Composition for thickening printing inks

 

(57) Abstract:

The invention relates to the textile industry and can be used in the processes of printing textile materials. The objective of the invention is to develop a composition for thickening printing inks, capable of improving the rheological and printing technical properties zagostox. This task is solved in that the composition for thickening printing inks containing maize starch, urea, castor oil and water, contains additional sodium tetraborate and dicyandiamide in the following ratio of components, g/kg): maize starch 63 - 67; urea 30 - 35; sodium tetraborate 0,5 - 1,0; dicyandiamide 4 - 6; castor oil 0,8 - 1,2; water to 1 kg 1 tab.

The invention relates to the textile industry and can be used for printing textile materials.

In terms of printing equipment printing inks, sagasti are exposed to various external physical influences (mainly shear strain), which cause the destruction of the internal structure of zagostox that adversely affects such qualitative indicators as contour drawings, the intensity of the colors and ustoicivai, g/kg): maize starch 100; chloramine 0,9; oleic acid 4; velocitee oil 2.

This sagasti characterized by insufficient stability of its structure to mechanical stress arising from the work of printing machines, resulting in deterioration of the rheological and printing technical properties zagostox.

Known closest to the proposed composition for thickening printing inks [2] , containing, g/kg): maize starch 45-55; urea 145-155; plasticizer (castor or alizarin oil) of 0.45 to 4.5.

Resistance patterns obtained sagasti to external mechanical stress is also insufficient, i.e. not achieve the required rheological and good printing technical properties zagostox on such parameters as the dynamic viscosity at high shear stresses, the intensity of the colors and their resistance to physical and chemical influences.

The objective of the invention is to develop a composition for thickening printing inks, capable of improving the rheological and printing technical properties zagostox.

The problem is solved in that the composition for thickening printing inks containing maize starch, urea, castorovom, g/kg:

Starch maize - 63-67

Urea - 30-35

Sodium tetraborate - 0,5-1,0

The dicyandiamide - 4-6

Castor oil - 0,8-1,2

Water - Up to 1 kg

The use of dicyandiamide (GOST 6988-73) is known in the processes of finishing fabrics thermosetting resins, and the use of sodium tetraborate (GOST 8429-69) is known in the processes of bleaching textile materials and antiseptic processing of fabrics.

We offer a thickening agent composition can be used for the preparation of printing inks on the basis of still active dyes and diazole.

Of rheological properties of thickening compositions (resistance structure zagostox to external mechanical impacts) to be judged by the change in their dynamic viscosity on the basis of experimental data obtained using the device - retest RV in a wide range of shear stresses.

About printing technical properties of thickening compositions were judged by the intensity of the received colors of fabrics and their resistance to physical and chemical influences. Sustainability colors to friction and washings was determined in accordance with GOST 9733.27-83 and GOST 9733.4-83. The intensity of the colors was evaluated by functions Kubelka-Munch Gurevich on Osnova thickening of the printing inks prepared following thickening composition, g/kg:

Starch maize - 65,00

Urea - 32.50 to

Castor oil - 1,00

Sodium tetraborate - 0,75

The dicyandiamide - 5,00

Water - Up to 1 kg

As a result, the viscosity of received sagasti is 179,1 Pas at shear stress of 100 PA it is reduced to 112 Pass, when the shear stress 220 PA is reduced accordingly to 16.4 Pass. The intensity of the colors when printing kubovy Golden yellow JHP using the received sagasti is 15.1. Sustainability colors to friction is 3 points, for washing - 5/5 points.

Example 2. To thicken printing inks prepared following thickening composition, g/kg:

Starch maize - 63

Urea - 30

Castor oil - 0,8

Sodium tetraborate - 0,5

The dicyandiamide - 4

Water - Up to 1 kg

As a result, the viscosity of received sagasti is of 177.8 Pas at shear stress of 100 PA it is reduced to 111,5 Pas at shear stress of 220 PA is reduced accordingly to 16.1 Pas. The intensity of the colors when printing kubovy Golden yellow JHP using the received sagasti is 15,0. Sustainability colors to friction is 3 points, for washing - 5/5 points.

Example 3. To thicken printing inks prepared claerbout sodium - 1,0

The dicyandiamide - 6

Water - Up to 1 kg

As a result, the viscosity of received sagasti is 180,2 Pas at shear stress of 100 PA it is reduced to 113,1 Pas at shear stress of 220 PA is reduced accordingly to 16.9 Pass. The intensity of the colors when printing kubovy Golden yellow JHP using the received sagasti is 15.5. Sustainability colors to friction is 3 points, for washing - 5/5 points.

These properties for compositions with different content components listed in the table.

The application of the proposed composition for thickening printing inks provides the following benefits:

improved rheological properties, i.e. increased resistance patterns will serostim to external mechanical stress, the viscosity of the proposed augustausko composition with increasing shear stress of 100 to 200 PA is reduced 1.6-11 times, while the viscosity of the thickening composition of the prototype with a similar change in the shear stress decreases in 9-200 time;

improved printing technical properties zagostox, such as enhancement of the intensity of the colors 1.4 times, while maintaining the sustainability of their physico-mechanical stress at the same level;

opportunities which P CLASS="ptx2">

Composition for thickening printing inks containing maize starch, urea, castor oil and water, characterized in that it further comprises dicyandiamide and sodium tetraborate in the following ratio of components, g/kg:

Starch maize 63 67

Urea 30 35

Sodium tetraborate 0,5 1,0

Dicyandiamide 4 6

Castor oil 0,8 1,2

Water Up to 1 KGO

 

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