MXPA97006001A - Compositions of fragrance with gel consistency and autosopo characteristics - Google Patents

Abstract

An aqueous gel composition with self-supporting characteristics is provided, consisting essentially of: a) from 1 to 20% of a fragrance material (preferably a fragrant oil), b) from 2 to 10% of one or more compounds of carrageenan or mixtures of carrageenan, c) from 0 to 2% of a preservative, d) from 0 to 2% of a coloring agent, and e) from 66 to 97% of water, all percentages are by weight of the composition

Description

COMPOSITIONS OF FRAGRANCE WITH CONSISTENCY OF GEL AND CHARACTERISTICS OF AÜTOSOPORTE Field of the Invention The present invention relates to fragrance compositions and, in particular, to a gel-type fragrance composition and to a method for preparing the composition. Fragrance compositions are commonly used as refreshers of the environment and can be provided in the form of a gel. These compositions typically contain gelling and perfume agents, together with a solvent, surfactant and other ingredients. According to the invention, there is provided an aqueous composition with gel consistency and self-supporting characteristics consisting essentially of: a) from 1 to 20% fragrance material (preferably an oily fragrance), b) from 2 to 10% of one or more carrageenan compounds or carrageenan mixtures, c) 0 to 2% of a preservative, d) 0 to 2% of a coloring agent, and e) of 66 to 97% of water, therefore the composition does not contain any 1 1 '/ > ~ 'I? solvent or aggregate emulsifier; all percentages are given by weight of the composition. By "gel with self-supporting characteristics" is meant a gel which, at room temperature, has sufficient rigidity to remain firm, without spilling and which maintains its structure. This gel can be used as a stick without support medium and which is capable of standing upright on its own. Carrageenan is a product that is previously derived from algae and is a linear polysaccharide. The term is well known in the art. A mixture of kappa, iota and lambda polysaccharide carrageenans may be present in a suitable manner in the gel composition according to the invention. By "carrageenan mixture" is meant a gelling agent composition comprising one or more carrageenan compounds, together with minor amounts of one or more constituents. For example, the most commercially available gelling agents contain a mixture of carrageenan and smaller amounts of other constituents, such as organic and inorganic salts and a gum. Preferably, the carrageenan mixture used in the gel composition of the invention ? n: < it comprises at least 50% of the carrageenan compound (s), and, more preferably more, 70% of the carrageenan compound (s). A preferred carrageenan mixture for use in the invention is commercially available as "Danagel DKL" from F C. The Danagel DKL comprises a highly purified carrageenan extract, as the main constituent, mixed with locust bean gum and calcium acetate. Other carrageenan mixtures that can be used in the gel composition are those products commercially available as "Satiagel VG11S" (from Sanofi) and "Gelling Agent AF7" (from Cemcolloids).

BACKGROUND OF THE INVENTION In contrast to previously used gel compositions (examples of which are included in GB 11,241,914 and DE 2400273), the gel composition of the present invention does not contain solvents and, moreover, does not contain an emulsifier in a amount conventionally used for solubilization, as previously thought to be necessary in the carrageenan gel compositions. Furthermore, it is desirable that the gel composition of the invention does not contain or practically does not contain surfactant. 1 I > GB 1241914 relates to a gel composition consisting essentially of 1 to 6% by weight of a gelling agent and 99 to 94% of an aqueous medium comprising a volatile deodorant and a carrageenan gelling agent. Document 240027 discloses a composition which essentially consists of less than 5% by weight of a carrageenan gelling agent, up to 15% of a volatile deodorant agent, up to 6% of a compound selected from coloring agents, an emulsifying agent and antifreeze and , at least 70% water.

Detailed Description of the Invention In addition, we have found that the carrageenan (s) or carrageenan mixture (s) per se can act as the gelling agent. Thus, in accordance with the present invention, it is not necessary to add additional gelling agents to commercially available carrageenan mixtures, such as Danagel DKL during the manufacture of the gel composition. Preferred preservatives are commercially available preservatives such as Parmetal DF 35 (from Schulke & ayr) and Glycosyl L (from Lonza (UK) Ltd.). Preferred dyes are aqueous or more preferably, oil soluble dyes. The invention allows higher levels of pure fragrance to be incorporated into the composition than is usual for a carrageenan gel, without the need to add additional ingredients to effect this. Thus, in a preferred embodiment of the invention, the fragrance is present in an amount of 4 to 20% by weight. Preferably, the amount of fragrance is from 4 to 12% by weight, more preferably from 4 to 10% by weight. No advantage is gained from the use of more gelling agent than is necessary to provide an effective gel. On the other hand, there must be enough gelling agent present to form a stable gel. Thus, the gelling agent is preferably present in an amount of 2 to 3% by weight, ideally the gelling agent is present in an amount of between 2 and 3% by weight and, particularly, from 2.3 to 2.5% by weight. In a preferred embodiment of the invention, the gel composition consists of: a) from 1 to 20% fragrance material, b) from 2 to 10% of one or more carrageenan compounds or carrageenan mixtures, c) 0 to 2% of a conservator, ; MX d) from 0 to 2% of a coloring agent, and e) from 0 to 0.5% of a surfactant, all percentages are by weight of the composition, the balance being water, in the absence of additional constituents, such as salts or organic or inorganic acids (other than those present in any commercially available carrageenan mixture where said mixture is used). In some cases it may be desirable to add a small amount of surfactant as a humidifying agent, although it is not necessary to add surfactant in amounts conventionally used for solubilization. When present, the humidifying agent will comprise less than 0.5%, more preferably 0.2% or less of the composition. For example, a suitable humidifying agent that can be used in the gel composition of the invention is commercially available as Crillet 4 Super from Croda Chemicals. In addition, the invention provides a method for preparing a gel composition with self-supporting characteristics, which comprises heating water and the gelling agent at a predetermined temperature; cool to 60-70 ° C and add the fragrance material. Optionally, one or more of a preservative, coloring agent and surfactant are also added to the composition. The composition can be molded into an attractive figure. In this way, a preferred method includes the additional step of emptying the composition in a mold before cooling. The invention further provides a method for flavoring rooms, cars, etc., using the gel-like composition of flavor. The composition according to the invention can comprise molded, environmentally cooling gels, which are sold packaged in a suitable wrapper which is impervious to the fragrance. The wrapper is removed before the gel is used to flavor the room or car, for example. The gels are physically attractive and can be displayed or placed in a suitable container. When the fragrance emanation is low at room temperature this can be improved by increasing the air flow over the gel. For example, the gel may be packaged in a molded package that includes a venting means, the venting means may be opened to increase the airflow over the gel. The following examples illustrate the compositions according to the present invention, the methods for making them and their use.

Example 1 The composition (detailed in the table below) is made by heating the carrageenan-gelling agent and water at a temperature of 90 ° C while mixing for 30 minutes. This composition is then cooled to 70 ° C and then the fragrance and the preservative and the dye are added and mixed well for 15 more minutes. This composition is then emptied into a mold and allowed to cool to room temperature for 20 minutes. The composition formed is as follows: Table 2.5% of the carrageenan gelling agent, Danagel DKL (of FMC) 10.0% of the fragrance, Pavlova K28552 (of Robertet) 0.1% of the preservative, Parmetol DF35 (of Schulke &ayr) 0.001 % of a dye such as Dragoco (from Sandoz), water being the balance Example 2 Example 1 is repeated using 2.5% of Satiagel VG11S as the carrageenan gelling agent instead of 2.5% Danagel DKL.

EXAMPLE 3 Example 1 is repeated using 2.3% gelling agent AF7 as the carrageenan gelling agent in place of Danagel DKL.

Example 4 Example 1 is repeated using 5% Danagel DKL as the carrageenan gelling agent instead of 2.5% Danagel DKL. Examples 1 to 4 are repeated using 1.5%, 3.0%, 6.0%, 12.0% and 20.0% of the fragrance material instead of 10% of said fragrance material.

Examples 5 to 13 Example 1 is repeated using the fragrances provided below instead of 10% Pavlova.

Example 5: 10% of Charlotte 56 of Givaudan Example 6: 10% of Frangipan 36 of Givaudan Example 7: 10% of Summer Pudding K / 28552 of Robertet Example 8: 10% of Pineapple Parfait K / 28555 of Robertet Example 9: 10 % of Lemon Soufflé K / 28554 of Robertet Example 10: 10% of Tartufi K / 28594 of Robertet Example 11: 10% of LQ 51898 Pot Pourri of Bush Boake Alien (BBA) Example 12: 10% of LQ 51899 Lavender of BBA Example 13: 10% of Neutrair LQ 51759 of BBA Examples 5 to 13 are repeated using 1.5%, 3.0%, 6.0%, 12.0% and 20.0% of the fragrance material instead of 10% of the said fragrance material.

Example 14 to 22 Examples 5 to 13 are repeated using 2.3% of Satiagel VGllS of Sanofi instead of 2.5% of Danagel DKL.

Example 23 to 31 Examples 5 to 13 are repeated using 2.3% gelling agent AF7 instead of 2.5% Danagel DKL.

Example 32 to 40 Examples 5 to 13 are repeated using 5% Danagel DKL as the carrageenan gelling agent instead of 2.5% Danagel DKL.

Claims (8)

1. NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty and, therefore, the content of the following CLAIMS is claimed as property 1. An aqueous gel composition with self-supporting characteristics, consisting essentially of: a) from 1 to 20% of a fragrance material (preferably a fragrant oil), (Component a) b) from 2 to 10% of one or more carrageenan compounds or carrageenan mixtures, c) from 0 to 2% of a conservative, d) from 0 to 2% of a coloring agent, and e) from 66 to 97% of water, therefore the composition does not contain any added solvent or emulsifier; all percentages are given by weight of the composition.
2. 2. A composition according to claim 1, which further contains from 0 to 0.5% by weight of surfactant.
3. 3. A composition according to claim 1 or 2, wherein the amount of gelling agent is from 2 to 5%.
4. 4. A composition according to any of the preceding claims, wherein the amount of fragrance material is from 4 to 20%.
5. 5. A composition according to claim 4, wherein the fragrance material is present in an amount of 4 to 10%.
6. 6. A composition according to any of the preceding claims that contains a surfactant as a humidifying agent in an amount of less than 0.5% of the composition.
7. 7. A gel composition according to any of the preceding claims wherein component b is a highly purified carrageenan extract as the main constituent, mixed with locust bean gum and calcium acetate. 8. A gel composition consisting of: a) from 1 to 20% fragrance material b) from 2 to 10% of one or more carrageenan compounds or carrageenan mixtures. c) from 0 to 2% of a preservative, d) from 0 to 2% of a coloring agent, and e) from 0 to 0.5% of a surfactant, all percentages are by weight of the composition, water being the balance. 9. A method for preparing a self-supporting gel composition according to any of claims 1 to 8, which comprises heating water and the gelling agent to a predetermined temperature, cooling to 60-70 ° C and add fragrance material; Optionally one or more of preservatives, coloring agents and surfactants can be added. 10. The use of a composition according to any of claims 1 to 8, as a refresher of the environment. 11. A cooling gel of the molded environment, comprising a composition according to any of claims 1 to
8. 8. íüi / "tr-.