JPH02300382A - Softening finish for clothing - Google Patents

Abstract

PURPOSE:To obtain concentrated-type softening finish having excellent transparent feeling and stability for long period of time containing water-insoluble cationic softening base material, specific adduct and multi-chain type polyether compound or derivative of said compound, etc., as essential ingredients. CONSTITUTION:(a) 12-25wt.% water-insoluble cationic softening base material (preferable example: stearyl lauryl dimethylammonium) is mixed with (b) 1-10wt.% adduct of 1-9mol alkylene oxide of 8-28C unsaturated or branched alcohol or 8-28C unsaturated or branched fatty acid and (c) 1-5wt.% multi-chain type polyether compound having >=55wt.% oxyethylene group and from 5000 to 20X10<4> molecular weight as alkylene oxide adduct containing ethylene oxide of a compound having >=3 active hydrogens as essential ingredient or derivative of said polyether compound (e.g. esterified substance of fatty acid) as essential ingredients to afford a transparent softening finish for clothing having >=80% transmittance to a light of 667nm wavelength. Said finish has excellent flexibility, antistatic properties and stability.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a fabric softener, and more specifically, a fabric softener that imparts excellent flexibility and antistatic properties to various fibers and has a highly transparent appearance over time. This invention relates to a concentrated clothing fabric softener that causes less viscosity increase.

[Prior art and problems to be solved by the invention] During repeated wearing and washing of clothing, fiber treatment agents are washed off, or the fibers themselves deteriorate and become hard, resulting in an undesirable texture. . Therefore, in recent years,
Fabric softeners, which can impart flexibility and antistatic properties to fibers, are widely used in households.

Currently, the commercially available household fabric softeners are:
Most of them are based on cationic surfactants having one or two long-chain alkyl groups in the molecule, especially di(hardened tallow alkyl) dimethylammonium salts.

These soft bases containing quaternary ammonium salts as main components are sparingly soluble in water, and are usually produced in the form of 3 to 20% by weight aqueous dispersions or emulsions. At that time, since the flexible base is poorly soluble in water, it is generally dispersed in water as particles having a particle diameter of about 0.1 to 10-100 ml, giving a cloudy appearance. For this reason, when the softener is poured from the bottle into the measuring cap or automatic loading slot of a washing machine, the deposits of the softener create an unsightly appearance. This is particularly noticeable when a high concentration of the flexible base is blended. There is also the problem that when a softener is added to the rinse water, the rinse water becomes cloudy.

Conventionally, methods for increasing transparency in appearance include applying a large shearing force during dispersion to minimize the particle size, and using a water-soluble flexible base.

However, the former does not provide a form that satisfies the transparency, and the latter does not provide sufficient flexibility.

[Means to solve the problem]

Under these circumstances, the present inventors have conducted extensive research to solve the above problems, and have found that when blending a highly concentrated softening base with a specific composition, it is possible to achieve transparency and stability over time. Based on this knowledge, we have completed the present invention regarding a concentrated clothing fabric softener.

That is, the present invention provides: (a) a cationic flexible base 12 that is substantially insoluble in water;
~25% by weight et al.) unsaturated or branched alcohol having 8 to 28 carbon atoms,
or an alkylene oxide adduct of 1 to 9 moles of unsaturated or branched fatty acid having 8 to 28 carbon atoms;
1 to 10% by weight and (c) an alkylene oxide adduct of a compound having 3 or more active hydrogens, which essentially contains ethylene oxide, has an oxyethylene group of 55% by weight or more, and has an average molecular weight of s, ooo to 2. .000. OOO.

long-chain polyether compound or derivative thereof
The purpose of the present invention is to provide a substantially transparent fabric softener containing 1 to 5% by weight as an essential component and having a transmittance of 80% or more for light at a wavelength of 667μ.

In the present invention, (a
) Components include, for example, the following, and two or more of these may be used in combination.

R,,: Cs~C! ! Saturated or unsaturated linear or branched alkyl group or hydroxyalkyl group Rt-: Cs to Cza saturated or unsaturated linear or branched alkyl group or hydroxyalkyl group R2a + R4a+ R4a' c, -(:a of Alkyl group or hydroxyalkyl group or (cHz Ctl O), lH Y.

However, n=1 to 10. Y, = hydrogen or CH3R%a
: cti~C3& saturated or unsaturated branched alkyl group or hydroxyalkyl group R? a+Rsa: C? ~C□ saturated or unsaturated linear or branched alkyl group or hydroxyalkyl group A, B:, C, ~C8 alkylene group Xs: CHsSOa, CtHsSO4, C-Hz
-tcOO n-0~17°C-11x--+0PO1
So n-8~lL nocu! coo, - Among components (a), especially when the gel-liquid crystal transition temperature of the 5% by weight aqueous dispersion is 2
When a quaternary ammonium salt having a temperature of 0° C. or lower is used, the transparent fabric softener of the present invention can be obtained even with an extremely small shearing force. Examples of such quaternary ammonium salts include stearyl lauryl dimethyl ammonium chloride and dioleyl dimethyl ammonium chloride.

In the branched alcohol having 8 to 28 carbon atoms, unsaturated alcohol, or alkylene oxide adduct of 1 to 9 moles of unsaturated fatty acid, which is the component (b) used in the present invention, the alcohol may be 2-ethylhexyl alcohol, Guerbet alcohol, diamond Examples include Dole (manufactured by Mitsubishi Kasei ■), Oxocol (manufactured by Nissan Chemical ■), oleyl alcohol, and the like, and oleic acid is exemplified as the fatty acid. The alkylene oxide to be added is preferably ethylene oxide and/or propylene oxide. Particularly good are branched alcohols having 16 to 28 carbon atoms, particularly adducts of 1 to 5 moles of alkylene oxide of Guerbet alcohol.

Since the component (b) of the present invention also improves slipperiness when wet, it is also effective in reducing wrinkles and tangles that occur during washing and dehydration.

Examples of compounds having three or more active hydrogens, which are starting materials for the polyoxyalkylene adduct used as component (c) of the present invention, include trimethylolpropane, triethanolamine, glycerin, pentaerythritol, sorbitol, There are partially saponified products of sucrose, polyglycerin, polyvinyl alcohol, and polyvinyl acetate, etc. Polyhydric phenols include phenol resins and formalin condensates of alkylphenols, and polyamine compounds include ethylenediamine, diethylenetriamine, triethylenetetramine, and tetramine. Examples include ethylenepentamine, pentaethylenehexazine, and polyethyleneimine. Further, partially amidated products and N-alkyl substituted polyamines which are derivatives of these polyamines and which have three or more remaining active hydrogens can be used. Also, Ni! Alkanolamines such as monoethanolamine and jetanolamine containing both a group and a 0■ group can also be used.

A polyether compound, which is a polyoxyalkylene adduct, can be easily produced by adding an alkylene oxide that essentially contains ethylene oxide to a compound having three or more active hydrogens by a conventional method. Among these, ethylene oxide alone or a block or partially block adduct of ethylene oxide and propylene oxide is particularly preferred, and the addition order may be in any order, but propylene oxide (hereinafter abbreviated as PO) is added first. When ethylene oxide (hereinafter abbreviated as EO) is added, a good concentrated type fabric softener can be obtained.

The molecular weight of the polyether compound or its derivative is 5,00
0 to 2.000.000, preferably 10.00
It ranges from 0 to 100,000. The total weight of the EOll[ portion is 55% by weight or more, preferably 80% by weight or more of the total molecular weight.

Derivatives of the polyether compound of the present invention include crosslinking reaction products with compounds having isocyanate groups, sulfates, phosphoric oxides, carboxyalkylated products, fatty acid esters of the terminal hydroxyl group of the polyether compound, or cationic products of a part of the nitrogen atom. Examples include those that have become Among these, fatty acid esters and cationized products are particularly preferred.

In the case of fatty acid esterification, it is preferable that the fatty acid used has 7 to 23 carbon atoms, but the number of double bonds, technique, etc. do not have a large effect on performance.

Examples of the cationized product include compounds obtained by cationizing a polyether compound with dialkyl sulfuric acid, alkyl halide, etc., and cationized products neutralized with acetic acid, alkylbenzenesulfonic acid, etc.

In order to increase the storage stability of the fabric softener of the present invention, HL
B 7-8 polyoxyethylene type nonionic activators, amphoteric compounds such as hydroxysulfobetaine, 1-
It is preferable to add a trihydric lower alcohol.

Furthermore, the fabric softener of the present invention generally contains fragrances, pigments, silicone compounds, antibacterial agents, inorganic salts, etc., which are commonly used as fabric softener components.

The blending procedure for components (a), 0)), (c) and other components is not particularly limited, but components (a) and (b) must be mixed at 30 to 60%
It is common to heat the mixture to 0''C, add water at 30 to 60C with stirring, and then add component (c).

The mixer may be a blade agitator, a line mixer, or a kneader, as long as it is capable of mixing.

〔Effect of the invention〕

The transparent clothing fabric softener of the present invention, which essentially contains components (a) to (c), has the same flexibility and antistatic properties as ordinary fabric softeners, and is substantially transparent. Because of this, there is no coalescence of particles, resulting in high long-term stability. Also, it has a good appearance and looks good when put in rinsing water.

〔Example〕

The present invention will be specifically explained below with reference to Examples, but the present invention is not limited thereto.

Examples 1 to 10, Comparative Examples 1 to 2 Table 1 shows component (a), Table 2 shows component (b), and Table 3 shows (
c) Ingredients Table 4 shows the properties of transparent clothing fabric softeners using these ingredients.

1) Physical properties and stability The transmittance of the transparent clothing fabric softener to light at a wavelength of 667μ was measured using a Hitachi U-3200 spectrophotometer. After storage at room temperature of -10°C and 50°C for 60 days, appearance and fluidity were measured at room temperature. The fluidity was measured at 20° C. using a B-type rotational viscometer.

All of the transparent clothing fabric softeners of the present invention had a transparent appearance and were good with almost no change over time.

2) Softness: Commercially available cotton towels, knitted underwear, acrylic fibers, polyester fibers, and blended fibers were washed repeatedly recently using commercially available detergent Zabu (manufactured by Kao Corporation, registered trademark) to remove the detergent on the fabrics. After that, a 0.1% by weight aqueous solution of the transparent clothing softener of the present invention (effective content equivalent, 3.5
After stirring for 1 minute at 25° C. and a bath ratio of 1/30 (DH hard water), the mixture was air-dried at room temperature and left in a constant temperature and humidity room at 25° C. and 165% RH for 24 hours. When comparing the flexibility of the garments with those of clothing treated with a fabric softener at a normal concentration, both had sufficient flexibility.

Table 1 (a component Note) Umbrella 1 Contains 30% elaidyl group Table 2) Ingredients Table 3 (c) Ingredients

Claims (1)

[Claims] 1 (a) Cationic flexible base 12 that is substantially insoluble in water
-25% by weight (b) 1-10% by weight of an alkylene oxide 1-9 molar adduct of an unsaturated or branched alcohol having 8 to 28 carbon atoms or an unsaturated or branched fatty acid having 8 to 28 carbon atoms. and (c) an alkylene oxide adduct of a compound having 3 or more active hydrogen atoms that essentially contains ethylene oxide, with an oxyethylene group content of 55% by weight or more and an average molecular weight of 5,000 to 2,000,000.
A substantially transparent fabric softener which contains 1 to 5% by weight of a multi-chain polyether compound or a derivative thereof as an essential component and has a transmittance of 80% or more for light at a wavelength of 667 μm. 2. The clothing fabric softener according to claim 1, wherein the 5% by weight aqueous dispersion of the cationic softening base (a) has a gel-liquid crystal transition temperature of 20°C or lower.