FR2526441A1 - FABRIC SOFTENING COMPOSITION BASED ON CATIONIC SOFTENER AND HIGHER ALKYLSULFONATE, PROCESS FOR ITS PREPARATION AND ITS APPLICATION - Google Patents

Abstract

AN ADVANCED TISSUE SOFTENING COMPOSITION IS OBTAINED BY THE SYNERGIC COMBINATION OF A CATIONIC SOFTENER AND A SUPERIOR ALKYL-SULPHONATE. THE PREFERRED CATIONIC COMPOUNDS ARE A QUATERNARY AMMONIUM SALTS WITH TWO LONG CHAIN ALKYL GROUPS AND TWO SHORT CHAIN ALKYL GROUPS AND B IMIDAZOLINIUM SALTS WITH A LONG CHAIN GROUP IN POSITION 2. THE ALKYL- (IT IS PREFERRED SULFONATES ARE THE PARAFFIN-SULPHONATES IN CA C. THE PREFERRED CATIONIC COMPOUND TO PARAFFIN-SULPHONATE RATIO IS BETWEEN 5: 1 AND 12: 1 ON A WEIGHT BASE. THE PREFERRED FORM OF THE COMPOSITION IS AN AQUEOUS DISPERSION CONTAINING 2 TO 5 BY WEIGHT OF CATIONIC COMPOUND AND 0.2 TO 1 OF PARAFFIN SULPHONATE. THE INVENTION ALSO RELATES TO THE TREATMENT OF THE LAUNDRY DURING THE RINSING CYCLE OF THE LAUNDRY OPERATION WITH THE SAID COMPOSITION.

Description

The present invention relates to per-

  manufactured, very effective, for the softening of tissues using on the one hand a cationic compound for

  tissue softening, or a mixture of such

  and, on the other hand, a higher Calkyl) sulfonate which, in itself, does not provide a softening effect to the washed laundry. The invention also relates to the manufacture and

  the use of these compositions The synergistic effect

  Markable combination of cationic compound and paraffinsulfonate allows the formulation of softener compositions with lower content of active ingredient (IA) than when using a simple cationic material to obtain a comparable softening effect This allows greater latitude in the preparation of

  compositions as well as considerable money savings.

  It has been empirically determined that for a normal wash load (e.g. 3.5-4.5 kg) of a common washing machine using about 35 liters of water, at about 60 grams of 6% cationic conditioner

  active ingredient provided very acceptable relaxation

  ble On a rating scale from l to 10 of estimation of

  flexibility, this means a score of about 9 to 10.

  At 6 and above, there is a noticeable difference for the user between the values of 6, 7, 8,

9 and 10.

  From 1 to 5, washed items are not at all

  satisfactory and have a rough and "cardboard" feel.

  Naturally, the specialist who has more experience and knows the details better can discern the differences among all these numerical estimates. The 6% level of cationic active ingredient has been the general industry standard, because higher concentrations in aqueous systems are often difficult to formulate, stability may be poor, flowability may be poor, gel formation may be a serious problem, and dispersibility in wash water may be difficult, which can result in a poor softening effect and / or the formation of spots. U.S. Patent No. 4,000,077 describes improved fabric softening compositions combining a cationic softener with

  a long-chain aliphatic alcohol sulfate (

  ethoxylated alcohol sulfates) It is obvious from this patent, and this has been established empirically,

  than lower levels of total active compounds (i.e.

  less than 6%) could provide softening

  equivalent to that of a 6% cationic compound

dient active alone.

  According to the patent of the United States of America

  No. 3 997 453, softening compositions are obtained.

  fabrics with better dispersibility in cold water through the combined use of minor amounts of particular anionic sulfonates Reports of the cationic compound to the compound are indicated

  anionic from 80: 1 to 3: 1, from 50: 1 to 4: 1 and from 40: 1 to 5: 1.

  Among the sulfonates described are paraffin-

  C 8 to C 20 O sulfonates Therefore, the present invention proposes to provide a fabric softening composition

  having excellent performance while being economical.

  Another object of the present invention is to

  provide cationic fabric softeners for used fabrics

  health lower levels of active ingredient but which provide a degree of flexibility comparable to that of the cationic compound compositions alone, at levels

superior active ingredient.

  Yet another object of the present invention is to provide a synergistic fabric softening composition combining a cationic softening agent of the quaternary ammonium type with a paraffin sulfonate

long chain.

  Yet another object of the present invention is to

  provide a process for manufacturing the novel compositions

  remarkable and remarkable softening of the tissues

  written here as well as their application in the treatment

  laundry (i.e. softening), in particular

  particular during the rinsing cycle of a washing machine

current automatic worm.

  In accordance with the above goals, a

  tissue softening position, which includes an aqueous dispersion of a cationic tissue softening agent and a long-lasting paraffin sulfonate

  chain with a weight ratio of 5: 1 to 12: 1 (softening agent)

pleating: sulfonate).

  The cationic softeners useful in the present invention are the conventional softeners

  fabrics of the quaternary ammonium type, and in particular

  link quaternary ammonium salts having two long chain groups and two short chain groups

  and imidazolinium salts with a long chain group-

  ne in position 2 dispersible in water Particular preference is given to quaternary ammonium salts comprising two C 12 to C 30 alkyl groups and two C 1 to C 3 alkyl groups (for example chloride, sulphate, methyl sulphate,

  acetate, etc) and the salts of 2 - (C 13 -C 30 alkyl) imi-

  substituted dazolinium 1,1 -di (anion as above).

  In general, the above compounds can be re-

  presented by the following formulas of softeners of the imidazolinium type (A and AA) and quaternary salts (B). Formula A: H C CH +

2 2

N NR X

N R 3

C R 2

R 1 in which:

  R 1 is a C 8 to C 30 aliphatic radical and of pre-

  C 14 -C 18 alkyl or alkenyl ference;

  R 2 and R 3 can have any of the meanings

  R 1 or, preferably, represent a lower alkyl or substituted C 1 -C 4 alkyl group, for example haloalkyl, hydroxyalkyl, acylaminoalkyl, etc .; X is a solubilization anion in water such

  that chloride, bromide, iodide, fluoride, sulfate, methyl-

  sulfate, nitrite, nitrate, phosphate and carboxylate (e.g. acetate, adipate, phthalate, benzoate, oleate, etc.). The preferred compounds have the formula (AA):

H 2 C -CH 2 +

I \ N \ -C 2 H 4-N-C-R 5 X

R 2

R 2 R 4

  R 1 in which R 1 is as defined for formula (A); R 2 can have any of the meanings

  of R 1 or preferably represents an alkyl group

  lower or substituted C 1 to C 4 alkyl, for example ha-

  logenoalkyl, hydroxyalkyl, etc .; R 4 may be hydrogen or a C 1 -C 4 alkyl or substituted alkyl group;

  R 5 can represent R 1 or R 2, preferably a ra-

  C 8 -C 30 aliphatic dical, and more preferably a C 14 -C 18 alkyl or alkenyl group; and

  X has the definition given for formula (A).

  The quaternary ammonium compound meets the formula

the general (B) R +

I

R-N R Y

R

  in which the R groups are chosen from groups

  C 1 to C 30 aliphatic pes, preferably alkyl or alkenyl, aryl (for example phenyl, tolyl, cumyl, etc.); aralkyl (e.g. benzyl, phenethyl, etc.); and their substituents halo, amide, hydroxyl and carboxy; provided that at least two of the symbols R are in C 14 to C 30 and preferably in C 14 to C 22 and the others

  are lower C 1 -C 4 alkyl groups (in part

  methyl or ethyl), and Y is an anion like

defined for X in Formula (A).

  Examples of softeners of the imidazoli- type

  nium include the following within the scope of formula (A) above

  2-Heptadecyl-1-methyl-1-oleylamido- ethyl sulfate

ethyl imidazolinium

  2-Heptadecyl-1-methyl-1 (2-stearoyla-) sulfate

mido) ethyl imidazolinium,

  2-heptadecyl-1-methyl-1 (2-stearoyla-) chloride

mido) ethyl imidazolinium,

  2-coco-1- (2-hydroxyethyl) -1-benzyl-imi- chloride

dazolinium,

  2-coco-1- (hydroxyethyl) -1- (4-chlorobu-) chloride

tyl) -imidazolinium,

  2-coco-1- (2-hydroxyethyl) chloride -1 l-octadeceny-

imidazolinium,

  2-tall oil-fatty chloride-1- (2-hydroxyethyl) -1-

benzyl-imidazolinium,

  2-tall oil-fatty chloride-1- (2 hydroxyethyl) -1-

(4-chlorobutvl) iiidazolinium,

  2-heptadecenyl-1 (2-hydroxyethyl) chloride -1 (4 chlo-

robutyl) -imidazolinuim.

  2-heptadecenyl-1- (2-hydroxyethyll) chloride 1-ben-

zyl-imidazolinuim.

  2-Heptadecyl-l (hydroxy & thyl) l oc- ethyl sulfate

tadecyl-imidazolinuim.

  Examples of cationic compounds of formula (B) include

  take the following: Distearyl dimethyl ammonium chloride Diethyl tallow dimethyl ammonium Dihexadecyl dimethyl ammonium chloride Distearyl dimethyl ammonium bromide (Hydrogenated tallow) dimethyl ammonium chloride Distearyl di (isopropyl) chloride ammonium

  Distearyl dimethyl ammonium methyl sulfate.

  In addition to the cationic softener component of the present invention, it can also be incorporated into

  the aqueous compositions of many additional materials

  conventional or many optional components

  conventional additional elements which do not disturb the stability or / or the functional characteristics of the present invention. Thus, for example, there may be

  minor amounts of various surfactants and in part

  certain surfactant phosphoric esters which may

  may be advantageous to obtain an antistatic action on the washed articles These additional components

  classics also include fragrances, colo-

  rants, pigments, germicides, blowing agents

  optical, anti-corrosion agents (silicate of so-

  dium), - etc. When used, each of them can represent for example 1% by weight of the compositions

of the invention.

  It may also be desirable to reinforce and / or modify the viscosity characteristics of the composition of the present invention by the addition of an electrolyte such as calcium chloride, sodium nitrate, sodium formate, etc. in proportions

  between about 0.05 and about 5% by weight.

  Secondary amounts of other ingredients may

  also be incorporated, for example alkanols

  such as ethyl and isopropyl alcohol as well as conventional opacifiers, in particular

  types of resin emulsion well known in the art.

  It is naturally obvious that most of the ma-

  Third-party products contain a mixture of fragments.

  Thus, the long-chained substituents of the compounds ca-

  They can not only consist of a single long carbon chain, but more probably of a mixture.

  regard, a quaternary salt particularly useful in the-

  which alkyl substituents are derived from tallow

  may contain a mixture of about 35% C 16 and 60% C 18 and secondary amounts of C 14 Also, paraffin sulfonate can be a single chain product, but again this is more generally '' a mixture, and preferably such a mixture could be a mixture of C 14 to C 17 (for example 26% of C 14; 32% of; 25% of C 16; 14% of C 17; 4% of C 13 ; 1.5% of

  C 18 and 0.5% C 12) Other mixed alkyl groups may

  can naturally be used, but those that we pre-

  contain at least about 90% in the range of

C 14 to C 17 '

  In general, the aqueous compositions of the present invention contain from 2 to 5% of the cationic compound and

  0.2 to 1% of the paraffin sulfonate, the ratio of the

  cationic sulfonate if between 5: 1 and 12: 1.

  Preferred compositions have a total content of ingredient

  active ingredient (i.e. cationic compound plus sulfo-

  nate) from about 4% to about 6%, the range from 4% to 5.5%

  being particularly preferred and a report still pre-

  of the cationic sulfonate compound being about: 1.

  The preferred general process for the preparation of the

  sitions of the present invention depends on whether a discontinuous or continuous technique is used In a

  discontinuous process, heating about 2/3 of the quan-

  water content of the formulation at approximately 35-50 ° C Separately, the cationic compound and the paraffin-sulfonate are combined to form a fluid mixture (generally by heating

  at 50-550 C) The latter is then added to the water before

  lably heated and mixed until a homogeneous mass is obtained The rest of the water is then added

while mixing.

  In a continuous process, the premix of cationic compound and paraffin sulfonate (at 50-55 C) is added to the total amount of formulation water which has

been heated to around 70 C.

  The following examples illustrate the present invention.

  without limitation Parts are expressed by weight

unless otherwise stated.

EXAMPLES 1

  (A) A 40 x 40 cm cotton towel previously washed six times to remove any material that may remain on the towel is rinsed with tap water at room temperature and, after air drying, it is cut into 5 pieces Each piece is treated with 1.5 g of an aqueous composition containing 4% distearyldimethyl ammonium chloride (DSDMAC). The softened towel pieces are estimated by a

  comparison method in pairs with respect to

  following positions also used to treat

towel as above.

  (B) 1.5 g of aqueous softener containing 3.75% DSDMAC and 0.14% sodium paraffin sulfonate in

C 14-17 (SAS)

  (C) 1.5 g of aqueous softener containing 3.5% of DSDMAC and 0.28% of SAS (D) 1.5 g of aqueous softener containing 3.25% of

DSDMAC and 0.43% of SAS.

  The results of the evaluation indicate that (C) is

  the best, (D) coming next, followed by (A) then (B).

  It should be noted that (C) and (D) contain significantly less cationic compound and even less total active ingredient than (A) (cationic compound alone) while giving a better softening effect.

  case of (B), the amount of SAS is too small to give

  ner the synergistic effects shown by (C) and (D) which

  are examples of the present invention.

  Other examples of aqueous compositions of the present invention are the following:% of DSDMAC% of SAS Example 2 3.67 0.52

3 4.40 0.425

4 4.40 0.90

5 4.00 0.33

  The DSDMAC of the above examples has a molecular weight

  area of about 575 and includes, in addition to the alkyl-

  C 18, some C 16 alkyl groups.

  Paraffin sulfonate has a molecular weight of about

  about 328 according to the Epton method.

Example 6

  Each of the examples l B, 1 C, 1 D, 2, 3, 4 and 5 above

  sus is repeated using the following cationic and paraffinsulfonate compounds giving comparable results A Di-octadecyl methyl diethyl ammonium B Di-hexadecyl di-isopropylammonium acetate C Di-eicosyl dimethyl ammonium bromide

  D 2-Heptadecyl-1-methyl-11-oleylamide ethyl sulfate

doethyl-imidazolinium

  E 2-Coco-1- (2-hydroxyethyl) -1-benzyl- chloride

imidazolinium

  F Distearyl chloride, hydroxypropyl-methyl-ammo-

nium G C 16 paraffin sulfonate

H C 18 paraffin sulfonate.

  The aqueous softening compositions of the present invention are generally usable as other compositions of the same type, in particular useful.

  in the rinse cycle of an automatic washing machine

  that in such operations as in any other

  desired method of processing clothing, the composites

  tions are usually used to give usual-

  an active ingredient concentration of approximately

  0.005% to 0.3% based on the weight of the garments processed

  tees, preferably from 0.007% to about 0.2%, and better

  still from about 0.01% O to about 0.15%.

Claims (5)

  1 Aqueous composition for fabric softening characterized in that it comprises from 2% to 5%   a cationic softener and from 0.2% to I% of a paraffin-sul-   fonate n C 14 to C 22 in a weight ratio of about 5: 1 to 12: 1.   2 Composition according to Claim 1, characterized in that the cationic softener is chosen from quaternary ammonium salts comprising two long chain aliphatic groups and two aliphatic groups   short chain and imidazolinium salts -1,1 -disubsti-   killed with a long chain group in position 2 dis- persible in water.   3 Composition according to claim 2, character-   laughed at in that the cationic softener is distearyldymethyl ammonium chloride and paraffin sulfonate   is a C 14 -C 17 paraffin sulfonate.   4 Composition according to claim 3, character-   laughed at in that the softener weight ratio   cationic sulfonate is about 10: 1.   Process for the preparation of a composition according to Claim 1, characterized in that a liquid pre-mixture of the cationic softener and the paraffin sulfonate is added at a temperature of about 70 C to a preponderant amount of the weight of water of   formulation, which has been preheated to a temperature of   about 35 O to about 75 C, and mixed to obtain   a homogeneous dispersion of the active ingredients in water.   6 A method of treating clothes intended to soften them, characterized in that a sufficient amount of a composition according to   claim 1 to obtain a concentration of about   ron 0.005 to about 0.3% of this composition based the weight of the clothes.