CS274338B3 - Brightening agent with antistatic and softening effect - Google Patents

Abstract

The solution concerns a fabric softener containing from 5 to 15 percent by weight of cationic tenside and amine salt of fatty acid in weight ratio of 100:0.5 to 20:2 to 8, which creates a stable and homogeneous dispersion in water. The cationic tenside used is quaternary ammonium salt of general formula I, the amphoteric tenside used is betaine of general formula II and amine salt of general formula III. The fabric softener shows according to the author's certificate number 238 562 antistatic, softening and antimicrobial effects, and simultaneously functions dermatologically positively.<IMAGE>

Description

The invention relates to a fabric softener having an antistotistic and softening effect according to the basic invention protected by the author's certificate No. 238 562,

Fabric softeners are used to improve the utility properties of natural fiber fabrics, synthetic fibers, and mixtures thereof. They are applied after washing and thorough removal of anionic surfactant residues in the last rinse water.

The fabric softeners currently used contain usually a quaternary ammonium compound characterized by an antistatic and softening effect. They usually still contain a non-ionic surfactant, an antifoam, an optical brightener, a colorant and a perfume.

Quaternary salts are generally used as dimethyldistearoylammonium salts, substituted imidazoline salts, alkyltrimethylammonium or alkylbenzylammonium salts. The longer the chains are, the better the softening effect is. Strings must be straight, unbranched and fully saturated. Unsaturated fatty residues, such as oleic acid radicals, have little softening effects. Furthermore, the emollient must contain a true cationic group which ensures good adhesion of the composition to the fabric to be treated.

The fabric softener with antistatic and softening effect protected by the author's certificate No. 238 562 contains as active ingredient quaternary acylpoglycolyltrialkylammonium salt of the formula I in an amount of 1 to 26% by weight.

R ¹

R ³

CH - 0¾) - R _ _R ² R 4

X

2 wherein R is C 7 -C 19 alkyl, R is hydrogen or methyl, R ³ C 1 -C 4 alkyl, R ^{4 is} methyl or ethyl, X is methoxy sulfonyloxy or ethoxy sulfonyloxy and n is a natural number of 1 to 4. Fabric softener the composition is readily prepared by stirring the quaternary salt at 30 to 80 ° C in water.

Quaternary ammonium salts have, besides their excellent utility properties, a number of disadvantages, in particular laborious preparation of dispersions, low dispersion stability, which are influenced by such factors as hardness and salinity of water, difficult filling of products into commercial packaging, strong foaming of solutions and limited possibility of their neionogonnimi and ammonium surfactants,

Nonionic surfactants and especially amphoteric surfactants strongly reduce the viscosity of quaternary ammonium salts and thereby disperse dispersions.

CS 274 338 £ 3

The above-mentioned disadvantages are eliminated by a fabric softener having an antistatic and softening effect according to the author's certificate No. 238 562 based on a quaternary acyl polyglycol alkyltrialkylammonium salt of the formula I,

Rt - ΰφ CH - CH- - N ⁺ - R 'X' i ^c t *

CH,

I ³

R - N ⁺ - CH-COO ”/ ² CHAMPHOTHER surfactants of formula II,

(II) wherein R is a C až-C alkyl alkyl group and an amine salt of a higher fatty acid of formula (III),

R "

R.-COO-NH-R-OH

AND

Wherein R kde denotes an alkyl radical of 14 to 20 carbon atoms, Rp denotes an alkyl or hydroxyalkyl radical having 1 to 2 carbon atoms, Rp denotes an alkyl radical having 1 to 2 carbon atoms, the weight ratio of cation. surfactants of formula I, amphoteric surfactants of formula II, and amine. the higher fatty acid salt of formula III is 100: 0.5 to 20: 2 to 8. The fabric softener composition comprises 5 to 15 wt. mixtures of surfactants of formulas I, II, III.

An advantage of the fabric softener composition of the present invention, which produces a nacreous crystalline dispersion of quaternary ammonium salt in water, is its high dispersion stability due to the presence of a higher fatty acid amine salt which strongly increases the viscosity of the quaternary ammonium salt even in the presence of nonionic or amphoteric surfactants.

The amine salt of the higher bridge acid partially forms a complex precipitate with the cationic surfactant, thereby not affecting the later stability of the cationic surfactant dispersion.

Preparation of a cationic surfactant dispersion for commercial packaging is very simple. There is no need to prepare a dispersion of surfactants which at a concentration of 5 to 15% by weight has a viscosity of 300 to 800 mPa.s, but is preferably filled as a solution already at a temperature of 30 to 40 ° C when the viscosity of the solution is about 150 mPa.s. The fabric softener composition thus filled in the form of a solution spontaneously crystallizes in the form of a homogeneous and stable crystalline polymer dispersion.

We have found that quaternary ammonium salts in the presence of amine soap can be combined with amphoteric surfactants to achieve very good dermatological

CS 274 338 B3 properties of the preparation, high antistatic activity and entimicrobial effects of the preparation.

A 0.5% amphoteric surfactant composition per cationic surfactant will reduce or eliminate the addition of a nonionic surfactant to be added to suppress the hydrophobic effects of the cationic surfactants. up to 10 times the concentration of amphoteric surfactant.

In the formulation according to the invention, unlike the basic invention, a combination of a cationic surfactant with an amine salt of a higher fatty acid is also very advantageous, saving the use of antifoams which are commonly used in quaternary ammonium salts.

The quaternary ammonium salts have an acidic character and their application solutions have a pH of 3 to 6. In this acidic area, the amphoteric surfactants have the character of cationic surfactants with antistatic and softening action. They do not reduce but increase the antimicrobial effects of cationic surfactants, which are their general properties.

In contrast to the basic invention, the inventive composition has antimicrobial effects, which is beneficial in the treatment of chemical fiber textiles, especially those which are washed and ironed at low temperatures and which cannot be produced.

The fabric softener also has an inhibitory effect, in particular on Gram-negative Pseudonomas aerugynose bars, which are the most common contaminants of cosmetic and personal care products.

□ strains were used as test organisms to detect antimicrobial effects of the product:

Escherichia coli, Pseudonomss aerugynos, Bacillus substilis, Staphylococus aureus, Candida albicans and Aspergillus niger.

Antimicrobial effects were determined by diffusion method. Suspensions in saline were prepared from 24-hour microbial cultures (or 48 hours of Candilla cultures and Aspergillus spores) and added to 100 ml of heated and cooled to 45 ° C masopepton or sweetener agar broth. The contaminated soils were dispensed into petri dishes and, after solidification, pits were cut in the soil with a cork borer - 4 in each plate, into which samples were applied in application dilution, i.e. 0.2 g / 100% fabric softener. After incubation in a thermostat at 37 ° C for 24 hours, the presence of inhibitory zones in the vicinity of the mine was detected. All the used testoorganisms were found to be clearly antimicrobial, resp. antifungal effect, although the application solution at a concentration of 0.2 g / l of 100% fabric softener is poCS 274 338 B3 hunting concentration than is normally applied.

The surface resistance of the preparation according to the invention was determined on a teraohmmeter according to ČSN 80 0059.

□ as the base fabric:

PADh (CSN 80 0103)

PESs (ČSN 80 0101) where R than 10 ^ ⁹ _o wt

The measurements were performed under these climatic conditions; temperature 20 + - 1 ° C relative humidity 40 ± 2%

A fabric concentration of 0.4 g of 100% active ingredient per liter was used to treat the textile. The preparation contained 13.5% of active substances, namely cationic surfactant, amphoteric surfactant and aminone soap in a weight ratio of 100: 3: 7. The sulfate, amphoteric surfactant used was stearylalkyl betaine and the triethanolamine salt of stearic acid. Surface resistance measurements were performed on freshly prepared product and after 5 months and one year of storage. The following values were measured:

PADh PESs

fresh product 3.1.10 ¹⁰ ohm G 1,2.10 ohm 6 months warehouse, ready 4,3.1O ^1O ohm q 1,7.10 ohm 12 months 4.4.1O ^ ° ohm 2,2.1O ⁹ ohm

The enclosed tests show that partial precipitation of the cationic surfactant by amine soap upon prolonged storage of the formulation affects its antistatic activity only slightly. There is no objective standard for evaluating the softening effect. The emollient effect is evaluated subjectively by group 5.

Claims (2)

1. Anti-static and softening agent according to the author's certificate No. 238 562 based on quaternary acyl polyglycol alkyltrialkylammonium salt of the general formula I, R; - cc CH - ch ₂ J _i K ⁺ - χ - I CS 274 338 B3 characterized in that it contains an amphoteric surfactant of the general formula II, CHI - ⁵ E - N ⁺ - CH ₂ COO ' II. XII> wherein R is a C 12 -C 20 alkyl radical and an amine salt of a higher fatty acid of formula III, -? 2 R.-COO'-NH-R-OH ¹ 3 r ₂ wherein R 1 represents an alkyl radical of 14 to 20 carbon atoms, R g represents an alkyl or hydroxyalkyl of 1 to 2 carbon atoms, R g represents an alkyl radical of 1 to 2 carbon atoms The weight ratio of the cationic surfactants of formula I, the amphoteric surfactants of formula II and the amine salt of the higher fatty acid of formula III is 100: 0.5 to 20: 2 to 8. 2. Fabric softener according to claim 1, characterized in that it contains from 5 to 15 wt. mixtures of surfactants of formulas I, II, III.