JPH0768668B2 - Textile treatment composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a textile treatment composition. More particularly, the present invention relates to a textile treatment composition suitable for use in the rinse cycle during textile washing operations that imparts a softening / antistatic effect to the fiber, the composition being at elevated temperatures and below ambient temperature (sub-nor).
mal) characterized by excellent softening, water dispersibility and preservability after long-term storage at temperature.

Textile treatment compositions suitable for imparting a softening and antistatic effect to fibers during washing are well known in the art and have found widespread commercial use. Conventionally, rinsing agent-added fiber softening compositions include as active ingredient a substantially water-insoluble cationic substance having two long alkyl chains. Representative of such materials are di-hard tallow dimethyl ammonium chloride and imidazolinium compounds substituted with two tallow groups. These materials are usually prepared in the form of dispersions in water, and such aqueous dispersions have about 10% or more cationic softener without encountering severe product viscosity and storage stability problems. It is generally impossible to prepare. More concentrated dispersions of emollients can be obtained as described in European Patent Application No. 0 000 406 and British Patent No. 1 601 360,
Although can be prepared by including therein certain nonionic additive softening materials, such compositions tend to be relatively poor in terms of softening effect per unit weight of active agent. In addition, product viscosity and stability issues become increasingly uncollectible in thicker aqueous dispersions, making the commercial range of application to softening activator levels in the range of about 15 to about 20% effective. Restricted to.

U.S. Pat.No. 4,454,049 contains substantially at least 10
A concentrated liquid fiber softening agent is disclosed which comprises a water miscible organic solvent in an amount of%, more typically about 30-40%.

U.S. Pat. No. 2,995,520 discloses the use of acid salts of certain imidazoline derivatives for softening fibrous materials such as cotton or paper. The treatment baths used for textile treatment contain 0.001% to 1% of the salt of the imidazoline derivative. It is said that it is desirable to keep the substance in a low molecular weight fatty alcohol for freezing in the shipment.

Other patents, more recent than US Pat. No. 2,995,520, disclose the use of acid salts of imidazoline derivatives for softening fibers. However, according to the state of the art, quaternary ammonium salts are preferred over acid salts of, for example, acyclic tertiary amines or cyclic amines in the sense of fiber softening.

Therefore, it is an object of the present invention to provide a liquid fiber softening composition that can be prepared both as a diluted and a concentrated aqueous dispersion without the need for significant amounts of organic solvents. The composition of the present invention has both high temperature and normal temperature or less,
Moreover, it has excellent stability even under long-term storage conditions. These compositions also exhibit excellent softening, antistatic and fiber rewetting properties over a wide range of fiber types.

SUMMARY OF THE INVENTION The present invention provides a stable aqueous dispersion containing the following components (a), (b) and (c).

(A) one or more selected from the group consisting of di (higher alkyl) cyclic amines of formula (I) and mixtures thereof herein.
40% by weight of amine, (b) having two higher alkyl groups, each of 8 to
A compound selected from the group of conventional quaternary ammonium softeners having 20 carbon atoms, and (c) a dispersing aid which is a Bronsted acid having a pKa not greater than 6 of 1 to 50% by weight of amine. The amount of agent, said acid, is such that the pH of the dispersion is 5 or less.

DETAILED DESCRIPTION OF THE INVENTION The compositions of the present invention use stable aqueous dispersions with certain cyclic amines (even at high amine concentrations) and conventional di (higher alkyl) quaternary ammonium salts in significant amounts. It is based on the finding that it can be prepared without.

a) Amine The amines used in the composition of the present invention are selected from the group consisting of:

(I) Compound of Formula I Formula I Where n is 2, 3 or 4 preferably 2 and R ₁ and R ₂ are independently C _{8 to} C ₃₀ alkyl or alkenyl, preferably C ₁₁ to
C ₂₂ alkyl, more preferably C ₁₅ -C ₁₈ alkyl, or a mixture of such alkyl groups. An example of such a mixture is coconut oil, or "soft" (non-hardened)
An alkyl group derived from a (nonhardened) tallow and a hardened tallow. Q is CH, CH ₂ , NH or N, preferably N. X is Wherein T is NR ₅ , —R ₅ is H or C ₁ -C ₄ alkyl and is preferably H, and R ₄ is a divalent C ₁ -C ₃ alkylene group or (C ₂ H ₄ O). ) m, where m is a number from 1 to 8.
Or X is R ₄ .

The composition according to the invention comprises 1 to 40% by weight of amine, preferably 2
To 35%, more preferably 2 to 20%.

Detergent carryover, which may occur in the washing process, tends to adversely affect the softening performance of detergent-added softening agents, especially under conditions prevailing in American washing machines. It has been discovered that the amines of formula I are less sensitive to detergent carryover than, for example, ditallowdimethylammonium chloride.

b) Quaternary Ammonium Salt As the second component, the dispersion of the present invention contains a conventional di (higher alkyl) quaternary ammonium salt softening agent. As used herein with respect to quaternary ammonium salts, "higher alkyl" means an alkyl group having 8 to 30 carbon atoms, preferably 11 to 22 carbon atoms. Examples of such conventional quaternary ammonium salts are (i) acyclic quaternary ammonium salts having the formula: Here, R ₂ is an acyclic aliphatic C _{15 to} C ₂₂ hydrocarbon group, and R ₃ is C ₁ to
C ₄ saturated alkyl or hydroxyalkyl group, R ₄ is R ₂
It is selected from R ₃ and A is an anion.

(Ii) Diamide quaternary ammonium salt having the following formula Here, R ₁ is an acyclic aliphatic C ₁₅ -C ₂₁ hydrocarbon group, and R ₂ is 1
A divalent alkylene group having 3 to 3 carbon atoms, R ₅ and R ₈ are
Saturated alkyl or hydroxyalkyl group having C ₁ ~C _4, A ^-
Is an anion.

(Iii) Diamidoalkoxylated quaternary ammonium salt having the formula: Where n is equal to 1 to about 5 and R ₁ , R ₂ , R ₅ and A ⁻
Is as defined above.

(Iv) Fourth imidazolinium compound.

including.

Examples of component (i) are the well-known dialkyldimethylammonium salts, such as ditallowdimethylammonium chloride,
These are ditallow dimethyl ammonium methyl sulphate, di (hydrogenated tallow) dimethyl ammonium chloride, distearyl dimethyl ammonium chloride and dibehenyl dimethyl ammonium chloride.

An example of component (ii) is methylbis (tallowamidoethyl)
(2-hydroxyethyl) ammonium methylsulfate and methylbis (hydrogenated tallow amidoethyl) (2-
Hydroxyethyl) ammonium methylsulfate
R ₁ is an acyclic aliphatic C ₁₅ -C ₁₇ hydrocarbon group, R ₂ is an ethylene group, R ₅ is a methyl group, R ₈ is a hydroxyalkyl group, and A is a methylsulfate anion. These substances are sold by the Sherex Chemical Co.
mpany) and Varisoft (R) 222 and Varisoft (R) 110, respectively.

An example of (iv) is 1-methyl-1-taro-amido-ethyl-2-
Tallow imidazolinium methyl sulphate and 1-methyl-1- (hydrogenated tallow imidoethyl) -methyl sulphate.

The quaternary ammonium salt (b) preferably comprises 1 to 20% by weight of the composition according to the invention, more preferably 2 to 20% by weight.

The weight ratio of amine (a) to quaternary ammonium salt (b) is 1
It is in the range 0: 1 to 1:10, preferably 3: 1 to 1: 3.

Di (higher alkyl) imidazolinium compounds are preferred for use in the present invention, particularly 1- (lower alkyl) -1- (higher alkyl) amidoethyl-2- (higher alkyl) imidazolinium compounds, wherein “Alkyl” means 1 carbon atom
Means alkyl having 4 to 4 and "higher alkyl" means alkyl having 11 to 22 carbon atoms.

c) Bronstedt Acid Dispersion further comprises Bronstedt acid having a pKa value of 6 or less.

The amount of acid is such that the pH of the dispersion after stirring is not more than 5, preferably not more than 4 and more preferably in the range 2.5 to 4. Typically, the amount of acid will be from 1 to 50%, preferably from 2 to 30%, most preferably from 3 to 15% by weight of amine.

Examples of suitable acids are inorganic mineral acids, carboxylic acids, especially those of low molecular weight.
C ₁ -C ₅ carboxylic acids, aromatic carboxylic acids such as benzoic acid,
Contains alkyl sulfonic acid.

Suitable inorganic acids include _{HCl, HBr, H 2 SO 4} , the HNO ₃ and H ₃ PO _4. Suitable organic acids include benzoic acid, formic acid, acetic acid, methylsulfonic acid and ethylsulfonic acid. Preferred acids are phosphoric acid, formic acid and methyl sulfonic acid.

d) Organic solvent The composition of the present invention can be prepared without the use of any organic solvent. However, the presence of organic solvents (eg, low molecular weight, water-miscible fatty alcohols) does not interfere with the storage stability, viscosity or softening behavior of the compositions of the present invention.

Typically, amines are available from solid bulk chemical suppliers as solutions in organic solvents such as isopropanol. It is not necessary to remove such solvents to make the compositions of the present invention. In fact, additional solvent is added if this is deemed necessary.

However, compared to water, organic solvents are expensive and difficult to handle due to their flammability and sometimes toxicity. Therefore, the composition should be provided with a low level of organic solvent, ie less than 10%, preferably 2%.
It is desirable to prepare less than%.

e) Optional Silicone Compounds The compositions of the present invention may optionally predominantly comprise an aqueous emulsion of a linear polydialkyl or alkylaryl siloxane. Suitable silicones in which the alkyl radical has 1 to 5 carbon atoms and can be wholly or partially fluorinated are 100 to 100,000 centistokes at 25 ° C., preferably
It is a polydimethylsiloxane having a viscosity in the range of 300 to 6,000 centistokes.

It has been discovered that the ionic charge properties of the silicones used in combination are important in determining both the degree of deposition and the flatness of the silicone distribution and, therefore, the properties of the fibers treated therewith. It was

Silicones with cationic character tend to have increased deposition. The silicones found to be valuable in providing fiber feel benefits have polymorphic linear properties and are preferably polydialkylsiloxanes where the alkyl group is the most common methyl. Such silicone polymers are often made commercially by emulsion polymerization with strong acid or strong alkaline catalysts in the presence of nonionic or mixed nonionic anionic emulsifier systems.

In the present invention, any silicone component includes a silicone of a cationic character defined as one of the following, and the siloxane has a viscosity at 25 ° C. of 100 to 100,000 CS.

(A) predominantly linear di-C ₁ -C ₅ alkyl or C ₁ -C ₅ alkyl, aryl siloxane prepared by emulsion polymerization using a cationic surfactant as an emulsifier, (b) alfa omega di Quaternise
d) di-C ₁ -C ₅ alkyl, or C ₁ -C ₅ alkyl, aryl siloxane polymer, or (c) amino group is substituted and quaternized, the degree of substitution (ds) is 0.001 to 0.1, preferably Amino functional di C ₁ -C ₅ alkyl or alkylaryl siloxane polymers in the range of 0.01 to 0.075.

The weight ratio of siloxane to amine component in the composition of the present invention is typically 5: 1 to 1: 100, preferably 2: 1 to 1:10.

Silicone components suitable for use in the present invention are more fully disclosed in GB 1,549,180.

f) Optional Nonionics The composition optionally contains the disclosed nonionics for use in the softening composition. Such nonionics and their levels of use are disclosed in US Pat. No. 4,454,049, the disclosure of which is hereby incorporated by reference.

Specific examples of nonionics suitable for the composition of the invention are glycerol esters (eg glycerol monostearate), fatty alcohols (eg stearyl alcohol).
And alkoxylated fatty alcohols. The nonionic material, if used, is typically used at levels in the range of 0.5 to 10% by weight of the composition.

g) Other Optional Ingredients In order to further improve the stability of the compositions herein and adjust their viscosity, these compositions may contain relatively small amounts of electrolytes. A highly preferred electrolyte is CaCl ₂ . It has been discovered that the Brookfield viscosity of concentrated dispersions can be reduced to less than 100 cps using a relatively small amount of CaCl ₂ (ie 600 ppm).

The compositions of the present invention can optionally include other ingredients known to be suitable for use with fabric softeners. Other auxiliaries include fragrances, preservatives, bactericides, colorants, dyes, fungicides,
Includes stabilizers, brighteners and opacifiers. These auxiliaries, if used, are usually added at their usual levels. However, in the case of fiber treatment benefits, i.e., composition blends utilized as perfumes, these materials are added at levels higher than normal, depending on the degree of concentration of the product.

Examples I-IV The following compositions are prepared.

It is observed that some hydrolysis of the ditallow imidazolinium component occurs during operation. This has not been found to significantly affect the softening performance of the composition.

Examples V-VIII The following examples are prepared. Each has a p in the range 2.5 to 5
Has an H value.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-52-34098 (JP, A) JP-A-52-53094 (JP, A) JP-A-61-207670 (JP, A)

Claims (9)

[Claims] 1. A) 1 to 40% by weight of an amine selected from the group consisting of di (higher alkyl) cyclic amines of formula I and mixtures thereof: (Where n is 2, 3 or 4, R ₁ and R ₂ are independently C ₈ -C ₃₀ alkyl or alkenyl, Q is CH, CH ₂ , NH or N
And X is Here, T is NR ₅ , -R ₅ is H or C ₁ -C ₄ alkyl-, R ₄ is a divalent C ₁ -C ₃ alkylene group or (C ₂ H ₄ O) m,
Where m is a number from 1 to 8 or X is R ₄ . (B) a compound selected from the group of conventional quaternary ammonium softeners in which each alkyl has two higher alkyls with 8 to 30 carbon atoms, and (c) 1 to 50% by weight of the amine, A Bronsted acid having a pKa value not greater than 6, a stable aqueous dispersion in which the amount of the acid is such that the pH of the dispersion is 5 or less. 2. The dispersion according to claim 1, wherein the weight ratio of (a) to (b) is in the range of 3: 1 to 1: 3. 3. A dispersion as claimed in claim 1, which contains from 2 to 35% by weight of amine. 4. The method according to any one of claims 1 to 3, wherein the amine is 1- (higher alkyl) amidoethyl-2- (higher alkyl) imidazoline and the higher alkyl is an alkyl having 11 to 22 carbon atoms. The dispersion according to item 1. 5. The compound (b) is 1- (lower alkyl)-
1- (higher alkyl) amidoethyl-2- (higher alkyl)
Selected from imidazolinium compounds, lower alkyl is 1
A dispersion according to any one of claims 1 to 4 wherein alkyl having from 4 to 4 carbon atoms is represented, and higher alkyl is alkyl having from 11 to 22 carbon atoms. 6. A dispersion according to claim 1, which further comprises 0.5 to 10% of a nonionic substance. 7. (a) 1 to 40% by weight amine selected from the group consisting of di (higher alkyl) cyclic amines of formula I and mixtures thereof: (Where n is 2, 3 or 4, R ₁ and R ₂ are independently C ₈ -C ₃₀ alkyl or alkenyl, Q is CH, CH ₂ , NH or N
And X is Here, T is NR ₅ , -R ₅ is H or C ₁ -C ₄ alkyl-, R ₄ is a divalent C ₁ -C ₃ alkylene group or (C ₂ H ₄ O) m,
Where m is a number from 1 to 8 or X is R ₄ . (B) a compound selected from the group of conventional quaternary ammonium softeners, each alkyl having two higher alkyls with 8 to 30 carbon atoms, and (c) 1 to 50% by weight of the amine, A Bronsted acid having a pKa value not greater than 6, the amount of the acid including such an amount that the pH of the dispersion is 5 or less, and mainly linear di (C ₁ -C ₅ ) alkyl, Or an emulsion of a C _{1 to} C ₅ alkylaryl siloxane, wherein the alkyl groups can be partially or wholly fluorinated and substituted with a cationic nitrogen atom, the siloxane having 25 A dispersion having a viscosity of at least 100 centistokes at 100 ° C up to 100000 centistokes and a weight ratio of siloxane content of the emulsion to amine components in the range of 5: 1 to 1: 100. 8. The dispersion according to claim 7, wherein the siloxane is polydimethylsiloxane. 9. The dispersion according to claim 7, which further comprises 0.5 to 10% of a nonionic substance.