CS218312B1 - Method of perfumation of the soaps - Google Patents

Abstract

The invention relates to a process for perfuming soaps, detergents and cosmetic products in which a stabilized perfume in liquid or gel-like form is incorporated in an amount of 0.3 to 6.0% by weight optionally with the simultaneous addition of other ingredients. A stabilized perfume may contain liquid perfume in an amount of 60% to 98% by weight and polymers based on hydrocarbons or halogenated hydrocarbon derivatives or alcohols, their ethers or esters, or organic acids and their derivatives, or polysaccharides and their derivatives, or polymers with a heterogeneous chain and/or copolymers or terpolymers formed from the above-mentioned monomers, in an amount of 2% to 40% by weight.

Description

The purpose of the invention is to stabilize the perfume component in soaps during storage by reducing its volatility and increasing its resistance to chemical changes.

This is accomplished by dissolving in the perfume a polymer based on hydrocarbons and derivatives thereof, alcohols, ethers and esters thereof, organic acids and derivatives thereof, or a heterogeneous chain-containing polymer or nitrogen-containing copolymers and terpolymers and their mutual interactions The liquid composition is added to the soap composition in an amount of from 0.3 to 6.0% by weight.

The present invention relates to a process for perfuming soaps, in particular toilet products, by which the stabilization of the perfume component in such products during storage is reduced by reducing its volatility and increasing its resistance to chemical changes.

So far, known methods of perfuming soaps consisting primarily of sodium salts of higher fatty acids, various kinds of additives, possibly other surfactants, water, coloring and perfume, are based on direct dosing of the liquid perfume composition into the soap composition. The perfume is added either alone or in admixture with some other ingredients before mixing and homogenizing with the soap mass. A disadvantage of this process of perfuming the soap is that the perfume composition is released from the finished soap by diffusion and volatilization into the environment, thereby reducing its content considerably during storage. This decrease is particularly noticeable in the case of more volatile perfume compositions already in the first few weeks after production, during which the initial perfume content is reduced by up to 20% during the first four weeks. - ° / o. -. For other relatively less volatile perfume compositions, there may be a decrease in the initial perfume content of up to -30 wt. ° / o. The disadvantage of this process - the perfuming of soaps - is therefore that, in a relatively short time after production, the product's performance in terms of perfuming is reduced. This is particularly evident in the case of products which, for various reasons, are stored for a longer period of time before use.

Other known soap perfume methods utilize - to increase the stability of the soap perfume by the addition of an additional substance, usually a powder adsorbent, such as porous-hydrated silica, as described in German Pat. 837 914. By the addition of the aforementioned perfuming process, the sorption of the volatile perfume composition in the porous material results in a decrease in its volatility and thus an increase in the stability of the perfume product, especially during storage. The disadvantage of this method, however, is that the sorption and desorption properties of the sorbent to the sorbed substance depend on their properties, in particular the chemical composition of the groups and the bonds applied in the physical and respiratory processes. physicochemical forces arising in the friction process. Due to the different chemical composition of the perfume compositions, which represents a rich mixture of different chemicals, the use of individual soobents is greatly reduced. A further disadvantage of this method of increasing the stability of the perfume in soaps is that on some existing process devices it is not possible to automatically dispense the powdered powder due to the arrangement of the liquid component dispensing devices. Although, according to the cited patent, an additive of hydrated silica is added with other ingredients to the soap composition and thus utilizing some of the existing devices, another disadvantage of this process is that perfume is added to the whole soap composition containing sorbent, does not guarantee that all perfume is soaked and thus stabilized only on this sorbent. Even in the soaps so produced, there is a decrease in the perfume content of the product during storage. Especially in the case of multi-volatile perfumes, the content decreases on average by 15 to -2-0 masses during the first four weeks. -%. It is further known from US Pat. No. 4,209,417 use of perfumes in detergents in the form of particles consisting of a continuous polymer matrix in which the perfume drops are dispersed unevenly by means of an emulsifier. This process produces perfumed particles which have not only an immediate but also a long-lasting perfume effect. They consist of 30 to 70 wt. % water-insoluble perfume, from 25 to 65 wt. % water-soluble polymer and emulsifier. Likewise, perfume carriers based on carbonyl-ethoxylate, as is known in the art, are used. U.S. Pat. -C. In both cases, a process for stabilizing perfumes with water-soluble polymeric substances capable of forming solid gels is described, but requires use to achieve the desired effect. of a relatively high water-soluble polymer content, so that the perfume to polymer mass ratio is low and is typically in the range of 0.5: 1 to 3: 1, which means that with such a stabilized perfume, introduces a retention-high ids-a ^ h into the product. - other - substances,. - which do not - usually affect or adversely affect its performance. Another disadvantage is that essentially capitulation-stabilized perfume is prepared by a separate manufacturing operation that increases the cost of perfuming the detergents. A further disadvantage lies in the behavior of the continuous polymer matrix in aqueous systems, which limits the use of the stabilized perfume to only some detergents, for example powdered detergents, where in addition to a low moisture content. - there is no mechanical stress and disruption of the stabilized perfume when the product is perfumed, which cannot be excluded in the perfuming and soap making. According to - above-quoted Brit. This stabilized perfume is not intended to perfume other products, but is the final form as an air freshener with a prolonged perfume effect.

The aforementioned drawbacks are eliminated by a process of perfuming soaps, especially toilet soaps, in which the perfume is incorporated into the soap mass to be processed, with the addition of other ingredients. It consists in dissolving or swelling in a perfume a polymer based on hydrocarbons or halogen derivatives of hydrocarbons or alcohols, their ethers and esters or organic acids and their derivatives, or a polymer with a heterogeneous nitrogen-containing chain with a linear structure, and or copolymers and terpolymers of the above monomers and mixtures thereof in an amount of from 2 to 40 wt. Whereupon the liquid composition is added to the soap composition in an amount of from 0.3 to 6.0 wt. %.

In the perfume, polyethylene, polypropylene or polystyrene having a melt flow index of 0.5 to 5 g / 10 min, as polyvinyl chloride of mol. wt. 20,000 to 210,000, such as alcohols, ethers and esters thereof, polyvinyl alcohol, polyphenylene oxide, polyvinyl acetate or polyethylene glycol of mol. wt. 6,000 to 320,000, such as organic acids and derivatives thereof, polyacrylic acid, polymethacrylic acid, polymethyl methacrylate, polybutyl methacrylate in mol. wt. 6,000 to 320,000, such as a heterogeneous chain polymer with a linear structure of urea-formaldehyde, a melamine-formaldehyde resin with a linear structure, such as a copolymer of vinyl chloride and vinyl acetate of mol. wt. 30,000 to 160,000 butyl methacrylate and methyl methacrylate of mol. wt. 12,000 to 240,000 and a terpolymer of acrylonitrile, butadiene and styrene having a melt index of 5 to 20 g / 10 min.

The process according to the invention makes it possible to process a soap mass having a fatty acid titer of 36-49 ° C.

The soap perfuming process of the present invention utilizes the ability of the perfume composition to sequentially soak, wet, and convert the polymer into a swollen, gel to soluble form, thereby forming structurally flowing systems with the perfume contained in the polymer. This achieves the formation of a gel system containing perfume in its structure which, in contact with the soap mass, closes the perfume component and substantially reduces its volatility and prevents possible chemical changes during storage. These advantages of the perfume process of the present invention, as compared to the prior art processes, are underlined by the fact that the perfume composition can be dosed in a similar manner in the present process equipment in the form of a well pumpable liquid composition containing the polymer as a soap perfume stabilizing component. The properties of the liquid perfume / polymer blend make it possible to combine them with other ingredients used in the production of soaps, such as titanium dioxide, chelating agents, dyes, water, and the like, and co-dispensing the liquid soap composition. The properties of the perfume / polymer blend in the soap composition achieved by the perfume process of the present invention make it possible to stabilize the perfume composition in the soap and thereby maintain a high perfume content even after prolonged storage, thereby enhancing the perfume performance of the product. This effect of the perfume process according to the invention is illustrated by the perfume contents of the soap having more or less volatile perfume. In the case of the more volatile perfume based on decanol t 120 ° C, nonanol t 102 to 104 ° C, decan t tv 82 to 90 ° C, nonan t tv 82 to 85 ° C, citral t tv 143 to 145 ° C, geranylacetate tv 143 to 145 ° C, terpinyl acetate at 110 to 112 ° C, etc., an analytically recorded demonstrable decrease in the initial perfume content of the soap compared to previously known soap perfume methods where the content of the same type of perfume decreased by up to 20 masses over the same period, why, original ^ content. After eight months of storage, the perfume content was only 15 to 20% by weight. % compared to up to 60 wt. % decrease in the previously known perfume methods. For less volatile perfumes based on diethyl phthalate, m.p. 298 ° C, anisaldehyde. m.p. 250 ° C, linol acetate b.p. 96 ° C (1.3 kPa), benzyl acetate b.p. 323 ° C, geranfol b.p. 230 ° C, etc., after '8 months' storage, the maximum was 8-14 wt. % compared to 25 to 30 wt. % for processes where the perfume is not stabilized. The effect of the perfume process according to the invention is therefore that it can be reduced by up to 50% by reducing the perfume in soap making. % to achieve the same or even higher intensity of the odor of the product after a longer storage period compared to the prior art perfuming methods. Another 'notable effect' of the perfume process of the present invention is that the polymer, when mixed with the perfume, reduces the fatty acid titre of the soap mass by up to '4 ° C, which is beneficial in improving the processability and homogeneity of the soap and since said silabilizers, in addition to their own fixation effect, also act as coaters. This makes it possible to process relatively low-quality soap compositions from fatty sticks, where the fatty acid titer is higher than 45 to 47 ° C than is normally required for the processability and soap properties of the soap. It is also beneficial in substantially reducing soap suds in comparison with soaps made with the same soap compositions known in the art.

Soaps have been evaluated by a method whereby laboratory soap samples are repeatedly subjected to processes that undergo normal use and cracks and cracks on the surface are visually scored during the test using a scaling scale using photographic standards created for each type of soap. The resulting value, which is a measure of the cracking resistance of the soap, may have a lowest value of 2 (soap 'does not change its surface throughout the test)' and a maximum value of 10 (soap will crumble). The soaps containing the stabilized perfumes according to the invention had a resistance to cracking higher and always had a score of 1 to 2 points lower than the soaps with unstabilized perfumes.

The process of perfuming the soaps of the present invention is described below in several examples:

Example. 1. A conventional process for the production of toilet soap is 95.995 wt. % of a soap mass containing 79 wt. Of a fatty acid having a titer of 43.2 ° C added 0.2 wt. % titanium dioxide, 0.8 wt. % carboxymethylcellulose, 1.0 wt. '. % water, 0.005 wt. % dye and at 20 ° C 3.0 wt. % liquid mixture more. volatile perfume based on geranylation of. terpinyl acetate and decanol; and a polymer. on . based on copolymers of acrylonitrile, butadiene. and '. styrene -o melt index. g / 10 min. and a viscosity of the perfume / polymer solution of 0.92 Pa. s, the ratio by weight of the two components being 1: 0.15 to each other. After. mixing the soap mass with the ingredients was further mechanically processed on a sawing machine and pelotez. After punching in the usual manner. a toilet soap was obtained, perfectly homogeneous throughout the mass, plastic and solid. . with a very good washing effect in preserving perfume until the final soap consumption. The perfume content of the soap remained virtually unchanged after two months of storage and, after eight months, the decrease was only 15%. % of original content.

Titr. of fatty acids after addition. polymer. stabilized perfume dropped to 40.8 ° C, which resulted in improved plasticity. production capacity of technological equipment. At the same time, the resistance to squeezing of the soap surface increased during use and showed on the scoring scale according to the method previously described. soap containing polymer value

3.2 as opposed to 4.4, which had the same soap when evaluated by the same methodology containing the same amount of non-milled. perfume.

Example 2

In the same manner as in Example 1, it was prepared. toilet soap except that a liquid blend of perfume and a polymer based on copolymers of vinyl chloride and vinyl acetate of mol. weight of 140,000, in which the ratio by weight of the two components was 1: 0.25 and the viscosity was 1.06 Pa.s. A toilet soap with the same storage properties and perfume stability as in Example 1 was obtained. The decrease in perfume content after eight months of storage was only 17 wt. % of original.

Example 3

By a conventional technological process on a continuous process equipment for. the toilet soap was made into a soap mass containing 80 wt. % of fatty acids of 46.8 ° C titrated liquid suspension consisting of 60 wt. % of a mixture of less volatile perfume based on linolylacdate, anisaldehyde, benzyl acetate and geraniol and a polymer based on copolymers of acrylonitrile, butadiene and styrene with a melt index of 16 g / 10 min, where the weight ratio of both components was 1: 0.12, 2, 5 wt. % titanium white, 1.5 wt. % Sodium salt of nitrolotriacetic acid and 36 wt. % water. The viscosity of the suspension thus prepared was 0.57 Pa. The dosage of the liquid suspension was. chosen to mutual. mass ratio. against the soap roar was 2:98. After homogenization in the mixing and homogenization pelotesis and further processing of the resulting mass on the n and the peloteses and embossing, a toilet soap of the same characteristics as in Example 1 was obtained and the perfume loss after eight months of storage was only 8 wt. % of the original quantity.

The fatty acid titer dropped to 42.3 ° C after polymer addition. This drop allowed perfect processing and homogenization of the soap bar with the initially unbearable high fatty acid titer into the perfect final product. Soap cracking was 4.1 versus 5.3 for the same soap with destabilized perfume. Soap was evaluated by the method described in the text.

Example 4

In the same manner as in Example 3, another toilet soap was prepared. however, the liquid suspension was a mixture of perfume and polyvinyl acetate based polymer. in mol. wt. 120,000, wherein the weight ratio of both components was 1: 0.20 and whose viscosity was 0.70 Pa. A toilet soap having the same properties as in Example 3 was obtained, with a loss of perfume after storage for six months of only 7% by weight. why, from the original amount.

Example 5

The same way as. in Example 1. a toilet soap was prepared with the difference that a liquid mixture of less volatile perfume and polystyrene of mol. wt. 180,000, in which the polymer content was 0.285 g / 1 g of the mixture and whose viscosity was 2.74 Pa. 'with. A toilet soap having the same properties as in Example 1 was obtained, with the loss of perfume after eight months of storage being 2 to 2.5 k ^. lower than soap prepared in the same way but without the use of a polymer.

Claims (8)

SUBJECT A process for perfuming soaps, in particular toilet soaps, wherein the perfume is incorporated into the soap mass to be treated with the addition of other ingredients, characterized in that the perfume polymer dissolves or swells the hydrocarbon or halogen derivatives of hydrocarbons or alcohols, ethers and esters thereof or organic acids and derivatives thereof, or a nitrogen-containing heterogeneous chain-containing polymer with a linear structure, or copolymers and terpolymers consisting of the abovementioned monomers, and optionally mixtures thereof in an amount of from 2 to 40% by weight, why this mixture is added to soap compositions in an amount of from 0.3 to 6.0 himot. percent. 2. The process according to claim 1, wherein said hydrocarbon comprises polyethylene, polypropylene or polystyrene having a melt flow index of 0.5 to 5 g / 10 min. 3. The process of claim 1 wherein the halogenated hydrocarbon derivatives employ polyvinyl chloride of mol. wt. 20,000 to 210,000. 4. A method according to claim 1, characterized by OF THE INVENTION by using polyvinyl alcohol, polyphenylene oxide, polyvinyl acetate or polyethylene glycol by moles as alcohols, their ethers and esters. wt. 6,000 to 320,000. 5. The process according to claim 1, wherein the organic acids and their derivatives are polyacrylic acid, polymethacrylic acid, polymethyl methacrylate, polybutyl methacrylate of mol. wt. 6,000 to 320,000. 6. A process according to claim 1, wherein the heterogeneous chain polymer is a urea-formaldehyde, mellaminophorimaldehyde resin having a linear structure. 7. The process of claim 1 wherein the copolymer is vinyl chloride and vinyl acetate of mol. wt. 30,000 to 160,000, butyl methacrylate and methyl methacrylate of mol. wt. 12,000 to 240,000 and a terpolymer of acrylonitrile, butadiene and styrene having a melt index of 5 to 20 g / 10 min. 8. A process according to claim 1, wherein the soap mass to be treated has a fatty acid titer of 36-49 [deg.] C.