SK271392A3 - Soap preparation - Google Patents

Abstract

Soap composition transformable into particles or flakes which are readily soluble in cold water, especially suitable for use in washing agent compositions based on detergents and soaps, containing a mixture of fatty acids neutralised with a suitable base, characterised in that the Dalican titre of the fatty acid mixture is less than 38 DEG C and preferably between 10 and 30 DEG C.

Description

The present invention relates to soap compositions that are trans -ormeable to particles or flakes that are readily soluble in cold water, particularly suitable for use in detergent and soap based detergent compositions.

BACKGROUND OF THE INVENTION

The current tendencies are to reduce the temperature of washing, both in washing machines and hand washing, either because of energy savings or a change in outdated washing habits in some countries. Another reason may be to wash delicate delicate fabrics. These tendencies therefore require compositions of detergents that are readily dispersible and soluble even at low wash temperatures, with temperatures as low as 10 ° C and. Deň: 32 ° C.

Furthermore, the present tendency is to use the present agent compositions which contain soaps as components, partially or totally unpaid by synthetic surfactants, both for laundry and hand-wash compositions.

It is known that in the case where only coconut fatty acids (Dalican titre = 22 to 24 ° C) saponified by sodium hydroxide are used, soap is obtained which is soluble but, due to its difficult solubility, is not suitable, for example, flakes. Another disadvantage of these soaps is their tendency to spring dust and their tendency to decompose. These properties make the prepared soaps unsuitable, for example, for incorporation into a detergent composition of the type described, for example, in patent application IT 1255A / & 9 by the applicant.

It is also known that the saponification of acids by means of alkali other than sodium hydroxide, for example potassium hydroxide, ammonium hydroxide or triethanolamine, may increase the cold soiling of the soap, but the physical characteristics do not allow such soaps (oily soaps) to it has been formulated to make these flakes of mind-made compositions fine flakes whose physical soaps are suitable for the addition of detergents.

The present invention

Surprisingly, it has been found according to the invention that it is possible to achieve a significant improvement in the physical properties of the soap produced thereby making it suitable for transformation into. fine flakes wherein the soap produced retains excellent cold solubility, which according to the invention is achieved by using a blend of fat titers lower in oils or fatty acids having a Dalican than 36 ° C, with a titer in the range of 10 to 30 ° C, and saponifying these mixtures with sodium hydroxide, potassium hydroxide, ammonium hydroxide or alkanolamines.

In the following, the invention will be explained in more detail by way of example. However, these examples are illustrative only and are not intended to limit the scope of the invention, which is clearly defined by the terms of the claims.

DETAILED DESCRIPTION OF THE INVENTION

In the following examples, said soap compositions are obtained by saponifying a common mixture of tallow and coconut oil with sodium hydroxide, wherein Example 1 relates to the comparative composition and Examples 2 and 3 relate to two sodium soap compositions of the invention.

Example 1

Sodium soap composition obtained from a general tallow / coconut oil mixture.

Fatty acids Content (% by weight) ^C 8 0.9 ^C 10 1.0 ^C 12 7.3 ^C 14 6.0 ^C 16 ⁺ 16 27.0 ^C 18 15.2 ^C 18 ^{'+ C} 18 ⁼ 43.6

Dalicon titre = 38.0 ° C

Example 2

A sodium soap composition obtained from a composition of the invention characterized by a Dalican titre of 23.0 ° C.

Fatty acids Content (% by weight) ^C 8 3.5 ^C 10 4.0 ^C 12 24.5 ^C 14 9.2 ^C 16 ^{+ C} 16 “ 12.5 n ' 18 3.0 C - + P - ^ 18 18 43.4

Example 3

A sodium soap composition obtained from a composition of the invention characterized by a Dalican titer of 16.0 ° C.

Fatty acids Content (% by weight) ^C 8 3.5 ^C 10 4.0 ^C 12 25.3 ^C 14 io, 3 ^C 16 ^{+ C} 16 “ 9.8. 18 ° 2.3 ^C 18 ^{+ C} 18 ⁼ 45.1

The soaps prepared according to the above compositions have been formed trensively. flakes having a length of 2 to 5 mm and a width of 0.3 mm. The flakes thus prepared were introduced into water at various temperatures, while the time of complete dissolution of the soap flakes at different temperatures was not reduced. In the following table, the relative dissolution times of said soap flakes of Examples 1 to 3 in water (expressed in seconds), measured as a function of water temperature, are given.

TABLE 1

Soap from Soap from Soap from of Example 1 of Example 2 of Example 3 T (° C) Dissolution times in seconds 20 100 17 10 30 67 11 7 40 13 9 5

It can be seen from the table that the dissolution times of said soaps of the invention are substantially lower than the dissolution times of said comparative soap of Example 1.

The flakes obtained from the soaps of the present invention further exhibit excellent physical properties in terms of cohesion and do not tend to have excessive dustiness with decomposition or increased tackiness during rolling and final processes and their subsequent use in detergent powders.

The above compositions also allow the soaps to be dried to very low moisture levels, which are below 5%, while the processing properties for obtaining the flakes remaining unchanged with its physical properties are not adversely affected so that they can also be used in products in which the ingredients in the presence of moisture easily decompose.

These properties make said soap flakes according to the invention particularly suitable for use in detergent compositions of the type described in patent application 12597A / 89 of the same applicant.

Higher solubility at low temperatures leads to increased washing performance, especially in the case of greasy dirt. Furthermore, the use of the compositions of the invention prevents the settling of undissolved soap particles from the washing machine and the laundry being removed.

Even soaps described in the above examples, which were obtained by saponifying a fatty acid saponification mixture with sodium hydroxide, are still contemplating the use of potassium hydroxide as a saponification agent providing soaps that are even more soluble than sodium soaps, but which do not have the tackiness of conventional potassium soaps.

Claims (8)

PATENT 1. E-soap composition transformable n? particles or flakes that are readily soluble in cold water, particularly suitable for use in detergent and soap-containing detergent compositions containing a neutralized fatty acid base composition, characterized in that the Dalican titre of said fatty acid mixture it is less than 38 ° C and is preferably between 10 and 30 ° C. The composition of claim 1, wherein: wherein said mixture of fatty acids comprises acids. mix Cg ~ 1 & msst3. The composition of claim 1, wherein said neutralizing base is sodium hydroxide. * 4. The composition of claim 1 wherein said neutralizing base is potassium hydroxide. 5. The composition of claim 1 wherein said neutralizing base is ammonium hydroxide. 6. The composition of claim 1 wherein said neutralizing base is an alkanolamine. A soap composition according to claim 1, characterized in that it is particularly suitable for the transformation into fine flakes, powder or granules. The composition of claim 7. The width of said flakes is between 1 and 10 mm and the width is of the order of 0.3 mm. Composition according to claim 7, characterized in that the size of said granules ranges from 0.2 to 3.00 mm. 10th Kompoz ice share of some of the preceding claims, v y z n a c e n a t í m that further contains soluble color va the sky pigments. 11th composition share of some previous claims, v y z n and t í m that it contained contains sodium soap obtained from the following fatty acid mixture, the indicated content by weight of which: Fatty acids Content (% by weight) 3.5 4.0 24.5 9.2 12.5 3.0 43, 4 wherein said fatty acid mixture is characterized by a Dalian canre titer of 23.0 ° C. Composition according to any one of the preceding claims 1. to 10, characterized in that it contains sodium soap obtained from the following mixture of fatty acids in percent by weight: ^C 8 3.5 ^C 10 4.0 r 5.3 ^ ^C 14 10.3 ^C 16 ^{+ C} 16 9.8 ^C 18 2.3 ^C 18 ^{'+ C} 18 ⁼ 4 ?, 1 characterized by a Dalican titre of 16.0 ° C. 13 of the foregoing claims, either alone for breasts in household washing machines or as an additive to detergents with high or controlled sudsing properties. washing machines or for washing hard surfaces.