JPH01190796A - Powdery detergent composition - Google Patents

Abstract

PURPOSE:To obtain the title compsn. capable of masking odor released from washing despite repeated washing cycles, by adding a granulated perfume obtd. by granulating a powdered perfume by means of an inclusion compd. and polyethylene glycol in combination to a powdery detergent. CONSTITUTION:A powdery detergent compsn. is obtd. by adding 0.1-5 pts.wt. granular product which is a perfume inclusion powder obtd. by granulating a powdered perfume by means of an inclusion compd. and 0.5-5 pts.wt. polyethylene glycol in combination to a powdery detergent comprising 10-60 pts.wt. anionic surfactant and 30-80 pts.wt. detergent builder. This compsn. is capable of satisfactorily masking odor released from washing despite repeated washing cycles. The nate of the compsn. does not change over a prolonged period of time despite a contact with an alkali component of a detergent. Further, a perfume having high volatility can be used, and it is possible to give a novel nate at the time of washing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a powder detergent composition, and more particularly to a powder detergent composition that can sufficiently mask odors emitted from laundry even during repeated washing.

[Prior Art and Problems to be Solved by the Invention] Generally, perfumes are in liquid form (of course, there are also solid perfumes such as camphor) and are used for various purposes. One use is as an ingredient in powdered laundry detergents.
It is used for purposes such as masking raw material odors and providing comfort to users during use. Liquid perfumes can be easily added to liquid detergents, but no special efforts have been made for powder detergent systems. In general,
A liquid fragrance is sprayed onto a powder system or mixed with some components of a cleaning agent in advance to form a powder and solidify it, which is then added as a so-called master powder.

Generally, when washing clothes at home, it is common to wash clothes two to three times using one washing liquid. When a powder laundry detergent containing a fragrance is used for washing, the fragrance component evaporates as soon as the detergent is added, and the odor becomes weak and the masking effect disappears within 2 to 3 minutes. Even a simple method of adding fragrance can give a relatively pleasant fragrance during the first wash.
Alternatively, it may be relatively easy to mask since the first time you wash clothes that are less dirty, but the second or third time you wash clothes that are particularly dirty, The odors emitted from laundry also become stronger, and cannot be masked sufficiently with the usual methods of adding fragrances.

West German Patent No. 3,020,269 discloses that the storage stability of fragrances is improved by incorporating fragrances into anionic detergents as inclusion powders with cyclodextrin, and the anionic surfactants in the detergents also improve the use of laundry detergents. It is stated that the fragrance is immediately and quantitatively released at the moment of . The fragrance in the clathrate is generally difficult to volatilize, but when incorporated into an anionic detergent like this, it volatilizes immediately, making it impossible to obtain a sufficient odor-sustaining effect.

[Means to solve the problem]

As a result of intensive studies to solve these problems, the inventors of the present invention have developed powdered detergents by powdering fragrances with clathrate compounds and using a combination of granulated fragrances obtained by granulating the powdered fragrances and polyethylene glycol. It was discovered that the problem could be solved by adding

That is, the present invention contains 10 to 60% by weight of anionic surfactant,
Granules of fragrance inclusion powder obtained by including fragrance in detergent Bilgoo 30 to 80% by weight, polyethylene glycol 0.5 to 5% by weight, and a compound having inclusion ability 0.1 to 5
% by weight.

As the clathrate compound used in the present invention, β-cyclodextrin is best, but β-cyclodextrin derivatives such as methylated β-cyclodextrin, α-cyclodextrin, T-cyclodextrin, etc. can also be used.

The method of powdering the fragrance with the clathrate compound can be the method used for boat fishing.

Normally, it can be obtained by gradually adding a fragrance to a slurry or aqueous solution of the clathrate while stirring, and then filtering and drying the fragrance clathrate. The fragrance and the clathrate compound are used in a molar ratio of 0.8 to 1.2.

Granulation of the powdered fragrance is carried out in a dry or wet manner using a binder. Here, the dry method or wet method refers to whether water is used as a binder or not, and an organic compound having a melting point or softening point of 40° C. to 160° C. is used as the binder. Examples of organic compounds having a melting point or softening point of 40°C to 160°C include polyethylene glycol with a molecular weight of 1,500 to 20,000, polyethylene glycol alkyl ether having an alkyl group with a carbon number of CB-02□, and a carbon number of 0.
Polyethylene glycol alkylphenol ether having an alkyl group of 8 to C2□, carbon number 01□ to C37
Examples include fatty acids having an alkyl group, block polymers of ethylene oxide and propylene oxide, and the like.

The powdered fragrance is granulated by an extrusion granulation method, a transfer granulation method, etc. with the addition of a binder and, if necessary, a filler such as Glauber's salt, a powder property improver such as silica, and other additives.

During granulation, the following amounts are used: 20 to 80 parts by weight (hereinafter abbreviated as "parts") of the fragrance inclusion powder, 5 to 35 parts of the binder, 15 to 50 parts of the filler, and 0 to 5 parts of the powder property improver. It is better.

The granules have an average particle diameter of 100 to 1500μ, preferably 200 to 1300μ, more preferably 300 to 1000μ.
It is preferable to granulate it in μ. It is desirable that the amount of particles less than 100μ and more than 1500μ is 5% by weight or less. The granulated material is blended in the composition in an amount of 0.1 to 5% by weight.

The fragrance used in the present invention is not particularly limited. However, low-volatility fragrances are conventionally added to powdered detergents by spraying or as a master powder that is pre-mixed with some of the detergent ingredients, and the vapor pressure is 0.05 mmH.
Inclusion of highly volatile fragrances (at 25°C or higher) reduces the change in fragrance during repeated washing, provides sustainability, and is economical because the amount of clathrate compounds required can be reduced. It is also advantageous.

Flavors with a vapor pressure of 0.05 mm/g (25°C) or higher include isoamyl acetate (5,6), α-pinene (4,
4), β-pinene (4,4), myrcene (1,65)
, terpinolene (1,8), limonene (1,4)
, benzaldehyde (1,1), methylhexyl ketone (0,82), citronellal (0,23), linalool (0,165), benzyl acetate (0,12), linalyl acetate (0,101), anethole (0 ,058
), citral (0,058), p-menthol (0,054), geranyl formate (0,050), etc. [The number in parentheses indicates the vapor pressure at 25°C.

Unit: mmHg). When these fragrances are blended into detergents using conventional methods, there is a problem in that they rapidly volatilize during manufacturing and product storage, resulting in a change in fragrance when used by consumers.

In the present invention, these fragrances can be easily used, which increases the degree of freedom in adjusting fragrances, making it possible to impart an unprecedented fragrance tone during washing. Furthermore, in the present invention, since the fragrance inclusion body powder is granulated and used, storage stability is also improved.

The detergent composition of the present invention requires that 0.5 to 5% by weight of polyethylene glycol be further blended together with the granulated perfume inclusion body powder. Polyethylene glycol has a molecular weight of 600
0 to 20,000 is preferably used.

Polyethylene glycol is a substance that can also be used as a binder in the granulated product of fragrance inclusion body powder, but in the present invention, it is necessary to further incorporate polyethylene glycol separately from this.

Unless polyethylene glycol is further blended, the odor emitted from laundry during repeated washing, which is the object of the present invention, cannot be sufficiently masked.

In addition to the above two components, the detergent composition of the present invention contains anionic interfaces such as linear alkylbenzene sulfonates, alkyl sulfates, polyoxyethylene alkyl ether sulfates, α-olefin sulfonates, and higher fatty acid salts. 10 to 60% by weight of activator and 30 to 80% by weight of detergent builders such as carbonates, silicates, sulfates, phosphates, zeolites, etc. are blended. In addition, nonionic surfactants such as polyoxyethylene alkyl ether, cationic surfactants,
Bleaching agents such as amphoteric surfactants, percarbonates, perborates, etc. 0~
30% by weight, and other components such as anti-redeposition agents such as carboxymethyl cellulose, enzymes such as protease and cellulase, optical brighteners, and fragrances may be blended in a total amount of about 2 to 6% by weight.

〔Effect of the invention〕

The powder detergent composition of the present invention can sufficiently mask odors emitted from laundry even during repeated washing. In addition, the fragrance tone does not change for a long time even if it comes into contact with alkaline components in detergents. Furthermore, since a highly volatile fragrance can be used, the degree of freedom in adjusting the fragrance has increased, and it has become possible to impart an unprecedented fragrance tone during washing.

〔Example〕

The present invention will be described below with reference to Examples, but the present invention is not limited to these Examples.

Note that parts and percentages in the examples are based on weight.

Example 1 A spray-dried detergent composition having the following composition was prepared, and a blended fragrance having the following fragrance composition was added thereto by the following method to obtain a powder detergent, which was evaluated for odor persistence and fragrance stability. Gender was evaluated.

<Powder detergent composition> Softanol 120 3.0% beef tallow fatty acid) IJum soap 2.8% sodium carbonate
10.0% No. 2 sodium silicate
9.5% 4A type zeolite 2365%
Sodium sulfate Balanced polyethylene glycol 6000 Table 1 Carboxymethyl cellulose 1.5% Tinovar CBS (fluorescent dye)
0.35% water 4.5% Total 100% <Fragrance composition> Vapor pressure (at, 25°C) α-pinene 6% 4.4 mmHg limonene
45% 1, 4mmHg linalool 7
% 0.165mmHg Benzyl acetate 4% 0
．． 120mmHg Linalyl acetate 3% 0.101
mmHg Citral 10% 0.058n+n
+Hg (*) α-methyl 3275% 0.007mm
Hg (book) Cedrol 5% 0.004mmH
g total 100% Fragrance tone: Citrus-floral tone <Perfuming method> 0.2 part of the blended fragrance (A) was sprayed onto 100 parts of the powdered detergent.

(B) The fragrance components marked with an asterisk (*) in the above prepared fragrance were sprayed, and the other fragrance components were mixed as fragrance inclusion powder in the following manner (fragrance content in detergent: 0.2 parts) (C) The fragrance ingredients marked with an asterisk (*) in the above-mentioned blended fragrance were sprayed, and the other fragrance ingredients were mixed as fragrance inclusion powder granules using the following method (the fragrance content in the detergent was 0.2 parts). According to each detergent (A), (B), (
C) was obtained.

Preparation of fragrance inclusion body powder and its granules Add 18.0 g of Celdesox N (β-cyclodextrin) manufactured by Nippon Shokuhin Kako Co., Ltd. into 200 g of warm water at 60°C.
g to completely dissolve the β-cyclodextrin. 2.5 g of mixed fragrance was added to this and stirred for 3 hours. After addition of the blended fragrance, a water-insoluble precipitate was formed, and an inclusion phenomenon was observed. After filtration, 20 g of fragrance inclusion complex powder was obtained by freeze-drying. After mixing the inclusion body powders in the following composition, a granulated product was obtained using an extrusion granulator manufactured by Fuji Baudal Co., Ltd. (model EXKS-1). This was classified using a 16.32 mesh sieve to obtain a granulated product.

Fragrance inclusion powder 50% PEG-600025% Neutral anhydrous sodium sulfate 25% Particle size distribution of granules Average particle size 6708m 500μ or more 1% 100μ or less 4% <Evaluation of odor persistence> Detergent (^), (B) , (c) was used to measure the odor of the washing liquid for the first, second, and third washes under the following washing conditions using Panel-4.
Evaluations were made by people (male 25 years old, male 36 years old, female 36 years old, female 18 years old), and the average score was calculated.

Washing machine Toshiba Galaxy 2.2kg water volume 307! Amount of detergent: 40g, 1kg of clothing (600g of cotton shirt, 400g of T/C dress shirt,
Worn for 3 days) Washing time: 7 minutes (take out and put in a new one each time).

) The higher the score, the stronger the odor during washing.

Table ~ 1 <Evaluation of fragrance stability> 50g each of detergents (A), (B), and (C) at 1oO
Place in a 4J-7 plastic bottle and seal tightly, -5℃, 30'C.
, 40'C for 20 days, and the stability of the fragrance was determined by sensory evaluation. There were 4 scent panelists (Male 25 years old, Male 36 years old)
I went there as a 36-year-old female and an 18-year-old female.

The content of polyethylene glycol in the spray-dried detergent was 2%.

Judgment criteria No change in O ○〜△ Slight change △　　　obvious change Table-2

Claims (1)

[Claims] 1 Anionic surfactant 10-60% by weight, detergent builder 30-80% by weight, polyethylene glycol 0.5-60% by weight
5% by weight and 0.1 to 5% by weight of granules of fragrance inclusion powder obtained by including a fragrance in a compound having inclusion ability. 2. The powder cleaning composition according to claim 1, wherein the clathrated fragrance has a vapor pressure of 0.05 mmHg (25° C.) or more.