JPH0450372A - Liquid softening finish - Google Patents

Abstract

PURPOSE:To provide the title finish for domestic use with good' dispersibility, capable of imparting various textiles with softness and elasticity, containing, as the essential components, an acid-neutralized product of ester group-contg. specific amine and/or such product of condensate from diamine and fatty acid and an acid-neutralized product of specific amine. CONSTITUTION:The objective finish with good dispersibility in water, not impairing the water-absorptivity of the textiles treated therewith, containing, as the essential components, (A) an acid-neutralized product of amine containing in the molecule 1-2 ester group(s) of formula I (Y is H or R<2>CO-; R is 2-24C hydrocarbon group; R<1> is 1-23C hydrocarbon group; m is 2 or 3) and/or such product of a condensate from diamine of formula II and fatty acid of formula III (R<2> is R<1>) and (B) an acid-neutralized product of amine of formula IV (R<3> and R<4> are each 10-24C alkyl, alkenyl, etc.), and also containing (C) 0.3-5wt.%, based on the total amount of the components A and B, of a dimethylpolysiloxane and/or dimethylpolysiloxane partially modified with e.g. amino group.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a fabric softener, and more specifically, a household liquid fabric softener that can impart excellent flexibility and elasticity (fluffiness) to various fibers. This relates to finishing agents.

[Problems to be solved by conventional techniques and inventions] 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 it is difficult to say that the effect is sufficient on synthetic fibers such as acrylic, polyester, and polyamide. When treated at high concentrations, the elasticity of clothing may decrease and the texture may be impaired.

The above-mentioned fabric softener having the quaternary ammonium salt as its main base is usually commercially available and used as a 4-20% dispersion.

Quaternary ammonium salts are highly hydrophobic, so if the stirring force is weak when adding them to the rinsing water, they will have poor dispersibility in water.
Therefore, there is a possibility that it may become uneven on clothing. Commercially available softeners contain various additives in addition to the above-mentioned quaternary ammonium salt to improve their dispersibility in water, but their effects are still insufficient.

Furthermore, liquid softeners using various amines as softening bases have been known. For example, JP-A-52-59796
JP-A-58-60070 discloses a composition that imparts flexibility to fibers containing a long-chain alkylamine such as methyldi(hardened tallow alkyl)amine, and JP-A-58-60070 describes an acylated alkanolamine, a water-soluble composition. JP-A-61167083 discloses a textile material finishing agent that gives smoothness and a comfortable feel to fibers containing quaternary ammonium salts and fatty acid esters.
JP-A No. 61-275474 discloses a softening agent with good dispersibility containing a quaternary ammonium compound, a condensation reaction product of a higher fatty acid and a hydroxy-lower alkyl polyamine, and an alkylamine polyglycol ether; A stable aqueous dispersion containing a (higher alkyl)cyclic amine and a Brønsted acid for treating textiles was disclosed in JP-A-64
85368 discloses a softening composition containing a di-long chain alkylamine anionic surfactant ion pair complex, a non-silicone wax and a liquid carrier, and JP-A-2-6662 discloses a hydroxy lower alkyl alkylene diamine. A fabric conditioning composition containing an amine and an amphoteric fabric conditioning agent, such as a condensate of and a higher fatty acid,
JP-A-2-14076 describes a fabric conditioning composition that imparts flexibility and antistatic properties and contains a di-long-chain alkylamine-polyfunctional carboxylic acid complex.

Further, JP-A-52-5394 describes a fabric conditioning composition containing a mono- or di-long chain alkyl alkylene diamine static electricity suppressant and a quaternary ammonium softener.

However, the effects of softeners containing these amines are still insufficient.

[Means for Solving the Problems]] As a result of intensive research to solve the above drawbacks, the present inventors have found that
This led to the present invention.

That is, the present invention provides a liquid softening agent characterized by containing the following components (a) and (b) as essential components as a softening base.

(a) A neutralized product of an inorganic or organic acid of an amine containing 1 to 2 ester groups represented by the general formula (I) in the molecule and/or a diamine represented by the maximum (Ia) ( I
A neutralized product of an inorganic acid or organic acid of a condensate of fatty acids represented by b).

R'CH2NHCJJHz (Ia) 2C-OH (Ib) [In the formula, Y is H or R2C-, pl, R2 is a straight chain or branched saturated or unsaturated hydrocarbon group having 11 to 23 carbon atoms, R represents a linear or branched saturated or unsaturated hydrocarbon group having 2 to 24 carbon atoms, and m represents 2 or 3. (b) - Neutralized product of an amine of up to (U) with an inorganic or organic acid.

C,84NHCOR' [wherein p3. R4 each represents an alkyl group, an alkenyl group, or a β-hydroxyalkyl group having 10 to 24 carbon atoms. ] Typical examples of the compound represented by the general formula (1) which is the component (a) used in the present invention include an alkylene oxide adduct of a primary amine having 2 to 24 carbon atoms and an alkylene oxide adduct having 12 to 24 carbon atoms.
The ester amine obtained by reaction with a fatty acid or fatty acid methyl ester can be treated with an inorganic acid such as hydrochloric acid or sulfuric acid, acetic acid, glycolic acid, lactic acid, citric acid, maleic acid, fumaric acid,
Examples include compounds obtained by neutralization with organic acids such as toluenesulfonic acid. The fatty acids used in this reaction are generally derived from natural oils such as coconut oil, palm oil, beef tallow, rapeseed oil, and fish oil, but chemically synthesized fatty acids may also be used.

As the acid component used in the neutralization of the amine of general formula (II) as the component (b) used in the present invention, the same acid as the acid used in the neutralization of the component (a) can be used. The ratio of component (a) to component (b) is (a)/(b) weight ratio of 95/5 to 20/
80, preferably from 9515 to 50150, particularly preferably from 90/10 to 60/40.

The softening agent of the present invention further includes dimethylpolysiloxane,
By incorporating a silicone compound such as dimethylpolysiloxane partially modified with an amino group or a polyoxyalkylene group, particularly preferably a dimethylpolysiloxane partially modified with a polyoxyalkylene group, it is possible to absorb water without impairing water absorption performance. , the feel of softened clothing can be improved. These silicone compounds are preferably blended in an amount of 0.3 to 5% by weight based on the total amount of components (a) and (b).

It has been found that the softening agent of the present invention has almost the same softening effect as dihardened tallow alkyldimethylammonium chloride, which has been widely used in the past, but surprisingly provides elastic softness. .

In order to use the composition of the present invention as an aqueous liquid fabric softener, the sum of the weights of components (a) and (b) in the composition is preferably 10 to 30% by weight. When making an aqueous liquid fabric softener, add 0.05% of an inorganic electrolyte such as sodium chloride, calcium chloride, magnesium chloride, etc. to adjust the viscosity.
It is desirable to add up to 0.4% by weight.

Furthermore, the liquid fabric softener of the present invention may contain nonionic surfactants such as polyoxyethylene (5 to 50 moles) alkyl or alkenyl (C+z~24) ether, ethanol, propylene glycol, and ethylene to improve storage stability. A solvent such as glycol or urea may be added.

In addition, pigments or dyes can be added to improve the appearance of the product, fluorescent brighteners can be added to improve the whiteness of the finished product, and fragrances can be added to improve the taste during use and after finishing.

〔Effect of the invention〕

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

〔Example〕

Next, the present invention will be explained in detail with reference to examples, but the present invention is not limited to these examples.The method for producing component (a) used in the present invention will be illustrated by means of synthesis examples.

Synthesis Example 133 g of ethyl jetanolamine was added to 596 g of methyl stearate and reacted at 140 to 170°C for 6 hours to obtain an ester amine.

This condensate was added to 500 g of a 12% acetic acid aqueous solution to obtain the compound (a-1) of the present invention.

Similarly, compounds (a-2) of the present invention as shown in Table 1
(a-4) was synthesized.

Table 2 Composition of (a) Component Table 2 (B) Composition of Component Examples 1 to 6, Comparative Example 1 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 chassis were repeatedly treated with commercially available detergent Attack (manufactured by Kao Corporation, registered trademark) 5 times in 3.5° DH hard water. After washing (30Il washing machine) and removing the fiber treatment agent attached to each fiber,
1.5g of the blended composition in Table 3 was added as an active ingredient,
The mixture was treated at 25° C. for 11 minutes under stirring.

In each case, 1% by weight of polyoxyethylene-modified dimethylpolysiloxane was blended based on the total amount of components (a) and (+).

(2) Evaluation method After drying the cloth treated with the above method indoors at 25°C165
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 elastic than the control As shown in Table 3, the use of the compound of the present invention provides an effect that satisfies both flexibility and elasticity.

table flexibility, Elasticity did.

<Evaluation of elasticity> Cotton towels treated in the same manner as in Examples 1 to 6 were folded into eight and stacked in three layers, and after pressurizing at a pressure of 5 g/ctM for 5 minutes, the pressure was removed and the height of the towel was adjusted. was measured. The higher the height of the towel, the better the elasticity.

Table 4 Evaluation of elasticity (towel stacking height) Note) (
The sum of component a) and component (b) was both 15% by weight in the composition. In addition, dihydrogenated beef tallow alkyldimethylammonium chloride was used as component (b)* of Comparative Example 1.

Examples 7 and 8, Comparative Example 2

Claims (1)

[Scope of Claims] 1. A liquid fabric softener characterized by containing the following components (a) and (b) as essential ingredients as a softening base. (a) A neutralized product of an inorganic acid or an organic acid of an amine containing one or two ester groups represented by the general formula (I) in the molecule and/or a diamine represented by the general formula (Ia). A neutralized product of an inorganic acid or organic acid of a condensate of fatty acids represented by (Ib). ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) R^1CH_2NHC_3H_6NH_2(I a)▲
There are mathematical formulas, chemical formulas, tables, etc.▼(I b) [In the formula, Y is H or ▲There are mathematical formulas, chemical formulas, tables, etc.▼
, R^1 and R^2 are linear or branched saturated or unsaturated hydrocarbon groups having 11 to 23 carbon atoms, and R is a carbon number of 2 to 24
straight-chain or branched saturated or unsaturated hydrocarbon group, m represents 2 or 3; ] (b) A neutralized product of an amine represented by general formula (II) with an inorganic or organic acid. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (II) [In the formula, R^3 and R^4 each represent an alkyl group, an alkenyl group, or a β-hydroxyalkyl group having 10 to 24 carbon atoms. ] 2 Furthermore, it contains 0.3 to 5% by weight of dimethylpolysiloxane and/or dimethylpolysiloxane partially modified with an amino group or a polyoxyalkylene group based on the total amount of components (a) and (b). 2. The liquid fabric softener according to claim 1. 3. A liquid fabric softener according to claim 2, wherein the modified dimethylpolysiloxane is a dimethylpolysiloxane partially modified with polyoxyalkylene groups.