JP2992156B2 - Soft finish - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a softening agent, and more particularly, it can impart excellent flexibility and elasticity (fluffiness) to various fibers and can be stored under severe conditions. It relates to a stable liquid softener.

[0002]

2. Description of the Related Art
Most of the products marketed as softeners for household use are mainly composed of quaternary ammonium salts having two long-chain alkyl groups in one molecule such as di (hardened tallowalkyl) dimethylammonium chloride. The composition was as follows. The reason for this is that the quaternary ammonium salt has a good softening effect on various fibers in a small amount. However, while the above quaternary ammonium salts have a remarkable softening effect on cotton, acrylic,
It is hard to say that the effect is sufficient for synthetic fibers such as polyester-based and polyamide-based fibers. If the treatment is performed at a higher concentration, the elasticity of the garment may be reduced and the texture may be impaired. Furthermore, since the quaternary ammonium salt has a high hydrophobicity, when it is poured into rinse water, if the stirring power is weak, the quaternary ammonium salt is poorly dispersible in water, so that the clothing may be uneven. Also, especially for long-term storage at low temperatures,
May thicken, gel, or separate. Commercially available softeners include additives such as polyoxyethylene-based nonionic surfactants, electrolytes and solvents in addition to the above quaternary ammonium salts to improve dispersibility in water and long-term storage stability. However, the effect is still insufficient.

[0003] In addition, conventionally, liquid softening agents containing various amines as softening bases are known. For example, Japanese Unexamined Patent Publication No.
Japanese Patent No. 59796 discloses a composition for imparting flexibility to a fiber containing a long-chain alkylamine such as methyldi (hardened tallowalkyl) amine. Japanese Patent Application Laid-Open No. 58-60070 discloses an acylated alkanolamine, Japanese Patent Application Laid-Open No. 61-166703 discloses a fiber material finishing agent for imparting smoothness and comfortable feel to fibers containing a quaternary ammonium salt and a fatty acid ester. Japanese Patent Application Laid-Open No. 61-275474 discloses a softening agent containing a condensation reaction product with an alkylamine polyglycol ether and a di (higher alkyl) cyclic amine and a Bronsted acid. JP-A-64-85368 discloses a divalent long chain alkylamine-anionic surfactant ion-pair complex, a non-silicone wax and JP-A-2-6662 discloses a softening composition containing a liquid carrier and a fabric conditioning composition containing an amine such as a condensate of a hydroxy lower alkylalkylenediamine and a higher fatty acid and an amphoteric fabric conditioning agent. JP-14076 describes a fabric conditioning composition containing a dilong chain alkylamine-polyfunctional carboxylic acid complex to impart flexibility and antistatic properties. Further, JP-A-52-5394
In the publication, a fabric conditioning composition containing a mono- or di-long-chain alkylalkylenediamine antistatic agent and a quaternary ammonium softener is described. However, these amine-containing softeners are relatively better in dispersibility and storage stability than quaternary ammonium salt-containing softeners, but their softening performance is not yet sufficient.

[0004]

Means for Solving the Problems As a result of intensive studies on a softener containing an amine, the present inventors have found that a specific esteramide tertiary amine or a neutralized or quaternary salt thereof,
Specific alkanolamide tertiary amine or neutralized salt or quaternary salt thereof, long chain fatty acid or neutralized salt thereof, specific tertiary amine or neutralized salt or quaternary salt thereof, higher alcohol or higher monoamine or higher diamine Ethylene oxide 3 to 50 mol adduct and one or two or more compounds selected from a specific amide compound or a specific ester compound are each used in a specific amount, and the pH is adjusted to 1 to 5 to provide excellent flexibility. In addition, they have found that a flexible finish that can impart elasticity (fluffiness) to clothing and can be stably stored even under severe conditions can be obtained, and the present invention has been completed.

That is, the present invention includes the following components (a) to (f): (a) component / [(b) component + (c) component] = 50/50 to
The purpose of the present invention is to provide a softening agent having a 95/5 (weight ratio) and a pH in the range of 1 to 5. (a): 4 to 30% by weight of a tertiary amine represented by the following structural formula (A) or a neutralized salt or a quaternary salt thereof

[0006]

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(Wherein, R ¹ represents an alkyl group having 1 to 4 carbon atoms or a hydroxyalkyl group R ² , R ³ represents an alkyl group or an alkenyl group having 11 to 21 carbon atoms m: 1 to 10 n: 2 to 3) (B): 0.1 to 5% by weight of a tertiary amine represented by the following structural formula (B) or a neutralized salt or a quaternary salt thereof.

[0008]

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(Wherein, R ^1b represents an alkyl group or hydroxyalkyl group having 1 to 4 carbon atoms R ^2b represents an alkyl group or alkenyl group having 11 to 21 carbon atoms p: 1 to 10 q: 2 to 3) (C) a fatty acid represented by the following structural formula (C) or a neutralized salt thereof
0.1 to 3% by weight R ^2c COOH (C) (in the formula, R ^2c means an alkyl group or an alkenyl group having 11 to 21 carbon atoms) (d); the following structural formula (D-1) or (D- 2) Tertiary amine or neutralized salt or quaternary salt thereof represented by the formula 0.1 to 10% by weight

[0010]

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(Wherein, R ⁴ : alkyl group or hydroxyalkyl group of 1 to 4 or C ₂ H ₄ OCOR ⁶ R ⁵ : H or COR ⁶ R ⁶ : alkyl group or alkenyl group R ^{7 of} 11 to 21 carbon atoms) , R ⁸ : H or COR ⁶ , one of which is COR ⁶ , which means r: 1-2.) (E): Ethylene oxide having 3 to 50 carbon atoms having 8 to 22 carbon atoms or higher monoamine or higher diamine. Molar adduct 0 to 5% by weight (f); one or two selected from a compound represented by the following structural formula (F) or an esterified product of a tri- to hexa-valent polyhydric alcohol and a fatty acid having 8 to 22 carbon atoms The above compounds 0-5% by weight

[0012]

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[0013] (wherein, R ^9: alkyl or alkenyl group of 7 to 21 carbon atoms X: H, CH ₃ or _{C 2 H 4 OH Y: H} , CH 3, C 2 H 4 OH, C S H 2S COOM or _{C S H 2S SO 3 M s} : 1~3 M: means H or diunsaturated metal)..

Representative examples of the tertiary amine compound represented by the formula (A) of the component (a) of the present invention can be obtained as follows. The following formula obtained by cyanoethylation or hydrogenation reaction of a dialkanolamine such as N-lower alkylalkanolamine or diethanolamine.

[0015]

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Can be obtained by reacting the compound represented by the formula with a fatty acid having 12 to 22 carbon atoms. In addition, as various compounds and impurities by-produced during these reactions,

[0017]

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[0018] Although a trace amount is produced, there is no problem even if these are contained. Acids for obtaining a neutralized product from the tertiary amine (A) include inorganic acids such as hydrochloric acid, nitric acid, phosphoric acid and sulfuric acid, and acetic acid, lactic acid, glycolic acid, citric acid and maleic acid having 6 or less carbon atoms. Organic acids can be mentioned, but hydrochloric acid is the cheapest and has high performance. In addition, the neutralization step is performed using a tertiary amine (A).
May be dispersed in water, or a tertiary amine (A) may be charged in a liquid or solid state into an aqueous acid solution. Of course, the tertiary amine (A) and the acid component may be simultaneously added. The quaternized tertiary amine (A) can be obtained by a known method using methyl chloride, dialkyl sulfate or the like.

The amine compound represented by the formula (B), which is the component (b) of the present invention, can be produced simultaneously with the production of the amine compound represented by the formula (A) of the component (a). Needless to say, the component (b) can be synthesized separately from the component (a) and adjusted by blending in an appropriate amount. Also, neutralized salts and quaternized products
It can be obtained in the same manner as the component (a), or may be neutralized or quaternized simultaneously with the component (a).

The component (c) of the present invention comprises the component (a)
The component (b) can be contained in the composition by appropriately adjusting the conditions for producing the component, and the component (c) may be separately added. When using neutralized salts of fatty acids,
K or Na salts are common. Of course, the component (a)
The amine compound of the component (b) and the fatty acid or the salt thereof of the component (c) may partially form a complex.

The structural formula (D-
Specific examples of the amine compound represented by 1) are N-methyldiethanolamine, a condensate of triethanolamine and a fatty acid having 12 to 22 carbon atoms, wherein the average number of ester bonds is 1.5 to 2.0, and the latter is 1.5 to 2.0. In this case, those of 1.4 to 2.2 can be mentioned. The fatty acids used here are preferably hardened tallow fatty acid, hardened palm oil fatty acid, unhardened tallow fatty acid, partially hardened tallow fatty acid, oleic acid, stearic acid, and the like. In addition, the structural formula (D-
As the amine compound represented by 2),

[0022]

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A condensate of the compound represented by the formula and a fatty acid having a degree of esterification in the range of 1.5 to 2.0 is preferred. The preferred blending amount of the component (d) is 0.1 to 10% by weight. In particular, by blending the component (a) to (c) in an amount of 1 to 50% by weight with respect to the total amount, the flexibility and elasticity are improved. The reason for this is not clear, but it is considered that component (d) interacts with other components and increases the amount of adsorption to clothing. When a neutralized salt or a quaternary salt of a tertiary amine represented by (D-1) or (D-2) is used as the component (d), the component (a) and the component (b) are simultaneously used. A neutralization reaction or a quaternization reaction may be performed, or they may be obtained by separately reacting.

More specifically, examples of the component (e) include the following. Alcohols derived from natural oils and fats having 8 to 22 carbon atoms, for example, coconut oil alkyl composition alcohol, tallow alkyl composition alcohol, lauryl alcohol, stearyl alcohol, oleyl alcohol, hardened tallow alkyl composition alcohol and various synthetic alcohols are mixed with 3 to 50 ethylene oxide. Mole, preferably 5 to 40 moles of a nonionic surfactant, monoamine such as laurylamine or alkylated tallow alkylated amine, or diamine such as oleylpropylenediamine 3 to 50 moles, preferably 5 to 40 moles of ethylene oxide. A molar addition of a nonionic activator is used. In the present invention, the component (e) is 0 to 5% by weight,
Preferably, the content is 0.2 to 3.5% by weight.

As the compound represented by the formula (F) of the component (f) of the present invention, the following compounds are more specifically exemplified.

[0026]

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The following are examples of the ester compound as the component (f). Glycerin, trimethylolpropane, pentaerythritol, sorbitol, tri- or polyhydric alcohols such as triethanolamine, such as lauric acid, oleic acid, stearic acid, and hardened tallow fatty acids, etc. It is an ester compound. The ester compound in which only some OH groups are esterified is better than the ester compound in which all OH groups are ester-bonded. The ester compound can also be obtained by a transesterification reaction between triglyceride and glycerin in addition to the above method. In the present invention, component (f) is 0 to
5% by weight, preferably 0.2 to 3.5% by weight.
Component (e) and component (f) are 0.2 to 5% by weight in total in the composition.
It is preferable to mix them.

In the present invention, the components (a) and [(b)
The weight ratio of (c) component] is (a) component / [(b) component + (c) component]
= 50/50 to 95/5, preferably 60/40 to 90/10.

The softening agent of the present invention has a pH of 1 to 5,
By adjusting the content to preferably 1.5 to 3.0, a liquid soft finish which is stable even under severe conditions can be obtained.

When commercializing a softening agent containing the compound of the present invention as an essential component, the total amount of the compound of the present invention is 5 to 45% by weight, preferably 6 to 30% by weight in consideration of the viscosity and handleability of the product. %, Particularly preferably 10 to 30% by weight.

When the softening agent of the present invention is prepared, the handleability of the softening agent is improved by adding 0.01 to 1% by weight of an alkali metal salt or an alkaline earth metal salt. These metal salts include NaCl, Na ₂ SO ₄ , CaC
l ₂ , KCl ₂ , K ₂ SO ₄ , MgCl _{2 and the} like.

In the liquid softener of the present invention, the viscosity and the particle size of the dispersed particles are determined from the viewpoint of handling properties and appearance. The average particle size is a value measured by a light scattering method.
0.03 to 1.0 μm, preferably 0.05 to 0.5 μm. Further, the viscosity of the softening agent of the present invention was measured by a B-type viscometer.
It is 10 to 200 cps, preferably 20 to 100 cps, as measured at ° C.

The soft finish of the present invention may further comprise a silicone compound such as dimethylpolysiloxane, dimethylpolysiloxane partially modified with an amino group or a polyoxyalkylene group, particularly preferably partially modified with a polyoxyalkylene group. By blending the dimethylpolysiloxane thus obtained, the texture of the softly treated clothing can be improved without impairing the water absorption performance. These silicone compounds
It is preferable that the content is 0.02 to 1.0% by weight.

In general, a pigment or a fragrance is blended in order to improve the appearance and fragrance of the product. As the dye, an organic dye having both a SO ₃ group, an amino group and an ammonium group in the molecule is preferable from the viewpoint of storage stability, and the amount of the dye is 1 to 100 ppm, more preferably 5 to 50 ppm. Examples of the dye used in the soft finish of the present invention include the following. [Blue dye] CI Direct Blue 1 CI Direct Blue 2 CI Direct Blue 6 CI Direct Blue 15 CI Direct Blue 41 CI Acid Blue 1 CI Acid Blue 7 C.I. I.Acid Blue 9 C.I.Acid Blue 15 C.I.Acid Blue 22 C.I.Acid Blue 29 C.I.Acid Blue 90 C.I.Acid Blue 104 C.I.Acid Blue 117 C.I Acid Blue 138 CI Food Blue 1 [Green Dye] CI Direct green 1 CI Direct green 6 CI Direct green 28 CI Acid green 3 CI Acid green 9 C.I.Acid green 16 C.I.Acid green 20 C.I.Food green 3 As a fragrance, a hydrocarbon fragrance or a functional group is used.

[0035]

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Those mainly comprising a fragrance component composed of a compound having the following are preferred. Particularly stable fragrances include cinnamic alcohol, phenylethyl alcohol (β-phenylethyl alcohol), terpineol (1-methyl-4-isopropyl-1-cyclohexen-8-ol), and vanillin (4-hydroxy-3-methoxy). Benzaldehyde), acetylisoeugenol (2-methoxy-4-propenylphenylacetate), p-ter
t-butylcyclohexyl acetate, edion (methyldihydrojasmonate), geranyl acetate (2,6-dimethyl-2,6-octadien-8-ylacetate), aldehyde C-14 peach (γ-undecalactone), yonone [4- (2,6,6-trimethyl-2-cyclohexen-1-yl) -3-buten-2-one], tentalome (6-acetyl-1,1,3,4,4,6-hexamethyl Tetrahydronaphthalene), coumarin (1,2-benzopyrone), sedolyl methyl ether, pearlide (1,
3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-γ-benzopyran).
Further, the fragrance rate is desirably 0.05 to 2.0%.

In order to improve the handleability and moisturizing property of the product, 10% by weight of a C1 to C3 monohydric alcohol is used.
The following amounts can also be blended. Examples of such alcohol include methanol, ethanol, isopropyl alcohol, ethylene glycol, glycerin and the like.

Further, it is often the case that an optical brightener, an antifoaming agent, or an antibacterial agent is blended in the product of the soft finish, and the present invention is applicable to the present invention. The balance other than the components (a) to (f) and the optional components is water.

[0039]

The soft finish of the present invention imparts sufficient flexibility and antistatic properties to various fibers, imparts excellent elasticity, and is stable even when stored under severe conditions. Furthermore, since the flexible component of the present invention has good biodegradability, the possibility of environmental pollution is small.

[0040]

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

The compounds used in Examples and Comparative Examples are shown in Tables 1 to 5 below.

[0042]

[Table 1]

[0043]

[Table 2]

[0044]

[Table 3]

[0045]

[Table 4]

[0046]

[Table 5]

Note: * The degree of esterification indicates the average number of ester bonds in the molecule.

Examples 1 to 16 and Comparative Examples 1 to 5 Using the components (a) to (g) (the component (g) is an optional component) shown in the above Tables 1 to 5, Was prepared. In each case, (a), (b),
The total amount of the components (c), (d) and (f) was adjusted to 16% by weight, and 10 parts by weight of CI Acid Blue 15 and 0.2% by weight of the compounded fragrance shown in Table 6 below were added to all the formulations.

[0049]

[Table 6]

<Evaluation of flexibility and elasticity> (1) Treatment method 2 kg of a commercially available cotton towel and 1 kg of an acrylic jersey were 3.5 °
Repeatedly wash (30 liter washing machine) 5 times with a commercially available detergent attack (manufactured by Kao Corporation, registered trademark) in DH hard water,
After removing the fiber treating agent attached to each fiber, Tables 7-9
1.5 g as an active ingredient was added at 25 ° C.
Treated with stirring for 1 minute. (2) Evaluation method The cloth treated by the above method was air-dried in a room, and then left in a constant temperature and humidity room at 25 ° C. and 65% RH for 24 hours. These fabrics were evaluated for flexibility, elasticity and stability. <Evaluation of Flexibility and Elasticity> The evaluation of flexibility and elasticity was performed by comparing a pair of cloth treated with 10 cc of a softening agent containing 15% by weight of dihydrogenated tallow alkyldimethylammonium chloride as a control. The evaluation is expressed as follows. +2; softer or more elastic than control +1; slightly softer or slightly more elastic than control 0; same as control -1; control slightly softer or slightly less elastic than control -2; softer or more control Less elasticity <Evaluation of stability> The compositions having the formulations shown in Tables 7 to 9 were stored and evaluated under the following conditions. (1) Storage conditions (a) 50 ° C (b) Repetition of 50 ° C and 30 ° C (1 cycle / day) (c) Repetition of -20 ° C and 10 ° C (1 cycle / day) (d) -10 ° C (2) Evaluation ：: No change in appearance for 2 months △: No change in appearance for 1 month and separation or thickening after 2 months ×: Separation or thickening after 1 month

[0051]

[Table 7]

[0052]

[Table 8]

[0053]

[Table 9]

Note) 1) pH: pH of stock solution. 2) Particle size; average particle size of dispersed particles, measured by light scattering method,
μm. 3) Viscosity; viscosity at 25 ° C. measured by a B-type viscometer, c
ps.

As shown in Tables 7 to 9, the formulations of the present invention provide flexibility and elasticity and satisfy sufficient stability.

Claims (7)

(57) [Claims] (1) The composition contains the following components (a) to (f):
[Component (b) + component (c)] = 50/50 to 95/5 (weight ratio) and a pH range of 1 to 5. (a): 4 to 30% by weight of a tertiary amine represented by the following structural formula (A) or a neutralized salt or a quaternary salt thereof: (Wherein, R ¹ represents an alkyl group or hydroxyalkyl group having 1 to 4 carbon atoms R ² , R ³ : an alkyl group or alkenyl group having 11 to 21 carbon atoms m: 1 to 10 n: 2 to 3). (B): a tertiary amine represented by the following structural formula (B) or a neutralized salt or a quaternary salt thereof in an amount of 0.1 to 5% by weight: (Wherein, R ^1b represents an alkyl group or hydroxyalkyl group having 1 to 4 carbon atoms R ^2b represents an alkyl group or alkenyl group having 11 to 21 carbon atoms p: 1 to 10 q: 2 to 3) (c ); A fatty acid represented by the following structural formula (C) or a neutralized salt thereof
0.1 to 3% by weight R ^2c COOH (C) (in the formula, R ^2c means an alkyl group or an alkenyl group having 11 to 21 carbon atoms) (d); the following structural formula (D-1) or (D- 2) A tertiary amine represented by the formula or a neutralized salt or a quaternary salt thereof 0.1 to 10% by weight (Wherein, R ⁴ : alkyl group or hydroxyalkyl group of 1 to 4 or C ₂ H ₄ OCOR ⁶ R ⁵ : H or COR ⁶ R ⁶ : alkyl group or alkenyl group of 11 to 21 carbon atoms R ⁷ , R ⁸ : H or COR ⁶ , one of which is COR ^6. R: 1 to 2) (e); 3 to 50 mol ethylene oxide adduct of higher alcohol having 8 to 22 carbon atoms or higher monoamine or higher diamine 0 to 5% by weight (f); one or more compounds selected from the compounds represented by the following structural formula (F) or esterified products of tri- to hexa-valent polyhydric alcohols with fatty acids having 8 to 22 carbon atoms 0-5% by weight (Wherein, R ^9: alkyl or alkenyl group of 7 to 21 carbon atoms X: H, CH ₃ or _{C 2 H 4 OH Y: H} , CH 3, C 2 H 4 OH, C S H 2S COOM or C _{S H 2S SO 3 M s:} 1~3 M: means H or diunsaturated metal). 2. The softening agent according to claim 1, further comprising 0.01 to 1% by weight of an alkali metal salt or an alkaline earth metal salt. 3. The soft finish according to claim 1, wherein the particles dispersed in the soft finish have an average particle size in the range of 0.03 to 1.0 μm. 4. The softening agent according to claim 1, wherein the viscosity at 25 ° C. measured by a B-type viscometer is in the range of 10 to 200 cps. 5. A flexible finish according to claim 1, which contains 0.02 to 1.0% by weight of dimethylpolysiloxane and / or dimethylpolysiloxane partially modified with amino groups or polyoxyalkylene groups. Agent. 6. The softening agent according to claim 1, which contains 1 to 100 ppm of an organic dye having a SO ₃ group and an amino group or an ammonium group in the molecule. 7. An alcohol having 1 to 3 carbon atoms having 1 to 3 carbon atoms.
The softening agent according to any one of claims 1 to 6, which contains 10% by weight or less.