SU840083A1 - Paint for high offset printing - Google Patents

Description

The invention relates to the leather industry, and ink for high printing or offset printing. Known ink 1 dl or offset printing, containing weight .4. : Pigment Rosin-malinova or phenol-formaldehyde resin esterified with pen terythritrite or glycerol in vegetable oil and petroleum hydrocarbon solvents x- (varnish 6-02 6-03, 6-12J 6-24, 6-29) Phthalic anhydride polycondensate and pentaerythritol, modified with sunflower oil (alkyd resin D-4100) Lead-cobalt desiccant Calcium oxide The disadvantage of this color is low pigment dispersion and fixation speed of print, as well as non-indentation of print The aim of the invention is to increase pigment dispersion in pigment paint and its fixing on the print, akzhe increase the color intensity. The goal is achieved that the known paint additionally contains methyl or ethyl ester of p-naphthol, the next time the components are kept, parts by weight: Pigment 160-308 Rosin-malein or phenol-formaldehyde resin, ethentated by pentaerythritol or glycerol in vegetable oil and petroleum hydrocarbon solvents 532-793 Polycondensate of phthalic anhydride and pentaerythritol, / modified with sunflower oil Methyl or ethyl 10-100 ester of p-naphthol Lead-cobalt desiccant Example 1. Prepare a blue-colored composition, es.ch .:

Phthalocyanine blue pigment160

Alkyd Resin D-4100 34

Rosin metal

varnish 6-03490

Phenol-formaldehyde

varnish 6-12303

Naphtha ethyl ester

(nerolin) 10

Lead-cobalt.

desiccant3

A solution of ethyl α-naphthol in a mixture of alkyd resin with rosin-maleic varnish 6-03 and phenol-formaldehyde varnish 6-12 is then prepared in a mixer at T 100-120s, after which the pigment is added. The resulting mixture is frayed on a roll-inking machine.

Example 2. Preparing purpurea paint of the following composition, weight, hours: Ruby varnish pigment SC 168 Alkyd resin D-4100 90 Phenol-formaldehyde varnish 6-29632

Methyl ester Je-naphtol-100

Lead-cobalt siccative.10

Phenol-formaldehyde lacquer and p-naphthol bromide are loaded into a high-speed mixer, the ether is dissolved in lacquer at a temperature of up to 12O. The resulting solution is mixed with the pigment, the mixture is dispersed in a bead mill at a speed of up to 3000 rev / h, after which the paint is diluted with an alkyd resin and a desiccant.

Example 3. Preparing a yellow paint for the composition, parts by weight: Yellow light-resistant pigment 231LO Alkyd resin D-4100 7 Rosin-maleic varnish 6-02 763 Ethyl ester of fb-naphthol 30

Lead-Cobalt Desiccant20

The paint technology is similar to that described in Example 1,

Example 4. Preparing black paint composition, parts by weight: Anthracene soot DMG-105A, 230

Triphenylmethane blue dye78

Alkyd resin D-4100 100 Phenol-formaldehyde varnish 6-34532

Ethyl ether) b-naphthol 50 Lead-cobalt desiccant 10

Pre-preparing an aqueous emulsion of reference ether of i-naphthol in 350 parts by weight of water in a heated horizontal type mixer with an agitator with Z-shaped blades. Emulsification is carried out for 30 minutes at 80-95, then carbon black and a dye are added. With stirring, a homogeneous aqueous paste is obtained, after which an alkyd resin and varnish are added. The water was discarded for 30 minutes then the water was drained. The remaining moisture is removed by evaporation at 90-95 ° C. The resulting batch is diluted with a siccative and dispersed on a roll inking machine.

The results are shown in table.

Claims (1)

Analysis of the data in the table (comparison of the properties in accordance with the color of the ink) shows that the proposed inks containing the ethers of ji-naphthol are ground to a deeper degree of dispersion (810 µm Klin) at the same time of dispersion. At the same time, the intensity (optical density of ink on prints increases, marking out of paints on the reverse side of paper decreases, which characterizes an increased fixing speed on prints of paints. Invention paint for high or offset printing containing pigment, rosin-maleic or phenol-formaldehyde resin , etherified pentaerythritol or glycerol in vegetable oil and petroleum hydrocarbon solvents, phthalic anhydride and pentaerythritol polycondensate modified with sunflower oil scrapping and lead-cobalt desiccant, in order to increase the degree of dispersion of the pigment in the paint and the speed of its fixation on the print, as well as increase the intensity of its color, the paint additionally contains methyl or ethyl ether / 5-naphthol, with the following content of components, parts by weight: Pigment160-308 q.: to -foll-malein klk fekol-formaldehyde resin, esterificirovana with pentaerythritol or glycerin in vegetable oil and petroleum hydrocarbon solvents x5- 793 Phthalic anhydride and ne taeritrita modified sunflower oil. . 7-100 Methyl or ethyl ether |% 1-naphthol 10-100 Lead-cobalt desiccant 3-20 Sources of information that are taken into account during the examination 1. Author's certificate ..: USSR 12221, cl. C 09 D 11/10, 1974 ootype).