Composition for dyeing aramid fibrous materials


D06P1/667 -
D06P1/08 - cationic azo dyes

 

(57) Abstract:

The invention relates to the field of dyeing and final finishing of textile resistant to thermooxidation of high-strength materials protective clothing and can be implemented in textile finishing plants. The technical result of the proposed solutions is to eliminate these disadvantages, such as increased resistance to thermal oxidation and physico-mechanical properties of the fiber while maintaining the uniform and intense colors wide color gamut due to the use of intensifiers alkylphosphates sodium in the composition of the individual dyes and mixtures thereof. This goal is achieved by the fact that as intensifier composition contains alkylphosphate sodium General formula ROPO3Na2where R is an alkyl radical WITH3H7- WITH4H9- WITH5H11- WITH6H13- WITH7H15- C8H17- if the following composition, g/l: cationic dye is 0.1-0.5; alkylphosphate sodium 0,5-2,0; water the rest. table 1.

The invention relates to the field of dyeing and final finishing of textile resistant to thermooxidation high-strength material is a composition for dyeing and finishing termignoni aramid materials, for example, the fabric article “Hope” on the basis of polyamides - imidazoline (PBI) fibers that are listed in the description of the A. C. of the USSR №1765269 A1 [Gromov C. F., Fedorova N. With. Composition for pigment dyeing of cellulose-containing materials. - A. S. No. 1765269 A1, (46) 30.09.92. Bull. No. 36. C. 12], which includes a latex of a copolymer of vinylidenechloride with butadiene in a weight ratio of monomers of 70:30, or a latex of a copolymer of vinylidenechloride with vinyl chloride 65:35 or 80:20, respectively, or their mixture at a ratio of 1:1; polyethylene emulsion; antimigratory based manutex RS or a mixture of starch with salvitti, surfactant of Prevotella WOF 100 or lakanal and the water dispersion of pigment dye. The proposed formulations allow you to get a solid color only when dyeing in light colors that match the content of the colorant in the impregnating suspension of 0.1-0.3% (1-3 g/l), with increasing intensity of coloration to the midrange tones, increasing the concentration of pigment in suspension above 0.3% color fastness is sharply reduced. In addition, the impregnating suspension is not sustainable, in terms of production leads to the accumulation of coagulum on the surface of the impregnating rollers and, consequently, uneven dyeing of the material. Naigani sustainability, to thermooxidative degradation of the fiber compared to the level of these properties of the original materials.

The closest analogue to the proposed technical solution is a composition for dyeing fibrous materials from polyheteroarylenes [Dankova T. Yu, Michael A. P. and other Composition for dyeing materials based on aromatic heterocyclic fibers. Pat. 2158793. IPC7D 06 P 1/08, 1/62. Bull. No. 31, 2000] of the aqueous solution of the cationic dye in the presence of the intensifier and acetic acid. As the intensifier proposed use of sodium alkyl sulphates: C12H25OSO3Na, or C15H31OSO3Na, or C16H33OSO3Na. The composition of the dye bath includes, g/l water: the cationic dye is 0.1-0.5; alkylsulfate sodium 0.5 to 2; acetic acid 2-5. The composition achieves a uniform and intense colors wide color gamut, improved hygienic characteristics, the application of the dyeing compositions of solutions that meet the environmental requirements while maintaining mechanical and fire retardant properties of the fibrous material of polyheteroarylenes relatively unstained sample.

The disadvantage is the tee to thermo-oxidative degradation. In addition, the high content of acid in the dye solution (2-5 g/l) in treatment at 100C for 30 min causes the hydrolysis of aromatic polyamide, the destruction of the polymer fiber.

The technical result of the proposed solutions is to eliminate these disadvantages, such as increased resistance to thermal oxidation and physico-mechanical properties of the fiber while maintaining the uniform and intense colors wide color gamut due to the use of intensifiers alkylphosphates sodium in the composition of the individual dyes and mixtures thereof.

This goal is achieved by the fact that as an intensifier when dyeing with cationic dyes from aqueous solutions using alkyl-phosphates of sodium:3H7ORO3Na4H9ORO3PA2WITH5H11ORO3PA2WITH6H13ORO3PA2WITH7H15ORO3PA2WITH8H17ORO3PA2. The composition of the dye bath includes, g/l:

The cationic dye is 0.1-0.5

Alkylphosphate sodium 0,5-2,0

Water the Rest

Module baths - 200. Fibrous aramid material abrasivejet getting smooth colors medium and dark tones on aramid, including heterocyclic, fibrous material of medium and dark tones, resistant to wet processing and dry friction while achieving higher levels of physical and mechanical properties, resistance to thermal oxidative degradation and observance of sanitary-hygienic and ecological requirements (at the level of the prototype). As in the prototype, when dyeing fibrous materials of polyheteroarylenes in color "Khaki" can be used to dye brilliant green. The desired tint is obtained by blending the color characteristics of the dye and fiber, with natural yellow-brown color. Used dye is used in medicine (oasis) for decontamination of injured skin, which is especially important for clothing to protect them from bullet wounds and injuries. To obtain rawsonrenowned colors on prototipo you want to use cationic dye blue in the amount of About 1 g/l and sodium dodecyl sulphate C12H25OSO3Na - 2 g/l in the presence of acetic acid 5 g/l, which corresponds to the value of the function Gurevich-Kubelka-Munch, characterizing the intensity of the color of 2.91 in; we offer the recipe at the same colectica from the prototype using alkylphosphate sodium as an intensifier of the process of dyeing aramid material does not require the use of an acid agent acetic acid, what contributes to the improvement of physico-mechanical properties of the dyed fabric RAS in 5-22% in comparison with the source material. The onset temperature of thermal oxidation of the painted material increases in 30-40S, while the mass loss of the polymer is reduced by 2-3% compared with the unstained sample, tested in the same mode (heating rate in air 10 ° C /min), indicating that the increase in the resistance of aramid material to thermal oxidation. The use of alkylphosphates sodium can improve the color fastness to soap-soda solution and dry friction in comparison with the prototype with 4 to 5 points. The obtained coloring using alkylphosphates sodium in the absence of acid are characterized by regularity, there is a leveling of natural shade variation and heterogeneity of the thread structure, constituting the distinctive feature of aramid heterocyclic fibers and manifested in the form of "serristori" and "banding" fabric or melangiste yarn. A distinctive feature of the proposed structure is to give a material superior performance properties, as well as the exception of components that are dangerous for health personnel dyeing equipment C3H7ORO3PA2WITH4H9ORO3PA2widely used as antistatic agents [Patent of Russia 1639001]. Used alkylphosphate sodium environmentally safe and are part of the processing baths in low concentrations (0.5-2.0 g/l). Synthesis of alkylphosphates sodium can be carried out by well-known methods in the chemical station finishing production or chemical laboratory, as the reaction proceeds without the emission of harmful substances, is simple technology and equipment design.

For comparison, the technical level of quality staining and basic operating characteristics (tensile strength and elongation at break) the table shows the test data and the machining conditions corresponding to the proposed technical solution (examples 4-6, 9-11, 13), and prototype (examples 1-3).

The essence of the technical solutions disclosed in the examples.

Example 1 (prototype). Prepare dye solution composition, g/l:

The cationic dye pink 2C 0,5

Sodium dodecyl sulfate12H25S3PA 2,0

Acetic acid 5,0

Water (200 MB) 992,0

MB - 200. Hank comprehensive nor is Oh with water and dried.

Example 2 (Prototype). Paint sample (0.5 g), tissue from the fiber Tulen (code: “Hope”) cationic dye pink 2C in the presence of the intensifier alkylsulfate C15H31OSO3Na (2 g/l). Other processing conditions correspond to example 1.

Example 3 (Prototype). Paint sample (0.5 g) yarn from fiber Terlon dye, brilliant green, as the intensifier use alkylsulfate15H33S3PA (2 g/l). Other processing conditions correspond to example 1.

Below are examples 4-6, 9-11, 13 the implementation of the proposed technical solutions and analysis of its effectiveness.

Examples 4-6 (optimal conditions). Prepare 100 ml of dye solution composition, g/l:

The cationic dye

pink 2C 0,5

Interpostal sodium

WITH5H11ORO3PA20,5-2,0

The rest is water (200 MB)

Other processing conditions correspond to example 1.

Example 10. Paint sample (0.5 g), tissue from the fiber Tulen (code: “Hope”) cationic dye pink 2C in the presence of an intensifier of octylphosphine sodium8H17ORO3PA2(2 g/l). Other processing conditions correspond to note is the quality of intensifier use ActiveState8H17ORO3PA2(2 g/l). Other processing conditions correspond to example 1.

In examples 4, 7, 8 indicators of intensity of staining, confirming the optimal concentrations of alkylphosphate sodium in solution. At concentrations greater than 2 g/l, the intensity of staining (example 8) corresponds to the intensity of staining of the sample when using octylphosphine sodium in the amount of 2 g/l (example 6), i.e., the excess concentration of the intensifier above the upper concentration limit does not increase the intensity of the color. The decrease in the concentration of the intensifier below 0.5 g/l (example 7) does not provide the content of the dye nawaloka corresponding to the lower threshold of sensitivity of the eye to the color contrast of unstained sample aramid fiber,

In examples 9, 10 shows the use of alkylphosphates with long hydrocarbon radical from C3to C8. Values of the function GCF, intensity of color, reach values of 2.5 and 6.5, respectively, for cases dyeing yarn synthetic dye brand Blue and tissue Tulen Pink 2C. When using alkylphosphates higher molecular weight decreases significantly races is isomolecular (less than three carbon atoms) alkylphosphate sodium use is impractical because their synthesis is associated with the use of toxic and volatile alcohols.

Examples 6, 9, 10, 11, and 13 illustrate the effect of increasing the physico-mechanical strength aramid fibers compared to the prototype (examples 1-3). The increase in strength is 5-22%, respectively, in examples 8, 9.

In examples 4-6 shows that in comparison with the prototype (example 1) strength of color increased by 1 point.

The differential thermal analysis obtained derivatograph “R. and P. Erdeys” samples filament yarn Tulen, SVM and yarn Terlon, painted in optimal conditions, show that the resistance to thermooxidative degradation increased as compared with the unpainted and painted the prototype fiber. The temperature of the beginning of decomposition of the original and painted prototype samples (examples 1-3) are approximately the same and are, respectively, 470, 482 and 500 ° C (heating in air at a speed of 5 ° C/min). The temperature of the beginning of decomposition of the samples dyed in the presence of alkylphosphates sodium (examples 4-6) - 512, 515 and S.

Test the color fastness to physico-chemical stresses were determined according to the standards: GOST 9733.0-83 - GOST 9733.27-83.

Breaking load determined according to the th simultaneous difference in color and brightness in the system, Vysotskogo [Kirillov, S. A. Chromatics, M - 1987].

The intensity of staining was evaluated by the value function GCF (Gurevich-Kubelka-Munch) and expected values of the reflection coefficients, which were determined on the device math-56 in accordance with GOST 18054-72.

Composition for dyeing aramid fibrous materials consisting of an aqueous solution of the cationic dye and the intensifier - sodium salt of alkyl derivatives of mineral acids, characterized in that as an intensifier contains alkylphosphate sodium General formula ROPO3Na2where R is an alkyl radical WITH3H7- WITH4H9- WITH5H11- WITH6H13- C7H15- C8H17- if the following composition, g/l:

The cationic dye is 0.1-0.5

Alkylphosphate sodium 0,5-2,0

Water The Rest

 

Same patents:

The invention relates to a method for producing a colored heat - and fire-resistant aramid fibers used for manufacturing protective clothing

The invention relates to the field of art and color design of textile products by means of low-temperature hand-painted (cold batik) and fotofilmes
The invention relates to dyeing and finishing production, in particular to a method of dyeing silk or mix it with cotton with direct dyes without the use of electrolyte

The invention relates to the textile industry and can be implemented in the production termignoni high strength fibrous materials based on aromatic heterocyclic polymers (PGA) with high hygienic characteristics

FIELD: textile industry.

SUBSTANCE: invention relates to technology of fabricating dyed polyaramide fiber, in particular to a method of dyeing metha-para-aramidebenzimidazole fibers to be employed in textile industry. Method comprises preliminary treatment with mixture containing solvent selected from dimethylacetamide, dimethylformamide, dimethylsulfoxide, and their mixture, and neutral agent selected from water, lower alcohol, and their mixture, at volume ratio of the two mixture components between 10:90 and 90:10, at 18-20°C for 5 to 60 min followed by (optional) washing and dyeing with disperse or cationic dyes in periodical mode at 95-100°C.

EFFECT: achieved uniform and intensive colorations resistant to washing and wet rubbing, dry-cleaning, water, and perspiration without loss in high physico-mechanical and fireproofing properties of dyed material.

5 cl, 1 tbl, 15 ex

FIELD: chemistry.

SUBSTANCE: invention relates to field of technology for obtaining dyed thermo- and fireproof aramid fibres and can be applied at textile decoration enterprises. Described is method for dying aramid fibre, which consists in preliminary processing of fibre in bath of composition, wt %: gelatin - 20-25, complex aluminium oxide based salt - 1-3, acetic acid - 3-4, water - the remaining part, after that aramid fibre is dyed with acid dyes in bath of composition, wt %: acid dye - 2.5-10, acetic acid - 3-4, water - the remaining part.

EFFECT: claimed method allows obtaining of even and intensive colours of wide colour gamut, resistant to washing and friction with saving of high physico-mechanical properties; in addition, method allows increasing of oxygen index and improving of work environment due to exclusion of toxic substances.

2 cl, 2 tbl, 18 ex

FIELD: textile, paper.

SUBSTANCE: invention relates to the textile industry and can be implemented at dye-finishing factories. A formula is suggested to be used for dyeing aromatic heterocyclic fiber material and containing, wt %: 5-20 pigment selected fron the group including TiO2, 2[Na2O·Al2O3·3SiO2]·Na2S4, CoO·7.9Al2O3·0.5ZnO·0.13P2O5, CdS·(0.5-0.6)CdSe, CdS·(0.2-0.3)ZnS, 25-30 binding material which is a product of copolycondensation in equal portions of acrylonitrile, butyl acrylate and methacrylic acid, water and the rest.

EFFECT: aromatic heterocyclic fiber material which is more resistant to thermal oxidation and breaking load and at the same time increased fire-resistance as well as uniform and high colours of a wide colour range owing to using evironmentally friendly compounds suitable for using at textile finishing factories.

1 cl, 2 tbl, 13 ex

FIELD: textile, paper.

SUBSTANCE: proposed composition for ink-jet printing on nonwoven textile material made of polyamide fibre contains 0.05-0.5 g/l of acid dye, 24-32 g/l carboxymethylcellulose, 70-100 g/l ammonium sulphate, 2-4 g/l of surface-active agent and the rest of water.

EFFECT: composition enables to increase the intensity of colour of carpets made of polyamide fibre, with a decrease in consumption of dye, while maintaining clarity of contours, depth of dyeing, and colour stability to rubbing, improvement of printing technology due to elimination of acrylic thickeners while increasing durability of printing heads due to use of water-soluble thickening agent - carboxymethylcellulose.

1 tbl, 17 ex

Up!