RU2368712C1 - Low-formaldehyde composition for final conditioning cellulose-containing textile materials - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: low-formaldehyde composition for said conditioning contains, in g/l, 100-120 - otexide-"НФ" - methyl ether of dimethylolhydroxyethyleneurea, 1-3 aluminium chloride, 1.5-3 aluminium nitrate, 1-5 polymer-2,2-diamide-N,N,N-trimethyl-3-(1-oxo-2-propenyl)ammoniumaminopropaneammonium chloride and water to 1 l.

EFFECT: invention allows for reducing crease retention in materials, increasing shrink resistance, reducing weakening of material and cutting on power consumption through exclusion of thermal processing and lowering of drying temperature.

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Description

The invention relates to chemical technology of textile materials, in particular to low formaldehyde compositions for imparting, during final finishing, the properties of low crushability and shrinkage to cellulosic and cellulose-containing textile materials.

BACKGROUND

It is known that precondensates of thermosetting resins of three types are used to give cotton, linen and viscose staple fabrics the properties of low crease and non-shrink properties: formaldehyde-containing derivatives with high (CEM carbamol, GL carbamol, methazine, b / m carbamol), low D 2, fortex, flir, texoklen MFP) formaldehyde content, as well as formaldehyde-free (BF Otexide). They are used in conjunction with catalysts that initiate the reaction of the interaction of fiber cellulose with the precondensate of thermosetting resins and the conversion of the precondensate to a thermosetting resin.

Tighter standards for the content of free formaldehyde on tissues are aimed at creating drugs that reduce the release of formaldehyde into the environment.

It is known that low-formaldehyde preparations have significantly lower activity and therefore require longer heat-setting and more careful selection of catalysts than precondensates with a high formaldehyde content. When low-formaldehyde precondensates of thermosetting resins are used, complex catalysts, including a neutral metal salt and / or organic acid in a strictly selected ratio, are most often introduced into the composition of finishing compositions.

It is known that metal catalysts, for example magnesium chloride, zinc chloride, ammonium salts, in particular ammonium chloride and / or organic acids, such as acetic, are used as catalysts for finishing textile materials with less formaldehyde preparations.

A known composition for the final finishing of cotton fabrics, containing (g / l): flir 90-160; polyvinyl acetate emulsion 15; softener 15; magnesium chloride hexahydrate 12. (Finishing of cotton fabrics: Handbook / Under the editorship of B.N. Melnikov. - Ivanovo: publishing house "Talka", 2003. - 484 pp. ISBN 5-87596-051-5, p.378) .

Closest to the technical nature of the invention is a low formaldehyde composition to give cotton textile materials anti-shrink finish. (Finishing of cotton fabrics: Handbook / Edited by B.N. Melnikov. - Ivanovo: Publishing House "Talka", 2003. - 484 p. ISBN 5-87596-051-5, p.378).

It contains a precondensate of thermosetting resin, a resin formation catalyst, a softener, urea at a concentration of 2-5 g / l, a polyvinyl acetate emulsion at a concentration of 10-20 g / l.

As a precondensate of the thermosetting resin, it contains D-2 oxide, which is diethylene glycol ether of 4,5-dihydroxyethylene urea at a concentration of 70-160 g / l. As a gumming catalyst, it contains magnesium chloride hexahydrate at a concentration of 2.5-3 g / l or ammonium chloride 7-12 g / l. As a softener, it contains the softener MK-1 or octamon GP at a concentration of 10 g / l.

The processing of textile materials using the proposed composition is as follows: the textile material is impregnated with a composition at a temperature of 27 ± 5 ° C, squeeze up to 80% of the weight gain, dried to a residual moisture content of 35-60%, dried by convection in zones at a temperature of 100-145 ° C and for 2-5 minutes conduct heat treatment at a temperature of 150-170 ° C.

However, the composition has the following disadvantages:

- the composition allows you to get only anti-shrink finish, and with a high value of household shrinkage of 1.8-2.8%;

- high loss of strength of the material treated with this composition is at least 20-30% of the original tissue, depending on the type of fabric;

- high energy intensity due to the heat treatment operation;

Thus, the low formaldehyde composition for the final finishing of textile materials is not known, which would make it possible to give cellulose-containing fabrics a low crushing property and increase shrinkage, reduce the loss of strength of the textile material, and reduce energy consumption.

SUMMARY OF THE INVENTION

The objective of the invention is the search for a low formaldehyde composition for the final finishing of cellulose-containing textile materials, including a pre-condensate of a thermosetting resin, a gumming catalyst, including metal chloride and water, which would give the textile materials a low crush property, increase shrinkage, reduce fabric strength loss, and reduce energy consumption.

The problem is solved by a low formaldehyde composition for the final finishing of cellulose-containing textile materials, including a thermosetting resin pre-condensate, a gumming catalyst, including metal chloride, and water, which additionally contains polymer-2,2-diamide-N, N, N-trimethyl-3- (1 -oxo-2-propenyl) ammonium aminopropanammonium chloride and aluminum nitrate, as a precondensate of the thermosetting resin, contains NF oxide, which is dimethyldihydroxyethylene urea methyl ester, and as catal resinification mash contains aluminum chloride at the following component ratio, g / l:

OXIDE NF 100-120 aluminum chloride 1-3 aluminum nitrate 1,5-3 polymer-2,2-diamide-N, N, N-trimethyl-3- (1-oxo-2-propenyl) ammonium aminopropanammonium chloride 1-5 water up to 1 l

The invention allows to obtain the following advantages:

- to give textile materials the property of low crushing and increase shrinkage. So, household shrinkage is from 0.1 to 1.2%, and the total opening angle of the fold is from 210 to 239 °;

- reduce the loss of strength of the textile material by 10-20% compared with the prototype;

- reduce energy consumption by eliminating the heat treatment operation and lowering the drying temperature (last section 130 ° C).

INFORMATION CONFIRMING THE POSSIBILITY OF PLAYING THE INVENTION

The following substances are used to prepare the composition:

- NF Otexide, which is dimethylol dihydroxyethylene urea methyl ester (TU 6-36-498-0-90);

- aluminum chloride is used as a catalyst;

- aluminum nitrate;

- polymer-2,2-diamide-N, N, N-trimethyl-3- (1-oxo-2-propenyl) ammonium aminopropanammonium chloride (TU 2216-001-40910172-98).

- technical water.

The composition is prepared as follows.

Salts are dissolved in 1/4 of the required amount of water. Okside NF is dissolved in 1/4 of the required amount of water. Polymer-2,2-diamide-N, N, N-trimethyl-3- (1-oxo-2-propenyl) ammonium aminopropanammonium chloride is dissolved in 1/4 of the required amount of water. Then the solutions are combined, the remaining 1/4 of the water is introduced and mixed until a homogeneous composition is obtained.

Processing textile materials using the proposed composition is as follows. The cellulose-containing textile material is impregnated with the claimed composition at a temperature of 25-30 ° C, squeezed up to 80% of the weight gain, dried to a residual moisture content of 35-60%, dried in a convective dryer at a temperature of 80-130 ° C in zones for 2-3 minutes.

When processing the claimed composition, there is neither a change in the shade of the dyed fabric, nor yellowing of the bleached material.

Quality indicators of the final finish were determined identically for the prototype and for the proposed composition:

- crush resistance of the fabric was determined by the total angle of recovery of the fold after crushing in degrees in accordance with GOST 19204-73;

- the strength characteristics of the textile material was determined on a tensile testing machine RT-250 according to GOST 20566-75, and the loss of strength was judged by the reduction of the breaking load with respect to the starting fabrics.

The table shows the quality indicators of the final finishing of cellulose-containing textile materials at various concentrations of ingredients.

Claims (1)

A low formaldehyde composition for the final finishing of cellulose-containing textile materials, including a thermosetting resin pre-condensate, a gumming catalyst, including metal chloride, and water, characterized in that it additionally contains polymer-2,2-diamide-N, N, N-trimethyl-3- ( 1-oxo-2-propenyl) ammonium aminopropanammonium chloride and aluminum nitrate, as a precondensate of the thermosetting resin, contains NF oxide, which is dimethyldihydroxyethylene urea methyl ester, and resin as a catalyst rofessional comprises aluminum chloride at the following component ratio, g / l:
Oxide NF 100-120 aluminum chloride 1-3 aluminum nitrate 1,5-3 polymer-2,2-diamide-N, N, N-trimethyl-3- (1-oxo- 2-propenyl) ammonium aminopropanammonium chloride 1-5 water up to 1 l