JP2801057B2 - Bleach composition - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bleaching composition having excellent bleaching power.

[Problems to be solved by conventional technology and invention]

Chlorine bleach has limited fiber that can be used, color,
Oxygen bleaching agents which do not have these drawbacks have recently begun to be widely used because they cannot be used for patterned materials and have unique smells.

As the oxygen bleaching agent, sodium percarbonate and sodium perborate are particularly used from the viewpoint of bleaching performance and stability.

Oxygen bleaching agents have weaker bleaching power than chlorine bleaching agents, and various bleaching activators are used in combination.

The bleach activator includes nitriles such as acetonitrile, O-acetylated compounds such as glucose pentaacetate (GPAC), N-acylated compounds such as tetraacetylethylenediamine (TAED), and maleic anhydride. Acid anhydrides and the like represented by acids and the like,
Even when these activators were used in combination, the bleaching power was still insufficient.

As a result of the study of the present inventors, JP-A-63-233969,
JP-A-63-315666, JP-A-64-68347, JP-A-1-190654 and the like react with hydrogen peroxide to form an organic peracid having a quaternary ammonium group. It has been found that the resulting compound is extremely good as a bleach activator.

An object of the present invention is to stably bring out the bleaching performance of a bleaching agent using this bleaching activator (obtain a stable high bleaching power) and to solve storage problems such as caking.

[Means for solving the problem]

The present inventors have conducted intensive studies to achieve the above object, and as a result, have found that a bleaching agent containing a small amount of a nonionic surfactant and silicic acid (salt) is optimal, and have completed the present invention.

That is, the present invention provides: (a) a peroxide 30 to release hydrogen peroxide in an aqueous solution;
85% by weight (b) Bleaching activator which reacts with hydrogen peroxide to produce an organic peracid having a quaternary ammonium group 0.5 to 50% by weight (c) Nonionic surfactant 0.5 to 5% by weight (d) It is intended to provide a bleaching composition for fibers comprising 0.1 to 8% by weight of silicic acid or silicate (e) 5 to 60% by weight of carbonic acid (hydrogen) salt.

The peroxide releasing hydrogen peroxide in the aqueous solution which is the component (a) of the present invention includes sodium carbonate / hydrogen peroxide adduct, sodium tripolyphosphate / hydrogen peroxide adduct, sodium pyrophosphate / hydrogen peroxide Additives, urea
Hydrogen peroxide adducts, 4Na ₂ SO ₄ .2H ₂ O ₂ .NaCl, sodium perborate monohydrate, sodium perborate tetrahydrate, sodium peroxide, calcium peroxide and the like can be mentioned. Among these, sodium carbonate / hydrogen peroxide adduct is particularly preferred. The component (a) is blended in the composition in an amount of 30 to 85% by weight, preferably 40 to 80% by weight.

Reacts with the hydrogen peroxide used in the present invention, Examples of the bleach activator (b) that produces an organic peracid having the following structure include those having the following structure.

In the formula, R ₁ is a C _1-18 , especially a C _1-14 linear or branched alkyl group, A is —O—, And B is CH _{2 m} , OCH ₂ CH _{2 n} or (M is preferably 1 to 12, particularly preferably 1 to 5, and n is preferably 1 to 10, particularly preferably 1 to 5.) a and b are a = 0 and b = 0, or a = 1 and b = 1. R ₂ and R ₃ are C _1-2 alkyl groups.

Although the linking group is not particularly limited, for example, an alkylene group, a cycloalkylene group, a phenylene group or an alkylenephenylene group, an oxyalkylene group (—CH ₂ CH ₂ O
-).

The leaving group is not particularly limited, for example, (R ₅ and R ₈ are alkyl groups, R ₆ and R ₇ are H or alkyl groups, R ₉ is an alkylene group, an alkenyl group, Y is H or Represents M represents H or an alkali metal).

In the general formula (I), X ^- is an inorganic or organic counter ion, and the leaving group is The X when the ^- does not exist.

In the above general formula (I), the linking group is-(CH ₂ )
_{1 to 12-} , particularly-(CH ₂ ) _{1 to 5-} , wherein the leaving group is (a), (b), (c), (d), (f), (g),
(W), (F), (Y), (T), and (R), wherein R ₅ is a C _1-2 alkyl group, and R ₆ and R ₇ are H or C
_A compound in which _1-2 alkyl groups, R ₈ is a C _1-2 alkyl group, and R ₉ is a C _1-3 alkylene group,
Compounds represented by the structural formulas (Y) and (T) are particularly desirable.

Further, a nitrile compound represented by the following general formula (II) is also useful.

(In the formula, R is an alkyl group having 1 to 3 carbon atoms, X ^- is an organic or inorganic anion, and n is an integer of 1 to 16.) Among these bleach activators, the following are particularly desirable. Are represented by the following equations.

[Wherein, R ₁ and m are the same as above, l is an integer of 1 to 10, and the leaving group is a group represented by the above (Y) or (T)]. In the present invention, the peroxide (a) and the bleach activator (b) are in a weight ratio of (a) / (b) of from 100/1 to 1/20, preferably from 50/1 to 1/5. Used in.

The composition of the present invention contains a nonionic surfactant (c) in an amount of 0.5 to 5% by weight, preferably 1 to 4% by weight, in order to penetrate or disperse the soil into the soil and to improve and stabilize the bleaching effect. . Examples of the nonionic surfactant include polyoxyalkylene alkyl (or alkenyl) ether, polyoxyethylene alkyl phenyl ether, higher fatty acid alkanolamide or an alkylene oxide adduct thereof, sucrose fatty acid ester, alkyl glycoside, fatty acid glycerin monoester, and alkylamine. Oxide and the like. Among them, particularly preferred are polyoxyethylene (addition mole number 1 to 30) alkyl (C10 to ₂₀ ) ether and polyoxyethylene (addition mole number 1 to 25) alkali ( _{C9 to 20} ) phenyl ether.

The silicic acid or silicate used as the component (d) used in the present invention has a general formula of mM _p O · n SiO ₂ (where M is H, an alkali metal or an alkaline earth metal, p is 1 or 2, n / m = 0.01 to 10
It is. ), Typical examples are meta-silicic acid,
No. 1 to 3 sodium silicate, water glass and the like. (D)
The components are incorporated in the composition in an amount of 0.1 to 8% by weight, preferably 1 to 4% by weight. If the amount of component (d) is less than 0.1% by weight, there is no effect, and if it exceeds 8% by weight, there is a problem of deposition on clothing.

The main balance of the composition of the present invention is 5 to 60% by weight of a carbonate (hydrogen) salt (e) such as sodium carbonate, potassium carbonate, sodium bicarbonate and sodium sesquicarbonate.

By adding 0.5 to 10% by weight, preferably 1 to 5% by weight of polyethylene glycol having a molecular weight of 4,000 to 20,000 to the composition of the present invention, the anti-caking property is further enhanced, and the (co) weight of a certain unsaturated carboxylic acid is increased. The combined water-soluble salt
By blending 0.05 to 5% by weight and / or 0.5 to 3% by weight of the enzyme, the bleaching effect against various stains can be further enhanced. Such (co) polymers include acrylic acid, methacrylic acid, α-hydroxyacrylic acid,
(Anhydride) The molecular weight obtained by (co) polymerizing an unsaturated carboxylic acid selected from maleic acid, fumaric acid, etc. is 4000 to
150,000 (co) polymers, of which polyacrylic acid, polyα-hydroxyacrylic acid, and acrylic acid-maleic acid copolymer are preferred. Examples of the oxygen include protease, lipase, amylase, cellulase and the like.

In the composition of the present invention, if necessary, an anti-fading agent,
Fluorescent dyes, fragrances, etc. are added.

〔Example〕

Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples.

Various bleaching compositions shown in Table 1 were prepared and subjected to a bleaching test by the following method.

Bleaching test Preparation of black tea-contaminated cloth; 80 g of Nitto black tea (yellow package) is boiled for about 15 minutes in 3 ion-exchanged water, and then rubbed with desalted cotton.
Dip a cotton cloth # 2003 in this solution and boil for about 15 minutes.
It was lowered from the heat as it was, left to stand for about 2 hours, allowed to dry naturally, washed with water until the washing solution was no longer colored, dehydrated, pressed, made into a 10 cm × 10 cm test piece, and subjected to an experiment.

Measurement of bleaching rate; The bleaching composition shown in Table 1 was added to 300 ml of tap water at 40 ° C so that the available oxygen became 0.02%.

The black tea-stained cloth prepared as described above was immersed in the solution for 30 minutes, bleached, washed with water and dried, and the bleaching ratio was determined by the following formula.

The reflectance was measured using NDR-101DP manufactured by Nippon Denshoku Industries Co., Ltd. using a 460 nm filter.

 Table 1 shows the results.

In addition, each composition was put in a plastic bottle, left in an outdoor warehouse, and the caking state was observed.

As a result, No. 1 and 2 were stored one month after storage, and No. 3 and 4 were stored 6 months.
A few months later there was light caking. No. 5 to 8 are storage 12
She had not been caking after months.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ identification code FI C11D 7:14 7:26 7:32) (58) Field surveyed (Int.Cl. ⁶ , DB name) C11D ^7/ 12- 7/60 C11D 3/08-3/10 C11D 3/39-3/395 WPI / L (QUESTEL)

Claims (3)

(57) [Claims] 1. A bleaching activity for producing an organic peracid having a quaternary ammonium group by reacting with hydrogen peroxide (a) 30 to 85% by weight of a peroxide releasing hydrogen peroxide in an aqueous solution. (C) Nonionic surfactant 0.5 to 5% by weight (d) Silicic acid or silicate 0.1 to 8% by weight (e) Carbon fiber (hydrogen) salt 5 to 60% by weight Bleaching composition. 2. A bleaching composition according to claim 1, further comprising 0.5 to 10% by weight of polyethylene glycol. 3. A water-soluble salt of a (co) polymer of an unsaturated carboxylic acid selected from acrylic acid, methacrylic acid, α-hydroxyacrylic acid, (anhydride) maleic acid and fumaric acid.
The bleaching composition according to claim 1 or 2, further comprising 05 to 5% by weight.