JPH07505189A - Concentrated fabric softening composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Concentrated fabric softening composition Technical field The present invention provides concentrated fabric softening compositions in liquid form for use in the rinse step of a laundry cycle. relating to things.

Background technique Fabric softening compositions to be added in the rinse step of a laundry cycle are well known in the art. and has found large-scale commercial applications.

In addition to achieving excellent fabric softening performance, in recent years fabric softener manufacturers have The aim has been to provide compositions with improved biodegradability.

Therefore, ester-containing fabric softening actives can be substituted for typical quaternary softening actives. Discloses that it should be used as a replacement or in combination with regular quaternary softening active ingredients has been done. Such ester-containing active ingredients include, for example, British Patent No. , 561.808 and e.g. EP-A No. 345 842. Mention is made of imidacillin ester derivatives which are further disclosed in the specification.

However, concentrated compositions containing said ester imidacillin compounds are not suitable for long-term use. It has been found that it has a tendency to produce off-notes when stored. .

The present invention solves this problem by adding a small amount of chelating agent for heavy metal ions to the concentrated composition. This is based on the discovery that the problem can be solved miraculously by adding it to products.

U.S. Pat. No. 3,756,950 discloses a method for reducing fabric shear. Acidity of conventional quaternary ammonium softening active ingredients and aminocarboxylic acid chelators Fabric softening compositions containing a salt are disclosed.

The present invention is based on the formula (wherein X and Xl are independently C11 to C21 hydrocarbyl groups, preferably C11 to C21 hydrocarbyl groups, preferably C 13-C17 alkyl, m and n are independently 2-4, preferably 2 ), preferably at least 10% by weight in the imidacillin ester softening active ingredient of Brønsted acid in such an amount as to have 5 to 25% by weight and a pH below 4. A concentrated fabric softening composition comprising 0.01% to 1% of the composition, preferably is characterized by containing a chelating agent for heavy metal ions in an amount of 0.05-0.2% Concentrated fabric softening compositions are included.

The composition of the invention has the formula (wherein X and Xl are independently C-C hydrorubyl groups, preferably 013-C 17 alkyl, most preferably straight chain C17 alkyl, where m and n are independently 2-4, preferably m and n are both 2) Contains at least 10%, preferably 15% to 25%, of a syringe ester softening compound. have The total concentration of softener active ingredients cannot exceed about 40% by weight.

Substituents X and Xl may optionally be various groups such as alkoxyl, hydroxyl, etc. may be substituted or branched with groups such as It will be understood that there is something objectionable here.

Additionally, X and/or Xl may optionally be unsaturated (i.e. , alkenyl group). Preferred substituted imidacilline ester softening compounds are: They will be referred to as dialkylimidacyline ester compounds. Shitaro Imida Shiri most preferred.

pH The pH of the composition measured in distilled water at 3% dilution is below 4, preferably 2. Should be 5-4.

To achieve such a pH, a Brønsted acid with a pKa value of 6 or less must be used. is present in the composition.

Examples of suitable acids include inorganic mineral acids, carboxylic acids, especially low molecular weight (C-C5) carboxylic acids. Bonic acids, aromatic carboxylic acids such as benzoic acid, and alkylsulfonic acids are mentioned. can be lost.

Suitable inorganic acids include HC1, HBr, H2SO4, HNO and H3PO 4 can be mentioned. Suitable organic acids include benzoic acid, formic acid, acetic acid, methyl sulfonate. ethylsulfonic acid and ethylsulfonic acid. Preferred acids are phosphoric acid, formic acid, and and methylsulfonic acid.

liquid carrier The composition comprises a liquid carrier, such as water, preferably water and a 01-C4-hydric alcohol. (e.g. ethanol, propatool, isoproptool, butanol, and mixtures thereof), with isopropanol being preferred. these pairs The composition contains 60% to 98%, preferably 70% to 95% liquid carrier. preferably The amount of C1-C4-hydric alcohol in the liquid carrier is 5-50% by weight of the softening compound. % by volume, with the remainder of the liquid carrier being water.

Chelating agent for heavy metal ions The chelating agent comprises 0.01% to 1% of the composition, preferably 0.05 to 0.2%. exists in an amount of

Chelating agents for heavy metal ions useful herein include any known in the art for that purpose. Any substance may also be mentioned.

Suitable compounds include the following carboxylic acids and their salts: acid, tartaric acid, oxydisuccinic acid, ethylenediamine-N, N-disuccinic acid, oxydisuccinic acid, xydiacetic acid, carboxymethyl tartronic acid, carboxymethyloxysuccinic acid , tartrate monosuccinic acid/tartrate disuccinate in a weight ratio of 80:20. Lend, and 2-dodecenylsuccinic acid, and dodecylsuccinic acid.

This category includes polycarboxylic acids and their salts, such as polyacrylates. It also includes copolymers of maleic acid and acrylic acid.

Other suitable compounds are the aminocarboxylic acids and salts thereof, such as nitrates described below. Lilotriacetic acid, ethylenediaminetetraacetic acid, cycloethylenediaminetetraacetic acid, tra ns　1　.

2 Diaminocyclohexane N, N, N', N' Tetraacetic acid monohydrate (CHELCD ), hydroxyethylenediaminetetraacetic acid, diethylenetriaminopentaacetic acid, N- These are glyceryl iminodiacetic acid and N(-2hydroxypropyl)iminodiacetic acid.

Polyaminopolyalkylenephosphonic acids and their salts, e.g. ethylenedia Minetetramethylenephosphonic acid and diethylenetriaminepentamethylenephos Ponic acid is also suitable as a chelating agent in the present invention.

Optional ingredients The fully formulated fabric softening composition optionally comprises a substituted imidasyl of the formula In addition to the ester softening compound, liquid carrier, and acid, one or more of the following ingredients may be added: The composition of the present invention further comprises a di(higher alkyl) quaternary ammonium softener. can be included. This composition is a di(higher alkyl) quaternary ammonium softener. It can contain 0% to 25% (preferably 0.1% to 10%).

Quaternary softeners useful herein are selected from the group of: (wherein R2 is an ester group) is an acyclic aliphatic C-C hydrocarbon group optionally interrupted by R3 is 0 1-C4 saturated alkyl or hydroxyalkyl group, R is R and R3 or and A is an anion) (where R2 and optionally R4 are esters) Rapidly biodegradable compounds of formula (i) which are interrupted by groups are EPA No. 2399 10); (II) Formula (In the formula, Ro is an acyclic aliphatic C15-C2° hydrocarbon group, and R2 has 1 carbon number. -3 divalent alkylene group, R and R8 are C1-C4 saturated alkyl or is a hydroxyalkyl group and A- is an anion) class ammonium salt; formula (111) (where n is equal to 1 to 5 and RR l・　2・R5 and A- is as defined above) A diamide alkoxylated quaternary ammonium salt having the formula (1v) (In the formula, R is C-C saturated alkyl, and 'R2 is 01-C4 saturated alkyl. (2 is NH or O, A- is an anion) A quaternary imidazolinium compound having

Examples of component (i) are the well-known dialkyldimethylammonium salts, such as citalo. -Dimethylammonium chloride, Citalodimethylammonium methylsulfate ate, di(hydrogenated tallow)dimethylammonium chloride, dibehenyldime It is tylammonium chloride.

Examples of components (11) and (111) include R1 being an acyclic aliphatic C-C hydrocarbon group; R2 is ethylene group, R5 is methyl 15 1-phrase group, R8 is a hydroxyalkyl group, and A is a methyl sulfate anion. Chilbis(tallowamidoethyl)(2-hydroxyethyl)ammonium methyl sulfate and methylbis(hydrogenated tallowamide ethyl)(2-hydroxy ethyl) ammonium methyl sulfate. These substances The product name is Varisol' from Kusu Chemical Company. t) 222 and Parisoft R110.

An example of component (1v) is ]-]methyl-1-tallowaminoethyl 2-tallowimida Zolinium methyl sulfate and 1-methyl-1-(hydrogenated tallowamide) ethyl) methyl sulfate.

The ratio of quaternary ammonium salt to cyclic amine should not exceed 10:1; Preferably it does not exceed 2:1.

Aqueous dispersions of quaternary softeners are prepared in a conventional manner and are typically dissolved under continuous stirring. The quaternary material in molten form is prepared by injecting it into a batch containing water.

Once this dispersion is prepared, the concentrated composition resulting from steps (a) to (d) is will be added to this.

In the case of a continuous process, the concentrated composition is treated with quaternary ammonium immediately after step (d). It will be added to the aqueous dispersion of the compound.

In another convenient method, the concentrated composition obtained after step (d) is first Cool to a temperature of 5-25 °C (room temperature) and then add to the aqueous dispersion of quaternary softener. For example, some time may be allowed for storage and transportation of the concentrated composition before Dew.

In any case, the viscosity of the finished product is between 20 and 500 cp.

Preferably it will be within the range of 50 to 150 cp.

Optional auxiliary softener There are 8 co-softening agents used here. Fatty acid esters of polyhydric alcohols having carbon atoms up to, e.g. 26 31. It can be selected from those described in the specification of No. 114. like this Examples of esters include sorbitan esters and glycerol esters, e.g. For example, sorbitan monostearate, sorbitan monooleate, glycerol molybdenum Nosy and tri fatty acid esters (acids include stearic acid, oleic acid, lauric acid) acid, capric acid, caprylic acid, caproic acid, valeric acid, butyric acid, propionic acid and and acetic acid). Individual glycerols have the same fatty acid group or by mixed esters (e.g. glycerol mono stearate trioleate). The polyethylene glycol part has a molecular weight of 200 to 4. Polyethylene glycol ester monostearate with 00 is also included in its type. Included. Fatty acid esters of monohydric alcohols having at least 4 carbon atoms, e.g. Isobutyl stearate and ethylhexyl stearate are also useful. There is.

Additional auxiliary softeners that can be used are glycerol, diglycerol, and ethylene glycerol. Coal, propylene glycol, diethylene glycol, dipropylene glycol diethylene glycol, polyethylene glycol (molecular weight 200-100, 000), polypropylene glycol (molecular weight 200-100,000), polypropylene glycol (molecular weight 200-100,000), Vinyl alcohol, polyoxyethylene polyoxybrobylene copolymer, polypropylene Ropylene glycol (molecule j1900), glucose methyl ether, butyl di Glycol ether, diethylene glycol monobutyl ether, propylene Recall monoethyl or ethyl ether, ethylene carbonate, propylene carbonate. Ru.

General formula RO (Cn H2n O) t (glucosyl) Kyl, alkylphenyl, hydroxyalkyl, hydroxyalkylphenyl and mixtures thereof, the alkyl chain has 8 to 18 carbon atoms, and t is 0 ~2 and X is 2 to 7) are also useful and described herein. Can be used in compositions. These glucosides exhibit desirable solvent properties and further Benefits such as flexibility can be imparted to the fiber.

Lanolin and derivatives and C16-20 paraffins can be used if desired. constitute another example of a nonionic agent that can be used. Low melting point oils of animal, vegetable or mineral origin are , is representative of this type of substance. Carnation φ oil (Carnatlon) oil), Jijijoba oil (JojobaollR) and sunflower Oil is a specific example that has been found to work.

Another important type of auxiliary softener is the general formula % formula % (In the formula, R1 is a straight chain or branched alkyl or alkenyl group having 8 to 23 carbon atoms. and R2 is hydrogen or an alkyl or hydroxyalkyl group having 1 to 4 carbon atoms. ) is expressed as a substance.

Highly preferred substances of this type are C1 (1"20 saturated fatty acids, especially lauric acid , myristic acid, palmitic acid and stearic acid.

Linear fats such as the LUTENSOLo compound available from BASF fat 08-18 alkanol ethoxylates and extracts available from Exxon Branched C alkanols such as EXXAL compounds are also suitable.

8-18 Clay materials, such as low ion exchange capacity as described in EPA 150.531 You can also use those.

The co-softener is a cationically active amine, i.e., a linear organic group having 12 to 22 carbon atoms. It can be used in combination with at least one primary, secondary and tertiary amine. this Preferred amines of the species are monomers having a total of 2 to 30 ethoxy groups per molecule. Ethoxyamines such as tallow-dibolyethoxyamine. Diamines, e.g. , tallow-N, N', N'-tris(2-hydroxyethyl)-1゜3-propylene propylene diamine, or CI6-18 alkyl-N-bis(2-hydroxyethyl) Chil)amines are also suitable.

Examples of said amines include the trade name GENAMIN C,S by Hoechst. , D and T.

The co-softener is used in a quaternary softener to co-softener ratio of 5:1 to 20:1. be done.

When using fatty acids, the preferred ratio is 821 to 10=1.

Still other optional components for use herein include silicone components, e.g. Those described in National Patent No. 1.549,180, emulsifiers, preservatives, bactericides, Dyes, bactericides, stabilizers, brighteners, opacifiers, photoactivators, sequestering properties Copolymer carboxylates, antifouling agents, bleaching agents, bleach activators, and anti-scratch agents Examples include agents.

Suitable polymeric antifouling agents are disclosed in EP-A 220 156.

These additives are usually added in small amounts in the dilution process of the concentrate, e.g. It is blended at 0.001% to 5%.

The following examples illustrate the invention.

Table 1 Example 1 Example 2 Citalo imidacillin ester 2022 fragrance o, go o, g.

Polydimethylsiloxane 0.2 0.2 Antifouling polymer 0.2 0.2 Citric acid 0.1G, 05 Ca　C120,20,2 Water and trace ingredients balance pH 3% 3.0 The compositions of Examples 1 and 2 were stored at 50°C for 3 weeks and citric acid stored under the same conditions. compared to a similar composition containing no. The compositions of Examples 1 and 2 were compared to the control composition. On the contrary, no fragrance odor was produced.

The following compositions are also prepared.

Table 2 Example 3 Example 4 Example 5 Example 6 Ditalo imidazoline ester 21 22 23 23 Fragrance 0.7 0.7 0.8 0.7 Polydimethylsiloxane 0.2 - 0.2 - Antifouling polymer 0.2 0.2 − − Dequest (Dequest,) 2066★ 0.1 - - -EDTA 2 Sodium salt -0,1- CHELCD★★--Ro, 05- Tartaric acid---0,1 Water and trace ingredients balance pH 3% 3.0 ★Diethylenetriaminepentamethylenephosphonic acid★★trans 1. 2 ji Aminosic hexadiN, N, N', N'tetraacetic acid monohydrate

Claims (7)

[Claims] 1. formula ▲ Contains mathematical formulas, chemical formulas, tables, etc. ▲ (wherein X and X1 are independently C11-C21 hydrocarbyl groups, preferably C 13-C17 alkyl, m and n are independently 2-4, preferably 2 ) of at least 10% by weight of the imidazoline ester softening active ingredient and a pH of 4 or less In a concentrated fabric softening composition containing a Brønsted acid in an amount such that and contains a chelating agent for heavy metal ions in an amount of 0.01% to 1% of the composition. A concentrated fabric softening composition characterized by: 2. Claim wherein the imidazoline ester is a ditallow imidasoline ester. Item 1. The composition according to item 1. 3. The chelating agent is carboxylic acid, polycarboxylic acid, aminocarboxylic acid, polycarboxylic acid, Claimed to be selected from the group of riaminopolyalkylenephosphonic acids, and salts thereof. Item 2. The composition according to item 1 or 2. 4. The chelating agent may include citric acid, EDTA, and diethylene triamine. 4. A composition according to claim 3, selected from the group of pentamethylenephosphonic acids. 5. Claims 1 to 4, wherein the amount of chelating agent is between 0.05% and 0.2%. Composition. 6. Claims 1 to 5, wherein the amount of imidazoline ester is 15% to 25%. Composition of. 7. The composition according to claims 1 to 6, wherein the pH of the composition is 2.5 to 4.