RU2312943C1 - Formulation for finishing cellulose-containing textile materials - Google Patents

Abstract

FIELD: textile industry.

SUBSTANCE: formulation contains a preparation based on thermosetting resin pre-condensate, polyvinylacetate emulsion, and, as catalyst, dehydrated silica gel being waste from filtration stage of aluminum fluoride production, and water.

EFFECT: increased mashing resistance, reduced loss of strength, and improved environmental properties.

1 tbl, 11 ex

Description

The invention relates to the technology of textile materials, namely to the final finishing of cellulose-containing textile materials.

State of the art

To impart the properties of low crease and low shrinkability to cotton, linen and viscose staple fabrics, pre-condensates of thermosetting resins of three types are used: formaldehyde-containing derivatives with high (carbamol CEM, carbamol GL, methazine, carbamol b / m) and low (oteksid NF, oteksid Deksid , flir) the content of formaldehyde, as well as non-formaldehyde (BF Otexide). They are used in conjunction with catalysts that initiate the reaction of converting the precondensate into a thermosetting resin.

Metal catalysts, for example, magnesium chloride, zinc chloride, zinc nitrate, ammonium salts, in particular ammonium chloride or organic acids, such as acetic, oxalic, are used as catalysts for finishing textile materials with formaldehyde-containing preparations.

Tighter standards for the content of free formaldehyde on the fabric led to the creation of drugs that provide ever lower emissions of formaldehyde. 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 using non-formaldehyde or low formaldehyde pre-condensates of thermosetting resins, complex catalysts, including a neutral metal salt and organic acid in a strictly selected ratio, are most often introduced into the composition of finishing compositions.

Known compositions for the final finishing, containing a preparation based on precondensates of thermosetting resins, a polyvinyl acetate emulsion emollient, a catalyst, which are usually used metal salts in combination with organic acid and water (Finishing cotton fabrics: reference book / Edited by B.N. Melnikov. - Ivanovo: because of "Talka", 2003. - 484 p. ISBN 5-87596-051-5, p. 368).

A known composition for the final finishing of cotton fabrics, containing (g / l): carbamol CEM - 80; polyvinyl acetate emulsion - 5; softener - 20; ammonium persulfate - 3 (Finishing of cotton fabrics. In 2 hours. Part 1. Technology and assortment of cotton fabrics: Handbook / Under the editorship of B.N. Melnikov. - M.: Legprombytizdat, 1991. - 432 p. - ISBN 5- 7088-0476-9, p. 351).

A known composition for the final finish, containing (g / l): carbamol CEM - 120; polyvinyl acetate emulsion - 2; softener - 20; ammonium chloride - 4 (Finishing of cotton fabrics. In 2 hours, Part 1. Technology and assortment of cotton fabrics: Handbook / Under the editorship of B.N. Melnikov. - M .: Legprombytizdat, 1991. - 432 p. - ISBN 5- 7088-0476-9, p. 351).

Also known composition for the final finishing of linen fabrics, containing (g / l): carbamol CEM - 250; PEE - 30; polyvinyl acetate emulsion - 5; urea - 10; magnesium chloride (hexahydrate) - 20; acetic acid (ml / l) - 1-2 (Handbook of chemical technology for processing linen fabrics. M., "Light Industry", 1973, 408 s.6P9.22 s.157-158).

Also known is a composition containing (g / l): D-2 Otexide - 90; polyvinyl acetate emulsion - 10; urea - 10; softener - 10; magnesium chloride hexahydrate - 10 (Finishing of cotton fabrics: reference book / Under the editorship of B.N. Melnikov. - Ivanovo: from Talka, 2003. - 484 p., ISBN 5-87596-051-5, p.378 )

Known composition containing (g / l): Oteksid NF - 110; polyvinyl acetate emulsion - 6; softener - 10; PVA - 3; magnesium chloride hexahydrate - 10; acetic acid 30% - 3. (Finishing of cotton fabrics: reference book / Under the editorship of B.N. Melnikov. - Ivanovo: from Talka, 2003. - 484 p., ISBN 5-87596-051-5 , p. 370).

Closest to the invention in terms of essential features is a composition for the final finishing of cellulose-containing textile materials, containing (g / l): NF Oxide - 100-120; softener - 10-12; polyvinyl acetate emulsion 3-5; resin-forming catalyst - magnesium chloride - 9 (or ammonium chloride - 6) and acetic acid 30% - 3 (Finishing of cotton fabrics: reference book / Edited by B.N. Melnikov. - Ivanovo: Izd. Talka, 2003 .- 484 p. ISBN 5-87596-051-5, p. 369).

In this composition, NF Otexide is a low formaldehyde finishing agent, and magnesium chloride (or ammonium chloride) in combination with 30% acetic acid is a catalyst for the gum formation process.

However, the composition has the following disadvantages:

- low crease resistance of the treated tissue;

- loss of strength of the material treated with this composition is up to 40%, depending on the type of fabric;

- the mandatory presence in the composition of a softener, providing a soft neck of finished fabric;

- environmental hazard associated with the need to use ammonium chloride and organic acids to increase the activity of NF oxide;

- low stability of the composition during storage - not more than 6 hours, since when using magnesium chloride as a catalyst, the gumming process begins to take place already in the composition, which makes it impossible to use it for decoration.

SUMMARY OF THE INVENTION

The objective of the invention is to search for a composition for the final finishing of cellulose-containing textile materials, including a preparation based on a precondensate of thermosetting resins, a polyvinyl acetate emulsion, a catalyst and water, which would increase crease resistance, reduce the loss of strength of the textile material, reduce the environmental hazard of the process, increase the stability of the composition while maintaining a soft neck

The problem is solved by the composition for the final finishing of cellulose-containing textile materials containing a preparation based on a precondensate of thermosetting resins, a polyvinyl acetate emulsion, a catalyst and water, which contains dehydrated silica gel as a catalyst, which is a waste product from the production of aluminum fluoride from the filtration stage with the following components, g / l :

Finishing preparation 50-260 Polyvinyl acetate emulsion 3-10 Dehydrated silica gel, waste production aluminum fluoride from the filtration stage 3-20 Water up to 1 l

A distinctive feature of the invention is the use as a catalyst of dehydrated silica gel, which is a waste product of the production of aluminum fluoride from the filtration stage. It is this distinguishing feature, in combination with the known features, that provides the following, very significant advantages:

- increase of crease resistance, by 10-25%;

- reduction of textile material strength loss by 12-25%;

- preservation of softness when excluded from the composition of the softener;

- improvement of environmental friendliness due to exclusion from the composition of preparations of environmental hazard, namely magnesium chloride, ammonium chloride, acetic acid;

- improving the stability of the finishing composition during storage for at least 8 hours.

Information confirming the reproducibility of the invention

The composition contains the following components:

As a preparation based on the precondensate of thermosetting resins, a wide variety of formaldehyde-containing preparations can be used, for example, the following:

Carbamol GL TU 2484-051-05744685-2003 Carbamol CEM MRTU 6-14-124-69 Oteksid D-2 TU 6-36-129-0-92 Otexide NF TU 6-36-498-90 Fortex TK 45-99 Polyvinyl acetate emulsion GOST 10779-69 Dehydrated silica gel, waste production aluminum fluoride from the stage filtering GOST 19181-78 Technical water

The composition is prepared in a known manner traditionally used in the technology of finishing. For this purpose, a finishing preparation, a polyvinyl acetate emulsion and dehydrated silica gel are introduced into the water with stirring in the required quantities. The processing of textile materials is carried out according to traditional technology, the bath module 30-50.

The composition can be used to impart properties of low creasing and anti-shrinkage to cellulose-containing textile materials of various assortments, namely cotton, viscose staple, linen and fabrics made from a mixture of these fibers with synthetic ones.

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.

The crush resistance of the fabric was determined by the total recovery angle in degrees according to GOST 19204-73.

Strength characteristics of the material were determined on a tensile testing machine RT-250 according to GOST 20566-75, loss of strength was calculated in relation to the source fabrics.

The softness of the tissue was evaluated by the express method, determining the total (on the basis and the weft) angle of deviation from the horizontal of the fixed sample of 4 × 6 cm. The greater the angle of deviation corresponds to greater softness (Laboratory Workshop on Textile Materials Science / Ed. .: Legprombytizdat, 1986. - p. 261-264).

The stability of the composition was characterized by the storage time, beyond which the fabric treated with this composition has the worst quality indicators.

Tissue shrinkage after wet treatments was determined according to GOST 871084.

The whiteness and color change of textile materials was judged by the magnitude of the reflection coefficient, determined on a Spekol-11 spectrophotometer.

Qualitative indicators of the final finishing of the fabrics are shown in the table.

Table Quality Finishing Finishes prototype one 2 3 four 5 6 7 8 Material Composition cotton linen viscose cotton cotton cotton viscose viscose linen linen linen Composition, g / l Finishing preparation Otexide Otexide Otexide Otexide Fortex Carbamol Carbamol Carbamol Otexide Otexide Carbamol NF NF NF NF TsEM GL b / m D 2 D 2 GL 110 110 110 110 fifty 150 one hundred 200 one hundred 120 260 PVA four four four four 3 5 5 8 9 5 10 Catalyst Magnesium chloride Ammonium chloride Magnesium chloride Dehydrated silica gel Dehydrated silica gel Dehydrated silica gel Dehydrated silica gel Dehydrated silica gel Dehydrated silica gel Dehydrated silica gel Dehydrated silica gel 9 6 9 fifteen 3 10 10 10 10 fifteen twenty Acetic acid, 30% Acetic acid, 30% Acetic acid, 30% four four four Water up to 1 l up to 1 l up to 1 l up to 1 l up to 1 l up to 1 l up to 1 l up to 1 l up to 1 l up to 1 l up to 1 l Result: Indes, hail 173 122 183 208 195 198 200 215 168 145 148 Loss of durable.% 16.6 20.7 41.5 13.7 11.2 12.3 36.5 32,4 16,2 15.3 16,0 Softness, hail. 316 252 335 350 316 340 342 360 255 255 300 The stability of the island, an hour four four four 12 10 10 8 12 fifteen fifteen 12 Shrinkage: the basis 0 0 0 0 0 0 0 0 0 0 0 weft 0 0 0 0 0 0 0 0 0 0 0

Claims (1)

The composition for the final finishing of cellulose-containing textile materials containing a preparation based on a precondensate of thermosetting resins, a polyvinyl acetate emulsion, a catalyst and water, characterized in that it contains dehydrated silica gel as a catalyst, which is a waste product from the production of aluminum fluoride from the filtration stage, with the following components, g / l: Finishing preparation 50-260 Polyvinyl acetate emulsion 3-10 Dehydrated silica gel, waste production aluminum fluoride from the stage filtering 3-20 Water up to 1 l