JPH04333668A - Softening and finishing agent - Google Patents

Abstract

PURPOSE:To obtain a finishing agent, composed of an aqueous dispersion in which specific two components are blended at a specified weight ratio and capable of imparting excellent softness and resilience to cotton and various synthetic fibers. CONSTITUTION:A softening and finishing agent is obtained by blending (A) a compound obtained by neutralizing a product, expressed by formula I (R<1> and R<2> are 11-20C straight-chain or branched chain alkyl or alkenyl) and prepared by carrying out cyclocondensing reaction of hydroxyethylethylenediamine with a fatty acid, etc., with an inorganic or an organic acid with (B) a compound expressed by formula II [R<1> and R<2> are same as described above; (m) is 2 or 3; X is Cl, HOCH2CO or formula III] and/or formula TV (R<3> is methyl, ethyl or hydroxyethyl; Y us Cl, CH2SO4 or C2H5SO4) at (1/9)-(9/1) weight ratio (A/B), providing a softening agent and further blending dimethylpolysiloxane and/or dimethylpolysiloxane partially modified with amino group or a polyoxyalkylene group in an amount of 0.3-5wt.% based on the total amount of the components (A) and (B). This softening and finishing agent is capable of softening various fibers and also imparting fullness.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a fabric softener, and more specifically, the present invention relates to a fabric softener that has excellent flexibility and elasticity (
The present invention relates to a liquid fabric softener that can impart a fluffy feel.

0002

[Prior art and problems to be solved by the invention] Currently,
Most products on the market as household fabric softeners are 1
It is a composition whose main component is a quaternary ammonium salt having 1 to 2 long-chain alkyl groups in the molecule. The reason for this is that a small amount of quaternary ammonium salt has a good softening effect on various fibers.

The above-mentioned quaternary ammonium salts have a remarkable softening effect on cotton, but on acrylic and
It is difficult to say that the effect is sufficient for synthetic fibers such as polyester and polyamide, and if treated at a higher concentration, the elasticity of clothing may decrease and the feel may be impaired. Furthermore, when stored for a long period of time, it may thicken, become gel-like, or separate, especially at low temperatures.

[0004] For this reason, various polyoxyalkylene-based nonionic activators, electrolytes, and solvents are required in addition to the softening component, and although many products are stabilized by blending these, the effects are not yet sufficient.

[0005]

[Means for Solving the Problems] The present inventors have conducted intensive research to solve the above-mentioned drawbacks, and have arrived at the present invention.

[0006] That is, the present invention consists of an aqueous dispersion essentially comprising the following components (a) and (b),
The weight ratio of component (a) and component (b) is (a)/(
b) = 1/9 to 9/1. (a) Component: An inorganic or organic acid neutralized product of a compound represented by the following general formula (I).

[0007]

[C5]

[In the formula, R1 and R2 have 11 to 21 carbon atoms
means a saturated or unsaturated straight-chain or branched alkyl group or alkenyl group. ] (b) Ingredients: (b-1) and/or (b-2) below (
b-1); A compound represented by the following general formula (II). (b-2); A compound represented by the following general formula (III).

[0009]

[C6]

0010

[C7]

[In the formula, R1, R2: same as above R3: methyl group, ethyl group or hydroxyethyl group m:
2 or 3 X: Cl, HOCH2CO2 or

0012

[Chemical formula 8]

Y: Cl, CH3SO4 or C2H5SO
It means 4. ].

Component (a) of the present invention is obtained by a condensation ring-closing reaction between hydroxyethylethylenediamine and the corresponding fatty acid or their esters such as methyl ester.
I) can be obtained by neutralizing a compound of formula with an inorganic or organic acid. (I) When obtaining the compound of formula (I) or during storage as a softener, by-products such as partially ring-opened compounds are produced. There is no problem as long as the effect is not impaired.

Component b-1 of the present invention can be obtained as follows. Ethylene oxide or propylene oxide is added to an imidazoline compound obtained by a cyclization condensation reaction of diethylenetriamine and the corresponding fatty acid or fatty acid ester under acidic conditions. Also, b-2 of the present invention
The component is a quaternized product of component (a) of the present invention. However, in the present invention, the long chain alkyl groups of component (a) and component b-2 may be different.

Inorganic acids used to obtain component (a) include hydrochloric acid, sulfuric acid, boric acid, phosphoric acid, etc.
Organic acids include lactic acid, glycolic acid, maleic acid, succinic acid, fumaric acid, oxalic acid, malic acid, tartaric acid, citric acid, etc., but it is preferable to use hydrochloric acid because of its highest performance and cost. .

The blending ratio of component (a) and component (b) in the fabric softener of the present invention is (a)/(by weight).
b) = 1/9 to 9/1, preferably 2/8 to 8/2. (a) / (b) When the weight ratio is less than 1/9, the elasticity with respect to cotton decreases, and when it is 9/1 or more, the flexibility with respect to synthetic fibers decreases. The sum of component (a) and component (b) in the composition is 4 to 35% by weight, preferably 1
It is 0 to 25% by weight.

The softening agent of the present invention is further combined with a silicone compound such as dimethylpolysiloxane, dimethylpolysiloxane partially modified with amino groups or polyoxyalkylene groups, particularly preferably partially modified with polyoxyalkylene groups. By incorporating dimethylpolysiloxane, the feel of softened clothing can be improved without impairing water absorption performance. These silicone compounds are (a) component + (b) 0.3 to 5 with respect to the total amount of component
It is preferable that the amount is added by weight.

The softening agent of the present invention has almost the same softening effect as dihardened beef tallow alkyldimethylammonium chloride, which has been widely used in the past, but surprisingly provides elastic softness. I understand. Furthermore, the compounds according to the present invention have excellent biodegradability.

When the composition of the present invention is used as an aqueous liquid softener, an inorganic electrolyte such as sodium chloride, calcium chloride, magnesium chloride, etc. is added in an amount of 0.05 to 0.05 to
It is desirable to add 0.4% by weight.

The fabric softener of the present invention has high stability during long-term storage, but in order to stabilize it under even more severe storage conditions, polyoxyethylene (5 to 50 mol), alkyl or alkenyl (C12 to C24 ) A nonionic surfactant such as ether, a solvent such as propylene glycol or ethylene glycol, or urea can be blended. In addition, known esters, nonionic or cationic compounds, amine compounds, long chain alcohols, long chain fatty acids, etc., may be used in combination as flexible bases. Pigments or dyes may also be included for product appearance, fluorescent brighteners for finished whiteness, and fragrances for use and after finishing.

[0022]

Effects of the Invention The fabric softener of the present invention can impart sufficient flexibility, antistatic properties, and excellent elasticity to various fibers.

[0023]

EXAMPLES Next, the present invention will be explained in detail with reference to Examples, but the present invention is not limited to these Examples.

Components (a) and (b) used in Examples and Comparative Examples are shown in Tables 1 and 2.

[0025]

[Table 1]

[0026]

[Table 2]

Examples 1 to 8 The compositions having the formulations shown in Table 3 were evaluated for flexibility and elasticity by the following methods.

<Evaluation of flexibility and elasticity> (1) Processing method 2 kg of commercially available cotton towels and 1 kg of acrylic jersey were washed with commercially available detergent Attack (manufactured by Kao Corporation, registered trademark) in 3.5° DH hard water for 5 minutes. After washing the fibers several times (in a 30-liter washing machine) to remove the fiber treatment agent attached to each fiber, 1.5 g of the active ingredient of the blended composition in Table 4 was added, and the fibers were treated at 25°C for 1 minute with stirring. . In each case, 1% by weight of polyoxyethylene-modified dimethylpolysiloxane was blended with respect to the total amount (15% by weight) of components (a) and (b).

(2) Evaluation method The cloth treated by the above method was air-dried indoors at 25°C and 65%
It was left in a constant temperature and humidity room at RH for 24 hours. These fabrics were evaluated for flexibility and elasticity. The softness and elasticity were evaluated using a pair of fabrics treated with 10 cc of a fabric softener containing 15% by weight of dihydrogenated beef tallow alkyldimethylammonium chloride as a control. The evaluation is expressed as follows. +2; softer or more elastic than the control +1; slightly softer or more elastic than the control 0; same as the control -1; control is slightly softer or slightly less elastic than the control -2; control is soft or the control As shown in Table 3, which has lower elasticity, by using the compound of the present invention, an effect that satisfies both flexibility and elasticity can be obtained.

[0030]

[Table 3]

Examples 9 to 11, Comparative Examples 4 and 5 In order to evaluate the elasticity of the compositions shown in Table 4, the stacking heights of cotton towels were measured. <Evaluation of elasticity> Cotton towels treated in the same manner as in Examples 1 to 8 were folded into 8 and stacked in 3 layers, with a thickness of 5 g/cm.
After applying pressure for 5 minutes at a pressure of 2.2 mm, the pressure was removed and the height of the towel was measured. The higher the height of the towel, the better the elasticity.

[0032]

[Table 4]

Claims (3)

[Claims] [Claim 1] The following (a) component and (b)
Consisting of an aqueous dispersion containing essential components, the weight ratio of component (a) and component (b) is (a)/(b) = 1/9
A fabric softener with a rating of ~9/1. (a) Component: An inorganic or organic acid neutralized product of a compound represented by the following general formula (I). [In the formula, R1 and R2 mean a saturated or unsaturated straight-chain or branched alkyl group or alkenyl group having 11 to 21 carbon atoms. ] (b) Ingredients: (b-1) and/or (b-2) below (
b-1); A compound represented by the following general formula (II). (b-2); A compound represented by the following general formula (III). [Formula 2] [Formula 3] [In the formula, R1, R2: same as above R3: methyl group, ethyl group or hydroxyethyl group m:
2 or 3 X: Cl, HOCH2CO2 or Y: Cl, CH3SO4 or C2H5SO4. ] 2. The fabric softener according to claim 1, wherein component (a) is a hydrochloride of a compound represented by formula (I). 3. Further, dimethylpolysiloxane and/or
or dimethylpolysiloxane partially modified with amino groups or polyoxyalkylene groups (a) component and (
b) The softening agent according to claim 1 or 2, containing 0.3 to 5% by weight based on the total amount of the components.