JPH03220299A - Bleaching agent composition containing perfume - Google Patents

Abstract

PURPOSE: To prevent the oxidative deterioration of perfume during the storage of a bleaching agent compsn. and to certainly discharge perfume as a time of use by making the composition include perfume in microbial cells, in the bleaching agent compsn. containing a bleaching agent and perfume.

CONSTITUTION: Microbial cells (e.g.; yeast such as Saccharomyces cereviciae), perfume and water are mixed and the mixture is centrifuged to remove moisture and further dried under vacuum or spray-dried to produce capsules wherein perfume is included in microbial cells. Subsequently, the perfume-including capsules are added to a bleaching agent compsn. containing a surfactant if necessary to produce a perfume-containing bleaching agent compsn. Cells of the obtained beaching agent composition are decomposed by high temp. and mixing action in a washing process or by abrasive action in the case of polishing to discharge perfume.

COPYRIGHT: (C)1991,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fragrance-containing bleach composition in which the fragrance is present in encapsulated form. More specifically, the present invention relates to a fragrance-containing bleach composition in which a fragrance is encapsulated in microbial cells.

Bleach compositions, such as bleach-containing detergents, abrasives, etc., are characterized by strong oxidizing properties. However, consumers want such products to have a pleasant aroma, and manufacturers are challenged with finding fragrances that can withstand oxidative environments. Traditionally, this problem has been solved by using sufficiently stable perfume ingredients, such as U.S. Pat.
The problem has been solved by selecting the one described in No. 514.

However, this method imposes very severe restrictions on the ingredients that can be selected as fragrances.

Therefore, there is a need for perfumed bleach compositions that protect the perfume from deterioration due to oxidative environments, yet release the perfume when the product is used by the consumer. Since the bleach composition is either solid or liquid, the protective medium must not be such that mere dissolution in water would release the fragrance.

From GB 1.367,622 a bleach-containing abrasive cleaning composition is known which comprises a fragrance encapsulated in partially hardened gelatin. Bleach-containing laundry detergent compositions containing fragrance in water-soluble microcapsules are disclosed in U.S. Pat. No. 4.145.
It is described in No. 184. However, the production of such microcapsules requires laborious procedures, in particular encapsulation by coacervation, and is therefore not completely satisfactory.

This time, a fragrance-containing bleach composition was discovered in which the fragrance is protected from the oxidative environment, but this composition contains the bleach and the fragrance, and the fragrance is encapsulated in the microbial cells. It is something that exists. The microbial cells are selected so that they remain intact in the oxidizing medium and release their contents when the product is used by the consumer. Therefore, for laundry bleaching detergents, microorganisms that are decomposed by the high temperature and mixing action during the washing process are selected. For abrasives, select microorganisms that can be decomposed by abrasive action. Preferably, the bacterial cells are yeast, especially Saccharomyces cerevisiae.
es cercvisiae) and Aspergillus niger (Aspergillus vs nig).
It belongs to filamentous fungi such as e+).

Flavors can be encapsulated in microbial cells by known methods, such as those described in US Pat. No. 4,001,480 and European Patent No. 242,135. The microbial cells treated in this way contain no more than 75% by weight of fragrance, and preferably do not contain more than 15% by weight of fragrance, calculated based on the total weight of the microbial cells containing the fragrance. must not. The amount of flavor-containing bacteria (flavor-containing capsules) to be added to each bleach product is determined depending on the flavor content in the bacteria and the amount of flavor to be added to the product. The fragrance content of bleach products is usually 0.01 for laundry detergents.
5% to 5% by weight, most commonly 0.1 to 1% by weight, and 0, OI to 1% by weight for powder and liquid bleaches.

The bleaching agents of the present invention typically contain oxidizing agents commonly used in cleaning products and detergents. Such oxidizing agents include: 1) Usually, powder and liquid bleach contain an effective chlorine concentration of 10
% or less active chlorine generating system, such as sodium or calcium hypochlorite, sodium or potassium dichloroisocyanurate, trichloroisocyanuric acid,
and chlorinated trisodium phosphate; 2) Hydrogen peroxide-generating systems typically used in laundry detergents at 50% (w/w) or less, such as sodium percarbonate, sodium perborate, and various hydrates thereof. Things (TAE
(with or without precursors such as D); 3) Filtrate acid systems, typically used in laundry detergents at less than 50% (W/W), such as peroxymonosulfuric acid, diperoxydodecanedioic acid, monoperphthalate; acid, diperisophthalic acid, salts thereof, and the like.

Flavored bleach compositions of the present invention include powdered and liquid laundry detergents, powdered and liquid bleaches, powdered and liquid kitchen detergents, abrasives, and the like. Traditionally, such products include some type of surfactant. Thus, laundry detergents can contain anionic, nonionic, amphoteric, cationic surfactants, or mixtures thereof, at concentrations of 5 to 50% (v/w). Liquid bleach contains 0.05 amine oxide, alkylphenoxybenzene disulfonate, and/or linear alkylbenzene sulfonate.
It may be contained at a concentration of 5% (V/V).

The powdered kitchen detergent may contain ethoxylated alcohol in a concentration of 0.1 to 5% (W/W).

Liquid kitchen detergents contain amine oxides, nonionic surfactants, alkyl ether sulfates, alkanesulfonates, and alkylbenzenesulfonates from 0.1 to 5.
It may be contained at a concentration of 0% (w#). Bleach-containing polishing agent contains 0.1% linear alkylbenzene sulfonate.
It may be contained at a concentration of 50% (W/W).

Bleach compositions can be manufactured by procedures commonly used in the art, and encapsulated fragrances may be added at any stage. If it is necessary to apply heat or vigorous agitation at some stage during the manufacture of the bleach composition, it is preferable to add the encapsulated fragrance after that stage.

The present invention will be explained using the following examples, but the present invention is not defined by these examples.

Example 1 (Production of fragrance-containing capsules) Dried baker's yeast (
10g, Gist Btoc
Fermipan (made by Ades),
Water (40 g) and perfume (10 g) were mixed in a flask and maintained at 40° C. for 4 hours while stirring at 25 G + pm using a magnetic stir bar. This mixture was heated to 200 rpm.
Centrifuged for 20 minutes. The bottom layer was decanted and washed with a little water on a Buchner funnel. Excess water was removed by suction, resulting in a thick slurry suitable for addition to an aqueous liquid bleach composition. This slurry was further suctioned (1 hour).
It can then be dried by drying in a vacuum desiccator. The fragrance content of the dried inner capsule (determined by gas chromatography (GC) analysis after methanol extraction of the sample) was approximately 46% by weight.

Instead of the above drying method, the cleaning slurry can be dried using a spray dryer (Lab-Plant 5D-03).
3), it was sent to a downstream spray nozzle (0.5 mm) and spray-dried at an inlet temperature of 175-180°C and an outlet temperature of 100-110°C. The perfume content (determined as above) of the dried capsules was approximately 42% by weight. The perfume-containing capsules produced in this manner were used to produce a solid perfume-containing bleach composition.

Example 2 A perfumed concentrated bleach was prepared according to the following recipe.

Weight% Sodium hypochlorite solution' 55.0
0 Empigen OB (Empigen 08) 25.
00 Potassium chromate 0.0
2 Elfan O346 (Elfan OS 46) 31
．． 0 Sodium hydroxide 0.7
Flavor-containing capsule slurry of Example 1 0.3 water

37.98 2 lauryl/myristyl-amine oxide containing 15% available chlorine and 0.6% sodium hydroxide, 30% active sodium 3α-olefin sulfonate surfactant,
38% active Erfan 0846 and half the amount of water above were mixed. Sodium hydroxide was dissolved in the remaining water, Empigen OB was added thereto, and then a sodium hypochlorite solution was added. Potassium chromate was then added with thorough stirring. Next, the above Erfan O346 solution was added while stirring, and then the fragrance-containing capsules were added.

Example 3 A bleach-containing abrasive was prepared by dry mixing the components according to the following recipe.

Sodium carbonate calcite trichlorocyanurate Dopanol 25-7 (Dobanol 25-7
) Perfume-containing capsule Example 4 of Example 1 A liquid kitchen detergent was manufactured according to the following formulation.

Weight% Termort SnW (Thc+mphos NW)
'30. [1 Sodium silicate solution 4g15
0°Be (average weight ratio 5i02:Na20-2.0~2
．． 1) 30.0 Sodium Carbonate
2.5 Sodium hypochlorite solution (available chlorine 15%) 6.6 Gel White H (Gc1while old 2
．． 0 Purified water 28.4 Aromox DMMCD-W (Aromox DMMCD-W)'
0.4 Flavor-containing capsule slurry of Example 1
0.21 Sodium tripolyphosphate 2ECC International, commercially available from Hoechsf A, G.
commercially available montmorillonite 3 from Akzo Ct+emie (St. Austill, Cornwall, UK).
Dimethyl cocoamine oxide (29% active) sodium carbonate, commercially available from ), was dissolved in water and sodium silicate solution and sodium hypochlorite solution were added.

Termofuos NW was then added with vigorous stirring. Next, Gel White (1) was added with stirring, and finally the mixture of Aromox and fragrance-containing capsules was added with gentle stirring.

Example 5 A powder detergent for laundry was manufactured by dry mixing each component according to the following recipe.

weight%

Claims (1)

[Scope of Claims] (1) A bleach composition containing a bleaching agent and a fragrance, characterized in that the fragrance is encapsulated in microbial cells. (2) The composition according to claim 1, wherein the microorganism is yeast. (3) The composition according to claim 2, wherein the yeast is Saccharomyces cerevisiae. (4) The composition according to claim 1, wherein the microorganism is a filamentous fungus. (5) The composition according to any one of claims 1 to 4, further comprising a surfactant. (6) The composition according to any one of claims 1 to 5, wherein the composition is a liquid. (7) The composition according to any one of claims 1 to 5, wherein the composition is a solid. (8) The composition according to any one of claims 1 to 7, wherein the bleaching agent is a compound that generates active chlorine. (9) The composition according to any one of claims 1 to 7, wherein the bleaching agent is a compound that generates hydrogen peroxide. (10) The composition according to any one of claims 1 to 7, wherein the bleaching agent is a peracid or a salt of a peracid.