HUT63455A - Liquid textile rinses comprising microemulsified aminosilanes - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to fabric care compositions and to a method for treating textile materials in order to reduce various properties of the fabric, in particular friction between fibers and yarns.

It has long been known to use silicones to soften textiles, that is, to provide lubrication of fibers and yarns so that they move more easily from one another. In addition, numerous publications have been published over the years on the use of organically modified silicones for the treatment of textiles (see U.S. Pat. No. 4,62,878, November 7, 1986; Gee, November 4, 1978; Lane et al. No. 4,800,026 (January 24, 1989; Coffindaffer et al.), No. 4,824,877 (April 25, 1989; Glover et al.), and

U.S. Patent No. 824,890, issued April 25, 1989 to Glover et al. Also interesting is British Patent Application Serial No. 87-29,489 (December 18, 1987; Walbeoff). All of these patents are herein incorporated by reference. The fabrics are usually treated with these types of silicones in the form of aqueous emulsions. Recently, much has been done to apply these aqueous systems in the form of microemulsions. This technique is considered to have two advantages over conventional macroemulsions, namely (1) more stable and (2) less mechanical energy required to make them.

Although the softness of textiles is widely recognized today by hand touch, about 20 years ago dr. Sueo Kawabata and others began to develop textiles by a mechanical approach. Instruments have been designed to measure the small deformation forces characteristic of manual testing of textiles. Although these instruments (commonly known as the Kawabata Development System (Knife)) were designed to test the quality of textiles, they were also used to evaluate the impact of textile handling. At Union, Carbide published two such studies: Sabia, A.J. and Pagluighi, A.M. Textile Chemist and Cororist, Volume 19, Volume 3, page 5, March 1987; and Brandt H.J., Sabia, A.J., and Pagluighi, A.M., Textile Chemist and Colorist, Vol. 21, No. 12, p. 16, December 1989. The measurement of shear force, in particular shear hysteresis, is, in my opinion, a measure of how easily fibers and yarns move together. In this way, the lower the value of shear hysteresis, the better the lubricant.

By reduced fiber-to-fiber / yarn-to-yarn friction (reduced friction between the fibers within the yarn as well as between the bundles of yarns), it is understood in this specification that the fabric exhibits lower shear hysteresis when tested with a KES shear device. While not wishing to be bound by theory, it is believed that reducing the friction between fiber / yarn / yarn during tablecloth drying and ironing provides better spreadability, handling and wrinkle removal due to easier movement of the fibers.

The present invention relates to fabric care compositions comprising a microemulsified amine-functional silicone and a fabric softener. These allow the effective amount of amino-functional silicone called textile to be deposited during fabric care operations, which reduces friction between the fiber and the yarn.

FIELD OF THE INVENTION The present invention relates to microemulsified amine-functional silicone compositions which reduce friction between yarns and yarns. It is another object of the present invention to provide methods of using such microemulsified amine-functional silicone compositions to reduce friction between textiles and fibers / yarns. Preferred compositions are aqueous fabric softeners. These compositions are generally added to the wash or rinse water during the cleaning operation. Preferred compositions are water-based, water-dispersible compositions containing from about 0.05% to about 25%, more preferably from about 0.1% to about 15%, microemulsified amine-functional silicone. The compositions are diluted during washing or rinsing.

Surprisingly, the microemulsified amine-functional silicones (MAFS) used in the liquid fabric softener composition have a synergistic effect with the corresponding macro-emulsified material. In other words, the reduction of fiber-to-fiber / yarn-friction of (MAFSs) is not as good as that of the macroemulsified system, but in a liquid softener composition, the MAFS composition induces a greater reduction in shear hysteresis than a corresponding analog, macroemulsion, liquid textile fabric softener in km position.

The preferred product is an aqueous rinse aid composition comprising a microemulsified amine-functional silicone and a fabric softener, preferably a quaternary amine telxtile softener.

• ·

In a preferred embodiment, about 0.1% to about 10% by weight of microemulsified amine-functional silicone is incorporated into any suitable fabric softener composition previously used in the art for laundry cleaning. The result is a fabric care composition that provides reduced fiber / yarn / friction in treated textiles. Silicone microemulsions

In the past 5 years, several patents have been published in the field of silicone microemulsions (see 4,620,878; 4,705,704;

824 877; U.S. Patent No. 4,824,890). British Patent Application Serial No. 87-29,489 may also be of interest. All of these patents are herein incorporated by reference. Transparent silicone emulsions with an average particle size of less than 0.14 μ are described in these publications. The art teaches that microemulsions have two advantages over conventional macroemulsions: (1) they are more stable and (2) they require less mechanical energy. There is no indication in these publications that these microemulsions, when used in conjunction with a fabric softener, are capable of reducing fiber / fiber and / or yarn / yarn friction, as opposed to macroemulsions. Because microemulsions, when used alone, are less effective than macroemulsions, any assay that logically proceeds from these individual dispersions discourages further testing.

The amine functional silicones discussed herein have an average molecular weight of from about 1000 to about 100,000, preferably from about 1000 to about 50,000, more preferably from about 1500 to about 20,000, and can be prepared by emulsion polymerization of low molecular weight polymers and / or monomers, more preferably low molecular weight polymers. Emulsion polymerization can result in high concentrations of microemulsified silicone.

A preferred composition of the present invention is an aqueous dispersion comprising a microemulsified amine-functional silicone and wherein the weight ratio of the microemulsified amine-functional silicone to the fabric softener is from about 17: 1 to about 1: 350, preferably from about 10: 1 to about 1: 100. More preferably, the weight ratio of microemulsified amine-functional silicone textile softener is from about 1: 1 to 1:10, more preferably from about 1: 5 to 1:10. These compositions are added to the rinse water to reduce the fiber / fiber / yarn-friction and soften the fabric.

Suitable fabric softeners include:

(i) quaternary ammonium compounds;

ii) fatty amine compounds;

iii) fatty amide compounds;

(iv) fatty acids;

(v) fatty alcohols;

(vi) mixtures of these compounds.

The amount of fabric softener in the compositions added to each of the rinse liquids of the present invention may range from about 2% to about 35% by weight, preferably from about 4% to about 27% by weight of the total composition. The lower values refer to the amount required by the household laundry practice to effectively soften the linen when added to the rinse bath. The upper values are suitable for more concentrated liquid products which are either used in smaller amounts or diluted before use.

The microemulsified amine-functional silicone content of such compositions is preferably from about 0.05% to about 40% by weight, preferably from about 0.1% to about 20% by weight; and more preferably from about 0.5% to about 10% by weight of the concentrate.

Suitable fabric softener compounds include quaternary ammonium salts as well as non-quaternary amines and amine salts.

Compositions containing cationic nitrogen compounds in the form of quaternary ammonium salts and substituted imidazolinium salts containing two long acyclic aliphatic hydrocarbon groups have a fabric softening action during the rinsing operation (see, for example, U.S. Pat. No. 3,644,203, 1972).

22 .; Lamberti and others); U.S. Patent No. 4,426,299, issued January 17, 1984 to Verburggen; and R.R. Egan: Cationic Surfactants as Fabric Softeners, Journal of the American Oil Chemists' Society, Jan. 1978, 118-121. pp .; and J.A. Ackerman, How to choose cationics for fabric softeners, Journal of the American Oil Chemists' Society, June 1983, 1166-1169. p. communications).

Other suitable fabric softeners are non-quaternary amides • · * ·

- 8 and non-quaternary amines. Commonly mentioned such materials are the reaction products of higher molecular weight fatty acids with hydroxy, alkylalkylene diamines. Such materials include, for example, higher molecular weight fatty acids and their reaction products with hydroxyethyl ethylenediamine (see HW Eckert, Fette-Seifen, Condensation Products from β-Hydroxyethylenediamine and Fatty Acids). -Anstrichmittel, September 1972, pp. 527-533). These materials are often referred to as fabric softening compositions in combination with other cationic quaternary ammonium salts and imidazolinium salts (see 4,460,485, July 17, 1984; Rapisarda et al.); 4,421,792, December 20, 1983; Rudy et al., U.S. Patent No. 4,327,133 (Apr. 27, 1982; Rudy et al.).

A particularly preferred fabric softener is an aqueous dispersion comprising from about 3% to about 35% by weight of a mixture which:

a) from about 10% to about 92% of the reaction product of a higher molecular weight fatty acid and a polyamine such as hydroxyalkylalkylenediamine, dialkylene triamine, or a mixture thereof; and

b) about 8-90% of a cationic nitrogen salt of a single long acyclic aliphatic hydrocarbon group having from 15 to 22 carbon atoms,

c) about 0% to about 80% of a cationic nitrogen salt containing two or more long acyclic aliphatic hydrocarbon groups having from 15 to 22 carbon atoms, or one and an arylalkyl group having from about 15 to 22 carbon atoms in its alkyl chain.

Some preferred fabric softeners are described in U.S. Patent No. 4,661,269, April 28, 1987 to Trinh / Wahl / Swartley / Hemingway, which is incorporated herein by reference in its entirety.

As used herein, terms such as emollient compound are generally singular and plural unless otherwise indicated.

Preferred carriers are liquids, such as water or mixtures of water and lower C 1-4 monovalent alcohols. The water used can be distilled, deionized and / or tap water. Water and up to 10%, preferably less than 5%, lower alcohol such as ethanol, propanol, isopropanol or butanol and mixtures thereof are also useful carrier liquids. Primarily water based carriers are desirable.

Commercially available quaternary ammonium compound products contain a small amount of lower alcohol. Such products may be used to prepare preferred aqueous compositions of the present invention. In such products, lower alcohols are generally present in an amount of from about 0.5% to about 10% by weight, based on the weight of the aqueous composition. Possible components and preferred embodiments

Compatible excipients may be added to the compositions discussed herein for known purposes. Such excipients may include viscosity regulators, perfumes, emulsifiers, preservatives, antioxidants, antibacterial agents, and the like. ··· ·· ·· ««

- 10 agents, antifungal agents, colorants, dyes, fluorescent dyes, bleaching agents, opacifying agents, antifreeze agents, soiling agents, shrinkage control agents and other agents to facilitate ironing (e.g. starches, etc.). These excipients are employed in the usual amounts when used, generally up to about 5% by weight, based on the weight of the preferred liquid composition.

The viscosity control agents can be organic or inorganic. Organic viscosity control agents include fatty acids and esters, fatty alcohols and water miscible solvents such as lower alcohols. Inorganic viscosity control agents include water-soluble ionizable salts. Many ionizable salts can be used. Suitable salts include halogen salts of metals of Group IA and IIA of the Periodic Table of the Elements, such as calcium chloride, magnesium chloride, sodium chloride, potassium bromide and lithium chloride. Calcium chloride is preferred. The ionizable salts are particularly useful for mixing the components, preparing liquid compositions, and subsequently adjusting the desired viscosity. The amount of ionizable salts used will depend upon the amount of active components used in such compositions and may be selected according to the preference of the formulator. The amount of salt used to control the viscosity of the composition is from about 20 to about 6,000 parts per million by weight of the composition, preferably from about 20 to about 4,000 parts per million.

Usually polymeric material for soil removers • · · 4 ··· · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

11 is desirably employed in an amount of from about 0.1% to about 5%. Suitable soap removers are described in Gosselink, 4,702,857 (Oct. 27, 1987); 4,711,730 (Dec. 8, 1987; Gosselink and Diehl); U.S. Patent No. 4,713,194 issued December 15, 1987 to Gosselink. Mixtures thereof are also suitable. These patents are herein incorporated by reference. Other soiling removal polymers are described in U.S. Pat. No. 4,749,596 (June 7, 1988; Evans, Huntington, Stewart, Wolf, and Zimmerer); 3,928,213 (December 23, 1975; Temple, Heuring and Prentice); 4,136,038 (January 23, 1979; Pracht and Burns); and U.S. Pat. No. 4,661,267 (Apr. 28, 1987; Dekker, Konig, Straathof, and Gosselnik), incorporated herein by reference.

Typical amounts of compatible antibacterial agents used in the present compositions are from about 1 to about 1500 parts per million by weight of the composition.

Examples of antioxidants that can be added to the compositions of the present invention include propyl gallate, marketed as Eastox Chemical Products, Inc. under the tradename Tenox® PG Tenox S1, and butylated hydroxytoluene available from UOP Process Division under the tradename Sustane® HT. .

The compositions may also contain other silicone fluids which provide additional product benefits, such as a more comfortable fabric feel. Preferred auxiliary silicones are polydimethylsiloxanes having a viscosity of from about 100 to about 100,000 centistokes (cs), preferably from about 200 to about 60,000. These Λ Λ · «« · · · · · ·

The auxiliary silicones 12 may be used alone or added to emollient compositions in an emulsified form available from the distributor. Examples of such pre-emulsified silicones are the trademarked Dow-Corning 1157, available from Dow-Corning, having a viscosity of 350% and containing 60% poly (dimethylsiloxane).

Fluid®, and Generals

Available from Electric Company, Trademarked Generals

Electric SM 2140® Silicones. The silicone component may optionally be used in an amount of from about 0.1% to about 6% by weight of the composition.

A preferred composition is about 1 to 1000 parts per million of bactericidal material, about 0.2 to 2% fragrance, about 0 to 3 polydimethylsiloxyanane, about 0 to 0.4% calcium chloride, about 10 to 100 parts per million, and containing about 0 to 10% of lower alcohol based on the total weight of the composition.

The pH of the preferred composition of the present invention is adjusted to between about 2 and about 11, preferably between about 2 and about 8. The pH adjustment is generally accomplished by adding a small amount of free acid or base. Any acidic material may be used; its selection is made by one of ordinary skill in the softener industry based on cost, availability, and safety factors. Any suitable acid may be used to adjust the pH. Hydrochloric acid, sulfuric acid, phosphoric acid or formic acid are preferably used. Likewise, any suitable alkali can be used for pH adjustment, for example sodium hydroxide. For purposes of the present invention, the pH of the emollient composition is measured by a combination of a glass electrode and a calomel electrode.

• · * · 4 4 · · · «· ··· · ·····································•

The compositions of the invention may be prepared by a variety of methods. Some of these suitable and satisfactory methods are described in the following non-limiting examples.

Unless otherwise indicated, all parts, percentages, and ratios herein are by weight, percent by weight, and by weight.

Example 1

Procedure A)

A micro-emulsified amine-crosslinkable silicone liquid fabric softener composition is prepared as follows. About 4.33 parts di (hydrogenated tallow) dimethylammonium chloride (DTDMAC), about 1.00 parts methyl 1-tallowamidoethyl 2-tallowimidazolinium methyl sulfate, and about 0.025 parts 1% Dye solution is weighed into a premix mixer.

The premix is heated to 75 ° C with stirring and then stirred while stirring at 44 ° C containing about 88.14 parts of distilled water and about 0.025 parts of antioxidant solution. The final mixture is then cooled to about 21 ° C, and about 7.15 parts of about 14% silicone amine-functional silicone microemulsion is added with stirring.

Procedure B)

Proceed as in Procedure A, except that the amine-functional silicone microemulsion was used before

- Stir into the final mixture before cooling to 21 ° C.

TABLE I

Component A) and B) wt%

DTDMAC ¹ 4.33 Methyl 1-tallow amidotheyl-2-tallow imidazolidinium methyl sulfate 1.00 alcohol (active) 0.80 fragrance0.45 dye solution ⁴ 0.025 microemulsified amine-functional silicone ^{2 3} 7.15 antioxidant0.025 distilled water86.12 ^l di (hydrogenated tallow) dimethylammonium chloride ^ώ special X2-8406 aqueous microemulsion, Dow-Corning

Company Brand ³ Tenox Sl Type, Eastman Kodak Company ⁴ Polar Brilliant Blue 1% Solution

II. example

A microemulsified amine-functional silicone and fabric softening composition is prepared according to method A). The approximate amount of the components is: 2.00 parts Maxamid 6, 0.80 parts MTTMAC, 4.03 parts DTDMAC (the above compound), 1.00 parts of the imidazolidinium salt of Example I, 0.42 parts ♦ · * 4 * perfume, 1.28 parts alcohol (active), 10.0 parts 14% microemulsified amine-functional silicone, other distilled water. For the ingredients and method of preparation see Table II.

See Table I and Example I.

III. example

A microemulsified amine-functional silicone and fabric softening composition is prepared according to method A). The approximate amount of the components is as follows: 17.50 parts Mazamide 6, 6.50 parts DTDMAC, 1.32 parts perfume, 2.07 parts alcohol (active), 12.00 parts% 4% microemulsified amine-functional silicone, and the rest water. See Method II for the production method. See Table I and Example I.

II. SPREADSHEET

Component II. Example III. example kb-wt% kb-wt%

Mazamide 6 ⁴ 2.00 17.50 MTTMAC ² 0.80 - DTDMAC ² 4.03 6.53 perfume 0.42 1.32 Polar Brillant Blue dye solutions 0,025 0,072 alcohol (active) 1.28 2.07 microemulsified amine function silicone ⁴ 10.00 12.00 distilled water the rest the rest

moles hydrogenated tallow fatty acid 1 mole Ν-2-hydroxy

reaction product with ethylenediamine ^z mono (hydrogenated tallow) trimethylammonium chloride (MTTMAC) ³ di (hydrogenated tallow) dimethylammonium chloride ⁴ Dow-Corning X2-8406 (see above).

arc. example

Comparison of the effects of Q2-7224 (Q2-8075 macroemulsion containing 35% silicone) and X2-8406 (Q2-8075 microemulsion containing 14% silicone). 9.34 g of Q2-7224 and 23.35 g of X2-8406 were used in fabric softeners added to the rinse liquid to treat 65% / 35% synthetic / cotton fabrics (the active ingredient content of the rinse liquid was about 50 parts per million). The fabrics were treated with a climbing step (without detergent) / rinsing / drying step. After each treatment, shear hysteresis measurements were performed on four fabrics. The following results show that Q2-7224 is a better fabric softener system for reducing fiber-to-fiber / yarn-friction.

III. SPREADSHEET

Average shear hysteresis (g force / cm) at 2 l / 2 °

With 400 g of force

X2-8406

Q2-7224

1.53

1.35

Paired t-test calculations show significant> 95% confidence.

·· · 4 · · · ··· ····························································•

- 17 Example V

Product C

A microemulsified amine-functional silicone and fabric softener composition is prepared according to method A). The ingredients are as follows: 3.75 parts DTDMAC, 3.40 parts imidazoline, 0.57 parts MTTMAC, 0.40 parts perfume, 0.025 parts colorant, 0.77 parts alcohol (active), 0.4-0, 9 parts hydrochloric acid, 7.15 parts MAFS (14%), and the rest distilled water. This composition contains about 1% amine-functional silicone fluid.

Comparative product D

A fabric softener composition is prepared in the same manner as for product C except that about 3.03 parts of 33% silicone-containing amine-functional silicone macroemulsion is added. This composition contains about 1% amine-functional silicone fluid.

Refer to Table V and Components of Product C and D. Both C and D contain about 1% Q2-8075 amine-functional silicone fluid.

Products C and D were used to soften 65% / 35% synthetic / cotton fabrics for rinse aid. The fabrics were treated with a single wash / rinse / dry operation.

TIDE® and Liquid TIDE® detergents were used.

Hat (DOWNT®,

In the case of DOWNY plus X2-8406 and DOWNY plus Q2-7224) the composition contained only TIDE, in 6 cases (DOWNY plus X2-8406 and DOWNY plus Q2-7224) the composition contained only Liquid TIDE. A Liquid • 4

- 18 TIDE and TIDE-washed fabrics were stored separately and subjected to shear hysteresis measurement. The following results show that the X2-8406 fabric softener composition is a better composition for reducing shear hysteresis than the corresponding Q2-8075 composition.

ARC. SPREADSHEET

Average shear hysteresis (g force / cm) at 1 l / 2 ° and 400 g force

DOWNY® / - DOWNY®DOWNY® Q2-7224 X2-8406

TIDE wash 0.69 0.71 0.65 (the) liquid TIDE wash 0.88 0.78 0.75 (B) average 0.79 0.74 0.71 (C)

a) Significantly (> 95% confidence) less than DOWNY + Q2-7224 (in paired comparison).

b) Significantly (> 7% confidence) less than DOWNYQ2-7224 composition. Significantly (> 95% confidence) less than DOWNY.

c) Significantly (> 95% confidence) less than DOWNYQ27224 composition.

component

TABLE V

Example V

Product C Product D kb-i% by weight kb-i by weight

MTTMAC ¹

DTDMAC ^{2 *} Imidazolidine ⁵

Polar Brillant Blue Dye Solution Alcohol (Active)

0.57 0.57 3.75 3.75 3.40 3.40

0.025 0.025

0.77 0.77 Microemulsified Amine Functional Silicone ⁴ (14%) 7.15 Macroemulsified Amine Functional Silicone ⁵ - 3.03 Hydrochloric Acid (31.5%)

0.4-0.9 distilled water the rest of the other ¹ mono (hydrogenated tallow) -trimethylammonium chloride di (hydrogenated tallow) -dimethylammonium chloride ^J 1-hydrogenated tallow amidoethyl-2-hydrogenated tallow- imidazoline ⁴ Dow-Corning X2-8406 (described below) ⁵ Dow-Corning Q2-7224, a macroemulsifier analogous to microemulsified X2-8406, which also contains Dow-Corning Q2-8075 silicone fluid.

Microemulsified amine-functional silicone liquid fabric

Claims (10)

1) a microemulsified amine-functional silicone for enhanced reduction of fiber / fiber / yarn friction; A liquid textile nutritional composition, characterized in that: The fabric care composition of claim 1, wherein said microemulsified amine-functional silicone comprises from about 0.05% to about 25% by weight, preferably from about 0.1% to about 15%, more preferably from about 0.5% to about 10% by weight. 2) an effective amount of fabric softener; and A fabric care composition according to claim 1 or 2, characterized in that: a) a microemulsified amine-functional silicone having an average molecular weight of about 1000-100,000; b) from about 2% by weight, preferably from about 3% to about 35% by weight of the fabric softener, based on the total weight of the composition; wherein the weight ratio of microemulsified amine-functional silicone to fabric softener ranges from about 17: 1 to about 1: 350. 3) a carrier suitable for receiving components 1) and 2). A fabric care composition according to any one of the preceding claims, characterized in that said microemulsified amine-functional silicone has a weight ratio to said fabric softener of from about 10: 1 to about 1: 100. preferably from about 1: 1 to 1:10, more preferably from about 1: 5 to 1:10. A fabric care composition according to any one of the preceding claims, wherein said microemulsified amine-functional silicone has an average molecular weight of from about 1000 to 100,000, preferably from about 1000 to 50,000, more preferably from about 1500 to 20,000, and has a lower molecular weight. silicone polymers, silicone monomers or mixtures thereof, preferably emulsion polymerization of lower molecular weight silicone polymers. A fabric care composition according to any one of the preceding claims, characterized in that said fabric softener is one of: i) a quaternary ammonium compound; (ii) a fatty amine fabric softener; iii) a fatty amide compound; iv) fatty acid; (v) fatty alcohols; or (vi) mixtures thereof. A fabric care composition according to any one of the preceding claims, characterized in that said fabric softener comprises a quaternary ammonium compound, preferably a mixture of amide, amine and quaternary ammonium compound. 8. A fabric care composition according to any one of claims 1 to 5, characterized in that said fabric softener comprises an amine compound. Liquid fabric care composition according to any one of the preceding claims, characterized in that the suitable carrier material is primarily water and the content of the fabric softener is from about 4% to about 27%. A method for reducing friction between fiber / yarn of treated fabrics comprising treating said fabric with an effective amount of a water-diluted composition according to any one of the preceding claims.