SU767160A1 - Paint got deep of flexographic printing - Google Patents

Description

(54) PAINT FOR DEEP OR FLEXOGRAPHIC PRINTING

one

The invention relates to the printing industry, namely, paint for deep or. flexographic printing.

The known ink for intaglio or 5 flexographic printing, containing 15-20% by weight of a copolymer of methacrylic acid with butyl acrylate and methyl methacrylate, 10-25% by weight of a rosin-maleic resin modified with aeritrite, 6-30 parts by weight pigment, 2-5 wt.% antifoam agent and, the rest, water AND,

The disadvantage of this paint is the instability of the paint during storage 15 over 1 month. at deterioration of the optical strength properties of the impression (see table).

The purpose of the invention is to increase the stability of the ink during storage while maintaining the strength and optical properties of the print.

This goal is achieved due to the fact that the known paint additionally contains 3J5-di-tert, butyl-4 25 -oxytoluene, 2,6-2, 6-tetra-tert. bu-, tyl-4, 4-dioxydiphenylmethane or 3,3-di-tert. butyl-5, -dimethyl-2,2-dioxydiphenylmethane in the following ratio of components, wt.%: 30

Acrylic copolymer 15-45 Rosin-maleic resin, modified by pentaerythritol10-30

Pigment6-30

Antifoam2-10

3, 5 di-tert. butyl- ° -4-dxitoluene, 2, 6, 2, 6-tetra-tert. butyl 4,4-dioxydiphenylmethane or 3,3-di-tert. butyl 5, 5-dimethyl-2, 2-dioxydiphenylmethane, 5-5

Water, Rest

The paint may additionally contain polyethylene wax-O, 5-% Zw.% To impart abrasion resistance and sulphonated castor oil 1-8 wt.% - for a better spreading of paint.

Example 1. Paint of the following composition, wt.%:

Methacrylic copolymer

acids with butyl acrylate

and methyl methacrylate 15

Rosin maleinov

resin, modified

. pentaerythritol 10

Propyl alcohol

Phthalocyanine blue pigment

3,5-di-tert.butyl-4-oxytoluene

0.5

Water

Rest

Paints are prepared in a ball mill (an attritor or bead mill). In the presence of metallic pigments, paints are prepared with stirring using Q high-speed agitator for 10-20 minutes. 40% by weight of film-forming agent (acrylic copolymer and rosin-maleic modified with pentaerythritol), needle, defoamer, 3,5-di-tert-bu-15-yl-4-oxytoluene or 2, 6, 2, 6-tetratret. Butyl-4,4-dioxydiphenylmethane or 3,3-di-tert.butyl-5,5-dimethyl-2, 2-dioxydiphenylmethane and auxiliary additives. After rubbing pig-20

to a particle size of less than 10 microns, add the rest of the binder, ode and mix the paint for 0 minutes. After the end of the stirring, the mixture is filtered through a sieve -4800- 25 200 holes / cm. The pH of the paint is 7.6 and the viscosity is 35 s-VZ-4.

PRI mme R 2. Similarly to the example

1 Preparing the paint composition, wt.%: Q Methacrylic acid copolymer with butyl acrylate and methyl methacrylate 20 Rosino maleic resin, modified ac

pentaerythritol25

Pigment yellow transparent O8 Ethylene glycol 5 Polyethylene wax 2 2, 6-tetra-tert.bu-, 40 tyl-4,4-dioxydiphenylmethane 1. Water Rest

The pH of the paint is 7.8 and the viscosity is 50 s according to VZ-4.

For printing, the ink is diluted with water. 45

viscosity 20 s.

PRI me R 3. Similar to the example

1 Preparing paint composition, weight.%: Methacrylic acid copolymer with butyl acryl-50

volume and methyl methacrylate, 17 Rosin-maleic resin, modified with pentaerythritol13 with carbon black DGM-105 A 10 Triethylene glycol, 5 3,3-di-tert-butyl-5,5-dimethyl-2, 2-dioxydiphenylmethane2 Water Remaining 60 jpH paints 7, 8 and viscosity 60 s to

OT-4. The ink is thinned for printing.

water to a viscosity of 20 s.

PRI me R 4. Similar to the example

1 Prepare paint composition, wt.%: 65

Methacrylic acid copolymer with butyl acrylate and methyl methacrylate 35 Rosin-maleic resin modified with pentaerythritol

Crown lead-molybdate 30 Butyl alcohol 10

3,5-di-tert.butyl-4-oxytoluene3

WaterEverything

paint pH 7.8 and viscosity 60 s

H-4. For printing, the ink is diluted with a paint to a viscosity of 20 seconds. .

PRI me R 5. Similar to the example

Prepare paint composition, wt.%: Methacrylic acid copolymer with butyl acrylate and methyl methacrylate 27 Pentaerythritol-modified rosin-maleic resin

Titanium white25

Polyoxypropylene glycol (mv 500) 5 3, 3-di-tert.butyl-5,5-dimethyl-2, 2-dioxydiphenylmethane4

WaterEverything

paint pH 7.6 and viscosity 80 s

H-4. The ink is thinned for printing.

viscosity 20 s.

PRI me R 6. Similar to the example

Prepare paint composition, wt.%: Methacrylic acid copolymer with butyl acrylate and methyl methacrylate 15 Pentaerythritol modified rosin-maleic resin 10

Pigment pink hinakri-. Don 10

Glycerin4

2,6,26-tetra-tert.butyl-4, 4-dioxydiphenylmethane5

Water. The rest

The pH of the paint is 7.7 and the viscosity is 55 s.

H-4. for printing the ink is diluted

viscosity 20 s.

PRI me R 7. Similarly to the example.

Preparing paint composition, wt.%: Methacrylic acid copolymer with methyl methacrylate2-45 Pentaerythritol modified rosin-maleic resin30 Bright red 4J pigment 10 Butyl alcohol 10 3,5-di-tert-butyl-4-hydroxytoluene. 2 Water Residual pH paints 7.6 and viscosity 50 s

H-4. The ink is thinned for printing.

viscosity 20 s

Example Similar to the example

Prepare paint composition, wt.%:

Methacrylic acid copolymer with methyl methacrylate, 30

Rosin maleic resin modified with pentaerythritol27

Bronz Powder30

Ethylene glycol6

3,5-di-tert.butyl-4-oxytoluene3

Sulfonated castor oil .3

Water Rest

paint pH 7.5 and viscosity 40 s

E-4. The ink is thinned for printing.

viscosity 20 s.

Froze Similar to the example

Preparing paint composition, wt.%: Methacrylic acid copolymer with butyl acrylate and methyl methacrylate 15 Aluminum powder 25

Pentaerythritol Modified Maleic Resin20

Ethylene glycol5

2,6,2, b7tetra-tert. butyl-4,4-dioxy-diphenylmethane5

WaterExtra

The pH of the paint is 7.6 and the viscosity is 38 s according to VZ-4. For printing, the ink is diluted to a viscosity of 20 seconds.

EXAMPLE 10 Analogously to Example 1, a paint of a composition by weight% was prepared: Methacrylic copolymer

acids with butyl acrylate

and methyl methacrylate 20

Rosin maleinov

resin, modified

pentaerythritol25

Bronz Powder20

Diethylene glycol2

3,3-di-tert.butyl-5, -dimethyl-2,2-dioxydiphenylmethane1

5 WaterElite

The pH of the paint is 7.5 and the viscosity is 35 seconds. For printing, the ink is diluted with water to a viscosity of 20 seconds.

0 The table shows that the content of the paint is 3,5-di-tert.-butyl-4-oxytoluene or 2,6,2, b-tetra-tetra-butyl-4,4-dioxydiphenylmethane or 3, 3-di-ter . Butyl-5,5-dimethyl-2, 2-dioxidiphenylmethane provides

 paint stability during storage

maintaining the strength and optical properties of the impression.

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Claims (1)

Formula of the invention of Rosin-malein Paint for deep or flexographic pentaerythritol 10-30 acrylic printing. Pigment6-30 copolymer, rosin-maleic resin- Antifoam 2-10 pentaerythritol-modified lu, 3,5-di-tert.butyl-4pigment, defoamer and water, o t - oxytoluene, 2,6,2,6, with the aim of tetra-tert.butyl-4,4p ink stability at storage of diox yphenylmethane nenii while maintaining the strength and or 3,3-di-tert-butyloptics properties of the print, it additionally contains -5, -dimethyl-2,2-dioxyno contains 3,5-di-tert. butyl diphenylmethane 0.5-5 -4-oxytoluene, 2,6; 2, b-tetra-tert.bu- WaterOstal Tyl-4,4-dinosidiphenylmethane or 3 ,. Information sources, -d-tert.butyl-5,5-dimethyl-2,2-dioxy-taken into account in the examination of diphenylmethane with the following content 1. USSR Author's Certificate of components, wt.%: i5 according to application no. 2424882/05, cl .C 09 O 11/1 Acrylic copolymer 15--45 01.12.76. resin, modified