 remained stable for several months at room temperature.

The storage results of the examples C and D were the following:

Example Time needed to occur flocculation 37 ° C 45 ° C 20ºC C 4 weeks 1 day 3 months D 4 weeks one day 3 months

Examples 4 and G

TABLE 3

Composition % in weight Example 4 Example G HT TMPAC 24 24 Betaine Tego 0.6 - Fragrance 0.8 0.4 Alcohol from 1.0 1.0 Tallow 0.2 0.2 Chloride warm up to 100% until 100% Water

Both example 4 and example G flocculated When adding perfume. However, example 4 needed, to flocculate, double quantity of perfume than example G.

Example H TABLE 4

Composition % in weigh Example H Chloride say (sebum hardened) 10.8 dimethylammonium 2.7 Acid tallow fatty hard 9.0 Ethylene glycol 1.0 Alcohol tallow ethoxylate (EO 35) - Betaine Tego Water up to 100

Examples 1, 2, 4, A to D, G and H solidified.

Examples 1, 2 and example 4 were recovered of solidification in 1 to 2 hours.

Examples A to D and the example were retrieved from Solidification in 2 to 4 days.

Example H recovered from solidification in 4 hours.

It shows that the presence of a material hybrid helps solidification recovery. The solidification recovery is further intensified with materials that contain an ester link.

Example I TABLE 5

Composition % in weigh HT TMPAC 24 Rust lauryl dimethylamine one Fragrance 0.5 Alcohol tallow ethoxylate (EO 35) 1.0 Chloride warm 0.2 Water until 100

Example I was prepared according to the method a or b. Flocculation occurred in 1 week at room temperature with Independence of the preparation method used. It shows that Not all amphoteric compounds are suitable for use in this invention.

Claims (9)

1. An aqueous dispersion of a fabric conditioning composition comprising more than 7% by weight of a non-water soluble fabric softening agent, which is a biodegradable quaternary ammonium compound with at least one ester bond, and between 0, 5% by weight and 3.0% by weight of a perfume, characterized in that the composition further comprises 0.1 to 8% by weight of a hybrid compound of the formula: R (COZ) a (CH 2) b ---

 \ melm {\ delm {\ para} {R 2}} {N} {\ uelm {\ para} {R 1}}} 

<+> --- (CH2) c --- X <-> wherein R is an alkyl or alkenyl group C 7 -C 27, R 1 and R 2 are selected independently of alkyl groups C_ {1} -C_ {4}, a is an integer from 0 to 1, b and c are independently selected from integers from 1 to 4, Z is oxygen or nitrogen and X - is an anion compatible. 2. A fabric conditioning composition of according to claim 1, wherein the softening agent of tissues of the quaternary ammonium biodegradable compound type comprises a compound that has two alkyl or alkenyl groups C_ {12} -C_ {28} connected to a nitrogen quaternary by means of an ester link. 3. A fabric conditioning composition of according to claim 2, wherein the softening agent of tissues of the quaternary ammonium biodegradable compound type It is of formula: 5 in which each of R_ {1}, R2 and R_ {3} it is an alkyl or hydroxyalkyl group containing from 1 to 4 atoms of carbon or an alkenyl group with 2 to 4 carbon atoms or a benzyl group, each of R4 and R5 is a chain alkyl containing from 8 to 28 carbon atoms and X - is a anion soluble. 4. A fabric conditioning composition of according to any preceding claim, wherein the hybrid material is an acid betaine alkylamidopropyldimethylaminoacetic acid of the formula: R CONH (CH 2) 3

 \ melm {\ delm {\ para} {CH 3}} {N} {\ uelm {\ para} {CH 3}} 

<+> (CH2) <3> COO <-> Na <-> in which R is an alkyl chain C 11 -C 17 or mixtures of the same. 5. A fabric conditioning composition of according to any preceding claim, wherein the level of hybrid material is 0.4% by weight to 5% by weight. 6. A fabric conditioning composition of according to any preceding claim, which comprises a aqueous base 7. A composition according to any preceding claim further comprising a fatty acid. 8. Use of an acid betaine amidopropyl dimethylaminoacetic formula: R CONH (CH 2) 3

 \ melm {\ delm {\ para} {CH 3}} {N} {\ uelm {\ para} {CH 3}} 

<+> (CH2) <3> COO <-> Na <-> in which R is an alkyl chain C 11 -C 17 or mixtures thereof, for stabilize an aqueous dispersion of a tissue conditioner scented comprising more than 7% by weight of an agent fabric softener that is not soluble in water of the type of biodegradable quaternary ammonium compound with at least one ester bond, and between 0.5% by weight and 3.0% by weight of a fragrance. 9. Use of an acid betaine alkylamidopropylmethylaminoacetic formula: R CONH (CH 2) 3

 \ melm {\ delm {\ para} {CH 3}} {N} {\ uelm {\ para} {CH 3}} 

<+> (CH2) <3> COO <-> Na <-> in which R is an alkyl chain C 11 -C 17 or mixtures thereof, for form an aqueous dispersion of a tissue conditioner concentrate comprising more than 7% by weight of an agent fabric softener that is not soluble in water of the type of biodegradable quaternary ammonium compound with at least one ester bond, and between 0.5% by weight and 3.0% by weight of a fragrance.